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To diagnose the cause of wrinkled or folded paper, use the Print/Stop Test in the
Diagnostics test menu. Adjust the stop time so the paper stops before it enters the fuser.
Open the front door. If paper is wrinkled at this stage, use
Table 7-10. Causes for wrinkled or
folded paper (paper path entrance), Table 7-10. Causes for wrinkled or folded paper (paper
path entrance), to diagnose the problem. If paper is not wrinkled at this stage, use Table
7-11. Causes for wrinkled or folded paper (paper path exit), Table 7-11. Causes for wrinkled
or folded paper (paper path exit), to diagnose the problem.
Table 7-10. Causes for wrinkled or folded paper (paper path entrance)
Cause Solution
Registration shutter is defective. Make sure the registration shutter is clean and
moves smoothly. If the registration shutter is worn
or damaged, replace the paper pickup/feed
assembly.
Feed roller or registration roller is dirty or defective. Clean the rollers or replace the paper pickup/feed
assembly as required.
Paper path has foreign substances or dirt. Remove any foreign substances or dirt from the
paper path. If the paper pickup/feed assembly is
damaged, replace the paper pickup/feed assembly.
Table 7-11. Causes for wrinkled or folded paper (paper path exit)
Cause Solution
Fuser inlet guide is dirty. Clean the fuser inlet guide.
Fuser pressure roller is dirty or damaged. Clean the pressure roller. If the pressure roller is
damaged, replace the fuser.
Fuser sleeve is dirty or damaged. Clean the fuser sleeve. If the fuser sleeve is
damaged, replace the fuser.
Fuser delivery roller is dirty. Clean the fuser delivery roller.
Paper is skewed
Table 7-12. Causes for skewed paper
Cause Solution
Paper dust or dirt has accumulated in the Tray 2
feed roller or registration roller.
Clean the rollers.
Cassette feed roller and registration roller are worn
irregularly.
Replace the feed roller or the pickup/feed
assembly.
Registration shutter is defective. Make sure the registration shutter moves
smoothly, its springs are in place, and it is clean. If
the registration shutter is damaged, replace the
pickup/feed assembly.
368 Chapter 7 Troubleshooting ENWW