GP965 SLIP PRINTER
SERVICE MANUAL
JCM GOLD (H.K.) LTD.
JULY, 98
Page 1: ...GP965 SLIP PRINTER SERVICE MANUAL JCM GOLD H K LTD JULY 98...
Page 2: ...roubleshooting 3 1 The POWER switch is turned ON but the printer doesn t operate 3 2 The printer operates but printing is abnormal 3 3 Paper feeding is abnormal 3 4 The control panel doesn t work prop...
Page 3: ...or the operation of GP 965 slip printer Power on Turn on the power of ECR first then power on GP 965 slip printer Power off Turn off the power of GP 965 slip printer first then power off the ECR Opera...
Page 4: ...3 Surface Phenomena for Troubleshooting Surface Phenomena Description Page The POWER switch is turned ON but the printer doesn t operate l The POWER LED on the control panel doesn t light l The POWER...
Page 5: ...SUPPLY Y N N Y N Y N Y Y N N Y START Is the 24VDC output voltage normal END Is the AC input voltage normal Check the contact of connector and AC switch Is the FUSE normal Check the TOP224 regulator Tr...
Page 6: ...ARD Y N N Y Y N Y N N Y START Input 24VDC to CN1 Then POWER LED lights Is the 5V voltage normal Check the contact of all connectors Trouble remedied Replace the main circuit board Trouble remedied Rep...
Page 7: ...Y N Y N START Start the self test Is the printing faint or missing dots Any printing is performed Check the contact of connector CN5 Trouble remedied Replace the main circuit board Trouble remedied Re...
Page 8: ...GP 965 service manual 8...
Page 9: ...feeding is abnormal N Y N Y Y N N Y START Are CN5 and the M 290 connector in proper contact Replace the main circuit board Trouble remedied Replace the printer mechanism Trouble remedied END END Corr...
Page 10: ...al 10 3 4 The control panel doesn t work properly N Y N Y Y N START Connector CN3 contact is normal Replace the panel SW circuit board Trouble remedied Replace the main board END Correct the contact T...
Page 11: ...ck the pin36 output of the CPU Replace the CPU Abnormal ROM Abnormal U7 Replace U7 Abnormal RAM Abnormal U11 Replace U11 The printer doesn t operate at all Abnormal CPU Faulty U15 CPU Check pin42 ALE...
Page 12: ...Replace the cable Faulty switches Check the switch Replace the switches Paper reverse is abnormal No paper reverse isn t performed Broken cable Check the cable Replace the cable Power LED doesn t lig...
