Ricoh G081, Service Manual

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SERVICE CALL CONDITIONS
SM 4-3 G081/G092
Trou
ble
-
sho
oting
SC Symptom Possible Cause/Required Action
Belt tension unit cam error 471
Even though the belt
tension unit tries to return to
its home position several
times, the home position
sensor is not activated. •
Defective transfer belt unit
•
Pin 3 (CN25 on engine control board) unable to
send signal
•
Defective transfer belt tension unit
1. Replace the transfer belt unit.
2. Replace the engine control board.
3. Replace the transfer belt tension unit.
BK solenoid error 486
The BK solenoid cannot
drive the black PCU. •
Defective connection between engine control board
(CN21) and BK solenoid
•
Pin 1 (CN21 on engine control board) unable to
send solenoid control signal
•
Defective drive unit
1. Connect the cable between the engine control
board (CN21) and BK solenoid correctly.
2. Replace the engine board.
3. Replace the drive unit.
Solenoid error 487
Any of the following
solenoids has caused a
short circuit: changer
solenoid, paper feed
solenoid, toner supply
solenoid. •
Solenoid drive transistor short-circuited
1. Replace the engine controller board.
2. Replace the defective solenoid.
Fusing fan motor error 530
The fusing unit fan motor
does not operate. •
Voltage between pins 2 and 3 (CN9 on engine
control board) abnormal (not +24V)
•
Defective fusing unit fan
1. Replace the engine control board.
2. Replace the fusing unit fan.
PSU cooling fan error 531
The PSU cooling fan does
not operate. •
Voltage between pins 1 and 2 (CN8 on engine
control board) abnormal (not +24V)
•
Defective PSU cooling fan
1. Replace the engine control board.
2. Replace the PSU cooling fan.
Fusing unit sub-cooling fan (left) error 532
The fusing unit sub-cooling
fan does not operate. •
Voltage between pins 1 and 2 (CN9 on engine
control board) abnormal (not +24V)
•
Defective sub-cooling fan
1. Replace the engine control board.
2. Replace the sub-cooling fan.