Possible Cause Recommended Action
1. Paper surface too rough. Toner migrates to
low spots, leaving higher areas void. Turn EconoMode OFF. Use paper with correct
finish (smoothness) (see
HP LaserJet Printer
Family Paper Specifications Guide
).
2. Printing on wrong side of paper. The label on
the ream of paper indicates which side to print on.
The dif ferent surface properties of some papers
may cause problems if loaded wrong side up.
Turn EconoMode OFF. Check for the arrow on
the paper wrapper. Be sure paper is loaded with
the arrow pointing UP in Tray 1, or arrow
pointing DOWN in Trays 2, 3, and 4.
3. Paper surface is too smooth for proper toner
adhesion. Turn EconoMode OFF. Use paper with correct
finish (smoothness) (see
HP LaserJet Printer
Family Paper Specifications Guide
).
4. Bad transparencies. Transparencies can have
this problem because they are not designed for
proper toner adhesion.
Turn EconoMode OFF. Use Hewlett-Packard
approved transparencies (see
HP LaserJet
Printer Family Paper Specifications Guide
).
5. Bad Transfer Roller. If the Transfer Roller has
finger oils on its surface, is dirty, or is worn-out,
this problem can result.
Turn EconoMode OFF. Clean the Transfer Roller
using a dry, lint-free cloth. DO NOT touch the
Transfer Roller with your fingers. If the problem
persists, replace the Transfer Roller Assembly.
6. Bad Laser/Scanner Assembly. Replace the Laser/Scanner As sembly.
Possible Cause Recommended Action
1. Overloaded paper tray. If the tray is overloaded,
the Pickup Rollers may not pick correctly. Reload proper amount of paper squarely in the
tray. Review paper loading with the customer.
2. Paper guide on the paper tray is incorrectly
adjusted. If the guide is pushing too tightly
against the paper, it may be delayed in being
pulled into the printer. If the guide is too loose it
may cause image skewing.
Verify that the paper guide is adjusted for the
correct paper size and is locked into position.
3. Paper does not meet specs. The surface of the
paper may be too smooth for the Pickup and
Feed Rollers to correctly feed paper into the
printer.
Try a different paper lot (see
HP LaserJet Printer
Family Paper Specifications Guide
).
4. Worn or broken drive gears. If any gear within
the drive train or paper path becomes
excessively worn or dirty, erratic paper
movement can result.
Replace the defective gear or Main Drive
assembly.
5. Worn Pickup, or Registration Rollers. Paper is
not being picked-up consistently. Inspect all paper path rollers, looking for wear,
cracks, or glazing. Replace the worn rollers.