Ricoh M C250FW, Field Service Manual

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6.Troubleshooting
198
SC No. Type Error Name/Error Condition/Major Cause/Solution
SC442-
01
D ITB (Image transfer belt): Home position shift abnormality
The ITB contact sensor does not detect the home position of the ITB within 3
seconds after the ITB contact motor is turned ON.
SC442-
02
D ITB (Image transfer belt): Contact position shift abnormality
The ITB contact sensor does not detect the contact position of the ITB within 3
seconds after the ITB unit has moved to the contact position.
SC442-
03
D ITB (Image transfer belt): Spaced position shift abnormality
The ITB contact sensor does not detect the spaced position of the ITB within 3
seconds after the ITB unit has moved to spaced position.
•
Defective image transfer unit (Contact/spaced mechanism damaged)
•
Defective ITB contact sensor (S6)
•
Defective ITB contact motor (M6)
•
Defective EGB (PCB1)
•
Loose, broken, defective connector or harness defective
Check if the SC occurs by turning the power OFF then ON. If the SC occurs again,
do the following steps. Check if the SC reoccurs by cycling the power after each
step.
1.
Replace the image transfer unit.
2.
Reconnect the connectors.
3.
Replace the ITB contact sensor (S6).
4.
Replace the ITB contact motor (M6).
SC No. Type Error Name/Error Condition/Major Cause/Solution
SC490-
00
D Image transfer unit set error
The TM/P sensor does not detect the reflection from the ITB and the ITB contact
sensor does not detect home position during the initialization at power-on or after
the cover is closed.
•
No ITB installed
•
Defective ITB unit (Contact/spaced mechanism damaged)
•
Defective ITB contact sensor (S6)
•
Defective ITB contact motor (M6)
•
Defective TM/P sensor (S8)
•
Defective EGB (PCB1)
•
Loose, broken, defective connector or harness defective
Check if the SC occurs by turning the power OFF then ON. If the SC occurs again,
do the following steps. Check if the SC reoccurs by cycling the power after each
step.