Ricoh Aficio MP C2050 Service Manual

SC Tables
D037/D038/D040/D041 4-6 SM Appendix
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Black level detection error
The black level cannot be adjusted within the target value during the
zero clamp.
 Harness disconnected
 Defective SBU
141 D
1. Check the cable connection
2. Replace the SBU.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
White level detection error
The white level cannot be adjusted within the target during auto gain
control.
 Dirty exposure glass or optics section
 SBU board defective
 Exposure lamp defective
 Lamp stabilizer defective
 Scanner motor defective
142 D
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 between SBU and BCU.
4. Replace the exposure lamp.
5. Replace the scanner motor.
6. Replace the SBU board.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SBU communication error 144 D
The SBU connection cannot be detected at power on or recovery from
the energy save mode.

Ricoh Aficio MP C2050 Specifications