Ricoh M0A0 Service Manual page 254

6.Troubleshooting
SC No. Level
SC No. Level
SC112- D LED Illumination Adjustment Error: rear side
00
The white level peak reached the prescribed threshold when the white plate was scanned after a
specified number of adjustments.
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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.
2.
SC No. Level
SC120- D Scanner home position error 1
00
The scanner home position sensor does not detect the scanner leaving the home position.
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Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the
following steps.
1.
2.
SC No. Level
SC121- D Scanner home position error 2
242
Error Name/Error Condition/Major Cause/Solution

Replace the power/signal harness.
Error Name/Error Condition/Major Cause/Solution
The connection is loose.
The SPDF CIS is defective.
The white plate is not set properly, or is dirty.
The SPDF's white plate (rear side) is dirty or defective.
Reconnect the power/signal harness.
Replace the following parts:

Clean or replace the SPDF's white plate (rear side).

Replace the SPDF CIS.
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Replace the BiCU board.

Replace the power/signal harness.
Error Name/Error Condition/Major Cause/Solution
Defective scanner home position sensor
Defective scanner home position sensor harness
Defective scanner motor driver
Defective scanner motor
Timing belt, pulley, wire, or carriage not installed correctly
Reconnect the power/signal harness.
Replace the following parts:

Replace the HP sensor
 Replace the scanner motor

Replace the harness.
Error Name/Error Condition/Major Cause/Solution