Ricoh D025 Service Manual page 464

SC Tables
No. Type
220 D Laser synchronizing detection error: start position [K]: LD0
222 D Laser synchronizing detection error: start position [Y]: LD0
226 D Laser synchronizing detection error: start position [C]: LD0
The laser synchronizing detection signal for the start position of the
LDB [K], [Y], [C] is not output for two seconds after LDB unit turns on
while the polygon motor is rotating normally.
- -
1.
2.
3.
4.
No. Type
FGATE ON error: K
The PFGATE ON signal does not assert within 5 seconds after
processing the image in normal job or MUSIC for start position [K].
230 D
1.
2.
3.
D023/D025
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Disconnected cable from the laser synchronizing detection unit or
defective connection
Defective laser synchronizing detector
Defective LDB
Defective BICU
Check the connectors.
Replace the laser-synchronizing detector.
Replace the LDB.
Replace the BICU.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Defective ASIC (Lupus)
Poor connection between controller and BICU.
Defective BICU
Check the connection between the controller board and the BICU.
Replace the BICU.
Replace the controller board.
3-12 SM Appendix