Laser Failure/BD Failure
Possible Causes
The laser shutter cannot be opened due to the damaged claw
of the cartridge cover.
Action: Replace the cartridge cover.
Poor contact in the connectors in the laser scanner unit.
Action: Reconnect the connector J801F, J802F on the
laser/scanner unit and connector J208F on the engine controller PCB.
Defective laser/scanner unit.
Action: Turn ON the printer. Immediately after turning ON
the printer, if the voltage between the connectors J208M-5 and J208M-6 on the
engine controller PCB is about +5V and also the voltage between the connectors
J208M-1 and J208M-4 is about +24V, replace the laser/scanner unit.
Defective engine controller PCB.
Action: Replace the engine controller PCB.
Fixing Unit Failure
Possible Causes
Poor contact in the connectors.
Action: Reconnect the connector J206 on the engine
controller PCB.
Broken wire or short-circuited thermistor.
Action: Turn OFF the power and remove the fixing unit from
the printer. Measure the resistance between the connectors J703-1 and J703-2 on
the fixing unit side. If the resistance is not within the range from about 250
kΩ to about 800 kΩ (room temperature), replace the fixing film unit.
Broken wire of the heater or blown thermal fuse.
Action: Remove the fixing unit. Check the connectors J102F-1
and J102F-2 on the fixing unit side for continuity. If the connectors have no
continuity between them, replace the fixing film unit.
Defective engine controller PCB.
Action: Replace the engine controller PCB.
Although a paper jam has not occurred, the printer cannot
enter the READY mode, outputting a “JAM” status.
Possible Causes
Defective paper delivery sensor spring.
Action: If the spring is not installed correctly, reinstall
it correctly. Or, if the spring is deformed or damaged, replace it.
Defective paper delivery sensing lever.
Action: If the lever is not installed correctly, reinstall
it correctly. Or, if the lever is deformed or damaged, replace it.
Defective paper top sensor spring.
Action: If the spring is not installed correctly, reinstall
it correctly. Or, if the spring is deformed or damaged, replace it.
Defective paper top sensing lever.
Action: If the lever is not installed correctly, reinstall
it correctly. Or, if the lever is deformed or damaged, replace it.
Defective engine controller PCB.
Action: Replace the engine controller PCB.
Although the door is closed after installing the cartridge,
the printer cannot enter the READY mode, outputting a “DOOR OPEN” status.
Possible Causes
Damaged claw of the door switch on the connector holder.
Action: Replace the connector holder.
Defective door open detection unit.
Action: Replace the door open detection unit.
Defective door open detection switch / engine controller
PCB.
Action: Replace the engine controller PCB.
Although paper is set in the printer, the printer cannot
enter the READY mode, outputting a “PAPER OUT” status.
Possible Causes
Defective paper out sensing lever.
Action: If the lever is not installed correctly, reinstall
it correctly. Or, if the lever is deformed or damaged, replace it.
Defective paper out sensor.
Action: Replace the paper out sensor (PS003.)
Defective engine controller PCB.
Action: Replace the engine controller PCB.
Although the cartridge is installed in the printer, the
printer cannot enter the READY mode, outputting a “NO CARTRIDGE” status.
Possible Causes
Poor contact in the primary high-voltage contact on the
engine controller PCB and cartridge contact.
Action: Clean the contacts if dirty. If the problem still
remains after cleaning, or parts are deformed or damaged, replace them.
Defective cartridge.
Action: Replace the cartridge.
Defective engine controller PCB.
Action: Replace the engine controller PCB
