6.Troubleshooting
639
[E]: Replacing the operation panel, the USB cable or the BiCU (PCB16)
Refer to "Operation Panel Unit" or "BiCU (PCB16)".
Prints are not stapled correctly
Symptom
• Prints were made in staple mode but some sheets are not stapled.
Example: Two sheets were printed but only one sheet was stapled.
• The first sheet was unexpectedly rotated clockwise while being pulled back, which causes the two
sheets to be misaligned.
Cause
The bushing at the right end of the shift roller has been scraped, which makes it unable for the rollers to
apply pressure, preventing the sheets from being transported to the staple tray correctly.
Solution
Replace the bushing.
1. Remove the internal finisher. (Internal Finisher)
2. Remove the finisher main board cover.
3. Remove the finisher frames. (Finisher Frames)
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