Sharp JX-8200 Service Manual page 102

SHARP SERVICE MANUAL JX8200SM [11] TROUBLESHOOTING
Display 7
During printing
During diagnostics
Section OPC drum section
Transfer drum section
Drive section
PCU PWB
Content OPC drum/transfer drum motor trouble
Occurrence conditions OPC drum/transfer drum drive system trouble (motor)
Details, causes (Transfer drum home position sensor signal (TDPOS) is not recognized for 6 sec.)
The OPC drum/transfer drum motor does not reach the specified rpm. (Rotation trouble)
PCU PWB transfer drum home position sensor signal (TDPOS) input circuit trouble
Transfer drum/OPC drum drive system trouble
OPC drum/transfer drum motor trouble
Transfer drum home position trouble
Remedies Replace the OPC drum/transfer drum motor.
Repair the PCU PWB transfer drum home position sensor signal (TDPOS) input circuit.
Replace the transfer drum home position sensor.
Replace the cabinet lock switch.
Repair the drive system.
Replace the drive system.
Replace the OPC drum/transfer drum motor.
Replace the PCU PWB.
Display 8
During printing
During diagnostics
Section PCU PWB
Content PCU ROM check sum trouble
Occurrence conditions ROM trouble (CPU)
Details, causes ROM trouble (CPU)
Remedies Replace the CPU.
Replace the PCU PWB.
Display 9
During printing
During diagnostics
Section PCU PWB
Content PCU PWB PCU RAM read/write trouble
Occurrence conditions CPU RAM trouble
Details, causes CPU RAM trouble
Remedies Replace the CPU.
Replace the PCU PWB.
Display 10
During printing
During diagnostics
Section PCU PWB
Content Non volatile RAM read trouble
Occurrence conditions NV-RAM trouble
Details, causes NV-RAM trouble
Remedies Replace the NV-RAM.
Replace the PCU PWB.
*1: During the diagnostics operation, the self diagnostics function does not work.
LED All LEDs are blink
MESSAGE SERVICE (C7)
MESSAGE MAIN MOTOR ERROR
Within 6sec.
TDPOS
LED All LEDs are blink
MESSAGE SERVICE (P1)
MESSAGE *1
LED All LEDs are blink
MESSAGE SERVICE (P2)
*1
MESSAGE
LED All LEDs are blink
MESSAGE SERVICE (P3)
*1
MESSAGE
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