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Sam4s ER-420 Series Service Manual

Other manuals for ER-420 Series: Operation And Program Manual

Summary of ER-420 Series

  • Page 1

    Electronic cash register c o n t e n t s er-420 / er-420m / er-420f electronic cash register manual 1. Precaution statements 2. Product specifications 3. Installation and operation 4. Disassembly and assembly 5. Maintenance and adjustment 6. Exploded views and parts list 7. Pcb layout and parts list...

  • Page 3

    About this manual this service manual describes how to perform hardware service maintenance for the sam4s er-420 series electronic cash register. Notes notes may appear anywhere in the manual. They describe additional information about the item. Precaution symbols . Indicates a safety precaution tha...

  • Page 4

    Copyright ⓒ 2004 by shin heung precision. All right reserved. This manual may not, in whole or in part, be copied, photocopied, reproduced, translated or converted to any electronic or machine readable from without prior written permission of shin heung precision . Sam4s er-420m/f series service man...

  • Page 5: Overview of This Ecr

    Overview of this ecr this service manual provides the technical information for many individual component systems, circuits and gives an analysis of the operations performed by the circuits. If you need more technical information, please contact our service branch or r&d center. Schematics and speci...

  • Page 6: 1 Precaution Statements

    Sam4s er-420m/f series 1-1 1 precaution statements follow these safety, servicing and esd precautions to prevent damage and to protect against potential hazards such as electrical shock. 1-1 safety precautions 1. Be sure that all built-in protective devices are replaced. Restore any missing protecti...

  • Page 7

    1 precaution statements 1-2 sam4s er-420m/f series 1-2 servicing precautions warning: first read the-safety precautions-section of this manual. If some unforeseen circumstance creates a conflict between the servicing and safety precautions, always follow the safety precautions. Warning: an electroly...

  • Page 8: 2 Product Specifications

    Sam4s er-420m/f series 2-1 2 product specifications specifications are correct at the time of printing. Product specifications are subject to change without notice. See below for product specifications. 2-1 general specification item description remark processor • mitsubishi m16c/80 group m30800sfp ...

  • Page 9

    2 product specifications 2-2 sam4s er-420m/f series 2-2 appearance 2-2 a. Appearance dimensions (mm) er-420 electronic cash register 400 450 266 figure2-1 dimensions 2-2 b. Location feature er -4 20 el ec tro ni c ca sh r egis te r 1 2 3 4 6 7 5 figure2-2 location feature ① printer cover ② key board...

  • Page 10

    2 product specifications sam4s er-420m/f series 2-3 2-3 thermal printer specification 2-3 a. Printer specification item description remark model • stm-320 print method • thermal line printing total number of dots • 640 dots / line printing format dot pitch • vertical : 0.125 mm (8dots/mm) • horizont...

  • Page 11

    2 product specifications 2-4 sam4s er-420m/f series 2-3 b. Character specification item description remark character structure • 12(w) × 24(h) dots (including a horizontal) character size • 1.25 mm(w) ×3.0 mm(h) column pitch • 1.5 mm line pitch • 3.75 mm (including 6-dot line spacing) programable nu...

  • Page 12

    2 product specifications sam4s er-420m/f series 2-5 picture 1-1 printing dots and printing area note: the left and right margins may vary between 2mm and 0.5mm. The user should design the printing layout, taking this into account. 2-4 power specification item description remark input voltage & curre...

  • Page 13

    2 product specifications 2-6 sam4s er-420m/f series 2-5 interface specification 2-5 a. Rs-232c serial interface 2-5 a-(a) specification item description remark data transmission • serial synchronization • asynchronous hand shaking (flow control) • h/w : dtr / dsr • s/w : xon / xoff xon : asc code 11...

  • Page 14

    2 product specifications sam4s er-420m/f series 2-7 2-5 a-(c) rs-232c i/f cable figure2-6 rs-232c cable 2-5 a-(d) signal description pin no. Signal name signal direction function body frame gnd - frame ground 2 rxd input receive data 3 txd output transmit data 4 dtr output this signal indicates whet...

  • Page 15

    2 product specifications 2-8 sam4s er-420m/f series 2-5 b. Eklz interface 2-5 b-(a) cable connection cn9 eklz signal pin no wire color pin no signal vcc 1 red 6 vcc txd 2 yellow 3 rxd rxd 3 green 1 txd - 4 - - - gnd 5 black 7 gnd table2-13 eklz cable connection 2-5 b-(b) i/f cable 5 1 figure2-7 i/f ...

  • Page 16: 3 Installation and Operation

    Sam4s er-420m/f series 3-1 3 installation and operation 3-1 system configuration er -4 20 el ec tr on ic c as h re gi st er figure 3-1 system configuration.

  • Page 17

    3 installation and operation 3-2 sam4s er-420m/f series 3-2 installation 3-2 a. Paper roll installation 1. Open the printer cover. 2. Place a paper roll onto the concave bottom of the paper supply after the leading edge of the paper is being fed from the bottom of the roll.(figure 3-2-1) 3. Using th...

  • Page 18

    3 installation and operation sam4s er-420m/f series 3-3 3-2 b. Rs-232c serial cable installation 1. Connect the rs-232c serial cable to the rs-232c serial port on the right side of ecr. 2. Secure the serial cable with screws. 3. Connector the other end of the rs-232c serial cable to your host comput...

  • Page 19

    3 installation and operation 3-4 sam4s er-420m/f series 3-3 operation note: before using this electronic cash register (ecr) for the first time, leave it powered on in the reg mode for a at least 24 hours. This allows the ni-mh battery, which maintains the ecr’s memory while the power is off, to ful...

  • Page 20

    3 installation and operation sam4s er-420m/f series 3-5 3-3 b. Key board matrix figure3-5 key board(48key) 3-3 c. Initial clear 1. Turn off the power switch. 2. Turn the mode switch marked ‘p’ to p-mode. 3. Hold down the ‘sbtl’ key on the keyboard and turn on the power switch at the same time. Figur...

  • Page 21

    3 installation and operation 3-6 sam4s er-420m/f series 3-3 d. All clear this step insures that the cash register is cleared of any totals or programming. After this procedure, the cash register is ready for programming and operation. Warning: this is a one time procedure. Do not repeat this procedu...

  • Page 22

    3 installation and operation sam4s er-420m/f series 3-7 3-3 e. Self test 3-3 e-(a) test printer 1. Turn the mode switch to service mode position. 1. Press ‘1’, ‘0’ and ‘sbtl’ key on key board. 2. Then the printer prints the test pattern. The printing message shows some information sush as ‘tm value’...

  • Page 23

    3 installation and operation 3-8 sam4s er-420m/f series memo.

  • Page 24: 4 Disassembly And Assembly

    Sam4s er-420m/f series 4-1 4 disassembly and assembly caution : · before installation, be sure to turn off the power switch. · use gloves to protect your hand from being cut by the angle and the chassis. · connect all the cables correctly. When connecting or disconnecting the cables, be careful not ...

  • Page 25

    4 disassembly and assembly 4-2 sam4s er-420m/f series 4-2 disassembling the case lower block 4-2 a. Ass’y printer 1. Open the ass'y cover printer(a) and lift it off. (page9-1, 9-2) 2. Separate the ground wire(c-5ⓐ,ⓑ) from the ass’y case lower(e). (page9-6, 9-11) 3. Remove the two screws(c-45) from t...

  • Page 26

    Sam4s er-420m/f series 5-1 5 maintenance and adjustment 5-1 cleaning the printer head paper dust on the heating elements may lower the print quality. In this case, clean the print head as follows. After printing, the printer head can be very hot. Be careful not to touch it. Also let it cool before y...

  • Page 27

    5 maintenance and adjustment 5-2 sam4s er-420m/f series memo.

  • Page 28

    Sam4s er-420m/f series 6-1 6. Exploded views and parts list 6-1. Exploded view(er-420m) figure 6-1 total disassembly (er-420m).

  • Page 29

    6 exploded views and parts list 6-2 sam4s er-420m/f series 6-1. Exploded view(er-420f) figure 6-2 total disassembly (er-420f).

  • Page 30

    6 exploded views and parts list sam4s er-420m/f series 6-3 6-2 a. Ass’y cover-printer figure 6-3 ass’y cover-printer a. Ass’y cover-printer no. Parts no. Description / specification q`ty design-location serviceable remark a jk97-20017a mea-cover printer 1 y a-1 jk72-20087a pmo-window journal 1 y a-2...

  • Page 31

    6 exploded views and parts list 6-4 sam4s er-420m/f series 6-2 b. Ass’y case-upper(er-420m) figure 6-4 ass’y case-upper (er-420m) b. Ass’y case-upper(er-420m) no. Parts no. Description / specification q`ty design-location serviceable remark b-1 jk72-20091a pmo-window lcd: er420m 1 y b-2 jk72-40207n ...

  • Page 32

    6 exploded views and parts list sam4s er-420m/f series 6-5 6-2 b. Ass’y case-upper(er-420f) figure 9-5 ass’y case-upper (er-420f) b. Ass’y case-upper(er-420f) no. Parts no. Description / specification q`t y design-location serviceable remark b-1 jk72-20063a pmo-window display 1 y b-2 jk72-40207m pmo...

  • Page 33

    6 exploded views and parts list 6-6 sam4s er-420m/f series 6-2 c. Ass’y printer (stm-320) c c-5-1 c-5-16 c-8 c-5-4 c-5-12 c-5-9 c-5-10 c-5-11 c-5-14 c-5-13 c-5-17 c-5-22 c-5-3 c-5-5 c-5-7 c-5-8 c-5-9 c-5-11 c-5-10 c-5-12 c-5-15 c-5-14 c-5-18 c-5-24 c-5-16 c-5-19 c-5-23 c-5-21 c-5-6 c-5-2 c-6 c-7 c-8...

  • Page 34

    6 exploded views and parts list sam4s er-420m/f series 6-7 figure 6-7 lubrication points of the printer (stm-320).

  • Page 35

    6 exploded views and parts list 6-8 sam4s er-420m/f series 6-2. C. Ass’y printer (stm-320) no. Code no. Description / specification q’ty remarks serviceable c jk59-20004a unit-printer:stm-320 1 y c-1 jk72-20081a pmo-spool winding_320 1 y c-2 jk72-20093a pmo-gudie winding 1 y c-3 6003-000198 screw-ta...

  • Page 36

    6 exploded views and parts list sam4s er-420m/f series 6-9 6-2 d. Ass’y kbd(48key raised) figure 6-8 ass’y-keyboard (48 key).

  • Page 37

    6 exploded views and parts list 6-10 sam4s er-420m/f series 6-2. D. Ass’y kbd(48key raised) no. Parts no. Description / specification q`ty design-location serviceable remark d jk59-30015a unit-keyboard:er-420,english,48k,mem 1 y d-1 jk81-10945a key-cap(s): 1x1 34 y d-2 - label-key top set: er-420 1 ...

  • Page 38

    6 exploded views and parts list sam4s er-420m/f series 6-11 6-2 e. Ass’y case-lower c y y e-26 c-8 c-8 figure 6-9 ass’y case-lower.

  • Page 39

    6 exploded views and parts list 6-12 sam4s er-420m/f series 6-2. E. Ass’y case-lower no. Parts no. Description / specification q`ty design-location serviceable remark e-1 jk39-00008a pba sub-power sw 1 y e-2 6002-000174 screw-tapping: pwh,+,2,m3,l10,zpc(yel) 3 y e-3 jk39-40642a harness-if;22pin 1 y ...

  • Page 40

    6 exploded views and parts list sam4s er-420m/f series 6-13 6-2 f. Ass’y-drawer a8 a10 a9 a7 b2 b1 b11 b12 b5 b3 b4 b7 b8 b6 b9 a3 a2 a1 a. Ass'y bill-coin (4b8c) b. Ass'y tray-till b10 a4 a5 a6 c. Ass'y housing e. Ass'y bottom d. Ass'y lock e1 e5 e2 e3 e4 e7 e6 e8 d1 d2 d3 d4 d11 d6 d7 d9 d10 d5 d8...

  • Page 41

    6 exploded views and parts list 6-14 sam4s er-420m/f series f. Ass’y drawer (a) ass’y bill-coin (4b/8c, 5b/5c) no. Code no. Description / specification q`ty design-location serviceable remark jk97-20014a mea-unit bill coin: a-type, 4b8c 1 y a jk97-00407a mea-unit bill coin: a-type, 5b5c 1 y a-1 jk72...

  • Page 42

    6 exploded views and parts list sam4s er-420m/f series 6-15 (c) ass’y housing no. Code no. Description / specification q`ty design-location serviceable remark jk97-01074a mea-cover housing: a-type,basic 1 n c jk97-01074b mea-cover housing: a-type,none hole,option 1 n jk75-00026a mea-sub housing: a-t...

  • Page 43

    6 exploded views and parts list 6-16 sam4s er-420m/f series memo.

  • Page 44: 7 Pcb Layout and Parts List

    Sam4s er-420m/f series 7-1 7 pcb layout and parts list 7-1 main pcb layout.

  • Page 45

    7 pcb layout and parts list 7-2 sam4s er-420m/f series no part-no description / specification q’ty design location serviceable remarks - jk92-01264b pba main-bd:er-420,lcd,fiscal(lpp2) 1 y - 0202-000216 solder-bar:s63s-b20,s63s,350x34,sn63/pb3 1 y - 0202-001025 solder-wire flux:ks-611,-,-,-,spray 1 ...

  • Page 46

    7 pcb layout and parts list sam4s er-420m/f series 7-3 no part-no description / specification q’ty design location serviceable remarks - 3711-002002 connector-header:-,22p,2r,2mm,straight,s 1 cn3 y - 3711-002002 connector-header:-,22p,2r,2mm,straight,s 1 cn5 y er420m only - 3711-004105 wafer;box-hea...

  • Page 47

    7 pcb layout and parts list 7-4 sam4s er-420m/f series no part-no description / specification q’ty design location serviceable remarks - 2007-000300 r-chip:10kohm,5%,1/10w,da,tp,2012 1 r1,r4,r25,r30,r43,r44,r45 r47,r50,r59,r61,r64,r68 r70,r81,r82,r84,r85,r87 r97,r107,r108,r115,r119 r133 y - 2007-000...

  • Page 48

    7 pcb layout and parts list sam4s er-420m/f series 7-5 7-2 stm-320 printer pcb layout no part-no description / specification q’ty design location serviceable remarks jk92-01265a pba sub-connection board:stm-310/320 1 y 2401-000132 c-al:1000uf,35v,20%,shl35vb1000,12.5x20m 1 c1 y 3711-004105 wafer;box...

  • Page 49

    7 pcb layout and parts list 7-6 sam4s er-420m/f series 7-3 power switch pcb layout no part-no description / specification q’ty design location serviceable remark s - 3711-000190 connector-header:1wall,2p,1r,7.92mm,stra 1 cn3 y - 3711-000829 connector-header:box,2p,1r,6.2mm,straigh 2 cn1, cn2 y - jk4...

  • Page 50

    7 pcb layout and parts list sam4s er-420m/f series 7-7 7-4 display layout 7-4 a. Er-420f front display (vfd 10digit) no part-no description / specification q’ty design location serviceable remarks - 3711-004111 wafer;box-header,1r,8p,2.5mm,angle 1 cn1 y - 3711-002002 connector-header:-,22p,2r,2mm,st...

  • Page 51

    7 pcb layout and parts list 7-8 sam4s er-420m/f series 7-4 display layout 7-4 b. Er-420f rear display (vfd 10digit) no part-no description / specification q’ty design location serviceable remarks - jk92-01231a pba sub-turret:er-5100/5200,std 1 rear display assy y - jk39-40002a cbf harness:er-220n,-,...

  • Page 52

    7 pcb layout and parts list sam4s er-420m/f series 7-9 7-5 fiscal layout (memory size = 512kbits) no part-no description / specification q’ty design location serviceable remark s - jk92-00132a pba sub-fiscal b/d:er-5240f,512kbit 1 512kbits assy y - jk39-40305b cbf harness:,-,ul 1007,120,wht/blu/red,...

  • Page 53

    7 pcb layout and parts list 7-10 sam4s er-420m/f series 7-5 fiscal layout (memory size = 2mbits) no part-no description / specification q’ty design location serviceable remark s - jk92-00132c pba sub-fiscal b/d;2mbits 1 2mbits assy y - 1102-000136 ic-eprom:27c020,256kx8bit,dip,32p,600mi 1 u1 y - 040...

  • Page 54: 8 Troubleshooting

    Sam4s er-420m/f series 8-1 8 troubleshooting 8-1. Power problem end power problem power out ok? On trans y n 1. Check the power cable 2. Check the power s/w pcb. 3. Check the power transformer. Power vdisp (+30v) ok? Power vdrv (+30v) ok? Y 1. Check the fuse (fu1) on main pba 2. Check the bridge dio...

  • Page 55

    8 troubleshooting 8-2 sam4s er-420m/f series 8-2 system problem end system problem reset signal ok? Y n 1. Check the ic m51953b(u25) 2. Check the 74hc14(u16). 3. Check the rst pattern on pcb. Power fail signal ok? Program ok? Y 1. Check the ncs, nrd signal of eprom 2. Check the addr/data line patter...

  • Page 56

    8 troubleshooting sam4s er-420m/f series 8-3 8-3 vfd display problem end vfd problem control signal ok? Y n 1. Check the clk signal (cpu p9.5) (approx. 1mhz) 2. Check the data signal (cpu p9.6) 3. Check the latch signal (cpu p9.7) 4. Check the harness. Disconnect ok? Power vdisp, vcc ok? Y 1. Refer ...

  • Page 57

    8 troubleshooting 8-4 sam4s er-420m/f series end thermal printer problem print ok? Y n 1. Check the control signal on cpu 2. Check the harness. 3. Check the related circuit and pattern. Power vcc v ph ok? Y 1. Refer to the power problem. 2. Check the harness. N sensor ok? 1. Check the related circui...

  • Page 58

    8 troubleshooting sam4s er-420m/f series 8-5 end key board problem key input failure ? Y n 1. Check the key scan part 74hc138(u27) 2. Check the key return part 74hct541(u2) 3. Check the related circuit and pattern 4. Check & change key board assy 5. Check the kbd connector on pba specific key failur...

  • Page 59

    8 troubleshooting 8-6 sam4s er-420m/f series drawer problem drawer open failure ? Y n 1. Check the drawer connector & harness. 2. Check the related circuit & component ksd288 (q1) mmbt2222a(q2) on main pba. 3. Check the solenoid in the drawer. Compulsory failure? 1. Check the compulsory harness & co...

  • Page 60

    8 troubleshooting sam4s er-420m/f series 8-7 8-7 rs-232c serial communication problem end rs-232c problem loop back failure? Y n 1. Perform the “self test” in the s-mode using the loop back test connector. 2. Check the connection of the rs-232c connector and loop back connector. 3. Check the txd,rxd...

  • Page 61

    8 troubleshooting 8-8 sam4s er-420m/f series memo.

  • Page 62: 9 Block Diagram

    Sam4s er-420m/f series 9-1 9 block diagram 9-1 er-420m cpu m30800sfp decoder 74hc138 rom 4/8mbit a[0:18] nrd/nwr sram 1mbits sram 4mbits sram 1mbits d[0:7] ncs3 ncs(ram) sscg fs781 14.7456mhz pow fail ka393 drawer driver rtc rs5c372a 32.768khz decoder 74hc138 ncs2 buzzer driver buffer 74hc245 ncs(lc...

  • Page 63

    9 block diagram 9-2 sam4s er-420m/f series 9-2 er-420f cpu m30800sfp decoder 74hc138 rom 4/8mbit a[0:18] nrd/nwr sram 1mbits sram 4mbits sram 1mbits d[0:7] ncs3 ncs(ram) sscg fs781 14.7456mhz pow fail ka393 drawer driver rtc rs5c372a 32.768khz decoder 74hc138 ncs2 buzzer driver ncs(lcd) 0.00 clk/dat...

  • Page 64

    9 block diagram sam4s er-420m/f series 9-3 9-3 power block diagram this system is operated under 120vac or 230vac. All data is saved by the battery when the main power is turned off. The power circuit supplies the five different dc voltage sources and one ac voltage source. Figure 9-1 power block di...

  • Page 65

    9 block diagram 9-4 sam4s er-420m/f series memo.

  • Page 66: 10 Wiring Diagram

    Sam4s er-420m/f series 10-1 10 wiring diagram 10-1 wiring pin connection cn7 = main to printer cn6=display (vfd) cn10 = main to fiscal pba i/f no signal name no signal name no. Signal name 1 vcc 1 sen_dispdiscon 1 fa17 2 gnd 2 vcc 2 fa16 3 p/end sensor out(receipt) 3 display_clk 3 fa7 4 p/end sensor...

  • Page 67

    10 wiring diagram 10-2 sam4s er-420m/f series memo.

  • Page 68: 11 Schematic Diagrams

    Sam4s er-420m/f series 11-1 11 schematic diagrams [ schematics sheet content ] 1. Main pcb schematics. 1) cpu block ---------------------------------------------------------- 11-2 2) memory, rtc, decoder block --------------------------------- 11-3 3) power fail, buzzer, display block --------------...

  • Page 69

    11-2 sam4s er-420m/f series 11-1 cpu part 4 dat e of 4 3 2 1 ab siz e 3 2 1 b drawn by sheet c title : d c d file name a3 rev shin heung precision co., ltd. 4 dat e of 4 3 2 1 ab siz e 3 2 1 b drawn by sheet c title : d c d file name a3 rev shin heung precision co., ltd. A( 8) a( 9) a( 6) a( 7) a( 5...

  • Page 70

    Sam4s er-420m/f series 11-3 11-2 memory part 4 dat e of 4 3 2 1 ab siz e 3 2 1 b drawn by sheet c title : d c d file name a3 rev shin heung precision co., ltd. 4 dat e of 4 3 2 1 ab siz e 3 2 1 b drawn by sheet c title : d c d file name a3 rev shin heung precision co., ltd. A( 1) a( 2) a( 4) a( 5) a...

  • Page 71

    11-4 sam4s er-420m/f series 11-3 display, buzzer, fail part 4 dat e of 4 3 2 1 ab siz e 3 2 1 b drawn by sheet c title : d c d file name a3 rev shin heung precision co., ltd. 4 dat e of 4 3 2 1 ab siz e 3 2 1 b drawn by sheet c title : d c d file name a3 rev shin heung precision co., ltd. 3 volt_ono...

  • Page 72

    Sam4s er-420m/f series 11-5 11-4 interface part 4 da te of 4 3 2 1 ab si ze 3 2 1 b dr aw n by s heet c ti tl e : d c d fi le na m e a3 re v sh in h eung pr ec isi on co ., lt d. 4 da te of 4 3 2 1 ab si ze 3 2 1 b dr aw n by s heet c ti tl e : d c d fi le na m e a3 re v sh in h eung pr ec isi on co...

  • Page 73

    11-6 sam4s er-420m/f series 11-5 key scan part 4 dat e of 4 3 2 1 ab siz e 3 2 1 b drawn by sheet c title : d c d file name a3 rev shin heung precision co., ltd. 4 dat e of 4 3 2 1 ab siz e 3 2 1 b drawn by sheet c title : d c d file name a3 rev shin heung precision co., ltd. 5 vcc r122 4.7k r123 4....

  • Page 74

    Sam4s er-420m/f series 11-7 11-6 printer part 4 dat e of 4 3 2 1 ab siz e 3 2 1 b drawn by sheet c title : d c d file name a3 rev shin heung precision co., ltd. 4 dat e of 4 3 2 1 ab siz e 3 2 1 b drawn by sheet c title : d c d file name a3 rev shin heung precision co., ltd. L l in1 h0 % vcc 6 h vcc...

  • Page 75

    11-8 sam4s er-420m/f series 11-7 fiscal part 4 dat e of 4 3 2 1 ab siz e 3 2 1 b drawn by sheet c title : d c d file name a3 rev shin heung precision co., ltd. 4 dat e of 4 3 2 1 ab siz e 3 2 1 b drawn by sheet c title : d c d file name a3 rev shin heung precision co., ltd. T8 7 t7 d(0:7) fd(0 ) fd(...

  • Page 76

    Sam4s er-420m/f series 11-9 11-8 power part 4 dat e of 4 3 2 1 ab siz e 3 2 1 b drawn by sheet c title : d c d file name a3 rev shin heung precision co., ltd. 4 dat e of 4 3 2 1 ab siz e 3 2 1 b drawn by sheet c title : d c d file name a3 rev shin heung precision co., ltd. 8 +30v m4 d4 m4 d2 er420 m...

  • Page 77

    11-10 sam4s er-420m/f series 11-9 power s/w pcb 4 dat e of 4 3 2 1 ab siz e 3 2 1 b drawn by sheet c title : d c d file name a3 rev shin heung precision co., ltd. 4 dat e of 4 3 2 1 ab siz e 3 2 1 b drawn by sheet c title : d c d file name a3 rev shin heung precision co., ltd. 2 1 1 1 red blue blue ...

  • Page 78

    Sam4s er-420m/f series 11-11 11-10 front display pcb (er-420f) 4 da te of 4 3 2 1 ab si ze 3 2 1 b dr aw n by s heet c ti tl e : d c d fi le na m e a3 re v sh in h eung pr ec isi on co ., lt d. E p6 f c p5 g p4 p2 p1 p8 dp p9 g9 g6 g7 g3 g4 g1 g1 g2 p 1_a p 2_b vf p 6_e bl k g3 g6 g4 g5 g9 g7 g8 p 3...

  • Page 79

    11-12 sam4s er-420m/f series 11-11 rear display pcb (er-420f) 4 date of 4 3 2 1 ab si ze 3 2 1 b draw n by sheet c title : d c d file nam e a3 rev shin heung precision co., ltd. H p1 0 d p7 g p3 a dp p2 b p9 1 e p6 p4 c blk p6_e vf1 p2_b p1_a p1_a p3_f p2_b p5_c p7_d p8_d p p4_g p6_e p5_c g2 sen_dis...

  • Page 80

    Sam4s er-420m/f series 11-13 11-12 rear display pcb (er-420m) 4 da te of 4 3 2 1 ab si ze 3 2 1 b dr aw n by s heet c ti tl e : d c d fi le na m e a3 re v sh in h eung pr ec isi on co ., lt d. E p6 f c p5 g p4 p2 p1 p8 dp p9 g9 g2 g1 g3 g5 g4 g6 g8 g7 g9 g6 g7 g3 g4 g1 1 a co m p1_a p3_f p4_g p6_e p...

  • Page 81

    11-14 sam4s er-420m/f series 11-13 fiscal pcb 4 da te of 4 3 2 1 ab si ze 3 2 1 b dr aw n by s heet c ti tl e : d c d fi le na m e a3 re v sh in h eung pr ec isi on co ., lt d. 1 r8 r1 1 a1 0 a9 a1 3 a1 2 a1 5 a0 a3 a2 /ce a4 a7 a6 d1 d7 d2 d5 d4 a1 5 a1 4 a1 2 a1 1 a9 a8 a6 a5 a3 a2 a0 a1 7 ne w fi...

  • Page 82

    Sam4s er-420m/f series 11-15 11-14 stm-320 printer pcb 4 dat e of 4 3 2 1 ab siz e 3 2 1 b drawn by s heet c title : d c d file name a3 rev shin heung precision co., ltd. 1 2 vcc [´` ¶ ] 15 16 14 12 13 9 10 11 6 7 8 3 4 5 22p 1 2 gnd gnd --- scl k gnd gnd vcc 1 vph vcc vcc 12 r l f m ot ou t _ b r l...

  • Page 83

    11-16 sam4s er-420m/f series 11-15 serial i/f pcb 4 da te of 4 3 2 1 ab si ze 3 2 1 b dr aw n by s heet c ti tl e : d c d fi le na m e a3 re v sh in h eung pr ec isi on co ., lt d. Gn d gn d rx d1 rx d1 dt r1 dt r1 gn d gn d rx d0 rx d0 dt r0 dt r0 1 ds r1 ds r1 tx d 1 tx d 1 ds r0 ds r0 tx d 0 tx d...

  • Page 84: Update Log

    Sam4s er-420m/f series update log application date page part # notes (cause & solution) s/bulletin use this page to record any special servicing information such as service bulletins or supplements. When possible, record changes to code numbers directly on the actual parts list. Always records servi...

  • Page 86

    ⓒ shin heung precision. May 2004 printed in korea v1.0 code no. : jk68-60958a.