Ricoh M0A0 - Page 255

6.Troubleshooting
243
SC No.
Level
Error Name/Error Condition/Major Cause/Solution
00
The scanner home position sensor does not detect the scanner coming back to the home
position.
 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
Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the
following steps.
1. Reconnect the power/signal harness.
2. Replace the following parts:
 Replace the HP sensor
 Replace the scanner motor
 Replace the harness.
SC No.
Level
Error Name/Error Condition/Major Cause/Solution
SC141-00
D
Black level correction error
The automatic adjustment has failed to correct the black level to the permissible range.
 Defective scanner carriage
 Defective BiCU board
 Defective harness
Turn the main power OFF and then ON.
SC No.
Level
Error Name/Error Condition/Major Cause/Solution
SC142-
00
D
White level correction error
The automatic adjustment has failed to correct the white level to the permissible range.
 BiCU defective
 Harness defective
 Connector defective (disconnected, loose)
 Condensation in scanner unit
 White plate dirty or installed incorrectly
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. Reconnect the following connectors;
 Scanner Carriage - BiCU harness (FFC)
 BiCU - LEDB harness (FFC)
2. Replace the scanner carriage.