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IV. PAPER TRANSPORT TROUBLESHOOTING
If the factor of the malfunction is identified as “paper transport troubleshooting” by the mal-
function diagnosis flowchart (Figure 4-1-1), execute the followings and mend the defect.
IV-1. Multiple Paper Feed
<Possible causes>
1. If this problem occurs with the multi-purpose tray, perform step 4 and subsequent steps.
2. The separation roller is worn or deformed.
Action: Replace the separation roller together with the feed roller.
3. The spring is defective.
Action: Replace the spring that pulls the separation roller.
4. The separation pad surface is worn.
Action: Replace the separation pad together with the multi-purpose tray pick-up roller.
5. The spring is defective.
Action: Replace the spring of the separation pad.
IV-2. Wrinkles/folded leading edge
<Possible causes>
1. Curled paper
Action: A devise the user to straighten the paper.
2. After executing a test print, open the top cover before the paper enters the fixing unit. If the
paper is wrinkled at this point, go to step 6).
3. The fixing entry guide is dirty.
Action: Clean the guide.
4. The lower fixing roller is dirty.
Action: Clean the lower fixing roller.
5. The fixing roller is deformed or worn.
Action: Replace the worn or deformed roller.
6. Paper dust or dirt is accumulated on the feed roller, registration roller, or feed guide.
Action: Clean the dirty areas.
7. Scarred or dirty feed guide
Action: Check the paper path. Replace any scarred or deformed guide(s).
IV-3. Skew
<Possible causes>
1. Paper dust or dirt is adhering to the registration rollers or the feed guide.
Action: Remove the paper dust or dirt.
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CHAPTER 4