Sharp MX-C250 Service Manual page 190

F2-50 K drum phase sensor trouble
Cause Drum phase sensor trouble.
Harness and connector connection trouble.
Drum drive section trouble.
MFPC PWB trouble
Check & Remedy Use SIM30-1 to check the operation of "DHPD_K.".
Replace the drum phase sensor.
Check connection of the connectors and the
harness.
Repair the drum drive section.
Replace the MFPC PWB.
F2-51 CL drum phase sensor trouble
Cause Drum phase sensor trouble. (DHPCL)
Harness and connector connection trouble.
Drum drive section trouble.
MFPC PWB trouble.
Check & Remedy Use SIM30-1 to check the operation of
"DHPD_CL".
Replace the drum phase sensor.
Check connection of the connectors and the
harness.
Repair the drum drive section.
Replace the MFPC PWB.
F2-58 Process humidity sensor trouble
Cause Process humidity sensor trouble.
Harness and connector connection trouble.
PMFPC PWB trouble.
Check & Remedy Replace the process humidity sensor.
Check connection of the connectors and the
harness.
Replace the MFPC PWB.
F2-64 Toner supply operation trouble (BK)
Cause Toner motor trouble.
Toner drive clutch trouble.
Toner density sensor trouble.
Connector/harness trouble.
MFPC PWB trouble.
Toner cartridge trouble.
Developing unit trouble.
Check & Remedy Replace the toner motor.
Replace the toner drive clutch.
Replace the toner density sensor.
Connector/harness trouble.
Replace the MFPC PWB.
Replace the toner cartridge.
Replace the developing unit.
F2-65 Toner supply operation trouble (C)
Cause Toner motor trouble.
Toner drive clutch trouble.
Toner density sensor trouble.
Connector/harness trouble.
MFPC PWB trouble
Toner cartridge trouble.
Developing unit trouble.
Check & Remedy Replace the toner motor.
Replace the toner drive clutch.
Replace the toner density sensor.
Connector/harness trouble.
Replace the MFPC PWB.
Replace the toner cartridge.
Replace the developing unit.
F2-66
Check & Remedy
F2-67
Check & Remedy
F2-70
Check & Remedy
F2-71
Check & Remedy
F2-72
Check & Remedy
MX-C250 TROUBLESHOOTING 7 – 9
Toner supply operation trouble (M)
Cause Toner motor trouble.
Toner drive clutch trouble.
Toner density sensor trouble.
Connector/harness trouble.
MFPC PWB trouble
Toner cartridge trouble.
Developing unit trouble.
Replace the toner motor.
Replace the toner drive clutch.
Replace the toner density sensor.
Connector/harness trouble.
Replace the MFPC PWB.
Replace the toner cartridge.
Replace the developing unit.
Toner supply operation trouble (Y)
Cause Toner motor trouble.
Toner drive clutch trouble.
Replace the toner drive clutch.
Toner density sensor trouble.
Connector/harness trouble.
MFPC PWB trouble
Toner cartridge trouble.
Developing unit trouble.
Replace the toner motor.
Replace the toner density sensor.
Connector/harness trouble.
Replace the MFPC PWB.
Replace the toner cartridge.
Replace the developing unit.
Improper toner cartridge detection
(BK)
Cause An improper toner cartridge is inserted. (The main
unit detects a toner cartridge of a different
specification.)
Toner cartridge trouble.
MFPC PWB trouble
Replace the toner cartridge.
Replace the MFPC PWB.
Improper toner cartridge detection
(C)
Cause An improper toner cartridge is inserted. (The main
unit detects a toner cartridge of a different
specification.)
Toner cartridge trouble.
MFPC PWB trouble.
Replace the toner cartridge.
Replace the MFPC PWB.
Improper toner cartridge detection
(M)
Cause An improper toner cartridge is inserted. (The main
unit detects a toner cartridge of a different
specification.)
Toner cartridge trouble.
MFPC PWB trouble.
Replace the toner cartridge.
Replace the MFPC PWB.