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24 February 1999
SC
Item
Detection Conditions
No.
SC326 FGATE1 error - Timing & Condition -
The main control board does
not receive the FGATE signal
from the LD control board
during 3 revolutions of the
transfer belt.
Related
Possible Causes
SCs
• Belt mark detection
error
• Electrical noise
• Poor connection of
connectors
9
Troubleshooting Procedure
1. Clean the belt mark located on the back side of the
transfer belt or replace the belt if the belt mark is dirty or
peeled off.
2. Clean the transfer belt home position sensor if it is dirty.
3. Clean the bias terminals of the development units if they
are dirty.
4. Check if the cable connectors (CN606 & NC408) on the
LD main control board and scanner IPU board are
properly connected.
5. Check if the cable connectors (CN601 & CN306) on the
LD main control board and main control board are
properly connected.
6. Replace the LD main control board.
7. Replace the main control board.
- Signals to Check -
• FGATE: CN601-A2 or TP608 on LD main control board
/ CN306-A9 on main control board
• Belt mark: CN218-B11, TP210, or CN233-A6 on I/O
control board / CN303-B1, TP108, or CN306-B2 on
main control board / CN601-B9 or TP606 on LD main
control board
If the machine is equipped with the controller,
1. Check if the connectors (CN609) on the LD control
board and controller I/F board are properly set.
2. Check if the controller I/F board is properly connected.
3. Replace the interface board.
SC CODES
Type
D
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