Ricoh MD-P2 Field Service Manual page 196

6. Troubleshooting
Laser Synchronizing Detection Error: [M]/[C]
The laser synchronizing detection signal for LDB [M]/[C] is not output after the LDB unit has
turned on while the polygon motor is rotating normally.
• Disconnected cable from the laser synchronizing detection unit or defective connection
222
• Defective laser synchronizing detector
D
• Defective LDB
• Defective EGB
1. Check the connectors.
2. Replace the laser optics unit.
3. Replace the EGB.
LD error
The IPU (EGB) detects a problem at the LD unit.
6 240
• Worn-out LD
D
• Disconnected or broken harness of the LD.
1. Replace the laser optics unit.
SC 3xx (Charge Error)
High voltage power output error
The measured voltage is not correct when the EGB measures each charge output (charge,
development, image transfer belt unit, and transfer unit).
• Disconnected or defective high voltage harness
300
• Defective high voltage power supply
D
• Defective EGB
1. Check or replace the harnesses.
2. Replace the high voltage power supply board
3. Replace the EGB.
4. Replace the AIOs.
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