Ricoh G108 Service Manual page 80

SERVICE CALL
Code Class
490 D Transfer roller clutch error
515 D Duplex unit controller
hardware error 1
516 D Duplex unit controller
hardware error 2
517 D Duplex motor error
520 D Main motor error
521 D Paper gate solenoid error
530 D Controller fan error
531 D Optics unit fan error
532 D Fusing fan error
540 D Scanner motor error
541 D Thermistor short-circuit error
542 D Fusing lamp error
543 Fusing temperature error
during warming up
544 Fusing temperature error
during on
545 Fusing temperature error
during off
546 AC relay off error
547 D Fusing clutch error
610 D High voltage unit connection
error
611 D Toner end sensor error 1
612 Toner end sensor error 2
G108
Error
• Loose connection
• Defective solenoid
• Defective input output device or BCU
• Loose connection between the BCU and
• Loose connection between the BCU and
• One of the fuses on the duplex unit
NOTE: These fuses prevent excess current
from flowing into the motors.
• Loose connection
• Safety interlock switch
• Defective motor
• Defective input output device
• Interlock Safety Switch
• Loose connection
• Defective solenoid
• Defective duplex-unit controller
• Loose connection
• Defective fan
• Defective input output device
• Defective BCU
• Loose connection
• Defective LD unit
• Defective BCU
• Loose connection
• Incorrect installation of the fusing unit
• Defective fusing unit
• Defective BCU
• Loose connection
• Defective thermistor
• Defective fusing unit
• Defective power supply unit
• Defective BCU
• Insufficient power supply
• Loose connection
• Defective clutch
• Defective input output device
• Defective BCU
• Loose connection
• Defective high voltage unit
• Defective BCU
• Loose connection of the emitter of the
• Defective PCB of the receptor of the
• Defective input output device
• Defective PCB of the emitter of the toner
• Defective BCU
4-4
Possible Cause
the duplex unit controller board
the duplex unit controller board
controller has blown.
toner end sensor
toner end sensor
end sensor
SM