Q1860-90918 Chapter 7 Troubleshooting 213
Table 38. Character voids and dropouts
Possible cause Action
Printing on the wrong side of
the paper. The label on the
ream of paper indicates
which side to print on. The
different surface properties
of some papers might cause
problems if the paper is
loaded wrong-side-up.
1. Check for the arrow on the paper wrapper. Make sure that the paper is
loaded to correspond with the arrow pointing up in Tray 1, or pointing down
in other trays.
2. Turn over the stack of paper in the tray. Also try rotating the paper 180°.
3. Check the paper (or other print media) type and quality. Replace the
paper, and advise the customer to use the recommended media and to store
it correctly.
Media surface is too rough. Use paper with the correct finish (smoothness) to meet HP specifications.
Media surface is too smooth
for proper toner adhesion.
Use paper with the correct finish (smoothness) to meet HP specifications.
Bad transparencies.
Transparencies can have
this problem because they
are not designed for proper
toner adhesion.
Use HP-approved transparencies for monochrome LaserJet printers (see
the HP LaserJet Printer Family Paper Specification Guide).
Printer’s operating
environment does not meet
specifications.
Make sure that the printer’s operating environment (and paper storage
environment) meets specifications.
Dirty fuser roller is lifting
part of the image from the
paper.
Process a cleaning page (see page 67). Several pages might be required if
the fuser is very dirty.
Defective or nearly-empty
toner cartridge.
Replace the toner cartridge.
Wrong toner density setting. From the print-quality menu on the control panel, adjust the toner density
setting. Make sure EconoMode is off.
Wrong fuser setting for the
media type.
From the paper-handling menu on the control panel, change the fuser mode
setting or choose another media type from the printer driver.
Bad transfer roller. If the
transfer roller has finger oils
on its surface, is dirty or is
worn out, this problem can
result.
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.
Poor high-voltage contacts
between dc controller and
toner cartridge or transfer
roller.
Inspect the contacts and clean them if they are dirty, or replace them if they
are damaged.
The dc controller is
defective (low transfer
voltage).
Replace the dc controller.
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