Ricoh MP C2504 Field Service Manual page 796

SC No. Type
SC No. Type
SC230-01 D
SC230-02 D
SC230-03 D
SC230-04 D
Error Name/Error Condition/Major Cause/Solution
The leading edge LD0 synchronization detection signal of the
corresponding color was not output within the specified time (sec.) while
the polygon mirror motor was operating at normal speed.
• The interface harness to the synchronization detection unit damaged
or not connected correctly.
• Synchronization detection board defective
• Beam does not enter photo detector.
• Abnormality around GAVD
• LDB defective
1. Turn the main power OFF/ON.
2. Check for condensation on the LDB.
3. Reconnect the connectors between LDB (Synchronizing detector
board) and IPU.
4. Replace the LD unit.
5. Replace the IPU
6. Replace the harness between LDB (Synchronizing detector board)
and IPU.
Error Name/Error Condition/Major Cause/Solution
FGATE ON error: Bk
FGATE ON error: Cy
FGATE ON error: Ma
FGATE ON error: Ye
The FGATE signal did not turn ON within the specified time (sec.) after the
writing process of the corresponding color started.
• Image processing ASIC defective on IPU
• Harness between IPU and LDB defective
1. Turn the main power OFF/ON.
2. Reconnect the connectors between IPU and controller board.
3. Replace the IPU.
Service Call 202-285
787