Casio I/O-PB-11 Service Manual

Electronic cash register option i/o board

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SERVICE MANUAL
(without price)
ELECTRONIC CASH REGISTER OPTION I/O BOARD
I/O-PB-11
(EX-I/O-PB-11)
NOV. , 1994
FOR MODEL:
CE-4700
TK-1300
TK-2300
TK-2700
TK-5100
INDEX

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Table of Contents
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Summary of Contents for Casio I/O-PB-11

  • Page 1 SERVICE MANUAL (without price) ELECTRONIC CASH REGISTER OPTION I/O BOARD I/O-PB-11 (EX-I/O-PB-11) NOV. , 1994 FOR MODEL: CE-4700 TK-1300 TK-2300 TK-2700 TK-5100 INDEX...
  • Page 2: Table Of Contents

    CONTENTS IN/ON-LINE BOARD I/O-PB-11 Page 1. TO INSTALL THE I/O-PB-11 ................. 1 2. INTERFACE .................. 3 2-1. C-In line (ECR to ECR) ................. 3 2-2. On line .................. 6 3. CIRCUIT EXPLANATIONS ................8 3-1. Address selection .................. 8 3-2. Scale buffer circuit................. 9 3-3.
  • Page 3: In/On-Line Board I/O

    5) Mount necessary RAM chips to main PCB. 6) Mount the two locking supporters on the PCB. 7) Connect the I/O-PB-11 and main PCB by two cables carefully caused the cable lines are very narrow. 8) Connect the F.G. wire of I/O-PB-11 to the F.G. plate by screw.
  • Page 4 Cut the masking cover for ON-line SCL-CB-10 connector. Cut the masking cover for scale. Cut the masking cover for In-line connector Locking supporters I/O-PB-11 Check whether those capacitors are lying. In-line cables Cut the masking part if necessary. Scale cable Cable fixing plate Cable supporter —...
  • Page 5: Interface

    2. INTERFACE 2-1. C-In line (ECR to ECR) C-In line connection diagram The maximum C-In line cable length and the maximum connection unit will be varied by the in-line communication speed as shown below list. [C-In line cable wiring] Total cable length is max. A m Master Satellite Satellite...
  • Page 6 To fix C-In line connector to ECR. Connect the C-In line cable and C-In line connector as shown below: [Connector on the end of C-In line] Terminal cap C-In line connector C-In line cable Black Black Wrap bent shield wire with Copper tape.
  • Page 7 Connect the C-In line connector as shown below: C-In line cable Cable fixing plate Part of copper tape Cable supporter Connect to C-In line connector. C-In line cable specification 1. Structure Conductor Material: Tin plated mild copper twist Cross section area: 0.5mm Construction: 20 pieces/0.18 mm...
  • Page 8: On Line

    2-2. On line (1) Direct connection to P/C PC-DOS Personal Computer Cable length = Max. 15m [Cable] 1) Wiring diagram (A) A SYNC. SIGNAL PIN SINGNAL 2) Parts list Code Number Part Specification 3612 0762 DIN 13P PLUG TCP9361-71-111 3513 1019 Junction shell DB-C2-J9 3510 2043...
  • Page 9 (2) MODEM connection MODEM Cable length = Max. 15m [Cable] 1) Wiring SIGNAL PIN SINGNAL – – – 2) Parts list Code Number Part Specification 3612 0762 DIN 13P PLUG TCP9361-71-111 3513 1019 Junction shell DB-C2-J9 3510 2043 Shell connector DB-25S Cable PLGW-3456-01A...
  • Page 10: Circuit Explanations

    3. CIRCUIT EXPLANATIONS 3-1. Address selection CS for IC10 (C-In line controller) IC17 +12V IC12 -12V IC14 CLK for IC9 RDTM IC14 IC14 IC14 IC16 -12V -12V -12V +12V USART IC12 IC15 IC15 RXCLK IC15 IC12 RESET TXCLK IOCS TXEMP IC15 RESET SYNC...
  • Page 11: Scale Buffer Circuit

    3-2. Scale buffer circuit When a measured object is put on the scale, the scale starts weighing. During weighing, MO signal is "H". When the weighing is finished with indication of the weight of measures object, the MO signal becomes "L". Then EN signal is output to the scale and the scale output the weight data (D0~D3) to the scale buffer.
  • Page 12: On Line Circuit (Rs-232C)

    3-3. On line circuit (RS-232C) Baud rate selection for On line (RS-232C) Basic clock (307.2 KHz) is divided into seven clocks by binary counter IC16 and they are supplied to D0~D6 terminals of multiplexer IC13. The IC13 outputs one clock to USART according to the condition of select signals A, B, and C. IC16 IC13 RXCLK...
  • Page 13 On line circuit (RS-232C) The on line port (RS-232C) is controlled by the USART µPD71051 and supported only asynchronous communication. RDTM Pin description of UPD71051C Pin description of on line connector Pin No. Signal Description Pin No. Signal Description 1,2,5~8, D0~D7 Data bus Signal ground...
  • Page 14: C-In Line Circuit

    3-4. C-In line circuit IC10 IC11 INTR TXEN TXEN RXIN TXOUT TXOUT RXIN C-In line controller (COM20020B) IC10 A0/MUX A0/MUX RD/DS ADDRESS DECODING 2K X 8 WR/DIR A2/ALE CIRCUITRY A2/BALE INTR ADDITIONAL REGISTERS RESET IN AD0~AD2, TXEN D3~D7 RXIN PULSE2 PULSE1 PULSE1 STATUS/...
  • Page 15 COM20020B pin description Pin No. Name In/Out Status Status Status Description of OFF of ON of ON No Token Token A0/MUX Pulse Input. On a non-multiplexed bus, these signals are dirctly connectoed to the low bits of the host address bus. A2/ALE On a multiplexed address/data bus, A0/MUX is tied low, A1 is left open,...
  • Page 16 Pin No. Name In/Out Status Status Status Description of OFF of ON of ON No token Token INTR Pulse Interrupt output. This active low signal is generated by the COM20020 when an enabled interrupt condition occurs. INTR returns to its inactive state when the interrupt status condition or the corresponding interrupt mask bit is reset.
  • Page 17: Diagnostic Operations

    4. DIAGNOSTIC OPERATIONS 4-1. To start the diagnostic operation START Set mode switch to OFF mode. While pressing the feed key, turn the mode switch to PROGRAM. Release the feed key after 2 seconds. (Display shows all "0".) Input following 10 digits number. 9 9 9 9 9 0 0 0 0 0 (Fixed value) Press #2 key (Refer the each service manual for the key location.) The machine prints initial message and issues the receipt.
  • Page 18: Check Items For I/O-Pb-11

    4-2. Check Items for I/O-PB-11 C-In line ID No. & Baud rate set (High speed in-line talken start command) C-In line test termination (Termination command) C-In line CN (connection) type message transmission test C-In line CN (connection) type message reception test...
  • Page 19 C-In line test termination (Termination command) This command is for the termination of the TOKEN. [Operation] Press [Print sample] C-In line CN (connection) type message transmission test This command will check the communication by CN type message. This operaton will compare with transmission data and reception data after sending data to the reception machine.
  • Page 20 C-In line CN (connection) type message reception test This command will check the communication by CN type message. This operaton will return the transmission data after reception data without any change. Before performing this transmission test, set the ID No. & Baud rate by the Item No.1 operation.
  • Page 21 [Print sample (Normal end) ] [Print sample (Abnormal end) ] ER83 01-0000 Error code Error block counter No. Error machine ID No. C-In line CL (connection less) type message reception test This command will check the communication by CL type message. This operaton will receive the transmission data.
  • Page 22 Diagnostic program error code Error Nature of error Function Details Code code ROM check sum error At power on When the diagnostic program is started up, the last 2 digits of the ROM's check sum is not 00. RAM write error Test data cannot be written in the RAM.
  • Page 23 Error Nature of error Function Details Code code KB-1 time-out error An error occurred during test of KB-1. KB-1 reception error An error occurred while reading data of KB-1. Scale data error An error occurred while reading scale data. Thermal printer board 36, 37 An error occurred in the thermal printer board.
  • Page 24 Error Nature of error Function Details Code code C-in line controller error 81,83,84,85,86 Reset error of C-In line controller (128) C-in line controller error 81,83,84,85,86 Receive interruption operation is not finished. (129) C-in line controller error Initial error of controller. The ID No. and start up operation (130) is not finished yet.
  • Page 25 Error Nature of error Function Details Code code C-Inline protocol error Reception application program is busy at the other terminal. (160) C-Inline protocol error The ID No. does not exist in the network. (161) XMODEM protocol error DSR signal does not turn on even ER signal turns on at the (176) open time.
  • Page 26: Error Code List

    5. ERROR CODE LIST Error codes appear on the display whenever you make a mistake during operations. Error Action Meaning Code Display Operation without entering PROGRAM, X Enter secret code (PASSWORD). PASSWORD or X mode secret code (PASSWORD). Registration without entering clerk secret Enter clerk secret number.
  • Page 27 Error Meaning Action Code Display Actual stock quantity less than or equal to Perform stock maintenance. MIN. STOCK minimum stock quantity. Negative value for actual stock quantity. Perform stock maintenance. - STOCK Check endorsement printing not performed.* Perform check endorsement printing op- CHK ENDORSE eration.
  • Page 28 Error Meaning Action Code Display Kitchen printer down error. Check the power of the kitchen printer. KP ERROR #n Kitchen printer paper near end error. Change the roll paper to new one. KP PAPER #n Kitchen printer buffer error. The over data is printed on the receipt KP BF OVER paper automatically.
  • Page 29: Ic Data

    6. IC DATA TC74HCU04AP TC74HC00AP TC74HC4050AP HEX INVERTER QUAD 2-INPUT NAND GATE (TOP VIEW) (TOP VIEW) (TOP VIEW) TC74HC02AP TC74HC244AP 2A 2B VSS (TOP VIEW) (TOP VIEW) TC74HC139AP INPUTS OUTPUTS SELECT ENABLE SELECTED OUTPUT NONE X: Don't care (TOP VIEW) —...
  • Page 30 TC74HC273AP OCTAL D-TYPE FLIP FLOP WITH CLEAR INPUTS OUTPUT CLEAR CLOCK FUNCTION Clear (TOP VIEW) – – No change TC74HC4049AP (TOP VIEW) TC74HC4040AP (TOP VIEW) — 28 —...
  • Page 31 TC74HC151AP (TOP VIEW) SN751178N SN75188N SN75189AN (TOP VIEW) (TOP VIEW) (TOP VIEW) — 29 —...
  • Page 32: Parts List

    7. PARTS LIST — 30 —...
  • Page 33 — 31 —...
  • Page 34: Pcb Layout

    8. PCB LAYOUT 74HC4040 74HC139 74HC00 74HC151 74HC02 SN751178 74HC273 74HC244 74HCU04 74HC4050 SN75189 SN75188 SN75189 74HC4049 SN75189 74HC4049 SN75188 SN75189 74HCU04 74HC4050 74HC244 74HC273 SN751178 74HC151 74HC02 74HC139 74HC4040 74HC00 — 32 — — 32 —...
  • Page 35: Circuit Diagram

    TXOUT TXOUT -12V IC14 D0~7 RDTM IC14 IC14 IC14 IC16 IC13 -12V -12V -12V +12V IC12 IC15 IC15 ENABLE RXCLK IC15 IC12 RESET TXCLK CLOCK IOCS TXEMP IC15 RESET SYNC RXRDY TXRDY IC12 Circuit diagram I/O-PB-11 (1/2) — 33 —...
  • Page 36 ENABLE ENABLE CLOCK CLOCK MOTION RANGE RDTM IC11 TXEN TXOUT RXIN Circuit diagram I/O-PB-11 (2/2) — 34 —...
  • Page 37 8-11-10, Nishi-Shinjuku Shinjuku-ku, Tokyo 160, Japan Telephone: 03-3347-4926...

This manual is also suitable for:

Ce-4700Tk-1300Tk-2300Tk-2700Tk-5100

Table of Contents