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Japan Cach Machine G356E Service Manual Download Page 10

 

8

3.2.3. display circuit 
  Display signals are applied to the display circuit board via J4.. 
  The display signals for digit indication are also used for key scan signals which are decoded 
At U25,U26(VHC138). The decoded signals from U25,U26 are amplified at U23,U24(driver:uPA80C) 
  and applied to the display tube on display circuit board. 
  The display signals for segment indication are output from port of CPU(P150-P157,P76,P77). 
They are amplified at U22,U23 (driver:uPA80C) and applied to the display tube on display circuit 
board. 
 
 
 
 

I1

1

I2

2

I3

3

I4

4

I5

5

I6

6

I7

7

VCC

9

O1

16

O2

15

O3

14

O4

13

O5

12

O6

11

O7

10

VSS

8

U22

UPA80C

I1

1

I2

2

I3

3

I4

4

I5

5

I6

6

I7

7

VCC

9

O1

16

O2

15

O3

14

O4

13

O5

12

O6

11

O7

10

VSS

8

U23

UPA80C

I1

1

I2

2

I3

3

I4

4

I5

5

I6

6

I7

7

VCC

9

O1

16

O2

15

O3

14

O4

13

O5

12

O6

11

O7

10

VSS

8

U24

UPA80C

DET1

1

VF1

2

SEG K

3

SEG P

4

SEG G

5

SEG F

6

SEG E

7

SEG D

8

SEG C

9

SEG B

10

SEG A

11

DG8

12

DG7

13

DG6

14

DG5

15

DG4

16

DG3

17

DG2

18

DG1

19

DG0

20

VF2

21

DET2

22
23
24
25
26

26FE BT-VK-N

SEGA

SEGB
SEGC

SEGD

SEGE

SEGF

SEGG

SEGP

SEGK

SEGL

-30V

DG0

DG1

DG2

DG3

DG4

DG5

DG6

DG7

DG8

-30V

-30V

L1
L2
L3
L4
L5
L6
L7

L8
L9

L10

L11

L12
L13
L14
L15
L16
L17

L18

C69

0.1u

C59

0.1u

+5V

+5V

+5V

C70

0.1u

VF1

VF2

DISP SW

DISPLAY DRIVE CIRCUIT

Summary of Contents for G356E

Page 1: ...1 ELECTRONIC CASH REGISTER G356E SERVICE MANUAL DOCUMENT No 5140 02 03 REV 01 TITLE G356E SERVICE MANUAL PREPARED BY K SAKAUE 2004 4 21 APPROVED BY COPY RIGHT 2004 BY JAPAN CASH MACHINE CO LTD ...

Page 2: ... 6 3 2 1 power circuit 6 3 2 2 KEY BOARD CIRCUIT 7 3 2 3 display circuit 8 3 2 4 printer drive circuit 9 3 2 5 Comparator circuit 9 3 2 6 Paper near end sensor circuit 10 3 2 7 Motor drive circuit paper feed motor 11 3 2 8 cutter motor drive circuit 11 3 2 9 Battery charge circuit 12 3 2 10 PF circuit 12 4 Trouble shooting 15 5 CONNECTOR LAYOUT OF CPU BOARD 17 5 1 CONNECTOR TABLE 18 5 2 Standard i...

Page 3: ...ntact the freight carrier and file a claim promptly If any parts are missing contact JCM within one week of receiving the ECR Initial inspection Perform the appearance and mechanical checks as listed on table 2 1 The ECR cabinet can be detached by removing the three screw on the upper side of the cabinet The two screw is on the printer side And other one is under the customer display unit It is co...

Page 4: ...2 ...

Page 5: ...e main PCB It is used for initialization and hardware configuration purposes 1 ON initial reset OFF normal operation Initial reset procedure a Initial reset 1 set DIP sw1 to ON 2 Power ON Clears RAM work area only current transaction Does not effect totals counters or program memory Operation mode become P mode b RAM clear all clear 1 Turn the mode lock key to the P mode 2 Set DIP sw1 to ON 3 Powe...

Page 6: ...characters are printed on receipt and journal automatically You can do a check of printing quality It s terminated by depressing CL key 888888888 NS key board test the display will show the each key s position number on the right side 2 digit various signal status will be showed each digit on the display It s terminated by depressing CASH key For example display P 1 0 1 0 1 1 4 5 Key position code...

Page 7: ...it microprocessor implementing L S I high speed and low power consumption Standard memory includes a 512k x 8 bit EPROM and a 512k x 8 bit static RAM chip Printer unit LTP 2w47 Cutter unit option ACU1224B0 Front display 9 digit VFD SCOM1 SCOM2 Rear display 9 digits VFD MPU M16C 80 E PROM 4M RAM 232C DRIVER KEY BOARD 9 X 8 MATRIX CONTROL LOCK PRINTER DRIVER CIRCUIT DRAWER DRAWE R DRIVER POWER CIRCU...

Page 8: ...t H becomes 0V Therefore PQ1 is in OFF condition and supplement to primary input of PT1 is cut off with that the level of point I becomes initial condition again and PQ1 turns ON Thus switching the supplement of power to primary side of PT1 secondary output 5V 30V VF1 Vf2 is stable The 24V DC pass through u1 LM2575S 5 0 voltage regulator become Vcc c steady I H 5 1 6 7 8 9 10 2 3 4 PT1 S097866 PR4...

Page 9: ...ol signals U17 MPU executes specific operation Scan signal MPU Data bus Fig 3 1 key board circuit Timing chart of key scan signals P110 P111 112 P113 P114 Y0 Y1 Y2 Y7 5 48msec C 3 B 2 A 1 G1 6 G2A 4 G2B 5 Y7 7 Y6 9 Y5 10 Y4 11 Y3 12 Y2 13 Y1 14 Y0 15 U25 74HC138 C 3 B 2 A 1 G1 6 G2A 4 G2B 5 Y7 7 Y6 9 Y5 10 Y4 11 Y3 12 Y2 13 Y1 14 Y0 15 U26 74HC138 D1 D2 D3 D4 D5 D6 D7 D8 D9 1 2 3 4 5 6 7 8 9 J1 W ...

Page 10: ...1 1 I2 2 I3 3 I4 4 I5 5 I6 6 I7 7 VCC 9 O1 16 O2 15 O3 14 O4 13 O5 12 O6 11 O7 10 VSS 8 U22 UPA80C I1 1 I2 2 I3 3 I4 4 I5 5 I6 6 I7 7 VCC 9 O1 16 O2 15 O3 14 O4 13 O5 12 O6 11 O7 10 VSS 8 U23 UPA80C I1 1 I2 2 I3 3 I4 4 I5 5 I6 6 I7 7 VCC 9 O1 16 O2 15 O3 14 O4 13 O5 12 O6 11 O7 10 VSS 8 U24 UPA80C DET1 1 VF1 2 SEG K 3 SEG P 4 SEG G 5 SEG F 6 SEG E 7 SEG D 8 SEG C 9 SEG B 10 SEG A 11 DG8 12 DG7 13 ...

Page 11: ...thermal head has a thermistor for detect the head temperature The level of the TH_IN is changed according to head temperature When head is heated too high temperature the output level of comparator goes to H level Thus thermal head will be non activity This status is released when the head become cool 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 J7 28FE BT VK N VP VP ...

Page 12: ...D cannot reflect so the photo transistor cannot receive the return light Thus sensor output level become L about 0 3V There is transistor on the CPU board in order to amplify the inputted signal So the inputted signal is not stable that Q7 Q8 amplify the signal to 0V or 5V If paper roll slip out from holder JNEND or RNEND will become to 5V When paper roll is on the holder JNEND or RNEND is 0V R72 ...

Page 13: ... When CUT_S goes to H the machine brakes the cutter motor by make CUT_B to H The brake time is about 100msec Timing chart is following CUT_A CUT_B CUT_S MOTOR 1 2 3 4 J13 5045 0 IN1 1 IN2 2 MA 3 MB 5 Vcc 7 GND 4 TA8428K R68 1K C39 0 1U C54 100U L25 5V CUT A CUT B CUT_S 50V CUTTERMOTORDRIVE CIRCUIT VCC 8 PHASE1 11 PHASE2 3 IO1 13 IO2 1 I11 12 I12 2 VBB 24 OUTA 17 OUTB 14 OUT2A 20 OUT2B 23 SENSE1 15...

Page 14: ...output is applied to VBB When the power is turned off battery output backs up the memory contents of RAM chip and CPU internal RAM D13 3 2 10 PF circuit When the power is off the PF is L But when the power is on the Q27 Q33 are turn on the PF is H 21 8V 24 4V 17 2V ＰＦ signal 5V C32 100u C33 100u S1B_S8 D12 S1B_S8 R31 150 BT1 BATTERY 5V VBB PS_ 5V 10V 10V C53 4 7u D20 HZU16B 2 3 1 Q33 DTC124EUA 2 1...

Page 15: ...13 PF signal timing chart ...

Page 16: ......

Page 17: ...y 20MHz Replace crystal x1 Replace U17 Machine doesn t work at all Printer doesn t work after power on The levels of PF lines don t become H Is D20 defect Are Replace D20 Replace U27 and U33 Date time data fails Date doesn t increment Date time data doesn t increment correctly Crystal x2 32 768kHz is not oscillating properly Check wave form of pin 17 and pin 18 of U17 frequency 32 768kHz Replace c...

Page 18: ...verter transformer Center tap voltage of filament is not correct Is the cathode voltage of PD14 23 5V Replace PD14 Display doesn t light Display tube is broken Is the display tube cracked Replace the display tube Abnormal display Some ghost are displayed Cut off voltage is generate from PD21 Is cathode voltage of PD14 23 5V Replace PD14 Specific digit is not lit correctly Key input correct Trouble...

Page 19: ...NNECTOR LAYOUT OF CPU BOARD 1 pin side C U TTER W I N D ＫＳＣＡ Ｎ ＫＲ FI S C A L C O M 3 C O M 4 C O M 2 C O M 1 ＤＲＷ N EN D C TLK EY R M O TO R TH ER M A L H EA D J M O TO R D I SP LA Y P O W ER J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 J11 J12 J14 J15 J16 B Z JP 1 30 1 16 15 S 1 1 2 O N ...

Page 20: ...ignal Pin Signal 1 A 1 A 1 VP 15 PGND 1 Vcc 2 B 2 B 2 VP 16 PGND 2 CTS 3 A 3 A 3 VP 17 PGND 3 RTS 4 B 4 B 4 VP 18 PGND 4 RxD 5 PS 5 PS 5 DATOUT 19 PGND 5 TxD 6 PS 6 PS 6 CLK 20 PGND 6 GND 7 GND 7 GND 7 LATCH 21 VCC 8 NC 8 NC 8 DST2 22 DST4 J9 SCOM2 9 NC 9 NC 9 DST1 23 DST3 Pin Signal 10 CNN_R 10 CNN_J 10 TH 24 DATIN 1 Vcc 11 GND 11 GND 11 PGND 25 VP 2 CTS 12 PGND 26 VP 3 RTS 13 PGND 27 VP 4 RxD 14...

Page 21: ...le pin assignment WI 837N for GP965 slip printer J8 J9 J16 J17 Signal Dsub 9pin female Signal 1 Vcc 6 Vcc 2 CTS 5 CTS 3 RTS 4 RTS 4 RxD 3 RxD 5 TxD 2 TxD 6 GND 1 GND Inner cable pin assign for hand scanner ZE84RMD4JK Panasonic Wi 908 J8 J9 J16 J17 Signal Dsub 9pin female Signal 1 Vcc 9 Vcc 2 CTS 1 CTS 3 RTS 4 RTS 4 RxD 2 RxD 5 TxD 3 TxD 6 GND 7 GND Interface cable for between G356 and the hand sca...

Page 22: ...Please exchange the inner cable WI 907 with WI 837N WI 837N GP965 Case2 please use the interface cable WI 1369 WI 906 WI 1369 SCOM1 or WI 907 WI 1369 SCOM2 6 Appendix Number of PLU PB actually maximum occupation PLU 12 char 9269 PLU 20 char 7657 PLU 15 char 7657 PB 7657 Paper near end level Point Paper yes No paper J15 8 4 71 0 320 JNEND 9 3mV 5 02 J15 4 4 13 180 9mV RNEND 10 7mV 5 02 HARD RESET p...

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