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Sam4s ER-250RF Service Manual

Summary of ER-250RF

  • Page 1

    Electronic cash register c o n t e n t s electronic cash register manual 1. Precaution statements 2. Product specifications 3. Installation and operation 4. Disassembly and assembly 5. Alignment and adjustment 6. Troubleshooting 7. Exploded views and parts list 8. Block diagram 9. Pcb parts list 10....

  • Page 2

    About this manual this service manual describes how to perform hardware service maintenance for the sam4s er-350 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 3

    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-350m/f series service man...

  • Page 4: 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 5: 1 Precaution Statements

    Sam4s er-350 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 protective ...

  • Page 6

    1 precaution statements 1-2 sam4s er-350 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 electrolytic...

  • Page 7: 2 Product Specifications

    Sam4s er-350 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 specifications 2-1-1 general specification item description remark ac power source ac 12...

  • Page 8

    2. Product specifications 2-2 sam4s er-350 series 2-1 general specifications 2-1-2 printer specifications item description remark model erp-200n print method serial impact, dot matrix type print direction bi-directional print speed 2.6 lines per second print format dot interval print font printing c...

  • Page 9

    Product specifications sam4s er-350 series 2-3 2-2 appearance 2-2-1 appearance dimensions (mm) figure2-1 dimensions 2-2-2 feature locations figure2-2 feature locations ① printer cover ② impact dot printer ③ keyboard ④ drawer ⑤ drawer lock key ⑥ mode switch ⑦ rs-232 serial i/f connector ⑧ operator di...

  • Page 10

    2-4 sam4s er-350 series 2-3 communication interfaces 2-3-1 serial interfaces, pin descriptions computer (9-pin, female) ecr (9-pin, male) signal pin pin signal rxd 2 3 txd txd 3 2 rxd s.G. 5 5 s.G. Dtr 4 dtr frame ground frame frame frame ground table2-3 serial interface cable pin description 2-3-2 ...

  • Page 11: 3 Installation and Operation

    Sam4s er-350 series 3-1 3 installation and operation 3-1 system configuration 3-1-1 interface installation figure 3-1. Interface configuration figure 3-2. Cable for serial port.

  • Page 12

    3. Installation and operation 3-2 sam4s er-350 series 3-1 system configuration 3-1-1 interface installation figure 3-3. Interface board installation 1. Disconnect the ecr from the external power outlet. 2. Lift off the printer cover(a).(page7-1) 3. Remove the two screws on upper case and lift it up(...

  • Page 13

    3. Installation and operation sam4s er-350 series 3-3 3-1 system configuration 3-1-3 drawer installation 1. Position the lower case on top of the drawer as shown in figure 3-5. 2. Tighten the screw that secures the drawer and lower case together. Refer to the exploded diagram for other parts of the ...

  • Page 14

    3. Installation and operation 3-4 sam4s er-350 series 3-2 receipt paper insertion 1. Using a new roll of paper, unroll the paper and cut the end as shown in figure 3-7. 2. Place rolled paper in the holder. Insert the folded paper into the paper slot and through the paper sensor. 3. Press the feed ke...

  • Page 15

    Installation and operation sam4s er-350 series 3-5 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-cad battery, which maintains the ecr ’s memory while the power is off, to fully c...

  • Page 16

    3. Installation and operation 3-6 sam4s er-350 series 3-3 operation 3-3-2 initial clear the initial clear procedure clears keyboard lock-ups and clears most error conditions. This procedure finishes the current transaction / operation and clears the temporary memory buffers. An initial clear does no...

  • Page 17

    3 installation and operation sam4s er-350 series 3-7 3-3 operation 3-3-3 service mode diagnostics(continued) 3-3-3-(d) mode key test procedure 1. Press the 3 key 4 times. Then press the charge key. Rotate the mode key from p mode vd mode. 2. Position to show on the display each mode’s code. 3. Press...

  • Page 18

    3. Installation and operation 3-8 sam4s er-350 series memo.

  • Page 19: 4 Disassembly And Assembly

    Sam4s er-350 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 to ...

  • Page 20

    4 disassembly and assembly 4-2 sam4s er-350 series 4-1 disassembling the case upper block 4-1-2 erp-200n printer disassembling m+ m- motor solenoid s- s+ figure 4-3 4. Separate the fpc of head from the connector on the printer pcb.(figure4-3) 5. Separate the motor wire and solenoid wire under the pr...

  • Page 21

    4 disassembly and assembly sam4s er-350 series 4-3 4-1 disassembling the case upper block 4-1-2 erp-200n printer disassembling rf holder gear rf bever-1 gear rf gear 2nd reduction re(2.5) re(2.5) gear 1st reduction figure 4-5 separating ribbon feed block 11.Disassemble the gear 1 st reduction. The g...

  • Page 22

    4 disassembly and assembly 4-4 sam4s er-350 series 4-1 disassembling the case upper block 4-1-2 erp-200n printer disassembling re(2.5) poly bearing-2 shaft head guide ad.Lever shaft carriage a c figure 4-7. Separating head feed block-1 16. Disassemble the e-ring (r2.5) and remove the shaft carriage ...

  • Page 23

    4 disassembly and assembly sam4s er-350 series 4-5 4-1 disassembling the case upper block 4-1-2 erp-200n printer disassembling re(2.5) shaft roller spring-roller b gear roller-1 a a figure 4-9. Separating paper feed block-2 21. Remove gear roller-1 from the rubber roller.(figure4-9) 22. Remove gear ...

  • Page 24

    4 disassembly and assembly 4-6 sam4s er-350 series 4-2 reassembling 4-2-1 erp-200 printer reassembling when you reassemble the printer do the reverse sequence of the disassembling procedure. 4-2-2 upper case reassembling 1. Position upper case so that connectors are within reach of main pcb. Replace...

  • Page 25

    Sam4s er-350 series 5-1 5 alignments and adjustments this chapter describes the methods for aligning and adjusting components in this ecr. 5-1 printer adjustments 5-1-1 head gap adjustment side frame l side frame r platen 0.4~0.55mm dot head unit figure 5-1 head gap adjustment 1. Remove the ad. Leve...

  • Page 26

    5 alignments and adjustments 5-2 sam4s er-350 series memo.

  • Page 27: 6 Troubleshooting

    Sam4s er-350 series 6-1 6 troubleshooting this chapter describes the methods for determining the source of malfunctions in this ecr. 6-1 keyboard problems 1. Check fpc of keyboard. 2. Check mode key lock. 3. Check keyboard connector and mode key connector. 4. Check all voltage stares. 5. Check /chan...

  • Page 28

    6. Troubleshooting 6-2 sam4s er-350 series 6-4 drawer failure 1. Check drawer solenoid and harness. (both ecr side and drawer side) 2. Check circuit related to drawer circuit. (ic6, d4) 6-5 clock failure 1. Check ic13, x1 6-6 buzzer failure 1. Check circuit related to buzzer. (cpu, buzzer, q3) 6-7 p...

  • Page 29

    7. Exploded views and parts list sam4s er-350 series 7-1 7 exploded views and parts list 7-1 assembly exploded view b. Ass'y case-upper c. Ass'y-printer d. Ass'y-kbd e. Ass'y case-lower f. Ass'y-drawer a. Ass'y cover-printer figure7-1 assembly exploded view.

  • Page 30

    7. Exploded views and parts list 7-2 sam4s er-350 series 7-2 cover printer assembly a-1 a-2 figure7-2 cover printer assembly no parts-no. Description/specification q'ty design-location serviceable remark jk97-01060b mea-window journal 1 y jk70-00056a ipr-cutter paper;sus-304,t0.3 1 n a-1 jk72-40204a...

  • Page 31

    7. Exploded views and parts list sam4s er-350 series 7-3 7-3 printer assembly c-1 c-2 c-3 c-4 c-3 c-4 c-9 c-5 c-6 c-7 c-8 c-3 c-4 c-3 c-4 c-10 c-11 c-12 c-13 g k m a figure7-3 printer assembly no parts-no. Description/specification q'ty design-location serviceable remark c-1 6002-000175 screw-tappin...

  • Page 32

    7. Exploded views and parts list 7-4 sam4s er-350 series 7-4 upper case assembly b-1 b-8 b-9 b-10 b-11 b-12 b-7 b-2 b-3 b-4 b-5 b-6 e c c d b-13 b-14 b-16 b-15 b-17 f figure7-4 upper case assembly no parts-no. Description/specification q'ty design-location serviceable remark b-1 jk72-40207a pmo-cove...

  • Page 33

    7. Exploded views and parts lists sam4s er-350 series 7-5 7-5 lower case assembly e-1 e-2 e-20 d h g a b e b f q r j p s k m p e-3 e-4 e-5 e-6 e-9 e-10 e-12 e-13 e-14 e-15 s j e-16 e-17 e-18 e-19 h n e-11 e-7 e-8 figure7-5 lower case assembly no parts-no. Description/specification q'ty design-locati...

  • Page 34

    7. Exploded views and parts list 7-6 sam4s er-350 series 7-6 keyboard assembly d-1 d-2 d-3 d-4 d-8 d-5 d-9 d-10 d-11 d-12 d-6 d-7 figure7-6 keyboard assembly no parts-no. Description/specification q'ty design-location serviceable remark d jk59-10512a unit-keyboard;44key,english 1 y d-1 jk81-10945a k...

  • Page 35

    7. Exploded views and parts list sam4s er-350 series 7-7 7-7 drawer assembly 7-7-1 exploded view 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 d...

  • Page 36

    7. Exploded views and parts list 7-8 sam4s er-350 series 7-7 drawer 7-7-2 parts list 7-7-2-(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, 5b...

  • Page 37

    7. Exploded views and parts list sam4s er-350 series 7-9 7-7 drawer 7-7-2 parts list 7-7-2-(c) ass’y housing no. Code no. Description / specification q`ty design-location serviceable remark jk97-01074a mea-cover housing: a-type,basic 1 y c jk97-01074b mea-cover housing: a-type,none hole,option 1 y j...

  • Page 38

    7. Exploded views and parts list 7-10 sam4s er-350 series memo.

  • Page 39: 8  Block Diagram

    Sam4s er-350 series 8-1 8 block diagram figure8-1 system block diagram rom (program) rtc (rp5c15) drawer driver fiscal control mode key key board ram (data) fiscal eprom cash drawer clock 32.768khz battery (back-up) reset printer driver display driver /int1 display driver power fail (/into) clock 12...

  • Page 40

    8. Block diagram 8-2 sam4s er-350 series memo.

  • Page 41: 9 Pcb Parts List

    Sam4s er-350 series 9-1 9 pcb parts list 9-1 main pcb parts list no code-no description/specification q'ty design-location serviceable remar k jk94-00276b pra etc-mpcb:er-350f,rusb,russia,sensor 1 jk92-00128l pba main-main board:er-350f,rusb,russia, 1 0201-000008 adhesive-hm:#3748,wht,6500cps,v2 1 t...

  • Page 42

    9. Pcb parts list 9-2 sam4s er-350 series 9-1 main pcb parts list no code-no description/specification q'ty design-location serviceable remar k 3711-001475 connector-header:nowall,3p,1r,2.54mm,str 1 cn11(all clear) 3711-001962 connector-header:nowall,30p,2r,2.54mm,st 1 cn15(fiscal) 3711-003359 conne...

  • Page 43

    9. Pcb parts list sam4s er-350 series 9-3 9-1 main pcb parts list no code-no description/specification q'ty design-location serviceable remar k 2201-000162 c-ceramic,disc:10nf,+80-20%,50v,y5v,tp,7 3 c11,12,13 2201-000232 c-ceramic,disc:0.15nf,10%,50v,y5p,tp,4x3 1 c7 2201-000464 c-ceramic,disc:0.03nf...

  • Page 44

    9. Pcb parts list 9-4 sam4s er-350 series 9-4 fiscal board parts list(memory size=1mbits) no code no. Description / specification q’ty remarks serviceable jk92-00132b pba sub-fiscal b/d;1mbits 1 1mbits assy y 1102-000109 ic-eprom:27c010,128kx8bit,dip,32p,600mi 1 u1 y 0403-000141 diode-zener:1n4735a,...

  • Page 45: 10 Schematic Diagrams

    Sam4s er-350 series 10-1 10 schematic diagrams [ schematics sheet content ] 1. Main pcb schematics.(program eprom 512k) 1) cpu and memory block ------------------------------------------------ 10-2 2) printer and keyboard block-------------------------------------------- 10-3 3) fiscal block -------...

  • Page 46

    10-2 sam4s er-350 series 1-2 /rd 3 5 2-3 ksh a(7) a(6) d21 a(4) a(3) d18 a(1) a(0) vcc a(8) a(13) a(15) d(5) d(6) d(2) d(3) d(5) d(6) d(0) d(2) d(3) d(0) nc d(2) d(1) d(5) d(4) d(7) d(5) d(6) d(2) d(3) d(0) from cn6 #8 storbe 1k r40 er-350(512k) drawer 28v comm head #5 head #9 head #7 head #3 82pf c...

  • Page 47

    Sam4s er-350 series 10-3 nc 2 vcc /rd d(5) d(6) a(14) a(12) a(11) a(9) a(8) a(6) a(5) a(3) a(2) a(0) d(5) d(6) d(3) d(2) d(0) d(6) d(7) d(3) d(4) d(0) d(1) a(7) a(4) a(5) a(1) a(2) rs232_txd to i/f b'd a(15) a(12) a(13) a(10) a(9) er-350(512k) 5 2 cn2 fis_1m /wr to d25 (jump wire; a to a) 8255_en f/...

  • Page 48

    10-4 sam4s er-350 series a(1) pb0 pc3 pc0 pc1 pc5 pc6 pa1 pa0 pa3 45 a(0) pb1 pc2 pc4 pc7 pa2 ksh reset /rd /wr d(5)d(5) d(2)d(2)d(2) pc5 pc6 pc2 pc3 pc0 pb5 pb6 pb2 pb3 pb0 pa5 pa2 er-350(512k) 25 26 27 28 19 20 21 22 13 14 15 16 7 8 9 10 2 3 4 fis_1m cpu #3(p1.2) 8255_en d(0)d(0) d(1)d(1)d(1) d(3)...

  • Page 49

    Sam4s er-350 series 10-5 8 7 5 4 15 6 3 28v ksh 24v vcc 1 n.C. 9g er-350(512k) 2 cn1 power trans 1n4003 d7 1n4003 d3 250v 2a fu1 vf vdisp 10g c3 100nf zd1 1n4749a 24v 4 gnd 5 in 1 sc 8 dc 2 se 7 sense 3 tc 6 vcc mc34063a ic1 hs2 (h45) 10k r3 24v l1 er-350,140 uh power part 2003-12-02 100uf 16v ce4 1...

  • Page 50

    10-6 sam4s er-350 series vc c nc /rd 2 d( 5) d( 6) a( 14) a( 12) a( 11) a( 9) a( 8) a( 6) a( 5) a( 3) a( 2) a( 0) d( 5) d( 6) d( 3) d( 2) d( 0) d( 6) d( 7) d( 3) d( 4) d( 0) d( 1) a( 7) a( 4) a( 5) a( 1) a( 2) r s 232_t x d to i /f b' d a( 15) a( 12) a( 13) a( 10) a( 9) er -350( 1m ) 5 2 cn2 fi s _1...

  • Page 51

    Sam4s er-350 series 10-7 1- 2 3 5 2- 3 ksh a( 7) a( 6) d2 1 a( 4) a( 3) d1 8 a( 1) a( 0) vc c a( 8) a( 13) a( 15) d( 5) d( 6) d( 2) d( 3) d( 5) d( 6) d( 0) d( 2) d( 3) d( 0) nc /rd d( 2) d( 1) d( 5) d( 4) d( 7) d( 5) d( 6) d( 2) d( 3) d( 0) fr o m cn6 #8 st o r be f/ epr o m _ e n to c n 15 #12 1k r...

  • Page 52

    10-8 sam4s er-350 series 8 7 5 4 15 6 3 28v ksh 24v vc c 1 n. C. 9g 470uf /16v er -350( 1m ) 2 cn1 po w e r tr a n s 1n 4003 d7 1n 4003 d3 250v 2a fu 1 vf vd isp 10g 3300uf /16v c3 100nf zd 1 1n 4749a 24v 4 gn d 5 in 1 sc 8 dc 2 se 7 sen se 3 tc 6 vc c m c 34063a ic1 hs 2 ( h 45) 10k r3 24v l1 er -3...

  • Page 53

    Sam4s er-350 series 10-9 a( 1) pb6 pb7 pb3 pb4 pa5 pa4 pa7 45 a( 0) pb2 pb5 pa6 ksh r eset /rd /wr d( 5) d( 5) d( 2) d( 2) d( 2) pc 5 pc 6 pc 2 pc 3 pc 0 pb5 pb6 pb2 pb3 pb0 pa5 pa2 pb0 pc 3 pc 0 pc 1 pc 5 pc 6 pa1 pa0 pa3 fi s _1m cp u #3( p1 .2) 25 26 27 28 19 20 21 22 13 14 15 16 7 8 9 10 2 3 4 f...

  • Page 54

    10-10 sam4s er-350 series 9 6 1 5 1 ksh vcc txd n.C 9 cn3:i 7 cn3:g 5 cn3:e 3 cn3:c if-350.Sch 1 rxd gnd vcc vcc 4.7k r1 vcc 10uf 50v ce2 10uf 50v ce3 10uf 50v ce1 vcc 8 cn3:h 6 cn3:f 4 cn3:d 2 cn3:b 2003-11-27 1.0 1 3 2 q2 ksc945-g note] cn1 #4 : er-550 use for handshaking. Er-350 not connection in...

  • Page 55

    Sam4s er-350 series 10-11 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 p recision co., ltd. 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_f g1 0 1 a com vf p1_a p3_f p4_g p6_e p7_d p10_h g...

  • Page 56

    10-12 sam4s er-350 series 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_dispdiscon g1 p7_d p8_d p blue p3_f g10...

  • Page 57

    Sam4s er-350 series 10-13 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 sc al pc b d5 d6 d3...

  • Page 58

    Sam4s er-380m/f series 10-14 memo.

  • Page 59: Update Log

    Sam4s er-350 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 record service b...

  • Page 60

    ⓒ shin heung precision . Jan 2004 printed in korea. V1.0 code no. : jk68-60926a.