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Oki OKIPAGE6w Troubleshooting Manual

Manual is about: Users' Guide for the OKIPAGE6w

Summary of OKIPAGE6w

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    All specifications are subject to change without notice. Okipage6 w led page printer troubleshooting manual with component parts list (oel).

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    Contents 1. Outline ..................................................................................................... 1 2. Tools ........................................................................................................ 1 3. Circuit description ........................................

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    - 1 - 1. Outline this manual has been written to provide guidance for troubleshooting of the okipage6w printer (primarily for its printed circuit boards), on an assumption that the reader is knowledgeable of the printer. Read the maintenance manual for this printer if necessary. Note: 1. High voltag...

  • Page 4

    - 2 - 3. Circuit description 3.1 outline the circuit of okipage6w consists of a main control board, a main high voltage power supply board,a syb-high voltage power supply board and a power supply unit. The block diagram is shown in fig. 3-1. The main control board controls the reception and transmis...

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    - 3 - figure 3-1 okipage6w block diagram dram 512kb cpu (nx8) pcb h63-only dram 1m x 4 serial i/f parallel i/f dram bus (data : 4) (address : 11) internal mask rom 62kb high voltage power unit p6l high voltage power unit p2h eeprom 1kb motor driver mtd2005f osc 16mhz hc125 rst cn10 cn1 id unit cn7 m...

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    - 4 - 3.2 cpu and memory (1) cpu (msm65917) cpu core nx-8 cpu clock 16 mhz data bus width external 8 bits, internal 8 bits (2) program rom rom capacity 64k-bytes rom type 512 kbits (64k x 8 bits) access time 90 nsec (3) resident ram ram capacity 512k bytes (1m x 4 bits d-ram one piece) ram type 4m b...

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    - 5 - figure 3-2 block diagram of cpu & memory in okipage6w cpu ic 6 ale rdn rocs da10 dwr cas ras0 ras1 ras2 ls373 ic3 ic2 eprom (64k x 8 bits) ic11 dram (1m x 4 bits) ad00 to ad07 a00 to a07 a08 to a15 dd00 to dd03 da00 to da09 main control board.

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    - 6 - 3.3 reset control when power is turned on, rst-n signal is generated by ic5. Power off power on +5v rst-n cpu 63 1 2 3 ic5 ic6 +5v +5v rstn.

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    - 7 - instruction start bit operation address data code read (read) 1 10 a5 to a0 write enabled (wen) 1 00 11xxxx write (write) 1 01 a5 to a0 d15 to d0 write all address (wral) 1 00 01xxxx d15 to d0 write disabled (wds) 1 00 00xxxx erase 1 11 a5 to a0 chip erasable (eral) 1 00 10xxxx 3.4 eeprom cont...

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    - 8 - 3.5 parallel interface parallel data is received from a host system via parallel interface which is compliant to the ieee1284 specification. Compatible mode the cpu sets a busy-p signal to on at the same time when it reads the parallel data (pdata1- p to pdata 8-p) from the parallel port at th...

  • Page 11

    - 9 - 3.6 led lamp control there is an led lamp on the high voltage power supply board which is connected to and controled by the cpu on the main control board. The light from the led lamp can be seen on the lens cover through the led lens. Cpu main control board high voltage power supply board cn1 ...

  • Page 12

    - 10 - 3.7 led head control an led correcting head, which is capable of correcting the illumination of the led for each dot, is being used in this printer. Led illumination correction function of 16 steps is carried out by using an eeprom which is installed in the lsi that maintains the led illumina...

  • Page 13

    - 11 - vld-p vstb4-n vstb3-n vstb2-n vstb1-n vdt-p vdt-p vclk-p vclk-p vdt-p 0.78 msec 8 bits 8 bits 4992 bits 0.3 µ s page synchronous signal* line synchronous signal* * cpu internal signal.

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    - 12 - 3.8 motor and clutch control the electromagnetic clutch is driven by a control signal from the cpu and the drive circuit shown below. The main motor is driven by the control signals from the cpu and the driver ic. (1) main motor m cpu dmp1 dmon cn7 +5v +5v +5v +5v 23 22 28 15 10 21 20 tab 5 +...

  • Page 15

    - 13 - (2) motor drive control time t0 to t3 determines the motor speed, while the phase different direction between phase signals dmph1-p and dmph2-p determines the rotation direction. Dmon-p signal control a motor coil current. According to the polarity of the phase signal, the coil current flow a...

  • Page 16

    - 14 - 3.9 fuser temperature control the temperature change in a heat controller is converted into the electric potential temp corresponding to the change in the resistance value of a thermistor, and the resultant potential is fed back to the control circuit. The cpu performs on/off control of the h...

  • Page 17

    - 15 - flowchart of thermistor circuit check heater off short check timer(t16)set temperature > tn thermistor error check timer (t2) within time thermistor disconnection check timer (t35) within time start to constant temperature control end heater on yes yes yes yes yes no no no no no no no yes yes...

  • Page 18

    - 16 - temperature controlled temperature t heater on off time temperature table thermcmp-n o z heater control mode normal operation fuser error check t 135˚c: 140˚c: 145˚c: 150˚c: 155˚c: paper thickness light medium light medium medium heavy heavy.

  • Page 19

    - 17 - 3.10 sensor control the cpu supervises the state of each sensor every 40 ms. Off tnrsns-n cn1 cn1 psin-n psout-n wrsns-n cpu +5v ps1 ps2 ps3 ps4 on transparent shield sensor signal 47 44 46 48 +5v +5v +5v +5v main control board high voltage power supply board.

  • Page 20

    - 18 - 3.11 cover open when the cover is opened, a cover open microswitch is opened. This makes a cvopn-n signal low, thereby the cpu detects that cover is open. Furthermore, opening the cover stops applying a +5v power to the high voltage power supply part, resulting in stopping all high voltage ou...

  • Page 21

    - 19 - 3.12 power supply part (1) power supply unit an ac power from an inlet is input to switching reg. Part .Ac power is converted to a +26 vdc output and +5 vdc output. (2) high voltage power supply board the +5 vdc power supplied to the high voltage power supply part via the cover open microswit...

  • Page 22

    - 20 - control signals and high voltage outputs control signal name level function tr1pwm h/l (pwm) l h/l(pwm) l h/l(pwm) l h l h l h/l(pwm) l h/l(pwm) l h/l(pwm) l makes the part put out a power to tr. Makes the part put out a -750v power to tr. Makes the part put out a -1300v power to ch. Makes th...

  • Page 23

    - 21 - 4. Troubleshooting 4.1 troubleshooting table (a) high voltage power supply board note: a malfunction of the power supply is not repaired by an agency. The abnormality to be treated here is that of sensors only. Failure pc display message flowchart no. A paper input jams occur frequently. P a ...

  • Page 24

    - 22 - (b) main control board failure pc display message flowchart no. Initialization error and not restored b - 1 program rom error b - 2 resident ram error b - 3 eeprom error b - 4 fuser error b - 5 thermistor open error b - 5 p r o g r a m r o m c h e c k e r r o r r e s i d e n t r a m c h e c k...

  • Page 25

    - 23 - 4.2 troubleshooting flowchart a-1 paper input jams occur frequently. • is ps4 (write sensor ) operating normally? • no replace ps4. ▼ • yes is pin1 of cn8 in main control board operating normally? • no replace q4 or q5 in main control board. ▼ • yes failure of ic6 in main control board. A-2 a...

  • Page 26

    - 24 - a-6 the message “cover open” remains displayed on the pc display. • is cvsw (cover open switch) operating normally? • no replace cvsw. ▼ • yes failure of ic6 in main control board. A-7 the message “tonerlow” remains displayed on the pc display. • is ps1 (toner sensor) operating normally? • no...

  • Page 27

    - 25 - b-1 initialization error and not restored • is the 16-mhz clock signal being put out to pin 3 of ocs1? • no replace osc1. T • yes failure of ic6 b-2 program rom error • replace ic6) b-3 resident ram error • are negative pulses being put out to pin 4 , 23 (ras0-n , csa-n) of ic11? • no failure...

  • Page 28

    - 26 - on-line off-line busy-p low high b-7 data sent through the parallel i/f cannot be received. • is the signal at pin 11 (busy-p) of cn4 being at low level? • no is the signal at pin 13 (busy-p) of ic7 (74ls07) changed as shown below, at data reception? • no failure of ic6 ▼ • yes replace ic7 (7...

  • Page 29

    - 27 - 5. Circuit diagram figure 5-8 ~ 5-13 main control pcb (huk) circuit diagram (rev.1) figure 5-14 high voltage power supply pcb (p2h-) circuit diagram (rev.2) figure 5-15 high voltage power supply pcb (p6l-) circuit diagram (rev.2).

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  • Page 36

    1 2 34 56 78 9 x y 1 a b c d e f g h a b c d e f g 23 4 5 6 7 8 9 x y - 34 - figure 5-14 high voltage power supply pcb (p2h-1/1) circuit diagram rev.3.

  • Page 37

    1 2 34 56 78 9 x y 1 a b c d e f g h a b c d e f g 23 4 5 6 7 8 9 x y - 35 - figure 5-15 high voltage power supply pcb (p6l-1/1) circuit diagram rev.3.

  • Page 38: Component Parts List

    - 36 - component parts list.

  • Page 39

    - 37 - 6.1 huk printed circuit board rev.1 (00096101ya).

  • Page 40

    Huk printed circuit board (00096101 ya – 1/3) ref. No. Symbol type/name part no. Qty. Remarks 1 2 1 00096099 pcb–huk 1 3 4 d501, d503 ss100ma80vacp 611a0000n0001 2 d–signal –c 5 d502 rd3 3m–b2 613a0233m0062b 1 d–zener –c 6 7 r71 cr/rk73h/erj/mcrf–102 3235003f0102 1 res–met rn –c 8 r76 cr/rk73h/erj/m...

  • Page 41

    Huk printed circuit board (00096101 ya – 2/3) ref. No. Symbol type/name part no. Qty. Remarks 27 r23, r24, r27- cr/rk73k/erj/mcrj332 3235003j0332 17 r38, r41, r44, res–met rn –c r45 28 r73 cr/rk73k/erj/mcrj432 3235003j0432 1 res–met rn –c 29 r513-r516 cr/rk73k/erj/mcrj472 3235003j0472 4 res–met rn –...

  • Page 42

    Huk printed circuit board (00096101 ya – 3/3) ref. No. Symbol type/name part no. Qty. Remarks 514400jp–60 51 ic11 memory–mosdram–s 8020003n2603 1 93c46ldp–nw 52 ic4 mernory–moseepr– 8160303m0000 1 ml65918–015ga 53 ic6 ck–mos (rom) –f 8530194n0003 1 54 55 emi short wire (u type) kh–31036–50 1 56 57 5...

  • Page 43

    - 41 - 6.2 p2h printed circuit board rev.3 (40607401ya-1/2) d84 d58 d56 d61 d60 d52 d67 d69 d68 d71 d76 ext d59 d55 c240 r124 led c237 c110 d63 tr d62 q15 d72 d87 r48 d65 d66 d74 d82 d85 d57 d51 r233 r47 r116 r121 c105 c103 c104 c241 c106 c108 c107 c118 c251 c310 r238 c311 c113 c300 q16 c101 c102 j2...

  • Page 44

    Ref. Symbol type/name part no. Q'ty remarks no. - 42 - 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 d60, d61, d68, d69 d63,d67, d72, d74 d51, d55-d59, d62, d71, d84 d52 d65,d66 d76 d82 d87 d85 r234 r47, r48 r102, r116, r121 r103, r123 r118 r122, r124, r229 r105 r104 1s953/ 1s2075k/ 1s2473 d-signal -...

  • Page 45

    Ref. Symbol type/name part no. Q'ty remarks no. - 43 - 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 r235 r228, r233 r100 r115 r114, r236 r237 r238 c105, c107, c119, c240, c241 c113, c114, c117 c112 c101, c102, c106 c103, c104,c108,c110, c111, c115,c237,c251, c300, c301, c311 c116 c118 c302, c3...

  • Page 46

    Ref. Symbol type/name part no. Q'ty remarks no. - 44 - 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 q11, q13 q12 q21-q23 q15-q17 q10 l10 t2-t4 ps1-ps4 cvsw led cn1 cn2 bcr1am-12/ mac97-008 thy-bi/ dir - cr04am-12 thy-gate - 2sc1815-y tr-npn/ h-freq - 2sc2235-y tr-npn/ h-freq - 2sc2752 tr-np...

  • Page 47

    - 45- ref. Symbol type/name part no. Q'ty remarks no. 54 55 56 57 58 59 60 j1, j2, j40 j3, j4, j7-j12 j13-j21, j23-j27, j29- j36 j22 short wire short wire short wire short wire ta-0.6 ta-0.6 ta-0.6 ta-0.6 3 8 22 1 p2h printed circuit board rev. 3 (40607401ya-2/2-4/4).

  • Page 48

    - 46 - t2 t1 c5 q2 s1 q1 r4 r3 c3 d4 d7 d6 d5 fg c4 d1 d3 c2 r2 c1 cn2 d9 cn1 d8 r6 r5 c6 1 2 1 4 5 6 1 1 4 5 6 5 6 p6l printed circuit board rev.3 (40605601ya-1/2).

  • Page 49

    Ref. Symbol type/name part no. Q'ty remarks no. - 47 - p6l printed circuit board rev. 3 (40605601ya-2/2-1/2) d1,d8 d2,d3,d9 d4 d5~d7 r1,r4~r6 r2 r3 c1,c4 c2,c3,c5 c6 s1 q1,q2 t1,t2 eu02a/rl105f-f d-rectifying -q or-dhm/esja/shv-06 erzv05d391 semico-vari - erz/jvr-05n471 semico-vari - rd16u/vtj5.1k Ω...

  • Page 50

    Ref. Symbol type/name part no. Q'ty remarks no. - 48 - 19 20 21 23 24 cn1 cn2 06fe-st-vk-n connector-pcb - rt-01t-1.0b connector-pcb - 2244101p0060 2247000p0001 1 1 p6l printed circuit board rev. 3 (40605601ya-2/2-2/2).

  • Page 51

    Oki data corporation 4-11-22, shibaura, minato-ku, tokyo 108-8551, japan tel: (03) 5445-6162 fax: (03) 5445-6189.