Ricoh D146 Service Manual page 488

Service Call 101-195
SC No. Level
SC142-00 D
D146/D147/D148/D149/D150
Error Name/Error Condition/Major Cause/Solution
White level detection error
The white level cannot be adjusted to the second target level
within the target during auto gain control.
§
SBU defective
§
LED defective
§
IDB (LED driver) defective
§
IPU defective
§
Power/signal harness defective
§
Scanner drive error
§
Condensation in scanner unit
§
Mirrors or lenses dirty or positioned incorrectly
§
White plate dirty or installed incorrectly
1. Turn the power off/on.
2. Perform the following operations:
§
Reconnect the power/signal harness.
§
Reattach/clean the mirrors/lenses.
§
Reattach/clean the white plate.
3. Replace the following parts:
§
Replace the SBU board.
§
Replace the LED board.
§
Replace the IDB board.
§
Replace the IPU board.
§
Replace the SIO board.
§
Replace the power/signal harness.
5-14 SM