Ricoh D065 Service Manual page 455

Service Call Conditions
Laser Synchronization Detector Error: K Leading Edge (Not LD0)
D
While the polygon motor is rotating normally, no synchronizing detection
signal is output for black, leading edge for any LD other than LD0.
221
-
230 FGATE ON error: K
The FGATE ON signal does not assert within 15 second after the machine is
ready for the writing.
D
⇒
1.
2.
3.
231 FGATE OFF error: K
⇒
D
See SC 230 for troubleshooting details.
D062/D063/D065/D066
alignment)
Laser synchronization board defective
IPU defective
Harness between the laser synchronizing detector and I/F unit is
disconnected, defective
Check all connections between LD unit, LDB, IPU
LD unit
LDB defective
IPU defective
Defective ASIC
Poor connection between controller and BCU.
Defective BCU
Check the connection between the controller board and the BCU.
Replace the BCU.
Replace the controller board.
The FGATE off signal still assert within 1 second after the machine
finishes the writing.
The FGATE off signal does not assert when the machine is ready for the
next job.
3-10
Rev. 02/03/2011
SM Appendix