5-6
Troubleshooting
OG
L
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Duplex Printing Problems
Voids or vertical voids
• Moisture content is too high.
- Replace with newly unwrapped paper.
• Paper does not meet specification.
- See
“Media Guidelines” on page C-1
.
• Creased or wrinkled paper is loaded in the tray.
- Removed damaged paper or replace with newly unwrapped paper.
• Print density is too high.
- Adjust print density. See
“Print Density Adjustment” on page 6-64
• Host application setting is incorrect.
- Correct the application settings.
• There may be condensation inside the printer.
- Turn on the printer power and leave it for 30-60 minutes, then start
printing.
• The drum unit may be damaged.
- Replace the drum unit.
The tip or back end of
paper is dirty
• Clean the NIP Guide and TR guide in the Conveyance Belt area.
• Clean the Finisher Exit Roller.
Part of solid printing is
scraped
• Print Density is too high
- Adjust print density. See
“Print Density Adjustment” on page 6-64
Printing is too dark
• Print Density is too high
- Adjust print density. See
“Print Density Adjustment” on page 6-64
• Print Density is too high after initial power up.
Adjust print density lower. After several thousand pages are printed,
return the print density to the higher setting.
If this happens
Try this
Duplex pages print upside
down
Change the Duplex print option that specifies how the second image is
placed relative to the first image.
Paper Jam
• Confirm paper weight setting in the OCP.
• Use paper (grain long) with fibers that run in parallel with the paper feed
direction.
If this happens
Try this