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Xerox DocuPrint N2025 Service Manual

Manual is about: Network Laser Printer

Summary of DocuPrint N2025

  • Page 1

    Xerox xerox docuprint n2025/n2825 network laser printer service manual 721p52440 february 2000 this service manual contains information that applies to the docuprint n2025/n2825 laser printer. Caution these components are susceptible to electrostatic discharge. Observe all esd procedures to avoid da...

  • Page 2

    Docuprint n2025/n2825 copyright 02/2000 ii initial issue copyright this service manual contains information that applies to the docuprint n2025/n2825 electronic laser printer. Notice this manual is for use by xerox technicians and xerox trained technicians only. Notice while every care has been take...

  • Page 3

    Electrostatic discharge docuprint n2025/n2825 02/2000 iii initial issue electrostatic discharge this caution indicates that there are components which are sensitive to damage caused by electrostatic discharge. Shock hazard this symbol indicates the presence of potentially hazardous voltages. Fuser h...

  • Page 4

    Docuprint n2025/n2825 table of contents 02/2000 iv initial issue table of contents title - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - page introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - iv organization - - - - - - - - - - - - - - - - - -...

  • Page 5

    Organization docuprint n2025/n2825 02/2000 v initial issue organization this manual is divided into seven sections. The title and description of each section of the manual is as follows: section 1 - service call procedures this section is used to identify a suspected problem. It contains machine ori...

  • Page 6

    Docuprint n2025/n2825 terminology and symbols 02/2000 vi initial issue terminology and symbols the following is the terminology and symbols that are used in this manual for warnings, electrostatic device or general cautions, and notes. Warning this equipment complies with the requirements in part 15...

  • Page 7

    Laser product certification docuprint n2025/n2825 02/2000 vii initial issue laser product certification caution use of controls or adjustments other than those specified in this manual may result in an exposure to dangerous laser radiation. The docuprint n2025/n2825 is certified to comply with laser...

  • Page 8

    Revision control list docuprint n2025/n2825 02/2000 viii page revision page revision page revision page revision page revision page revision initial issue product: docuprint n2025/n2825 laser printer title: xerox docuprint n2025/n2825 network laser printer service manual part number: 721p52440 title...

  • Page 9

    Revision control list docuprint n2025/n2825 02/2000 ix initial issue page revision page revision page revision page revision page revision page revision 5-1 - - - - -2/2000 5-2 - - - - -2/2000 5-3 - - - - -2/2000 5-4 - - - - -2/2000 5-5 - - - - -2/2000 5-6 - - - - -2/2000 5-7 - - - - -2/2000 5-8 - -...

  • Page 10

    Docuprint n2025/n2825 revision control list 02/2000 x page revision page revision page revision page revision page revision page revision initial issue.

  • Page 11

    02/2000 1-1 docuprint n2025/n2825 service call procedures initial issue 1 service call procedures 1.0 introduction ............................................................................................................... 1-3 1.1 machine orientation ................................................

  • Page 12

    02/2000 1-2 docuprint n2025/n2825 initial issue service call procedures.

  • Page 13

    02/2000 1-3 docuprint n2025/n2825 1.0, 1.1 service call procedures initial issue 1.0 introduction the service call procedures section is used to identify a suspected problem. This section con- tains call flow, initial actions, corrective actions, and final actions. Call flow illustrates the normal a...

  • Page 14

    02/2000 1-4 docuprint n2025/n2825 1.2 initial issue service call procedures 1.2 call flow the call flow diagram shows the relationship of actions during a typical service call figure 1. The functions in call flow correspond to service manual sections as follows: section 1 - initial actions, correcti...

  • Page 15

    02/2000 1-5 docuprint n2025/n2825 1.3, 1.4 service call procedures initial issue 1.3 initial actions initial actions are used to gather information from the operator concerning problems at the local machine. Make note of symptoms, error messages, error codes or other information con- cerning the pro...

  • Page 16

    02/2000 1-6 docuprint n2025/n2825 1.4 initial issue service call procedures y n perform rap 25/ rap 26. The controller software version switches off and the display shows “initializing . . .“ (figure 7). The display is correct. Y n perform rap 25/ rap 26. The display now shows “copyright xerox corp....

  • Page 17

    02/2000 1-7 docuprint n2025/n2825 1.4 service call procedures initial issue figure 3 figure 4 figure 5 figure 6 figure 7 figure 8 figure 9 figure 10 figure 11 figure 12.

  • Page 18

    02/2000 1-8 docuprint n2025/n2825 1.5 initial issue service call procedures 1.5 final actions procedure 1. Switch the main power off. 2. Update the tag matrix as required. 3. Reinstall all the covers removed during the service call and complete all required adminis- trative tasks. 4. Clean the cover...

  • Page 19

    02/2000 2-1 docuprint n2025/n2825 status indicator repair analysis procedures initial issue 2 status indicator repair analysis procedures introduction ..................................................................................................................... 2-3 measurements .................

  • Page 20

    02/2000 2-2 docuprint n2025/n2825 initial issue status indicator repair analysis procedures.

  • Page 21

    02/2000 2-3 docuprint n2025/n2825 introduction, measurements status indicator repair analysis procedures initial issue introduction the repair analysis procedures section is used to isolate and identify problems to a faulty component or subassembly. It contains the introduction, display message tabl...

  • Page 22

    02/2000 2-4 docuprint n2025/n2825 introduction, measurements initial issue status indicator repair analysis procedures.

  • Page 23

    02/2000 2-5 docuprint n2025/n2825 error code table status indicator repair analysis procedures initial issue error code table table 1 error code table comments on line message fault history entry diagnostic message error description action iot nvm fail power off/on u6 u6: nvm fail 1. A read error is...

  • Page 24

    02/2000 2-6 docuprint n2025/n2825 error code table initial issue status indicator repair analysis procedures close covers e5: top/r cover 1. Top cover interlock is open. 2. Rear cover interlock is open. Close top cover close rear cover go to rap 58 insert mbf e5: mbf extend mbf assy. Is not closed. ...

  • Page 25

    02/2000 2-7 docuprint n2025/n2825 error code table status indicator repair analysis procedures initial issue tray 2 misfeed with 500 sheet feeder installed as tray 2 tray 2 jam open tray 2 lift/extend mbf open top cover remove printcart clear paper path e2-12 e2-1 misfeed jam 1. Simplex printing: re...

  • Page 26

    02/2000 2-8 docuprint n2025/n2825 error code table initial issue status indicator repair analysis procedures duplex unit fail or removed e9-1 e9:duplex fail duplex module removed while power is on. Reinstall duplex module go to rap 60 offset bin fail power off/on e9-2 e-9:oct fail oct removed while ...

  • Page 27

    02/2000 2-9 docuprint n2025/n2825 error code table status indicator repair analysis procedures initial issue nv memory fail power off/on ess-n n/a controller nvm failure power off/on replace system controller pwb (rep 8.1) disk error format disk d-1 n/a hard drive error was detected. Power off/on fo...

  • Page 28

    02/2000 2-10 docuprint n2025/n2825 error code table initial issue status indicator repair analysis procedures 2020 - xie vdma 15 system controller xerox image enhanced vdma failure. Replace the system controller pwb (rep 8.1). 3000 - token ring 3000 - serial 3000 - e-net (10 base 2) 16 replace the a...

  • Page 29

    02/2000 2-11 docuprint n2025/n2825 rap 1 status indicator repair analysis procedures initial issue rap 1 ac power initial actions disconnect the ac power cord from the wall outlet. Warning improper connection of the grounding conductor can result in the risk of electrical shock. The following must b...

  • Page 30

    02/2000 2-12 docuprint n2025/n2825 rap 2 initial issue status indicator repair analysis procedures rap 2 dc power this procedure is used to troubleshoot the low voltage power supply. Procedure perform rap 1 before starting this rap. If rap 1 checks out ok, switch the main power off and disconnect th...

  • Page 31

    02/2000 2-13 docuprint n2025/n2825 rap 3 status indicator repair analysis procedures initial issue rap 3 dc power loading initial actions perform rap 2 dc power before starting this rap. Warning ac input voltages can be lethal. Use extreme care while checking the voltages on the lvps. Disconnect the...

  • Page 32

    02/2000 2-14 docuprint n2025/n2825 rap 4 initial issue status indicator repair analysis procedures rap 4 c3: tray error / insert tray 1,2,3 tray assembly (tray 1, tray 2, or tray 3) are not in place. Procedure enter diagnostics and select test print. Run a test print from every tray (see section 6)....

  • Page 33

    02/2000 2-15 docuprint n2025/n2825 rap 5 status indicator repair analysis procedures initial issue rap 5 c5: add paper to mbf, tray 1, 2 or 3) procedure the problem appears when using tray 2 or 3. Y n check the paper level in tray 1. There is at least 100 sheets of paper in tray 1. Y n load paper in...

  • Page 34

    02/2000 2-16 docuprint n2025/n2825 rap 6, rap 7 initial issue status indicator repair analysis procedures rap 6 c5: top tray full error code indicates the top tray is full. Procedure there is a paper stack on the top cover close to the stack full actuator. Y n the paper is curled. Y n open the rear ...

  • Page 35

    02/2000 2-17 docuprint n2025/n2825 rap 8 status indicator repair analysis procedures initial issue rap 8 e2-1: paper jam / misfeed there is a paper jam between the tray 1, 2, 3 or mbf and the registration sensor. Procedure enter diagnostics and select test print. Run 10 prints from every paper tray....

  • Page 36

    02/2000 2-18 docuprint n2025/n2825 rap 9, rap 10 initial issue status indicator repair analysis procedures rap 9 e2-2: paper jam/ misfeed duplex there is a paper jam between the paper handler assembly and the registration sensor when the paper is refed to print a 2nd page. Procedure the paper is cur...

  • Page 37

    02/2000 2-19 docuprint n2025/n2825 rap 10, rap 11 status indicator repair analysis procedures initial issue run a test print. Inspect paper path between paper transport assembly and the pinch roll of the fuser assembly. The paper passes through the exit roll assem- bly and the pinch roll of the fuse...

  • Page 38

    02/2000 2-20 docuprint n2025/n2825 rap 11, rap 12 initial issue status indicator repair analysis procedures open the rear cover and cheat the rear cover interlock switch. Scroll to exit motor fwd l then press enter [4]. After a few seconds press offline [0]. Scroll to exit motor rev and press enter ...

  • Page 39

    02/2000 2-21 docuprint n2025/n2825 rap 13, rap 14 status indicator repair analysis procedures initial issue rap 13 j3: print cartridge not in position - install/reset print cartridge the print cartridge is not in place or is installed incorrectly. Procedure open the top cover and remove the print ca...

  • Page 40

    02/2000 2-22 docuprint n2025/n2825 rap 15, rap 16 initial issue status indicator repair analysis procedures rap 15 p1: fuser pause receiving pause command from the controller. Procedure switch off the printer power. Remove the fuser assembly. Measure the resistance between pins a1 & a2 of p174 on th...

  • Page 41

    02/2000 2-23 docuprint n2025/n2825 rap 17, rap 18 status indicator repair analysis procedures initial issue rap 17 u2: ros fail / power off then on there is a problem with the laser assembly. Procedure enter diagnostics and select nvm config (password 0734). Check the value for resolution and for la...

  • Page 42

    02/2000 2-24 docuprint n2025/n2825 rap 19, rap 20 initial issue status indicator repair analysis procedures rap 19 u6: nvm fail / power off then on there is problem with non-volatile ram on the printer engine controller pwb. Procedure switch the main power off then on. The u6 error code appears. Y n...

  • Page 43

    02/2000 2-25 docuprint n2025/n2825 rap 21, rap 22 status indicator repair analysis procedures initial issue rap 21 low paper tray 1/2/3 paper stack in the paper tray assembly is below 50 sheets. Procedure insert a full tray assembly in the affected position. The error message reappears. Y n problem ...

  • Page 44

    02/2000 2-26 docuprint n2025/n2825 rap 22, rap 23 initial issue status indicator repair analysis procedures replace the print engine controller pwb (rep 8.5). Rap 23 j5 toner low j5 is not displayed when the print cartridge appears to be empty. Procedure run a test print. Inspect the print quality. ...

  • Page 45

    02/2000 2-27 docuprint n2025/n2825 rap 24 status indicator repair analysis procedures initial issue rap 24 inoperative printer the main power cannot be switched on. Procedure ensure the power cord is properly connected to the wall outlet and to the back of the printer. The problem still exists. Y n ...

  • Page 46

    02/2000 2-28 docuprint n2025/n2825 rap 25 initial issue status indicator repair analysis procedures rap 25 malfunctioning lcd/led there is an erratic display on lcd/led. Procedure switch the printer power off. Remove any options connected to the system controller pwb. Disconnect p/j18 from the syste...

  • Page 47

    02/2000 2-29 docuprint n2025/n2825 rap 26, rap 27 status indicator repair analysis procedures initial issue rap 26 inoperative keypad control panel is not operative. Procedure enter diagnostics and select the component test. Scroll to sensor input test and press enter [4]. The printer enters the dia...

  • Page 48

    02/2000 2-30 docuprint n2025/n2825 rap 28 initial issue status indicator repair analysis procedures rap 28 power supply procedure switch the printer power off. Disconnect the power cord. Remove the lower rear cover (rep 1.7). Disconnect the following from the lvps: • p/j161 (print engine controller ...

  • Page 49

    02/2000 2-31 docuprint n2025/n2825 rap 29 status indicator repair analysis procedures initial issue rap 29 main motor assembly procedure open the top cover and remove the print cartridge. Cheat the top cover interlock. Enter diagnostics and select the component test. Scroll to main motor and press e...

  • Page 50

    02/2000 2-32 docuprint n2025/n2825 rap 30 initial issue status indicator repair analysis procedures rap 30 laser assembly procedure enter diagnostics and select component test. Scroll to ros motor and press enter. You can hear the ros motor spin up. Y n switch the printer power off. Remove the left ...

  • Page 51

    02/2000 2-33 docuprint n2025/n2825 rap 31 status indicator repair analysis procedures initial issue rap 31 fuser assembly procedure warning if the printer has been switched on, the fuser may be hot. Switch the printer power off. Remove the fuser assembly (rep 5.1). Measure the resistance between pin...

  • Page 52

    02/2000 2-34 docuprint n2025/n2825 rap 32, rap 33 initial issue status indicator repair analysis procedures rap 32 registration sensor procedure open the top cover and extend the mbf and remove the print cartridge. Enter diagnostics and select component test. Scroll to sensor input test and press en...

  • Page 53

    02/2000 2-35 docuprint n2025/n2825 rap 33, rap 34 status indicator repair analysis procedures initial issue replace the print engine controller pwb (rep 8.5). It appears that the mbf no paper sensor is working correctly. If a problem persists, replace the print engine controller pwb (rep 8.5). Rap 3...

  • Page 54

    02/2000 2-36 docuprint n2025/n2825 rap 34, rap 35 initial issue status indicator repair analysis procedures replace the print engine controller pwb (rep 8.5). It appears that the tray 1 no paper sensor is working correctly. If a problem persists, replace the print engine controller pwb (rep 8.5). Ra...

  • Page 55

    02/2000 2-37 docuprint n2025/n2825 rap 35, rap 36 status indicator repair analysis procedures initial issue there is continuity between each of the pins. Y n repair or replace the harness, as necessary (pl 9.1). Replace the duplex interface pwb (rep 8.3). Switch the printer power off. Disconnect p/j...

  • Page 56

    02/2000 2-38 docuprint n2025/n2825 rap 37 initial issue status indicator repair analysis procedures rap 37 size switch procedure the problem is with a 2000 sheet feeder y n remove the tray from the problem feeder. Inspect the size cams on the left side of the paper tray. The size cams are intact and...

  • Page 57

    02/2000 2-39 docuprint n2025/n2825 rap 38 status indicator repair analysis procedures initial issue rap 38 registration clutch procedure enter diagnostics and select component test. Scroll to reg. Clutch and press enter. You can hear the registration clutch energize. Y n switch the printer power off...

  • Page 58

    02/2000 2-40 docuprint n2025/n2825 rap 39 initial issue status indicator repair analysis procedures rap 39 turn roll clutch assembly procedure enter diagnostics and select component test. Scroll to turn roll clutch assembly and press enter. You can hear the turn roll clutch assembly energize. Y n sw...

  • Page 59

    02/2000 2-41 docuprint n2025/n2825 rap 40, rap 41 status indicator repair analysis procedures initial issue rap 40 tray 1 feed solenoid procedure enter diagnostics and select component test. Scroll to tray 1 feed sol and press enter. You can hear the solenoid energize. Y n switch the printer power o...

  • Page 60

    02/2000 2-42 docuprint n2025/n2825 rap 42, rap 43 initial issue status indicator repair analysis procedures rap 42 toner sensor assembly procedure switch the printer power off. Remove the left side cover (rep 1.1) and the print engine con- troller pwb cover (rep 8.5). Open the top cover and remove t...

  • Page 61

    02/2000 2-43 docuprint n2025/n2825 rap 43, rap 44 status indicator repair analysis procedures initial issue check the wiring connections and continuity between the charge contact on the right side guide and p186 on the hvps. Repair or replace as necessary. If wiring is ok, replace the hvps (rep 8.2)...

  • Page 62

    02/2000 2-44 docuprint n2025/n2825 rap 44, rap 45 initial issue status indicator repair analysis procedures disconnect the hvps (p/j18) from the print engine controller pwb (rep 8.5). Run test prints (continuously; approximately twenty sheets). The test prints run normally. Y n replace the print eng...

  • Page 63

    02/2000 2-45 docuprint n2025/n2825 rap 46, rap 47 status indicator repair analysis procedures initial issue rap 46 0102 - dimm 2 procedure switch off the printer power. Remove the left side cover (rep 1.1) and the shield cover. Remove the dimm installed in slot 2 (j5). Switch the printer power on. "...

  • Page 64

    02/2000 2-46 docuprint n2025/n2825 rap 46, rap 47 initial issue status indicator repair analysis procedures.

  • Page 65

    02/2000 2-47 docuprint n2025/n2825 rap 48, rap 49 status indicator repair analysis procedures initial issue rap 48 exit sensor procedure enter diagnostics and select component test. Scroll to sensor input test and press enter [4]. Open the rear cover and open the fuser exit door. Actuate and deactua...

  • Page 66

    02/2000 2-48 docuprint n2025/n2825 rap 49, rap 50 initial issue status indicator repair analysis procedures y n replace the retard chute assembly (rep 11.13). Remove the rear chute assembly (rep 11.13). Inspect the rear chute assembly for damaged missing or broken idler rollers and springs. Replace ...

  • Page 67

    02/2000 2-49 docuprint n2025/n2825 rap 51 status indicator repair analysis procedures initial issue rap 51 500 sheet feeder feed solenoid the 500 sheet feeder is not feeding paper or not feeding paper at the correct time. Procedure enter diagnostics and select component test. Scroll to tray 2 feed s...

  • Page 68

    02/2000 2-50 docuprint n2025/n2825 rap 52 initial issue status indicator repair analysis procedures rap 52 500 sheet feeder assembly not recognized controller does not recognize the feeder assembly. Procedure check the alignment of the printer to the 500 sheet feeder and the alignment of the top 500...

  • Page 69

    02/2000 2-51 docuprint n2025/n2825 rap 52, rap 53 status indicator repair analysis procedures initial issue • p13-12 and p132-11 • p13-13 and p132-12 • p13-14 and p132-13 • p13-15 and p132-14 there is continuity between all pins measured. Y n repair or replace the harness between p/j13 and p/j131 (p...

  • Page 70

    02/2000 2-52 docuprint n2025/n2825 rap 54, rap 55 initial issue status indicator repair analysis procedures rap 54 c3: tray out / install tray 2 (or tray 3) tray 2, tray 3. Procedure remove and reinstall the paper tray. Enter diagnostics and select test print. Run test print from problem tray. The c...

  • Page 71

    02/2000 2-53 docuprint n2025/n2825 rap 56 status indicator repair analysis procedures initial issue rap 56 c5: add paper to tray 2 (or tray 3) tray 2 or tray 3 are out of paper. Procedure check the paper level in the indicated tray assembly. There is paper in the indicated tray. Y n load paper into ...

  • Page 72

    02/2000 2-54 docuprint n2025/n2825 rap 56 initial issue status indicator repair analysis procedures.

  • Page 73

    02/2000 2-55 docuprint n2025/n2825 rap 57 status indicator repair analysis procedures initial issue rap 57 e7: duplex jam there is a paper jam between the exit assembly and the duplex sensor. Procedure open the printer and check for paper or other obstructions in the paper path. The printer if free ...

  • Page 74

    02/2000 2-56 docuprint n2025/n2825 rap 58, rap 59 initial issue status indicator repair analysis procedures rap 58 e5: top/r cover the top cover or rear cover is open. Procedure open and close the rear cover and the top cover. The error message is still displayed. Y n problem solved. Open the rear c...

  • Page 75

    02/2000 2-57 docuprint n2025/n2825 rap 59, rap 60 status indicator repair analysis procedures initial issue • j501-1 and j19-13 • j501-2 and j19-12 • j501-3 and j19-11 there is continuity between each of the pins. Y n repair or replace the duplex interface harness, as necessary (pl 9.1). Replace the...

  • Page 76

    02/2000 2-58 docuprint n2025/n2825 rap 59, rap 60 initial issue status indicator repair analysis procedures.

  • Page 77

    02/2000 2-59 docuprint n2025/n2825 rap 61, rap 62 status indicator repair analysis procedures initial issue rap 61 c5: wrong size for duplex the size of paper the printer senses in the tray and/or mbf is not supported by the duplex assembly. Procedure the problem appears when using tray 1, 2, or 3. ...

  • Page 78

    02/2000 2-60 docuprint n2025/n2825 rap 63, rap 64 initial issue status indicator repair analysis procedures rap 63 c3: 2000 sheet feeder carriage not in position the 2000 sheet feeder tray assembly has not been set. Procedure open and close the 2000 sheet feeder tray assembly. The c3 error code is s...

  • Page 79

    02/2000 2-61 docuprint n2025/n2825 rap 65, rap 66 status indicator repair analysis procedures initial issue rap 65 e5: 2000 sheet feeder cvr open / please close cvr the 2000 sheet feeder rear cover assembly is open. Procedure manually open/close the 2000 sheet feeder upper rear cover assembly. Make ...

  • Page 80

    02/2000 2-62 docuprint n2025/n2825 rap 67 initial issue status indicator repair analysis procedures rap 67 c5: oct tray full error code indicates that the oct output tray is full. Procedure enter diagnostics and select component test. Scroll to sensor input test and press enter. Actuate and deactuat...

  • Page 81

    02/2000 2-63 docuprint n2025/n2825 rap 68 status indicator repair analysis procedures initial issue rap 68 e8: oct jam there is a paper jam at the oct sensor. Procedure the front edge of the paper is located within the exit assembly. Y n remove and reinstall the oct assembly (rep 10.1). Run a test p...

  • Page 82

    02/2000 2-64 docuprint n2025/n2825 rap 69, rap 70 initial issue status indicator repair analysis procedures rap 69 e5: oct cvr open / please close cvr the rear cover assembly is open. Procedure open and close the oct rear cover. The error code reappears. Y n problem solved. Open the oct rear cover a...

  • Page 83

    02/2000 2-65 docuprint n2025/n2825 rap 71, rap 72 status indicator repair analysis procedures initial issue rap 71 e9: oct fail procedure switch the printer power off. Remove the left side cover (rep 1.1) and the print engine con- troller pwb cover (rep 8.5). Disconnect p/j19 from the print engine c...

  • Page 84

    02/2000 2-66 docuprint n2025/n2825 rap 73 initial issue status indicator repair analysis procedures rap 73 oct sensor procedure enter diagnostics and select component test. Scroll to sensor input test and press enter. Actuate and deactuate the oct sensor the number on the lcd increments each time yo...

  • Page 85

    02/2000 3-1 docuprint n2025/n2825 image quality repair analysis procedures initial issue 3 image quality repair analysis procedures introduction ..................................................................................................................... 3-3 image quality defect definitions ...

  • Page 86

    02/2000 3-2 docuprint n2025/n2825 initial issue image quality repair analysis procedures.

  • Page 87

    02/2000 3-3 docuprint n2025/n2825 introduction, image quality defect definitions image quality repair analysis procedures initial issue introduction this section contains image quality repair procedures to assist in correcting image quality defects. These procedures provide defect samples, definitio...

  • Page 88

    02/2000 3-4 docuprint n2025/n2825 image quality checkout initial issue image quality repair analysis procedures image quality checkout the system controller test print is used to evaluate and ensure that the printed image meets the printer specifications. Use new paper, whenever possible, to check t...

  • Page 89

    02/2000 3-5 docuprint n2025/n2825 solid area density, background image quality repair analysis procedures initial issue solid area density procedure ensure the printer is set for 600 dpi. Compare the solid areas on the system controller test patterns with the output reference document (82p520) (figu...

  • Page 90

    02/2000 3-6 docuprint n2025/n2825 deletions, fusing initial issue image quality repair analysis procedures deletions (line, band, spots) procedure inspect test prints for the presence of deletions (missing image). There should be no deletions with a diameter larger than 0.5 mm visible on test prints...

  • Page 91

    02/2000 3-7 docuprint n2025/n2825 resolution, registration image quality repair analysis procedures initial issue resolution procedure refer to figure 1. Observe the three image areas on several system controller test patterns. Check the resolution of the images in each of the areas: arrow 1 the two...

  • Page 92

    02/2000 3-8 docuprint n2025/n2825 registration, skew initial issue image quality repair analysis procedures registration (lead edge to trail edge) procedure measure the registration on two consecutive system controller test patterns. Fold the paper in half (lead edge to trail edge). Observe the fold...

  • Page 93

    02/2000 3-9 docuprint n2025/n2825 skips / smears, spots image quality repair analysis procedures initial issue skips / smears procedure enter diagnostics and select test print. Scroll to print pattern and press enter [4]. Inspect the ladder chart test pattern. The pattern should be free from skips a...

  • Page 94

    02/2000 3-10 docuprint n2025/n2825 other print defects, iq rap 1 initial issue image quality repair analysis procedures other print defects procedure inspect the test patterns for other print defects. Test prints are free of defects. Y n there are dark streaks present on the test prints. Y n there i...

  • Page 95

    02/2000 3-11 docuprint n2025/n2825 iq rap 1, iq rap 2 image quality repair analysis procedures initial issue the btr is intact and is free of contamination. Y n replace the btr (rep 7.7). Generate a test print and switch off the printer power halfway through the print cycle. Carefully remove the pri...

  • Page 96

    02/2000 3-12 docuprint n2025/n2825 iq rap 2, iq rap 3 initial issue image quality repair analysis procedures check for continuity between the metal grounding contact and the printer frame. There is continuity between the grounding contact and the printer frame. Y n replace the right print cartridge ...

  • Page 97

    02/2000 3-13 docuprint n2025/n2825 iq rap 3, iq rap 4 image quality repair analysis procedures initial issue warning if the printer has been switched on, the fuser will be hot. Open the exit assembly. Remove the fuser assembly. Turn the fuser assembly upside down. Rotate the fuser idler gear manuall...

  • Page 98

    02/2000 3-14 docuprint n2025/n2825 iq rap 4, iq rap 5 initial issue image quality repair analysis procedures inspect the btr assembly for contamination and wear. The btr is free of contamination and wear. Y n replace the btr assembly (rep 7.7). Generate a test print and switch off the printer power ...

  • Page 99

    02/2000 3-15 docuprint n2025/n2825 iq rap 5, iq rap 6 image quality repair analysis procedures initial issue inspect the btr assembly for contamination and wear. The btr is free of contamination and wear. Y n replace the btr assembly (rep 7.7). Warning if the printer has been switched on, the fuser ...

  • Page 100

    02/2000 3-16 docuprint n2025/n2825 iq rap 6, iq rap 7 initial issue image quality repair analysis procedures y n replace the fuser assembly (rep 5.1). Replace the following, in order, until the defective component is found: btr assembly (rep 7.7), paper transport assembly (rep 4.1). Iq rap 7 vertica...

  • Page 101

    02/2000 3-17 docuprint n2025/n2825 iq rap 7, iq rap 8 image quality repair analysis procedures initial issue y n remove any obstructions from the laser beam path. Inspect the btr assembly for contamination and wear. The btr is free of contamina- tion and wear. Y n replace the btr assembly (rep 7.7)....

  • Page 102

    02/2000 3-18 docuprint n2025/n2825 iq rap 8, iq rap 9 initial issue image quality repair analysis procedures check for the continuity between the metal grounding contact and the printer body frame. There is continuity between the grounding contact and the printer frame. Y n replace the right print c...

  • Page 103

    02/2000 3-19 docuprint n2025/n2825 iq rap 9, iq rap 10 image quality repair analysis procedures initial issue warning if the printer has been switched on, the fuser will be hot. Open the exit assembly. Remove the fuser assembly. Turn the fuser assembly upside down. Rotate the fuser idler gear manual...

  • Page 104

    02/2000 3-20 docuprint n2025/n2825 iq rap 11 initial issue image quality repair analysis procedures iq rap 11 background there is toner contamination on all or part of the page. The contamination appears as a very light gray dusting (figure 1). Figure 1 background initial actions • inspect the print...

  • Page 105

    02/2000 3-21 docuprint n2025/n2825 iq rap 12 image quality repair analysis procedures initial issue iq rap 12 uneven density image density varies within the page in either direction (figure 1). Figure 1 uneven density initial actions • load fresh dry paper. • check that the correct print cartridge i...

  • Page 106

    02/2000 3-22 docuprint n2025/n2825 iq rap 13 initial issue image quality repair analysis procedures iq rap 13 skewed image the image is not parallel to the edges of the print sheet (figure 1). Figure 1 skewed image initial actions • check the paper tray(s) installation and the paper in the tray(s). ...

  • Page 107

    02/2000 3-23 docuprint n2025/n2825 iq rap 13, iq rap 14 image quality repair analysis procedures initial issue • check the rear chute between the duplex assembly and the registration rolls. Check for worn parts or rolls. Check for obstructions or contamination. Clean or replace as neces- sary. Iq ra...

  • Page 108

    02/2000 3-24 docuprint n2025/n2825 iq rap 14, iq rap 15 initial issue image quality repair analysis procedures y n replace the damaged or worn roll (rep 3.1). Install a new print cartridge. Run a test print. The print is still damaged. Y n problem solved. Replace the following, in order, until the d...

  • Page 109

    02/2000 3-25 docuprint n2025/n2825 iq rap 16, iq rap 17 image quality repair analysis procedures initial issue iq rap 16 skips / smears a disturbance of the image which lengthens or shortens the image in the process direction. A darkening across the process direction or a repeat of the image in the ...

  • Page 110

    02/2000 3-26 docuprint n2025/n2825 iq rap 17, iq rap 18 initial issue image quality repair analysis procedures y n clean or replace the fuser assembly (rep 5.1). Open the fuser jam access cover. Rotate the fuser idler gear manually and inspect the contact between the heat roll and the pressure roll ...

  • Page 111

    02/2000 4-1 docuprint n2025/n2825 repair-adjustment initial issue 4 repair-adjustment introduction ..................................................................................................................... 4-3 covers rep 1.1 left side cover ...................................................

  • Page 112

    02/2000 4-2 docuprint n2025/n2825 initial issue repair-adjustment rep 10.15 paper sensor................................................................................................ 4-62 500 sheet feeder rep 11.1 printer removal .......................................................................

  • Page 113

    02/2000 4-3 docuprint n2025/n2825 introduction repair-adjustment initial issue introduction overview the repair / adjustment section, section 4 of the service manual, provides information that enables the service representative to restore the product to within specification after fault iso- lation. ...

  • Page 114

    02/2000 4-4 docuprint n2025/n2825 introduction initial issue repair-adjustment.

  • Page 115

    02/2000 4-5 docuprint n2025/n2825 rep 1.1, rep 1.2 repair-adjustment initial issue rep 1.1 left side cover parts list on pl 1.1 removal warning switch off the power and disconnect the power cord. 1. Slide the left cover toward the rear of the printer (figure 1). 2. Remove the left side cover. Figure...

  • Page 116

    02/2000 4-6 docuprint n2025/n2825 rep 1.3 initial issue repair-adjustment rep 1.3 top cover assembly parts list on pl 1.1 removal warning switch off the power and disconnect the power cord. 1. Open the rear cover. 2. Remove the oct, if installed (rep 10.1). 3. Open the top cover and remove the print...

  • Page 117

    02/2000 4-7 docuprint n2025/n2825 rep 1.4, rep 1.5 repair-adjustment initial issue rep 1.4 front cover parts list on pl 1.1 removal warning switch off the power and disconnect the power cord. 1. Open the rear cover. 2. Remove the oct, if installed (rep 10.1). 3. Open the top cover and remove the pri...

  • Page 118

    02/2000 4-8 docuprint n2025/n2825 rep 1.6, rep 1.7 initial issue repair-adjustment rep 1.6 hvps cover parts list on pl 7.1 removal warning switch off the power and disconnect the power cord. 1. Remove the rear cover (rep 1.9). 2. Remove the duplex assembly, if installed (rep 9.1). 3. Remove the scre...

  • Page 119

    02/2000 4-9 docuprint n2025/n2825 rep 1.8, rep 1.9 repair-adjustment initial issue rep 1.8 mbf gear cover parts list on pl 4.2 removal warning switch off the power and disconnect the power cord. 1. Remove the mbf assembly (rep 2.1). 2. Remove the screw that secures the left mbf gear cover to the lef...

  • Page 120

    02/2000 4-10 docuprint n2025/n2825 rep 1.8, rep 1.9 initial issue repair-adjustment.

  • Page 121

    02/2000 4-11 docuprint n2025/n2825 rep 2.1 repair-adjustment initial issue rep 2.1 mbf assembly parts list on pl 4.2 removal warning switch off the power and disconnect the power cord. 1. Remove tray 1. 2. Open and extend the mbf assembly to the paper load position (figure 1). 3. Remove the screw th...

  • Page 122

    02/2000 4-12 docuprint n2025/n2825 rep 2.2, rep 2.3 initial issue repair-adjustment rep 2.2 mbf feed roll parts list on pl 4.1 removal warning switch off the power and disconnect the power cord.Power cord. 1. Remove the mbf assembly (rep 2.1). 2. For the left feed roll, lift the locking tab on the l...

  • Page 123

    02/2000 4-13 docuprint n2025/n2825 rep 2.4, rep 2.5 repair-adjustment initial issue rep 2.4 tray 1 turn roll assembly parts list on pl 3.1 removal warning switch off the power and disconnect the power cord. 1. Remove the mbf assembly (rep 2.1). 2. Remove the mbf gear cover (rep 1.8). 3. Remove the t...

  • Page 124

    02/2000 4-14 docuprint n2025/n2825 rep 2.5, rep 2.6 initial issue repair-adjustment figure 2 mbf tray assembly figure 3 mbf retard holder assembly replacement 1. Reinstall the components in the reverse order. Rep 2.6 tray 1 no paper sensor assembly parts list on pl 4.2 removal warning switch off the...

  • Page 125

    02/2000 4-15 docuprint n2025/n2825 rep 2.7 repair-adjustment initial issue rep 2.7 mbf no paper sensor assembly parts list on pl 4.2 removal warning switch off the power and disconnect the power cord. 1. Remove the mbf assembly (rep 2.1). 2. Remove the mbf gear cover (rep 1.8). 3. Remove the pick-up...

  • Page 126

    02/2000 4-16 docuprint n2025/n2825 rep 2.8, rep 2.9 initial issue repair-adjustment rep 2.8 mbf feed solenoid parts list on pl 4.2 removal warning switch off the power and disconnect the power cord. 1. Remove the mbf assembly (rep 2.1). 2. Remove the mbf gear cover (rep 1.8). 3. Remove the pick-up s...

  • Page 127

    02/2000 4-17 docuprint n2025/n2825 rep 2.10, rep 2.11 repair-adjustment initial issue rep 2.10 tray 1 feed roll parts list on pl 4.1 removal warning switch off the power and disconnect the power cord. 1. Remove the mbf assembly (rep 2.1). 2. Turn the mbf up-side down. 3. Release the tray 1 feed sole...

  • Page 128

    02/2000 4-18 docuprint n2025/n2825 rep 2.10, rep 2.11 initial issue repair-adjustment.

  • Page 129

    02/2000 4-19 docuprint n2025/n2825 rep 3.1, rep 3.2 repair-adjustment initial issue rep 3.1 retard chute assembly parts list on pl 11.3 removal warning switch off the power and disconnect the power cord. 1. Open the top cover and remove the print cartridge. Cover the cartridge to protect it from lig...

  • Page 130

    02/2000 4-20 docuprint n2025/n2825 rep 3.3, rep 3.4 initial issue repair-adjustment rep 3.3 lower turn roll assembly parts list on pl 3.1 removal warning switch off the power and disconnect the power cord. 1. Open the top cover and remove the print cartridge. Cover the cartridge to protect it from l...

  • Page 131

    02/2000 4-21 docuprint n2025/n2825 rep 3.5 repair-adjustment initial issue rep 3.5 tray 1 right guide assembly parts list on pl 3.1 removal warning switch off the power and disconnect the power cord. 1. Open the rear cover. 2. Open the top cover and remove the print cartridge. Cover the cartridge to...

  • Page 132

    02/2000 4-22 docuprint n2025/n2825 rep 3.6 initial issue repair-adjustment rep 3.6 tray 1 left guide assembly parts list on pl 3.1 removal warning switch off the power and disconnect the power cord. 1. Open the top cover and remove the print cartridge. Cover the cartridge to protect it from light. 2...

  • Page 133

    02/2000 4-23 docuprint n2025/n2825 rep 3.7 repair-adjustment initial issue rep 3.7 mbf assembly position parts list on pl 4.2 removal warning switch off the power and disconnect the power cord. 1. Open the top cover and remove the print cartridge. Cover the cartridge to protect it from light. 2. Rem...

  • Page 134

    02/2000 4-24 docuprint n2025/n2825 rep 3.7 initial issue repair-adjustment.

  • Page 135

    02/2000 4-25 docuprint n2025/n2825 rep 4.1 repair-adjustment initial issue rep 4.1 paper transport assembly parts list on pl 5.1 removal warning switch off the power and disconnect the power cord. 1. Open the rear cover. 2. Remove the fuser assembly (rep 5.1). 3. Open the top cover and remove the pr...

  • Page 136

    02/2000 4-26 docuprint n2025/n2825 rep 4.2 initial issue repair-adjustment rep 4.2 registration actuator parts list on pl 5.1 removal warning switch off the power and disconnect the power cord. 1. Open the rear cover. 2. Remove the fuser assembly (rep 5.1). 3. Open the top cover and remove the print...

  • Page 137

    02/2000 4-27 docuprint n2025/n2825 rep 4.3, rep 4.4 repair-adjustment initial issue rep 4.3 registration clutch parts list on pl 5.1 removal warning switch off the power and disconnect the power cord. 1. Open the rear cover. 2. Remove the fuser assembly (rep 5.1). 3. Open the top cover and remove th...

  • Page 138

    02/2000 4-28 docuprint n2025/n2825 rep 4.5, rep 4.6 initial issue repair-adjustment rep 4.5 rubber registration roll parts list on pl 5.1 removal warning switch off the power and disconnect the power cord. 1. Open the rear cover. 2. Remove the fuser assembly (rep 5.1). 3. Open the top cover and remo...

  • Page 139

    02/2000 4-29 docuprint n2025/n2825 rep 5.1, rep 5.2 repair-adjustment initial issue rep 5.1 fuser assembly parts list on pl 6.2 removal warning switch off the power and disconnect the power cord. Warning if the printer has been in operation, the fuser may be hot. 1. Open the rear cover. 2. Move the ...

  • Page 140

    02/2000 4-30 docuprint n2025/n2825 rep 5.2, rep 5.3 initial issue repair-adjustment figure 2 upper exit chute figure 3 stack full sensor replacement 1. Reinstall the components in the reverse order. Note: the two shoulder screws go in the right end of the lower exit chute assembly (figure 1). Rep 5....

  • Page 141

    02/2000 4-31 docuprint n2025/n2825 rep 5.4 repair-adjustment initial issue rep 5.4 exit gate chute parts list on pl 6.1 removal warning switch off the power and disconnect the power cord. 1. Open and remove the rear cover (rep 1.9). 2. Remove the four screws that secure the lower exit chute assembly...

  • Page 142

    02/2000 4-32 docuprint n2025/n2825 rep 5.5 initial issue repair-adjustment rep 5.5 exit roll assembly parts list on pl 6.1 removal warning switch off the power and disconnect the power cord. 1. Open the rear cover. 2. Remove the rear cover (rep 1.9). 3. Remove the four screws that secure the lower e...

  • Page 143

    02/2000 4-33 docuprint n2025/n2825 rep 5.5 repair-adjustment initial issue figure 4 lower exit roll assembly replacement 1. Reinstall the components in the reverse order..

  • Page 144

    02/2000 4-34 docuprint n2025/n2825 rep 5.5 initial issue repair-adjustment.

  • Page 145

    02/2000 4-35 docuprint n2025/n2825 rep 6.1 repair-adjustment initial issue rep 6.1 main gear drive assembly parts list on pl 7.1 removal warning switch off the power and disconnect the power cord. 1. Remove the lower rear cover (rep 1.7). 2. Open the rear cover. 3. Remove the fuser assembly (rep 5.1...

  • Page 146

    02/2000 4-36 docuprint n2025/n2825 rep 6.2 initial issue repair-adjustment rep 6.2 main motor assembly parts list on pl 7.1 removal warning switch off the power and disconnect the power cord. 1. Remove the gear assembly (rep 6.1). 2. Remove the three screws that secure the motor assembly to the gear...

  • Page 147

    02/2000 4-37 docuprint n2025/n2825 rep 7.1 repair-adjustment initial issue rep 7.1 laser assembly parts list on pl 8.1 removal caution these components are susceptible to electrostatic discharge. Observe all esd procedures to avoid damage. Warning switch off the power and disconnect the power cord. ...

  • Page 148

    02/2000 4-38 docuprint n2025/n2825 rep 7.2 initial issue repair-adjustment rep 7.2 right print cartridge guide assembly parts list on pl 8.1 removal warning switch off the power and disconnect the power cord. 1. Remove the lower rear cover (rep 1.7). 2. Open and remove the rear cover (rep 1.9). 3. R...

  • Page 149

    02/2000 4-39 docuprint n2025/n2825 rep 7.3, rep 7.4 repair-adjustment initial issue rep 7.3 toner sensor assembly parts list on pl 8.1 removal warning switch off the power and disconnect the power cord. 1. Open the top cover and remove the print cartridge. Cover the cartridge to protect it from ligh...

  • Page 150

    02/2000 4-40 docuprint n2025/n2825 rep 7.4, rep 7.5 initial issue repair-adjustment figure 2 print cartridge sensor replacement 1. Reinstall the components in the reverse order. Rep 7.5 top cover interlock switch parts list on pl 8.1 removal warning switch off the power and disconnect the power cord...

  • Page 151

    02/2000 4-41 docuprint n2025/n2825 rep 7.6, rep 7.7 repair-adjustment initial issue rep 7.6 left print cartridge guide assembly parts list on pl 8.1 removal warning switch off the power and disconnect the power cord. 1. Open the rear cover. 2. Open the top cover and remove the print cartridge. Cover...

  • Page 152

    02/2000 4-42 docuprint n2025/n2825 rep 7.6, rep 7.7 initial issue repair-adjustment.

  • Page 153

    02/2000 4-43 docuprint n2025/n2825 rep 8.1 repair-adjustment initial issue rep 8.1 system controller pwb parts list on pl 9.1 removal caution these components are susceptible to electrostatic discharge. Observe all esd procedures to avoid damage. Warning turn the power off and disconnect the power c...

  • Page 154

    02/2000 4-44 docuprint n2025/n2825 rep 8.1, rep 8.2 initial issue repair-adjustment figure 3 system controller pwb replacement 1. Reinstall the components in the reverse order. Rep 8.2 hvps pwb parts list on pl 9.1 removal caution these components are susceptible to electrostatic discharge. Observe ...

  • Page 155

    02/2000 4-45 docuprint n2025/n2825 rep 8.3, rep 8.4 repair-adjustment initial issue rep 8.3 duplex interface pwb parts list on pl 11.1 removal caution these components are susceptible to electrostatic discharge. Observe all esd procedures to avoid damage. Warning switch off the power and disconnect ...

  • Page 156

    02/2000 4-46 docuprint n2025/n2825 rep 8.5 initial issue repair-adjustment rep 8.5 print engine controller pwb parts list on pl 9.1 removal caution these components are susceptible to electrostatic discharge. Observe all esd procedures to avoid damage. Warning switch off the power and disconnect the...

  • Page 157

    02/2000 4-47 docuprint n2025/n2825 rep 8.6, rep 8.7 repair-adjustment initial issue rep 8.6 lvps assembly parts list on pl 9.2 removal caution these components are susceptible to electrostatic discharge. Observe all esd procedures to avoid damage. Warning switch off the power and disconnect the powe...

  • Page 158

    02/2000 4-48 docuprint n2025/n2825 rep 8.8, rep 8.9 initial issue repair-adjustment rep 8.8 ac input assembly parts list on pl 9.2 removal caution these components are susceptible to electrostatic discharge. Observe all esd procedures to avoid damage. Warning switch off the power and disconnect the ...

  • Page 159

    02/2000 4-49 docuprint n2025/n2825 rep 8.9 repair-adjustment initial issue figure 2 print engine controller pwb cover figure 3 +5 vdc power supply replacement 1. Reinstall the components in the reverse order..

  • Page 160

    02/2000 4-50 docuprint n2025/n2825 rep 8.9 initial issue repair-adjustment.

  • Page 161

    02/2000 4-51 docuprint n2025/n2825 rep 9.1, rep 9.2 repair-adjustment initial issue rep 9.1 duplex assembly parts list on pl 13.1 removal warning switch off the power and disconnect the power cord. 1. Open the rear cover. 2. Remove left cover (rep 1.1). 3. Pull the top of the duplex assembly away fr...

  • Page 162

    02/2000 4-52 docuprint n2025/n2825 rep 9.3, rep 9.4 initial issue repair-adjustment rep 9.3 drive belt parts list on pl 13.1 removal warning switch off the power and disconnect the power cord. 1. Remove the duplex assembly (rep 9.1). 2. Remove the e-ring and collar from the right end of the upper ro...

  • Page 163

    02/2000 4-53 docuprint n2025/n2825 rep 9.5, rep 9.6 repair-adjustment initial issue rep 9.5 lower roll assembly parts list on pl 13.1 removal warning switch off the power and disconnect the power cord. 1. Remove the duplex assembly (rep 9.1). 2. Remove the e-ring and bearing from the left end of the...

  • Page 164

    02/2000 4-54 docuprint n2025/n2825 rep 9.7, rep 9.8 initial issue repair-adjustment rep 9.7 duplex pwb parts list on pl 13.1 removal warning switch off the power and disconnect the power cord. 1. Remove the duplex assembly (rep 9.1). 2. Disconnect p/j508, p/j510, and p/j512 from the duplex pwb (figu...

  • Page 165

    02/2000 4-55 docuprint n2025/n2825 rep 10.1, rep 10.2 repair-adjustment initial issue rep 10.1 offset catch tray (oct) parts list on pl 10.1 removal warning switch off the power and disconnect the power cord. 1. Open the printer rear cover. 2. Loosen the thumb screw located on the inside of the righ...

  • Page 166

    02/2000 4-56 docuprint n2025/n2825 rep 10.3, rep 10.4 initial issue repair-adjustment rep 10.3 rear cover assembly parts list on pl 10.1 removal warning switch off the power and disconnect the power cord. 1. Open the oct rear cover. 2. Rotate the cover strap 90o and remove (figure 1). 3. Carefully p...

  • Page 167

    02/2000 4-57 docuprint n2025/n2825 rep 10.5, rep 10.6 repair-adjustment initial issue rep 10.5 exit gate solenoid parts list on pl 10.1 removal warning switch off the power and disconnect the power cord. 1. Open the printer rear cover. 2. Press the locking tab and disconnect p/j519 from the rear cov...

  • Page 168

    02/2000 4-58 docuprint n2025/n2825 rep 10.7, rep 10.8 initial issue repair-adjustment rep 10.7 stack full sensor parts list on pl 10.2 removal warning switch off the power and disconnect the power cord. 1. Open the oct rear cover. 2. Remove the oct top cover (rep 10.2). 3. Disconnect p/j521 from the...

  • Page 169

    02/2000 4-59 docuprint n2025/n2825 rep 10.9, rep 10.10 repair-adjustment initial issue rep 10.9 offset motor assembly parts list on pl 10.2 removal warning switch off the power and disconnect the power cord. 1. Open the oct rear cover. 2. Remove the oct top cover (rep 10.2). 3. Remove the two screws...

  • Page 170

    02/2000 4-60 docuprint n2025/n2825 rep 10.11 initial issue repair-adjustment rep 10.11 offset assembly parts list on pl 10.2 removal warning switch off the power and disconnect the power cord. 1. Remove the oct rear cover (rep 10.3). 2. Remove the oct top cover (rep 10.2). 3. Remove the oct front co...

  • Page 171

    02/2000 4-61 docuprint n2025/n2825 rep 10.12, rep 10.13 repair-adjustment initial issue rep 10.12 offset roller parts list on pl 10.2 removal warning switch off the power and disconnect the power cord. 1. Remove the oct rear cover (rep 10.3). 2. Remove the oct top cover (rep 10.2). 3. Remove the eli...

  • Page 172

    02/2000 4-62 docuprint n2025/n2825 rep 10.14, rep 10.15 initial issue repair-adjustment rep 10.14 oct pwb parts list on pl 10.2 removal caution these components are susceptible to electrostatic discharge. Observe all esd procedures to avoid damage. Warning switch off the power and disconnect the pow...

  • Page 173

    02/2000 4-63 docuprint n2025/n2825 rep 11.1, rep 11.2 repair-adjustment initial issue rep 11.1 printer removal parts list on pl 11.1 removal warning switch off the power and disconnect the power cord. 1. Remove the oct, if installed (rep 10.1). 2. Remove tray 1 from the printer. 3. Remove the two sc...

  • Page 174

    02/2000 4-64 docuprint n2025/n2825 rep 11.3, rep 11.4 initial issue repair-adjustment rep 11.3 left cover parts list on pl 11.1 removal warning switch off the power and disconnect the power cord. 1. Remove the paper tray from the feeder. 2. Remove the front cover (rep 11.2). 3. Remove the five screw...

  • Page 175

    02/2000 4-65 docuprint n2025/n2825 rep 11.5, rep 11.6 repair-adjustment initial issue rep 11.5 rear cover parts list on pl 11.1 removal warning switch off the power and disconnect the power cord. 1. Open the rear cover. 2. Carefully pry the left hinge pin (as viewed from the rear of the feeder) out ...

  • Page 176

    02/2000 4-66 docuprint n2025/n2825 rep 11.7, rep 11.8 initial issue repair-adjustment rep 11.7 drive motor parts list on pl 11.2 removal warning switch off the power and disconnect the power cord. 1. Remove the paper tray from the feeder. 2. Remove the front cover (rep 11.2). 3. Remove the left cove...

  • Page 177

    02/2000 4-67 docuprint n2025/n2825 rep 11.9 repair-adjustment initial issue rep 11.9 feed head assembly parts list on pl 11.3 removal warning switch off the power and disconnect the power cord. 1. Remove the printer from the 500 sheet paper feeder (rep 11.1). 2. Remove the paper tray from the feeder...

  • Page 178

    02/2000 4-68 docuprint n2025/n2825 rep 11.10, rep 11.11 initial issue repair-adjustment rep 11.10 feed rolls parts list on pl 11.2 removal warning switch off the power and disconnect the power cord. 1. Remove the printer from the 500 sheet feeder (rep 11.1). 2. Remove the paper tray from the feeder....

  • Page 179

    02/2000 4-69 docuprint n2025/n2825 rep 11.12, rep 11.13 repair-adjustment initial issue rep 11.12 turn roll assembly parts list on pl 11.2 removal warning switch off the power and disconnect the power cord. 1. Remove the printer from the 500 sheet feeder (rep 11.1). 2. Remove the paper tray from the...

  • Page 180

    02/2000 4-70 docuprint n2025/n2825 rep 11.14 initial issue repair-adjustment rep 11.14 left tray guide parts list on pl 11.3 removal warning switch off the power and disconnect the power cord. 1. Remove the printer from the 500 sheet feeder (rep 11.1). 2. Remove the paper tray from the feeder. 3. Re...

  • Page 181

    02/2000 4-71 docuprint n2025/n2825 rep 11.15 repair-adjustment initial issue rep 11.15 right tray guide parts list on pl 11.3 removal warning switch off the power and disconnect the power cord. 1. Remove the printer from the 500 sheet feeder (rep 11.1). 2. Remove the paper tray from the feeder. 3. R...

  • Page 182

    02/2000 4-72 docuprint n2025/n2825 rep 11.16, rep 11.17 initial issue repair-adjustment rep 11.16 retard holder assembly parts list on pl 11.3 removal warning switch off the power and disconnect the power cord. 1. Remove the printer from the 500 sheet feeder (rep 11.1). 2. Remove the paper tray from...

  • Page 183

    02/2000 4-73 docuprint n2025/n2825 rep 11.18, rep 11.19 repair-adjustment initial issue rep 11.18 paper size sensor parts list on pl 11.3 removal warning switch off the power and disconnect the power cord. 1. Remove the printer from the 500 sheet feeder (rep 11.1). 2. Remove the paper tray from the ...

  • Page 184

    02/2000 4-74 docuprint n2025/n2825 rep 11.20 initial issue repair-adjustment rep 11.20 no paper sensor parts list on pl 11.2 removal warning switch off the power and disconnect the power cord. 1. Remove the printer from the 500 sheet feeder (rep 11.1). 2. Remove the paper tray from the feeder. 3. Re...

  • Page 185

    02/2000 4-75 docuprint n2025/n2825 rep 11.21, rep 11.22 repair-adjustment initial issue rep 11.21 no paper actuator parts list on pl 11.2 removal warning switch off the power and disconnect the power cord. 1. Remove the printer from the 500 sheet feeder (rep 11.1). 2. Remove the paper tray from the ...

  • Page 186

    02/2000 4-76 docuprint n2025/n2825 rep 11.21, rep 11.22 initial issue repair-adjustment.

  • Page 187

    02/2000 4-77 docuprint n2025/n2825 rep 12.1 repair-adjustment initial issue rep 12.1 removing printer from 2000 sheet feeder parts list on pl 12.1 removal warning switch off the power and disconnect the power cord. 1. Lock the front casters on the 2000 sheet feeder (figure 1). 2. Remove the oct, if ...

  • Page 188

    02/2000 4-78 docuprint n2025/n2825 rep 12.2, rep 12.3 initial issue repair-adjustment rep 12.2 left side cover parts list on pl 12.1 removal warning switch off the power and disconnect the power cord. 1. Remove the two screws that secure the left side cover (figure 1). 2. Pull the top of the cover o...

  • Page 189

    02/2000 4-79 docuprint n2025/n2825 rep 12.4, rep 12.5 repair-adjustment initial issue rep 12.4 lower rear cover parts list on pl 12.1 removal warning switch off the power and disconnect the power cord. 1. Remove the two screws that secure the top of the lower rear cover (figure 1). 2. Loosen three s...

  • Page 190

    02/2000 4-80 docuprint n2025/n2825 rep 12.6, rep 12.7 initial issue repair-adjustment rep 12.6 front cover parts list on pl 12.1 removal warning switch off the power and disconnect the power cord. 1. Open the 2000 sheet feeder tray. 2. Remove the two screws that secure the front cover (figure 1). 3....

  • Page 191

    02/2000 4-81 docuprint n2025/n2825 rep 12.8, rep 12.9 repair-adjustment initial issue rep 12.8 left foot parts list on pl 12.1 removal warning switch off the power and disconnect the power cord. 1. Remove the lower rear cover (rep 12.4). 2. Open the 2000 sheet feeder tray. 3. Remove the two screws t...

  • Page 192

    02/2000 4-82 docuprint n2025/n2825 rep 12.10, rep 12.11 initial issue repair-adjustment rep 12.10 2000 sheet feeder pwb parts list on pl 12.2 removal caution these components are susceptible to electrostatic discharge. Observe all esd procedures to avoid damage. Warning switch off the power and disc...

  • Page 193

    02/2000 4-83 docuprint n2025/n2825 rep 12.12 a4, rep 12.13 repair-adjustment initial issue rep 12.12 a4 paper size sensor parts list on pl 12.2 removal warning switch off the power and disconnect the power cord. 1. Remove the 2000 sheet feeder tray assembly (rep 12.7). 2. Disconnect p/j612 from the ...

  • Page 194

    02/2000 4-84 docuprint n2025/n2825 rep 12.14, rep 12.15 initial issue repair-adjustment rep 12.14 harness assembly parts list on pl 12.2 removal warning switch off the power and disconnect the power cord. 1. Remove the printer / 500 sheet feeder (rep 12.1). 2. Remove the left side cover (rep 12.2). ...

  • Page 195

    02/2000 4-85 docuprint n2025/n2825 rep 12.16, rep 12.17 repair-adjustment initial issue rep 12.16 feed, nudger, and retard roll parts list on pl 12.3 removal warning switch off the power and disconnect the power cord. 1. Open the 2000 sheet feeder tray. 2. Open the upper rear cover. 3. From the rear...

  • Page 196

    02/2000 4-86 docuprint n2025/n2825 rep 12.18, rep 12.19 initial issue repair-adjustment rep 12.18 paper feed motor assembly parts list on pl 12.3 removal warning switch off the power and disconnect the power cord. 1. Remove the right side cover (rep 12.5). 2. Remove the e-ring that secures the 47t g...

  • Page 197

    02/2000 4-87 docuprint n2025/n2825 rep 12.20, rep 12.21 repair-adjustment initial issue rep 12.20 no paper sensor parts list on pl 12.3 removal warning switch off the power and disconnect the power cord. 1. Remove the tray assembly (rep 12.7). 2. Disconnect p/j610 from the no paper sensor (figure 1)...

  • Page 198

    02/2000 4-88 docuprint n2025/n2825 rep 12.22 initial issue repair-adjustment rep 12.22 left and right side guides parts list on pl 12.4 removal warning switch off the power and disconnect the power cord. 1. Open the 2000 sheet feeder tray assembly until it stops. 2. Remove all paper from the tray. 3...

  • Page 199

    02/2000 4-89 docuprint n2025/n2825 rep 12.23 repair-adjustment initial issue rep 12.23 left and right wire cover parts list on pl 12.4 removal warning switch off the power and disconnect the power cord. 1. Open the 2000 sheet feeder tray assembly until it stops. 2. Remove the two screws that secure ...

  • Page 200

    02/2000 4-90 docuprint n2025/n2825 rep 12.24, rep 12.25 initial issue repair-adjustment rep 12.24 shaft cover assembly parts list on pl 12.4 removal warning switch off the power and disconnect the power cord. 1. Remove the 2000 sheet feeder tray assembly (rep 12.7). 2. Remove the four screws that se...

  • Page 201

    02/2000 4-91 docuprint n2025/n2825 rep 12.26, rep 12.27 repair-adjustment initial issue rep 12.26 brake assembly parts list on pl 12.4 removal warning switch off the power and disconnect the power cord. 1. Remove the 2000 sheet feeder tray assembly (rep 12.7). 2. Remove the two screws that secure th...

  • Page 202

    02/2000 4-92 docuprint n2025/n2825 rep 12.28, rep 12.29 initial issue repair-adjustment rep 12.28 right tray wires parts list on pl 12.4 removal warning switch off the power and disconnect the power cord. 1. Remove the 2000 sheet feeder tray assembly (rep 12.7). 2. Remove the shaft cover assembly (r...

  • Page 203

    02/2000 4-93 docuprint n2025/n2825 rep 12.29 repair-adjustment initial issue figure 2 retard assembly replacement 1. Reinstall the components in the reverse order..

  • Page 204

    02/2000 4-94 docuprint n2025/n2825 rep 12.29 initial issue repair-adjustment.

  • Page 205

    02/2000 4-95 docuprint n2025/n2825 adj 1.1 repair-adjustment initial issue adj 1.1 registration purpose to adjust the registration in the scan direction and the process direction. To set default tray 1. Enter diagnostics and select test print. 2. Scroll to input tray. 3. Select the tray that you wis...

  • Page 206

    02/2000 4-96 docuprint n2025/n2825 adj 1.1 initial issue repair-adjustment.

  • Page 207

    02/2000 5-1 docuprint n2025/n2825 parts-list initial issue 5 parts-list introduction ..................................................................................................................... 5-3 covers pl 1.1 covers ...........................................................................

  • Page 208

    02/2000 5-2 docuprint n2025/n2825 initial issue parts-list.

  • Page 209

    02/2000 5-3 docuprint n2025/n2825 introduction parts-list initial issue introduction overview the parts list section provides exploded view illustrations of all spared subsystem components and a listing of the corresponding part numbers. The illustrations show the relationships between parts. Organi...

  • Page 210

    02/2000 5-4 docuprint n2025/n2825 pl 1.1 initial issue parts-list pl 1.1 covers item part description 1 48k75876 top cover assembly (includes 2- 15, 21, 22) 2 - - - - - top cover 3 3e46230 stopper (left) 4 - - - - - bracket (left) 5 48e64291 top cover cap 6 48e64082 left cover 7 - - - - - bracket (r...

  • Page 211

    02/2000 5-5 docuprint n2025/n2825 pl 2.1 parts-list initial issue pl 2.1 paper tray (a3/ledger) item part description 1 109r00484 tray assembly (a3/ledger) (includes 2-28) - - - - - tray assembly a3/ledger 2 - - - - - bottom 3 - - - - - latch spring 4 - - - - - side guide plate (left) 5 - - - - - si...

  • Page 212

    02/2000 5-6 docuprint n2025/n2825 pl 2.2 initial issue parts-list pl 2.2 paper tray (a4/letter) item part description 1 109r00485 tray assembly (short) (includes 2- 33) - - - - - tray assembly a4/letter 2 - - - - - bottom plate assembly 3 - - - - - latch spring 4 - - - - - side guide plate (left) 5 ...

  • Page 213

    02/2000 5-7 docuprint n2025/n2825 pl 3.1 parts-list initial issue pl 3.1 paper feeder item part description 1 54k13043 rear chute assembly (includes 2- 4) 2 - - - - - chute (rear) 3 - - - - - pinch roll 4 - - - - - pinch spring 5 - - - - - rod gg (p/o item 16) 6 - - - - - collar gg (p/o item 16) 7 -...

  • Page 214

    02/2000 5-8 docuprint n2025/n2825 pl 4.1 initial issue parts-list pl 4.1 mbf assembly item part description 1 59k15221 mbf assembly [includes 2, 5-11, 13-24 (pl 4.1), 2-5, 7-11, 13-16, 18-31 (pl 4.2)] 2 - - - - - tray assembly 3 3k8552 latch assembly (left) 4 - - - - - upper guide 5 809e15350 mbf sp...

  • Page 215

    02/2000 5-9 docuprint n2025/n2825 pl 4.2 parts-list initial issue pl 4.2 paper handler item part description 1 600k72192 retard holder assembly (includes 2-4) 2 - - - - - nip spring (p/o item 1) 3 - - - - - retard holder (p/o item 1) 4 - - - - - retard pad (p/o item 1) 5 - - - - - n/f spring 6 600k7...

  • Page 216

    02/2000 5-10 docuprint n2025/n2825 pl 5.1 initial issue parts-list pl 5.1 paper transport item part description 1 54k14698 paper transport assembly (includes 2-15) 2 - - - - - chute transport 3 - - - - - btr bearing 4 - - - - - btr spring 5 - - - - - registration actuator 6 - - - - - sensor spring 7...

  • Page 217

    02/2000 5-11 docuprint n2025/n2825 pl 6.1 parts-list initial issue pl 6.1 rear cover assembly item part description 1 802k04575 rear cover assembly (includes 2- 22) 2 - - - - - cover gate gear assembly 3 - - - - - z20/20 gear 4 - - - - - cover gate spring gear 5 - - - - - z37 gear 6 - - - - - z27 ge...

  • Page 218

    02/2000 5-12 docuprint n2025/n2825 pl 6.2 initial issue parts-list pl 6.2 fuser item part description 1 802k04575 rear cover assembly 2 - - - - - exit strap kit (2 pieces) 3 - - - - - exit spring ground 4 - - - - - exit plate ground 5 109r00481 fuser assembly 110v (customer purchase) 109r00482 fuser...

  • Page 219

    02/2000 5-13 docuprint n2025/n2825 pl 7.1 parts-list initial issue pl 7.1 frame & drives item part description 1 - - - - - laser cover 2 - - - - - oct bracket (left) 3 - - - - - lower rear cover (reference only) 4 809e10940 main drive motor spring kit (p/o item 10) 5 - - - - - clamp 6 - - - - - lase...

  • Page 220

    02/2000 5-14 docuprint n2025/n2825 pl 8.1 initial issue parts-list pl 8.1 xerographics item part description 1 113r00443 print cartridge 2 62k99106 laser assembly (with 3,4 22) 3 - - - - - laser harness assembly (j115-1- j115-2) 4 - - - - - laser (reference only) 5 32k93933 print cartridge guide ass...

  • Page 221

    02/2000 5-15 docuprint n2025/n2825 pl 9.1 parts-list initial issue pl 9.1 electrical item part description 1 160k5440 system controller pwb 2 - - - - - i/f assembly (includes 3-6) 3 - - - - - cover shield 4 - - - - - thumb screws 5 - - - - - mcu cover 6 - - - - - rear panel 7 105k14750 5v power supp...

  • Page 222

    02/2000 5-16 docuprint n2025/n2825 pl 9.2 initial issue parts-list pl 9.2 electrical item part description 1 162k42681 harness assembly lvps (j161- j16, j506) 2 105k14972 low voltage power supply 110v 105k14962 low voltage power supply 220v 3 162k42691 system controller harness assembly 3.3v (j163-j...

  • Page 223

    02/2000 5-17 docuprint n2025/n2825 pl 10.1 parts-list initial issue pl 10.1 offsetting catch tray (1 of 2) item part description 1 - - - - - oct assembly (includes 2-12) 2 48e64791 top cover 3 3e47341 paper weight 4 48k76362 rear cover assembly (includes 5- 8) 5 - - - - - rear cover 6 - - - - - hold...

  • Page 224

    02/2000 5-18 docuprint n2025/n2825 pl 10.2 initial issue parts-list pl 10.2 offsetting catch tray (2 of 2) item part description 1 48k76356 oct assembly (with 2-32) 2 - - - - - eliminator assembly (with 3, 4) 3 - - - - - stack full bracket 4 - - - - - eliminator (left) 5 162k43580 stack full sensor ...

  • Page 225

    02/2000 5-19 docuprint n2025/n2825 pl 11.1 parts-list initial issue pl 11.1 500 sheet feeder (1 of 3) item part description 1 - - - - - complete feeder assembly (customer purchased item) 2 802k11761 rear cover assembly (includes 3- 10) 3 - - - - - latch (p/o item 2) 4 802e03102 front cover (p/o item...

  • Page 226

    02/2000 5-20 docuprint n2025/n2825 pl 11.2 initial issue parts-list pl 11.2 500 sheet feeder (2 of 3) item part description 1 - - - - - complete feeder assembly (customer purchased item) 2 15k39480 gear bracket assembly 28 3 - - - - - feeder sub assembly (same as pl 11.3, item 1) 4 54k14725 feed hea...

  • Page 227

    02/2000 5-21 docuprint n2025/n2825 pl 11.3 parts-list initial issue pl 11.3 500 sheet feeder (3 of 3) item part description 1 - - - - - complete feeder assembly (customer purchased item) 2 - - - - - frame assembly 3 - - - - - gg rod 4 - - - - - gg collar assembly (includes 5, 6) 5 - - - - - retard l...

  • Page 228

    02/2000 5-22 docuprint n2025/n2825 pl 12.1 initial issue parts-list pl 12.1 2000 sheet feeder (1 of 4) item part description 1 - - - - - assembly (with 2-11) 2 48k77441 left side cover assembly. 3 - - - - - 2000 sheet feeder r/h cover assembly. 4 - - - - - folder magnet 5 48k77533 2000 sheet feeder ...

  • Page 229

    02/2000 5-23 docuprint n2025/n2825 pl 12.2 parts-list initial issue pl 12.2 2000 sheet feeder (2 of 4) item part description 1 - - - - - 2000 sheet feeder frame & drive assembly. (with 2-19) (reference only) 2 - - - - - bushing 3 160k53033 2000 sheet feeder pwb 4 162k47560 2000 sheet feeder sw harne...

  • Page 230

    02/2000 5-24 docuprint n2025/n2825 pl 12.3 initial issue parts-list pl 12.3 2000 sheet feeder (3 of 4) item part description 1 50k33810 2000 sheet feeder retard assembly (with 2-7) 2 - - - - - roll assembly (see kit) (p/o item 1) 600k78460 2000 sheet feeder feed roll kit (3 pieces) (p/o item 1) 3 - ...

  • Page 231

    02/2000 5-25 docuprint n2025/n2825 pl 12.4 parts-list initial issue pl 12.4 2000 sheet feeder (4 of 4) item part description 1 - - - - - 2000 sheet feeder tray assembly (with 2-25) 2 2000 sheet feeder housing assembly 3 - - - - - left side guide (p/o item 26) 4 19k94630 brake assembly 5 - - - - - ri...

  • Page 232

    02/2000 5-26 docuprint n2025/n2825 pl 13.1 initial issue parts-list pl 13.1 duplex item part description 1 - - - - - duplex assembly (includes 2-27) 2 - - - - - exit motor assembly 3 - - - - - duplex motor cover 4 - - - - - duplex motor case 5 - - - - - duplex gear 33 6 - - - - - clamp 7 - - - - - d...

  • Page 233

    02/2000 6-1 docuprint n2025/n2825 general procedures / information initial issue 6 general procedures / information introduction gp 1.1 introduction ......................................................................................................... 6-3 product specifications gp 2.1 printer spe...

  • Page 234

    02/2000 6-2 docuprint n2025/n2825 initial issue general procedures / information.

  • Page 235

    02/2000 6-3 docuprint n2025/n2825 gp 1.1 general procedures / information initial issue gp 1.1 introduction the following information is contained within this section: general procedures includes the operations menu map and the service mode menu map. It includes all unique service operations and the...

  • Page 236

    02/2000 6-4 docuprint n2025/n2825 gp 1.1 initial issue general procedures / information.

  • Page 237

    02/2000 6-5 docuprint n2025/n2825 gp 2.1 general procedures / information initial issue gp 2.1 printer specifications contents 1. Basic specifications table 1 2. Electrical specifications table 2 3. Mechanical specifications table 3 4. Environmental specifications table 4 5. Life table 5 6. Conformi...

  • Page 238

    02/2000 6-6 docuprint n2025/n2825 gp 2.1 initial issue general procedures / information 1. Basic specifications 2. Electrical specifications 3. Mechanical specifications table 1 basic specifications category specification standard configuration print engine- mbf- 500-sheet paper feeder- a4/letter ca...

  • Page 239

    02/2000 6-7 docuprint n2025/n2825 gp 2.1 general procedures / information initial issue 4. Environmental specifications 5. Life table 4 environmental specifications environmental condi- tions for installation (printer unpacked and having the print car- tridge installed) operating: 41 ~ 95 ° f (5 ~ 3...

  • Page 240

    02/2000 6-8 docuprint n2025/n2825 gp 2.1 initial issue general procedures / information 6. Conforming regulations and standards 7. Printing speed 7.1 printing speed for the first sheet out 7.2 consecutive printing speed after the first sheet out 8. Printing media feeding means the n2025/n2825 printe...

  • Page 241

    02/2000 6-9 docuprint n2025/n2825 gp 2.1 general procedures / information initial issue * factory set option † supported envelope is 60 to 105 gsm in weight. Supported postcard is 190 gsm in weight. 8.3 mbf [mbf] (standard) the mbf can hold the following regular or non-regular sizes of paper. • weig...

  • Page 242

    02/2000 6-10 docuprint n2025/n2825 gp 2.1 initial issue general procedures / information 9.3 paper feedable from the universal paper cassettes @*: standard, m: feedable*: printable by duplex printing 10. Printing accuracy 11. Components to be replaced periodically note: maintenance kit, supplied by ...

  • Page 243

    02/2000 6-11 docuprint n2025/n2825 gp 2.1, gp 2.2 general procedures / information initial issue * factory installed option gp 2.2 500 sheet feeder specification contents 1. Specifications 1.1 equipment components 1.1.1 basic components 1.2 electrical characteristics 1.2.1 power supply 1.3 mechanica...

  • Page 244

    02/2000 6-12 docuprint n2025/n2825 gp 2.2 initial issue general procedures / information • 24 v dc (solenoid feed cst and motor feeder) • 3.3 v dc (sensor photo and switch size) 1.3 mechanical characteristics 1.3.1 500 sheet feeder dimensions and weight the following does not include the securing sc...

  • Page 245

    02/2000 6-13 docuprint n2025/n2825 gp 2.2, gp 2.3 general procedures / information initial issue note: although we make no replacement part recommendations for users of standard a4 (landscape) sheets, we expect the replacement interval for users of nonstandard sizes, a3 sheets, etc. To be less than ...

  • Page 246

    02/2000 6-14 docuprint n2025/n2825 gp 2.3 initial issue general procedures / information 1. Specifications 1.1 equipment components 1.1.1 basic components the functional components of the duplex assembly are the duplex function for printing on both sides of the paper figure 1. Figure 1 basic compone...

  • Page 247

    02/2000 6-15 docuprint n2025/n2825 gp 2.3 general procedures / information initial issue • 1200dpi note: long roll specifications represent special options subject to the conditions of the oem contract with fuji xerox. Note: in the above tables, sef indicates feeding from the short edge of paper (a....

  • Page 248

    02/2000 6-16 docuprint n2025/n2825 gp 2.4 initial issue general procedures / information gp 2.4 offsetting catch tray specifications contents 1. Specifications 1.1 equipment components 1.1.1 basic components 1.2 electrical specifications 1.2.1 power supply 1.3 physical specifications 1.3.1 oct assem...

  • Page 249

    02/2000 6-17 docuprint n2025/n2825 gp 2.4 general procedures / information initial issue 1.2 electrical specifications 1.2.1 power supply the oct assembly operates on the following two power supplies from the base n2025/n2825 laser printer engine. • 24 vdc (for motors) • 3.3vdc (for sensor) 1.3 phys...

  • Page 250

    02/2000 6-18 docuprint n2025/n2825 gp 2.5 initial issue general procedures / information gp 2.5 2000 sheet feeder specifications contents 1. Specifications 1.1 equipment components 1.1.1 basic components 1.2 electrical characteristics 1.2.1 power supply 1.3 mechanical characteristics 1.3.1 dimension...

  • Page 251

    02/2000 6-19 docuprint n2025/n2825 gp 3.1 general procedures / information initial issue gp 3.1 control panel hardware figure 1 control panel control panel character set.

  • Page 252

    02/2000 6-20 docuprint n2025/n2825 gp 3.1 initial issue general procedures / information the international character set supported by the n2025/n2825 control panel display (figure 2) figure 2 control panel character set.

  • Page 253

    02/2000 6-21 docuprint n2025/n2825 gp 3.2 general procedures / information initial issue gp 3.2 functional overview the control panel provides the following functions: • control of the print process • recovery from operator intervention conditions • modification of system default parameters • invoca...

  • Page 254

    02/2000 6-22 docuprint n2025/n2825 gp 3.2 initial issue general procedures / information 3.2 led indicators the four led’s convey the following information to the user: "on-line" (green) when the printer is on-line this led is on. When the printer is off-line, this led is off. When transitioning fro...

  • Page 255

    02/2000 6-23 docuprint n2025/n2825 gp 3.2 general procedures / information initial issue 1. Pressing either the up menu or down menu keys enters the menu system and causes "menus" to appear on the top line and the name of the menu to appear on the bottom line. 2. Pressing the up item or down item ke...

  • Page 256

    02/2000 6-24 docuprint n2025/n2825 gp 3.2, gp 3.3 initial issue general procedures / information 6. If an entry exists in any item that contains a string, all characters to the right of the cursor, including the current cursor position, may be cleared by entering a “space” character in the current c...

  • Page 257

    02/2000 6-25 docuprint n2025/n2825 gp 3.3 general procedures / information initial issue figure 2 password menu.

  • Page 258

    02/2000 6-26 docuprint n2025/n2825 gp 3.3 initial issue general procedures / information figure 3 tray menu.

  • Page 259

    02/2000 6-27 docuprint n2025/n2825 gp 3.3 general procedures / information initial issue figure 4 pcl menu.

  • Page 260

    02/2000 6-28 docuprint n2025/n2825 gp 3.3 initial issue general procedures / information figure 5 system menu.

  • Page 261

    02/2000 6-29 docuprint n2025/n2825 gp 3.3 general procedures / information initial issue figure 6 parallel menu figure 7 serial menu.

  • Page 262

    02/2000 6-30 docuprint n2025/n2825 gp 3.3 initial issue general procedures / information figure 8 usb menu.

  • Page 263

    02/2000 6-31 docuprint n2025/n2825 gp 3.3 general procedures / information initial issue figure 9 ethernet menu.

  • Page 264

    02/2000 6-32 docuprint n2025/n2825 gp 3.3 initial issue general procedures / information figure 10 token ring menu.

  • Page 265

    02/2000 6-33 docuprint n2025/n2825 gp 3.3 general procedures / information initial issue figure 11 novell menu.

  • Page 266

    02/2000 6-34 docuprint n2025/n2825 gp 3.3 initial issue general procedures / information figure 12 print menu figure 13 reset menu.

  • Page 267

    02/2000 6-35 docuprint n2025/n2825 gp 3.4 general procedures / information initial issue gp 3.4 menu details (alphabetically) this chapter contains an alphabetic list of all the options found in the menu system. It can be used as a reference in conjunction with the menu maps in chapter 4. Each item ...

  • Page 268

    02/2000 6-36 docuprint n2025/n2825 gp 3.4 initial issue general procedures / information factory defaults - reset menu selection to reset the menus to factory defaults. This action is invoked by pressing the “enter” key. All nvm values are set to factory defaults, with the excep- tion of “language” ...

  • Page 269

    02/2000 6-37 docuprint n2025/n2825 gp 3.4 general procedures / information initial issue novel bin ps - novell menu setting to enable/disable the novell binary mode of postscript. Novell enabled - menu setting in the novell menu to enable the novell protocol. This item is common between the ethernet...

  • Page 270

    02/2000 6-38 docuprint n2025/n2825 gp 3.4, gp 3.5 initial issue general procedures / information speed - ethernet menu setting to select the speed of the 10/100base-tx ethernet interface. The default setting of “auto” allows the card to automatically sense the speed of the ethernet as either 10 or 1...

  • Page 271

    02/2000 6-39 docuprint n2025/n2825 gp 3.5 general procedures / information initial issue power saver alternating messages when not in the menu system, the top line displays one of the states described in sec. 6.1. All states described in the referenced section are mutually exclusive. Only one of the...

  • Page 272

    02/2000 6-40 docuprint n2025/n2825 gp 3.5 initial issue general procedures / information 2. The up and down “value” keys may be pressed to scroll through all the trays, displaying the size and type paper in each tray. If an alternate paper is acceptable, pressing the “enter” key will cause printing ...

  • Page 273

    02/2000 6-41 docuprint n2025/n2825 gp 3.5 general procedures / information initial issue off on 600 off on 600 off on 1200 quality/ 1200 off on 600 on off 600 on off 600 on off 1200 quality/ 1200 off off 1200 on on 600 off on 600 on on 1200 quality/ 1200 off on 600 table 4 imaging parameter relation...

  • Page 274

    02/2000 6-42 docuprint n2025/n2825 gp 3.5 initial issue general procedures / information.

  • Page 275

    02/2000 6-43 docuprint n2025/n2825 gp 4.1, gp 4.2 general procedures / information initial issue gp 4.1 system controller error codes table 1 identifies error conditions and error codes power on diagnostics sequence. Gp 4.2 power on diagnostics the controller board has the following leds: table 1 ta...

  • Page 276

    02/2000 6-44 docuprint n2025/n2825 gp 4.3 initial issue general procedures / information gp 4.3 iot diagnostics the iot diagnostics provide the ability to: • print iot test page (grid) • read or set iot nvm configuration values. • monitor and verify operation of all input sensors for iot and options...

  • Page 277

    02/2000 6-45 docuprint n2025/n2825 gp 4.3 general procedures / information initial issue the following table summarizes the operation of the control panel keys in iot diagnostics mode (figure 1). Figure 1 diagnostic menu.

  • Page 278

    02/2000 6-46 docuprint n2025/n2825 gp 4.4, gp 4.5 initial issue general procedures / information gp 4.4 test print iot grid pattern is stored in the print engine controller pwb. The grid pattern is used by ser- vice personal to identify, repair, and validate the operability of printer xerographics a...

  • Page 279

    02/2000 6-47 docuprint n2025/n2825 gp 4.5, gp 4.6 general procedures / information initial issue gp 4.6 component test this operation allows a user to test a various electrical components of the printer. The actua- tion and deactuation of switches / sensors, and the energizing / de-energizing of mot...

  • Page 280

    02/2000 6-48 docuprint n2025/n2825 gp 4.6, gp 4.7 initial issue general procedures / information note: * pressing "0" key shuts off all motors. Gp 4.7 fuser replacement strategy when the iot nvm counter of the fuser assembly reaches the end of life value (200,000 images) the following message is dis...

  • Page 281

    02/2000 6-49 docuprint n2025/n2825 gp 4.8 general procedures / information initial issue gp 4.8 system controller diagnostics system controller to provide the following diagnostic capability: • configuration sheet shows print engine controller pwb software ver. • system controller test print • syste...

  • Page 282

    02/2000 6-50 docuprint n2025/n2825 gp 4.8 initial issue general procedures / information.

  • Page 283

    02/2000 6-51 docuprint n2025/n2825 gp 5.1 general procedures / information initial issue gp 5.1 print process overview print process overview the n2025/n2825 printer uses the xerographic process to print an image on paper using video data sent from the controller. The xerographic process consists of...

  • Page 284

    02/2000 6-52 docuprint n2025/n2825 gp 5.1 initial issue general procedures / information print process description 1. Charge this step places a uniform negative electric charge on the drum surface (the outside sur- face of the photoconductive layer, to be exact*). Figure 3 the charge is given by the...

  • Page 285

    02/2000 6-53 docuprint n2025/n2825 gp 5.1 general procedures / information initial issue the laser light beam is modulated according to the video signal from the controller: switched on when the video signal denotes a black pixel point and off when it denotes a white pixel point. This is known as a ...

  • Page 286

    02/2000 6-54 docuprint n2025/n2825 gp 5.1 initial issue general procedures / information figure 5 development components figure 6 developer bias 4. Transfer this step transfers the toner image from the drum surface to paper figure 7. The btr (bias transfer roll) applies a positive charge to the back...

  • Page 287

    02/2000 6-55 docuprint n2025/n2825 gp 5.1 general procedures / information initial issue figure 7 transfer process 5. Detack this step helps the paper peel off the drum surface figure 8. The detack saw applies a negative charge to the back side of the paper to neutralize the positive charge that was...

  • Page 288

    02/2000 6-56 docuprint n2025/n2825 gp 5.1, gp 5.2 initial issue general procedures / information the toner image on the paper transferred from the drum surface is easily disturbed by a light touch with fingers. The paper with the transferred toner image must be passed through the fuser assembly to f...

  • Page 289

    02/2000 6-57 docuprint n2025/n2825 gp 5.2, gp 5.3 general procedures / information initial issue the figure below is a cut-away side view of the n2025/n2825 printer that shows the paper paths and the major components directly related to the paper transportation figure 2. For the paper paths and the ...

  • Page 290

    02/2000 6-58 docuprint n2025/n2825 gp 5.4 initial issue general procedures / information gp 5.4 drive power transmission the drive power is generated by the motor: main and transmitted through the gear assembly: main and the gear trains to the printer components requiring mechanical drive. As shown ...

  • Page 291

    02/2000 6-59 docuprint n2025/n2825 gp 5.5, gp 5.6 general procedures / information initial issue gp 5.5 drive power transmission to the mbf feed roll assembly (or cst) (1 of 2) the drive power generated by the motor: main is transmitted to the mbf feed roll assembly (or env) of the p/h assembly thro...

  • Page 292

    02/2000 6-60 docuprint n2025/n2825 gp 5.7 initial issue general procedures / information gp 5.7 drive power transmission to the turn roll assembly the drive power generated by the motor: main is transmitted to the turn clutch assembly of the turn roll assembly through the gear assembly: main, the ge...

  • Page 293

    02/2000 6-61 docuprint n2025/n2825 gp 5.8 general procedures / information initial issue gp 5.8 drive power transmission to the registration rolls the drive power generated by the motor: main is transmitted to the registration clutch through the gear assembly: main. Figure 1 & figure 2 when the regi...

  • Page 294

    02/2000 6-62 docuprint n2025/n2825 gp 5.9 initial issue general procedures / information gp 5.9 drive power transmission to the drum and the btr assembly the drive power generated by the motor: main is transmitted to the drum in the print cartridge through the main gear assembly: figure 1 & figure 2...

  • Page 295

    02/2000 6-63 docuprint n2025/n2825 gp 5.10 general procedures / information initial issue gp 5.10 drive power transmission to the fuser and the exit roll assembly the drive power generated by the main motor is transmitted to the fuser through the main gear assembly. Figure 1 & figure 2 the drive pow...

  • Page 296

    02/2000 6-64 docuprint n2025/n2825 gp 5.11 initial issue general procedures / information gp 5.11 tray1/2/3 assembly side guide plt (left and right) - figure 1 can be adjusted left and right to accommodate different paper sizes. They contact the left and right sides of the paper stack and hold the p...

  • Page 297

    02/2000 6-65 docuprint n2025/n2825 gp 5.12 general procedures / information initial issue gp 5.12 feeder size switch – figure 1 detects the paper size in the cassette assembly. The switch is actuated by the cam size cor- responded to the paper size. The contact signal is detected by the print engine...

  • Page 298

    02/2000 6-66 docuprint n2025/n2825 gp 5.12, gp 5.13 initial issue general procedures / information figure 2 full and near end sensors gp 5.13 mbf assembly mbf tray assembly – figure 1 holds paper for the front feed (bypass feed). The mbf tray assembly is depressed by the pick up cams of the mbf feed...

  • Page 299

    02/2000 6-67 docuprint n2025/n2825 gp 5.13 general procedures / information initial issue switches on and off the driver power transmission to the turn roll assembly. When the printer with the pre-feed function receives /prfd from the controller and pre-feeds paper, it de-actu- ates the turn clutch ...

  • Page 300

    02/2000 6-68 docuprint n2025/n2825 gp 5.14 initial issue general procedures / information gp 5.14 paper transport assembly btr assembly – figure 1 the bias transfer roll of the btr assembly is in contact with the drum in the print cartridge. The btr is driven by the drum gear so that the btr surface...

  • Page 301

    02/2000 6-69 docuprint n2025/n2825 gp 5.15 general procedures / information initial issue gp 5.15 exit assembly and fuser the fuser assembly includes the components for fusing (to permanently fix the toner image on the paper by heat and pressure) and those for ejecting the printed sheets out of the ...

  • Page 302

    02/2000 6-70 docuprint n2025/n2825 gp 5.15 initial issue general procedures / information figure 1 fuser assembly figure 2 fuser assembly.

  • Page 303

    02/2000 6-71 docuprint n2025/n2825 gp 5.16 general procedures / information initial issue gp 5.16 frame and drive motor:main – figure 1 generates the drive power by which the printer is operated. Gear assembly: main – includes tent gears, and distributes the driver power generated by the motor:main ...

  • Page 304

    02/2000 6-72 docuprint n2025/n2825 gp 5.17 initial issue general procedures / information gp 5.17 xerographics interlock switch – when the top cover is open, the interlock switch is turned off, and thereby the power to the fuser assembly is cut off. When the top cover is closed, the actuator of it p...

  • Page 305

    02/2000 6-73 docuprint n2025/n2825 gp 5.17, gp 5.18 general procedures / information initial issue figure 2 laser scanning gp 5.18 electrical interlock switch – figure 1 a safety switch that interrupts the supply of 24 vdc from the lvps to the print engine control- ler pwb when the top cover is open...

  • Page 306

    02/2000 6-74 docuprint n2025/n2825 gp 5.18 initial issue general procedures / information duplex interface pwb – supplies dc power to the duplex unit and offers the interface port between the print engine controller pwb and the duplex unit. Pwa:5v – supplies dc power. Figure 1 electrical components.

  • Page 307

    02/2000 6-75 docuprint n2025/n2825 gp 5.19 general procedures / information initial issue gp 5.19 power supply lvps (low voltage power supply) figure 1 the n2025/n2825 lvps is a separately-excited, feedforward switching regulator. The lvps produces +24 vdc, +5 vdc, and +5 vdc (b) voltages from ac po...

  • Page 308

    02/2000 6-76 docuprint n2025/n2825 gp 5.20 initial issue general procedures / information gp 5.20 printer controls paper size detection table 1 table 1 shows the patterns of actuated switch size and the values set with memory code nv c for the paper sizes that can be used with the n2025/n2825 printe...

  • Page 309

    02/2000 6-77 docuprint n2025/n2825 gp 5.20 general procedures / information initial issue laser warm-up completes when the three consecutive sos signal intervals are shorter than the ready reference value. (the laser motor has reached the specified speed, and is rotating steadily.) laser reference v...

  • Page 310

    02/2000 6-78 docuprint n2025/n2825 gp 5.20 initial issue general procedures / information note: if the fuser temperature has not yet reached the paper feed start temperature in the thick paper mode when the printer starts the print operation (that is, when the printer begins to feed paper), the prin...

  • Page 311

    02/2000 6-79 docuprint n2025/n2825 gp 5.21 general procedures / information initial issue gp 5.21 duplex assembly paper transportation paper is fed from the cassette assembly or the tray assembly mbf and transported through the printer to the exit along the paper paths shown below when the optional ...

  • Page 312

    02/2000 6-80 docuprint n2025/n2825 gp 5.21 initial issue general procedures / information figure 3 is a diagram that shows the gear arrangement of the duplex assembly. Figure 3 duplex assembly gear arrangement figure 4 is a cut-away side view of the duplex assembly that shows the drive power transmi...

  • Page 313

    02/2000 6-81 docuprint n2025/n2825 gp 5.21 general procedures / information initial issue the figure below is a perspective view that shows the drive power transmission through the gears of the duplex assembly. Figure 5 figure 5 drive power transmission through duplex assembly gears duplex assembly ...

  • Page 314

    02/2000 6-82 docuprint n2025/n2825 gp 5.21 initial issue general procedures / information figure 7 duplex assembly components printer control figure 8 the control of the printer with the duplex assembly installed by the controller is described here. Simplex mode and duplex mode switching the control...

  • Page 315

    02/2000 6-83 docuprint n2025/n2825 gp 5.21, gp 5.22 general procedures / information initial issue figure 10 scan direction in duplex printing duplex print control sequence duplex print can be performed in either the 1-sheet batch or 2-sheet batch duplex printing mode. In the 1-sheet batch mode, a s...

  • Page 316

    02/2000 6-84 docuprint n2025/n2825 gp 5.22 initial issue general procedures / information figure 2 paper transportation from 500 sheet feeder drive force generation and transmission the drive force for the 500 sheet feeder is transmitted from the motor feeder via drive gears and provides the force t...

  • Page 317

    02/2000 6-85 docuprint n2025/n2825 gp 5.22 general procedures / information initial issue figure 4 transmission path figure 5 transmission path.

  • Page 318

    02/2000 6-86 docuprint n2025/n2825 gp 5.22 initial issue general procedures / information figure 6 transmission path function of major components this manual skips operational descriptions of the 500 sheet feeder and cassettes since their major components function in basically the same fashion as th...

  • Page 319

    02/2000 6-87 docuprint n2025/n2825 gp 5.22 general procedures / information initial issue figure 8 major components figure 9 major components.

  • Page 320

    02/2000 6-88 docuprint n2025/n2825 gp 5.23 initial issue general procedures / information gp 5.23 offsetting catch tray paper transportation figure 1 & figure 2 paper is fed from the cassette assembly or the tray assembly mbf and transported through the printer to the exit along the paper paths show...

  • Page 321

    02/2000 6-89 docuprint n2025/n2825 gp 5.23 general procedures / information initial issue the figure below is a diagram that shows the gear arrangement of the oct assembly figure 3. Figure 3 oct gear arrangement the figure below is a cut-away side view of the duplex assembly that shows the drive pow...

  • Page 322

    02/2000 6-90 docuprint n2025/n2825 gp 5.23 initial issue general procedures / information the figure below is a perspective view that shows the drive power transmission through the gears of the oct assembly figure 5. Figure 5 perspective view of power transmission oct assembly main component functio...

  • Page 323

    02/2000 6-91 docuprint n2025/n2825 gp 5.23 general procedures / information initial issue figure 7 oct major components printer control the control of the printer against the oct assembly by the controller is described here. Control timing of the exit gate solenoid figure 8 the controller uses the s...

  • Page 324

    02/2000 6-92 docuprint n2025/n2825 gp 5.23 initial issue general procedures / information.

  • Page 325

    02/2000 6-93 docuprint n2025/n2825 gp 6.1, gp 6.2 general procedures / information initial issue gp 6.1 how to run a system controller test print 1. Switch the printer power on. 2. When the display indicates "ready", press the [1] or [5] key until "print menu" is displayed. 3. Press the [2] or [6] k...

  • Page 326

    02/2000 6-94 docuprint n2025/n2825 gp 6.1, gp 6.2 initial issue general procedures / information.

  • Page 327

    02/2000 6-95 docuprint n2025/n2825 gp 7.1 general procedures / information initial issue gp 7.1 supplemental tools, supplies, and hardware table 1 supplies description part number cleaning cloth (treated) 35p1538 cleaning pads 600s4372 cotton swabs 35p2162 disposable gloves 99p3082 disposable plasti...

  • Page 328

    02/2000 6-96 docuprint n2025/n2825 gp 7.1 initial issue general procedures / information.

  • Page 329

    02/2000 6-97 docuprint n2025/n2825 gp 8.1 general procedures / information initial issue gp 8.1 tag matrix all important modifications are identified by a number on the tag matrix. Classification codes a tag number may be required to identify differences between parts that cannot be inter- changed, ...

  • Page 330

    02/2000 6-98 docuprint n2025/n2825 gp 8.1 initial issue general procedures / information.

  • Page 331

    02/2000 7-1 docuprint n2025/n2825 wiring data initial issue 7 wiring data section contents............................................................................................................. 7-3 introduction ......................................................................................

  • Page 332

    02/2000 7-2 docuprint n2025/n2825 initial issue wiring data.

  • Page 333

    02/2000 7-3 docuprint n2025/n2825 section contents, introduction wiring data initial issue section contents 1. Base engine • wiring diagrams and signal information for engine • plug/jack (p/j) connector locations for engine 2. 500 sheet feeder • location of p/j connectors • wiring diagrams and signa...

  • Page 334

    02/2000 7-4 docuprint n2025/n2825 base engine initial issue wiring data base engine wiring diagrams and signal information for engine master wiring diagram figure 1 & figure 2 wiring and signal description between components organization 1. Print engine controller pwblvpsinter-lock switch and fans (...

  • Page 335

    02/2000 7-5 docuprint n2025/n2825 base engine wiring data initial issue figure 2 master wiring diagram (2 of 2) note: *1: the duplex interface pwb and the components connected to it by means of p/ j503, p/j504, and p/j505 are the components of the duplex assembly and oct. Wiring and signal descripti...

  • Page 336

    02/2000 7-6 docuprint n2025/n2825 base engine initial issue wiring data wiring diagram notations.

  • Page 337

    02/2000 7-7 docuprint n2025/n2825 base engine wiring data initial issue 1.Print engine controller pwblvpsinter-lock switch and fans figure 3 printer engine controller pwb - lvps - interlock switches and fans table 1 signal names for the print engine controller pwblvps path signal name description /f...

  • Page 338

    02/2000 7-8 docuprint n2025/n2825 base engine initial issue wiring data • 24vdc supply interruption by the interlock switch when the rear cover, top cover, oct rear cover, or the 2000 sheet feeder rear cover is open, the interlock switch is deactuated to open the 24 vdc supply circuit between the lv...

  • Page 339

    02/2000 7-9 docuprint n2025/n2825 base engine wiring data initial issue 2. Print engine controller pwbfuser assembly, fuser pwb figure 4 print engine controller pwb-fuser assembly, fuser pwb.

  • Page 340

    02/2000 7-10 docuprint n2025/n2825 base engine initial issue wiring data figure 5 fuse, thermostat, heater rod, and thermistor specifications table 3 pin numbers and voltage levels for the print engine controller pwb fuser assembly path signal name description /exit (ttl) signal from the exit sensor...

  • Page 341

    02/2000 7-11 docuprint n2025/n2825 base engine wiring data initial issue 3. Print engine controller pwblaser and print cartridge sensor assembly (print cartridge switch and ld switch) figure 6 print engine controller pwb-laser and print cartridge sensor assembly (print cartridge switch and ld switch...

  • Page 342

    02/2000 7-12 docuprint n2025/n2825 base engine initial issue wiring data • print cartridge sensor assembly function the print cartridge sensor assembly has the print cartridge switch and the ld switch mounted inside. The actuator in the print cartridge sensor assembly is depressed by the projection ...

  • Page 343

    02/2000 7-13 docuprint n2025/n2825 base engine wiring data initial issue 4. Print engine controller pwbhvpsprint cartridge (bcr and mag. Roll), btr, and detack saw figure 7 print engine controller pwb-hvps-print cartridge, btr, and detack saw table 6 signal names for the print engine controller pwbh...

  • Page 344

    02/2000 7-14 docuprint n2025/n2825 base engine initial issue wiring data note: the tr(+) (transfer voltage) and the dts (detack voltage) while transfer and detack are in progress are determined by the ntdvc (numerical transfer and detack voltage con- trol). 5. Print engine controller pwb reg. Clutch...

  • Page 345

    02/2000 7-15 docuprint n2025/n2825 base engine wiring data initial issue 6. Print engine controller pwb feed solenoid, turn clutch, no-paper sen- sor figure 9 print engine controller pwb-feed solenoid, turn clutch, no paper sensor.

  • Page 346

    02/2000 7-16 docuprint n2025/n2825 base engine initial issue wiring data table 9 signal names for the print engine controller pwb feed solenoid, turn clutch, no-paper sensor path signal name description /feed0 on(l) 24vdc feed solenoid 0 control signal. The feed solenoid 0 (feed solenoid of the tray...

  • Page 347

    02/2000 7-17 docuprint n2025/n2825 base engine wiring data initial issue 7. Print engine controller pwb low paper sensor, p/h unit, tray 1 paper size switch figure 10 print engine controller pwb-low paper sensor, p/h unit, tray1 paper size switch.

  • Page 348

    02/2000 7-18 docuprint n2025/n2825 base engine initial issue wiring data • paper size detection with size 1bit to size 4bit signals the print engine controller pwb reads the on and off states of the paper size switches through the size 1bit to size 4bit signal lines. The paper size switches are deno...

  • Page 349

    02/2000 7-19 docuprint n2025/n2825 base engine wiring data initial issue 8. Print engine controller pwb main motor figure 11 print engine controller pwb-main motor.

  • Page 350

    02/2000 7-20 docuprint n2025/n2825 base engine initial issue wiring data table 13 signal names for the print engine controller pwb lvps main motor path signal name description /mot half (ttl) control signal to switch the speed of the main motor between normal and half. Low: half speed, high: normal ...

  • Page 351

    02/2000 7-21 docuprint n2025/n2825 base engine wiring data initial issue 9. Print engine controller pwb toner sensor figure 12 print engine controller pwb-toner sensor.

  • Page 352

    02/2000 7-22 docuprint n2025/n2825 base engine initial issue wiring data table 14 signal names for the print engine controller pwb toner sensor path signal name description /no toner (ttl) signal from the toner sensor. Goes low when toner is low in the print cartridge..

  • Page 353

    02/2000 7-23 docuprint n2025/n2825 base engine wiring data initial issue 10. Print engine controller pwb duplex interface pwb full stack sensor figure 13 print engine controller pwb-duplex interface pwb-full stack sensor.

  • Page 354

    02/2000 7-24 docuprint n2025/n2825 base engine initial issue wiring data table 15 signal names for the print engine controller pwbduplex interface pwb full stack sensor path signal name description /full stack(ttl) signal from the full stack sensor. Goes low when the full stack sensor is deactuated..

  • Page 355

    02/2000 7-25 docuprint n2025/n2825 base engine wiring data initial issue 11. Controller control panel figure 14 controller-control panel.

  • Page 356

    02/2000 7-26 docuprint n2025/n2825 base engine initial issue wiring data 12. Print engine controller pwb diagnostic tool plug/jack (p/j) connector locations for engine contents 4. Plug/jack (p/j) connector locations 4.1 plug/jack (p/j) connector location table (table 16) 4.2 plug/jack (p/j) connecto...

  • Page 357

    02/2000 7-27 docuprint n2025/n2825 base engine wiring data initial issue 4. Plug/jack (p/j) connector locations 4.1 plug/jack (p/j) connector location table (table 16) table 16 plug/jack (p/j) connector locations p/j coordinate s location (note 1) harness (note 2) notes location name pl harness name...

  • Page 358

    02/2000 7-28 docuprint n2025/n2825 base engine initial issue wiring data 124 d-9 tray 1 pl 4.2 p/h unit harness assembly pl 4.2 connects tray 1 assembly (turn clutch assembly) and p/h unit harness assem- bly (print engine con- troller pwb). 125 e-9 tray 1 pl 4.2 p/h unit harness assembly pl 4.2 conn...

  • Page 359

    02/2000 7-29 docuprint n2025/n2825 base engine wiring data initial issue 181 e-34 hvps pl 9.1 hvps harness assembly 22 connects hvps and print engine controller pwb. 182 d-33 hvps pl 9.2 fuser harness assembly 10 connects hvps and fuser assembly. 183 g-8 paper transport pl 9.1 hvps harness assembly ...

  • Page 360

    02/2000 7-30 docuprint n2025/n2825 base engine initial issue wiring data 4.2 plug/jack (p/j) connector location diagrams figure 15 cn2 f-42 motor assembly pl 7.1 main motor pl 7.1 connects main drive motor controller pwb to main motor. Table 16 plug/jack (p/j) connector locations p/j coordinate s lo...

  • Page 361

    02/2000 7-31 docuprint n2025/n2825 base engine wiring data initial issue figure 16 figure 17.

  • Page 362

    02/2000 7-32 docuprint n2025/n2825 500 sheet feeder initial issue wiring data 500 sheet feeder location of p/j connectors use the p/j table below and the p/j map on the next page to locate a specific p/j connector within the feeder and cassette table 1.To find the location of a p/j: 1. Locate the p/...

  • Page 363

    02/2000 7-33 docuprint n2025/n2825 500 sheet feeder wiring data initial issue wiring diagrams and signal information contents master wiring diagram figure 1 wiring and signal information between components 20. Print engine controller pwb "feeder 2 pwb "low paper sensor, no paper sensor, tray 1 feed ...

  • Page 364

    02/2000 7-34 docuprint n2025/n2825 500 sheet feeder initial issue wiring data figure 1 master wiring diagram wiring and signal information between components 20. Print engine controller pwb feeder 2 pwb low paper sensor, no paper sen- sor, tray 1 feed solenoid, switch size, and feed motor 2 figure 2...

  • Page 365

    02/2000 7-35 docuprint n2025/n2825 500 sheet feeder wiring data initial issue figure 3 500 sheet feeder - tray 3. 20. Print engine controller pwb feeder 2 pwb ( feeder 3 pwb) low paper sensor, no paper sensor, tray 1 feed solenoid, switch size, and feed motor 2 (or 3) *: refer to the description of ...

  • Page 366

    02/2000 7-36 docuprint n2025/n2825 500 sheet feeder initial issue wiring data 20. Print engine controller pwb feeder 2 pwb ( feeder 3 pwb) low paper sensor, no paper sensor, tray 1 feed solenoid, switch size, and feed motor 2 (or 3) 20. Print engine controller pwb feeder 2 pwb ( feeder 3 pwb) low pa...

  • Page 367

    02/2000 7-37 docuprint n2025/n2825 duplex assembly wiring data initial issue duplex assembly location of p/j connectors use the p/j table below (table 1) and the p/j map (figure 1) on the next page to locate a spe- cific p/j connector within the feeder and cassette. • locate the p/j connector number...

  • Page 368

    02/2000 7-38 docuprint n2025/n2825 duplex assembly initial issue wiring data wiring diagrams and signal information contents master wiring diagram figure 2 wiring and signal information between components 30. Print engine controller pwb, duplex interface pwb, duplex pwb, duplex motor assembly, exit ...

  • Page 369

    02/2000 7-39 docuprint n2025/n2825 duplex assembly wiring data initial issue wiring and signal information between components 30. Print engine controller pwb duplex interface pwb duplex pwb duplex motor assembly, exit motor assembly and duplex sensor assembly. Figure 3.

  • Page 370

    02/2000 7-40 docuprint n2025/n2825 duplex assembly, offset catch tray initial issue wiring data 30. Print engine controller pwb duplex interface pwb duplex pwb duplex motor assembly, exit motor assembly and duplex sensor assembly offset catch tray location of p/j connectors use the p/j table below (...

  • Page 371

    02/2000 7-41 docuprint n2025/n2825 offset catch tray wiring data initial issue figure 1 map wiring diagrams and signal information contents this section contains a master wiring diagram for the optional oct assembly. The master diagram shows the interconnections of the printer, the optional oct asse...

  • Page 372

    02/2000 7-42 docuprint n2025/n2825 offset catch tray initial issue wiring data master wiring diagram figure 2 master wiring diagram wiring and signal information between components 40. Duplex interface pwb oct pwb oct motor assembly, offset motor assembly, stack full sensor, oct sensor and interlock...

  • Page 373

    02/2000 7-43 docuprint n2025/n2825 offset catch tray wiring data initial issue figure 3 wiring/signals between components 40. Duplex interface pwb oct pwb oct motor assembly, offset motor assembly, stack full sensor, oct sensor and oct rear cover interlock switch 40. Duplex interface pwb oct pwb oct...

  • Page 374

    02/2000 7-44 docuprint n2025/n2825 initial issue wiring data 2000 sheet feeder location of p/j connectors use the p/j table below and the p/j map on the next page to locate a specific p/j connector within the feeder and cassette. To find the location of a p/j: 1. Locate the p/j connector number in t...

  • Page 375

    02/2000 7-45 docuprint n2025/n2825 wiring data initial issue wiring diagrams and signal information contents this section contains a master diagram for the 2000 sheet feeder assembly. The master dia- gram shows the interconnections of the printer, the 2000 sheet feeder assembly, and the components o...

  • Page 376

    02/2000 7-46 docuprint n2025/n2825 initial issue wiring data wiring and signal information between components 50. Print engine controller pwb 2000 sheet feeder pwb motor assembly 2000 sheet feeder, motor assembly feed, drive assembly turn figure 3 wiring/signal information between components.

  • Page 377

    02/2000 7-47 docuprint n2025/n2825 wiring data initial issue 50. Print engine controller pwb 2000 sheet feeder pwb motor assembly 2000 sheet feeder, motor assembly feed, drive assembly turn figure 4 50. 2000 sheet feeder pwb no paper sensor 50. 2000 sheet feeder pwb no paper sensor table 2 signal na...

  • Page 378

    02/2000 7-48 docuprint n2025/n2825 initial issue wiring data 50. 2000 sheet feeder pwb low paper sensor figure 5 2000 sheet feeder pwb/photo sensor 50. 2000 sheet feeder pwb low paper sensor 50. 2000 sheet feeder pwb switches (a4/letter, rear cover, and cassette in) figure 6 2000 sheet feeder pwb/sw...