Ricoh D131 - Page 473

SC100: Scanning
D131/D132/D133 2-6 SM Appendix
SC142
D
White level detection error
The white level cannot be adjusted to the second target level within the
target during auto gain control.
-
 Dirty exposure lamp or optics section
 SBU board defective
 SIOB defective
 IPU board defective
 BCU board defective
 Harnesses are disconnected.
 Exposure lamp defective
 Lamp stabilizer defective
 Scanner motor defective
1. Clean the exposure glass, white plate, mirrors, and lens.
2. Check if the exposure lamp is lit during initialization.
3. Check the harness connection.
4. Replace the exposure lamp.
5. Replace the scanner motor.
6. Replace the SBU board, SIOB, IPU board or BCU board.
SC144
D
SBU transmission error
 After the SBU switches on, the BCU detects one of the following
conditions on the SBU:
 1 s after power on, the SYDO signal does not go high, even after 1
retry.
 1 s after power on, the SYDO signal goes high, but the SBU ID
could not be read after 3 attempts.
-
 SBU defective
 SIOB defective
 BCU defective
 Harness between the SBU - SIOB is disconnected
 Harness between the SIOB - BCU is disconnected
 Harness between the SIOB – PSU is disconnected