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SC CODES
SC
Item
Detection Conditions
No.
SC323 LD error
- Timing -
During LD writing
- Condition -
The LD main control board
detects over-current or no
feedback signal from the LD
drive board.
SC325 Magnification
The length of a line measured
correction
during main scan auto
error
magnification correction does
not fall within -0.1% to 0.1% of
the center value.
Detection timing: When three
main scan magnification
corrections failed
successively.
Related
Possible Causes
SCs
• Poor connection of
connector
• Defective LD drive
board
• Defective LD main
control board
• Defective main
control board
Dirty or incorrectly
installed synch.
detector board, or
defective polygon
motor
8
Troubleshooting Procedure
1. Check if the connectors (CN1 & CN605) on the LD drive
board and LD main control board are properly
connected.
2. Check the continuity of the cable.
3. Check that the cable connectors (CN601 & CN306) on
the LD control board and main control board are
properly connected.
4. Replace the LD drive board.
5. Replace the LD main control board
6. Replace the main control board.
This SC is only logged, and not displayed, so no particular
action is required (no adverse influence is exerted on
copier operation). Take the following actions if the
customer complains about excessive magnification errors.
Dirty synchronizing detector board: Clean it
Incorrect synchronizing detector board installation:
Reinstall
Defective polygon motor: Replace.
24 February 1999
Type
D
C
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