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Casio PCR-255 Service Manual

Electronic cash register
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See also: User Manual
SERVICE MANUAL
INDEX
ELECTRONIC CASH REGISTER
PCR-260
PCR-255
SEP. 1996
(EX-266B)
(EX-267B)
Printer Model : M42V
(without price)

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Summary of Contents for Casio PCR-255

  • Page 1 SERVICE MANUAL (without price) ELECTRONIC CASH REGISTER PCR-260 (EX-266B) PCR-255 (EX-267B) SEP. 1996 Printer Model : M42V INDEX...

  • Page 2: Table Of Contents

    CONTENTS Page 1. FEATURES....................1 2. SPECIFICATIONS ..................1 3. OPTION ......................2 4. MAC OPERATION ..................2 5. BLOCK DIAGRAM ..................3 6. CIRCUIT EXPLANATIONS ................4 6-1. Power supply circuit ..................... 4 6-2. Reset circuit ......................... 5 6-3. Printer drive circuit ....................... 6 6-4.

  • Page 3: Features

    1. FEATURES Function PCR-260 (U.S.A.) PCR-255 (U.S.A.) Department number PLU function Customer display Effective PRG data back up function Calculator function Effective Effective 2. SPECIFICATIONS PCR-260 120V Power consumption In operation Max. 4.5W 0.09A Stand-by - 0.06A Mode SW OFF 0.05A...

  • Page 4: Mac Operation

    PCR-255 120V Power consumption In operation Max. 0.11A Stand-by 0.07A Mode SW OFF 0.06A Memory protection Same as PCR-260 Clock and calender Same as PCR-260 Environment Same as PCR-260 Printer Same as PCR-260 Ink roller Same as PCR-260 Roll paper...

  • Page 5: Block Diagram

    5. BLOCK DIAGRAM Voltage detection Buzzer Reset IC Winder Motor drive circuit Printer drive circuit DISPLAY Drawer drive circuit KEYBOARD — 3 —...

  • Page 6: Circuit Explanations

    6. CIRCUIT EXPLANATIONS 6-1. Power supply circuit DCS-267 RD4. 3EB2 1S2471 50V4. 7uF HE12TKYB 103K 2SD1803(T) 10V100µ HE12TKYB103K 1S2075K 1S2075K RD24EB2 WITH HEATSINK CRH100-FH11J-1R0 OSH-1625-MP Q1 2SD2396(K) TE-266-E2U 1SR35-100A X 4 RD3. 3EB2 DSTC50TKYR103K 470K E412181*1 2SC945 ECQ-B1H103-KF HE60TKYB222K FUSE 1A *B, *D, *G GNDP 1.

  • Page 7: Reset Circuit

    Power ON 9.65 VAC 10.52V 5.76V 10.45V 0.78V 0.12V Pulse 5.07V -23.9V Plug out 4.13V 4.30V Voltage level is measured at the following condition. 1. Plug the power cord in AC outlet. 2. Mode switch position : REG, display 0.00 3.

  • Page 8: Printer Drive Circuit

    6-3. Printer drive circuit Pin No.44 Pin No.45 Pin No.47 Pin No.62 Pin No.63 When the CPU start printing, CPU send MD signal to rotate motor unit. Then the printer send back the RP(reset pulse),PT and PT (Timing pulse) to CPU. After CPU receive RP,Pt and PT, CPU knows the position of print wheel.
  • Page 9 Mode SW Mode SW AC cord Pin No. Signal In/Out Description Plug off 41 P32/TO2 Mode switch position (REG) 42 P31/TO1 Mode switch position (RF) 43 P30/TO0 Mode switch position (PRG) 44 P03/INTP3/CI0 In Reset pulse RP from printer 45 P02/INTP2 Pulse Sub timimg pulse Pt from printer 46 P01/INTP1...

  • Page 10: Disassembly

    7. DISASSEMBLY 7-1. To open the upper case 1. Take out the printer cover and release the screw A. 2. Pushing the position B and slide the upper case to backward. 3. Lift up the upper case and remove the drawer connector. Screw A Slide this direction Position B...

  • Page 11: Diagnostoc Operations

    8. DIAGNOSTIC OPERATIONS 8-1. To start the diagnostic operation 1. Make MAC operation. 2. Turn the mode switch to PGM position. 3. Input "99999999" and press "SUB TOTAL" key. Note : Do not issue the receipt under REG / RF / X / Z mode before execute the diagnostic. If the machine issued a receipt, the diagnostic does not start.

  • Page 12: Operations

    8-3. Operations 1. Key code check (Hard key code) When pressing a key, the machine displays the following key code. Key code table FEED Display 0 2 2 022 : Hard key code 2. Switch check Press " C " button, the switch condition is appered on a display. Always 0 No display No display...
  • Page 13 3. Individual test After finishing each test, the machine issues the following receipt. Except US / Canada US / Canada d1 # d1 : Test command No. Sample receipt 1234567890ST# 1. General test Press "1" key and "SUB TOTAL" key. The machine executes the following tests.
  • Page 14 4. Battery voltage check Press "7" key and "SUB TOTAL" key. Display the voltage level of memroy protection battery. To escape this test, turn the mode switch to "OFF". VCC=5.35V(Standard) 5 3 5 Voltage level 5. Print test Press "8" key and "SUB TOTAL" key. The machine prints all character.

  • Page 15: Ic Data

    9. IC DATA 9-1. LB1268 Equivalent circuit OUT1 OUT2 OUT3 V CC 6.8k 6.8k 3.4k 9-2. S-80728AN-Z 1 OUT Bottom view 1 2 3 — 13 —...

  • Page 16: Circuit Diagram

    10. CIRCUIT DIAGRAM 2.8V 2.8V min. 10mS TRANS. DRAWER TE-266-E2U WINDER DISPLAY MOTOR 10-MT-75GC PRIMARY BATTERY PRINTER CPU-CLK M-42V E266-1 *B, *C, *D, *G, *BU UM-3(PZ) LR6PG KEY BOARD MODE KEY SW – E266-E3-1 FEED ERR. DEPT CORR SHIFT × /FOR DATE CLK #...
  • Page 17 ISMA-9604S-21C GNDP DTA143ZS LB1268 PAD CONDITION PAD 1 PAD 2 LBON OPEN OPEN PKM22EPT-2001 CST4. 19MGW S-80728AN DTC143ZS C-10 GNDP HE40TKYB221K DISP1 LB1268 10-MT-75GC CRH100-FH11J-10R ANI4 ANI5 ANI6 INTP3 ANI7 INTP2 AVss PADC INTP1 INTP0 RESET PAD2 PAD3 2200P X3 PAD2 PAD1 PAD1...
  • Page 18 5267-02A UM-3(PZ)X3 HE60TKYB222K 1S2075K RB100A VBAT DCS-267 RD4. 3EB2 1S2471 50V4. 7uF HE12TKYB 103K 10V100µ HE12TKYB103K 2SD1803(T) 1S2075K 1S2075K RD24EB2 WITH HEATSINK CRH100-FH11J-1R0 OSH-1625-MP Q1 2SD2396(K) TE-266-E2U 1SR35-100A X 4 RD3. 3EB2 DSTC50TKYR103K 470K 2SC945 E412181*1 ECQ-B1H103-KF HE60TKYB222K FUSE 1A *B, *D, *G GNDP Name...
  • Page 19 KEY BLOCK CONTACT POSITION KEY 25 KEY 13 KEY 23 KEY 11 10 16 22 28 KEY 31 KEY 19 E266–E3–1 KEY 30 KEY 18 KEY 32 KEY 20 KEY 24 KEY 12 9 15 21 27 KEY 26 KEY 14 KEY 29 KEY 17 KEY 3...
  • Page 20 UM-3(PZ) E266-1 KEY BOARD MODE KEY SW – E266-E3-1 FEED ERR. DEPT CORR SHIFT × /FOR DATE CLK # TIME ÷ T/S1 T/S2 × (NS) TOTAL – TEND Name Board No. Drawing No. PCR-255 E240059 BLOCK DIAGRAM — 18 —...
  • Page 21 P122 FIP0 P121 FIP1 LB1268 P120 FIP2 P117 FIP3 HE60TKYB222K DSTC50TKYR103K P116 FIP4 P115 FIP5 P114 FIP6 HE40TKYB221K 4.7K 1SR35-100A 2.2K 2SA933 2SD1961(S) GNDP HE40TKYB101K X2 Name Board No. Drawing No. E266-1 (1/2) PCR-255 E240060 BLOCK DIAGRAM — 19 —...
  • Page 22 1S2075K RD24EB2 WITH HEATSINK CRH100-FH11J-1R0 OSH-1625-MP Q1 2SD2396(K) TE-266-E2U 1SR35-100A X 4 RD3. 3EB2 DSTC50TKYR103K 470K 2SC945 E412181*1 ECQ-B1H103-KF HE60TKYB222K FUSE 1A *B, *D, *G GNDP Name Board No. Drawing No. E266-1 (2/2) PCR-255 E340048 BLOCK DIAGRAM — 20 —...
  • Page 23 7 13 19 25 31 KEY 2 KEY 28 KEY 4 KEY 16 KEY 5 KEY 9 6 12 18 24 30 5 11 17 23 29 IMSA–9604S–8C Name Board No. Drawing No. PCR-255 KEY BOARD E340052 — 21 —...
  • Page 24 DISP2 10-MT-75GC E267-E2 CON.1 IMSA-9604S-20C Board No. Drawing No. Name 2ND DISPLAY E440054 PCR-255 — 22 —...

  • Page 25: Pcb Layout

    11. PCB LAYOUT C N 8 A C I N A C I N G N D H O T C N 3 B - 2 B - 3 C - 2 B - 4 V F 2 D I S P 1 C - 3 D - 3 F - 1...

  • Page 26: Parts List

    12. PARTS LIST MAIN PCB BLOCK 2ND DISPLAY BLOCK (PCR-255 ONLY) POWER SUPPLY BLOCK KEYBOARD BLOCK UPPER CASE BLOCK OTHERS PRINTER UNIT DRAWER DL-1319 Notes: 1. Price and specifications are subject to change without notice. 2. As for order / supply of spare parts, refe to the "GUIDE BOOK for spare parts supply" a separate publication.
  • Page 27 4. KEYBOARD BLOCK 2. 2ND DISPLAY BLOCK (PCR-255 ONLY) 5. UPPER CASE BLOCK 6. OTHERS 1. MAIN PCB BLOCK 7. PRINTER BLOCK 3. POWER SUPPLY BLOCK 8. DRAWER BLOCK...
  • Page 28 I t e m Code No. Parts Name Specification Version MAIN PCB ASS'Y Main PCB E266-1 ass'y (PCR-260) E211682*7 Main PCB E267-1 ass'y (PCR-255) E211683*6 2120 6253 Monolithic IC LB1268 2120 7393 Reset IC S-80728AN-Z UPD78044AGF195-3B9 2200 9141 Transistor 2SA933(K,P,Q,R)
  • Page 29 3510 3465 PCB connector 5267-02A 6246 2780 Connector sub ass'y E311971*1 6246 2830 Conector sub ass'y E412181*1 U.S.A. ,Canada 3540 4780 PCB connector (for PCR-255) IMSA-9604S-20C 3500 3371 Connector 2P IL-G-2P-S3T2-E 3540 4759 PCB connector IMSA-9604S-21C 3631 0330 Fuse 237001 U.S.A.
  • Page 30 2. 2ND DISPLAY BLOCK (PCR-255 ONLY) Display tube PCB connector FFC joiner I t e m Code No. Parts Name Specification Version E276-E2 ass'y (PCR-255 only) 2408 8219 Display tube 10-MT-75GC 3540 4780 PCB connector IMSA-9604S-20C 6246 2550 FFC joiner E267...
  • Page 31 3. POWER SUPPLY BLOCK I t e m Code No. Parts Name Specification Version POWER SUPPLY BLOCK 1 6246 1820 Motor fixing stand E311858-1 2 6246 2850 Transformer cover E311870-1 3 6220 1746 Winder rubber E410716-1 4 6246 1980 Display fixing stand L E412090-1 5 6246 1970 Display fixing stand R E412089-1...
  • Page 32 4. KEYBOARD BLOCK — 30 —...
  • Page 33 I t e m Code No. Parts Name Specification Version KEYBOARD ASS'Y Keyboard ass'y E211671*5 14 6221 3988 L cap E227 E210964-1 U.S.A.,Canada 15 6221 4025 S cap E227 E311103-1 U.S.A.,Canada 18 C 16 6246 4030 L button E266 E210963-4 U.S.A.,Canada 17 6246 4020 S button E266 E311101-4...
  • Page 34 39 6246 2750 Common sheet E266 E311856-1 40 6246 2760 Spacer E266 E311857-1 41 6246 2030 Mode key plate E266BC (PCR-260) E412138-11 41 6246 2040 Mode key plate E266BC (PCR-255) E412138-12 42 1090 5329 Printer unit M-42V-001-060MA 43 6322 4499 Battery spring A-G55 A42606-1...
  • Page 35 6. OTHERS I t e m Code No. Parts Name Specification Version O T H E R S 51 6246 1760 Printer cover E110369-1 52 6246 1830 Wind pulley E311860-1 53 6246 1840 Battery cover E266 E311934-1 54 6246 4010 Key set sub ass'y E312046*3 U.S.A.,Canada,U.K.
  • Page 36 7. PRINTER UNIT Ink roll ass'y *The exploded diagram is made based on the standard specification of our company. When the part or unit indifferent from your specification is shown in the diagram, please disregard it. — 34 —...
  • Page 37 I t e m Code No. Parts Name Specification 1903 0201 Rubber fitting F801001050 1908 7661 Motor F818051010 1908 7662 Motor gear F817051010 1908 7663 Cup screw M2x2.9 B040352118 1908 7664 Paper feed drive gear ass'y F815101000 1908 7665 Detector ass'y F815151000 1903 2244 Detection wheel F808152010...
  • Page 38 8. DRAWER UNIT DL-1319 — 36 —...
  • Page 39 D L - 1 3 1 9 I t e m Code No. Parts Name Specification 6246 7446 Top cover E211698A-1 6246 8510 Coin case E340117-2 6193 3140 Drawer ass'y E240112*2 5150 1643 Nut 5500 0878 Roller DR-19B2 5580 1452 CS ring CSTW-5 6221 4902 Bill holder ZD18931...

This manual is also suitable for:

Pcr-260Ex-266bEx-267b

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