Ricoh G-P2 Service Manual page 36

G160 Service Manual
SC
Symptom
[Level]
Transfer roller contact error
The transfer roller contact
452
sensor does not detect the
[D]
movement of actuator at the
sensor while the polygon
motor rotates.
High Voltage Power 1: High voltage output error
490
Error signal is detected for 10
[D]
times consecutively.
High Voltage Power 2: High voltage output error
491
Error signal is detected for 10
[D]
times consecutively.
Possible Cause/Required Action
Defective transfer roller contact sensor
Defective transfer roller contact motor
Defective IOB
1. Replace the transfer roller contact
sensor.
2. Replace the transfer roller contact
motor.
3. Replace the IOB.
One of the DC bias outputs for each PCU is
shorted or one of the transfer belt bias outputs
for [Y], [M] and [C].
Power leaking
Defective connection
Disconnected cable
Defective PCU
Defective High Voltage Power 1
1. Replace the High Voltage Power 1.
2. Reset the cables and components.
3. Replace the PCU.
One of the separation bias output,
development bias output and transfer belt
cleaning bias output is shorted or one of the
transfer belt bias output for [K] and transfer
roller bias output is shorted.
Power leaking
Defective connection
Defective PCU
Defective High Voltage Power 2
1. Replace the High Voltage Power 2.
2. Reset the cables and components.
3. Replace the PCU.
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23-Feb-06