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162 Troubleshooting
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The page is
completely black.
The toner cartridge was improperly
installed.
The toner cartridge is defective.
Discontinuities exist in the high-voltage
contact points.
There is a problem in the ECU or the
laser/scanner.
Remove the cartridge and reinstall it.
Replace the toner cartridge.
Perform the “High-voltage power supply
check,” which is discussed later in this
chapter.
Follow the steps in “Basic troubleshooting”
to isolate the problem. Replace the ECU
or the laser/scanner, as needed.
Characters are
only partially
printed (also
referred to as
dropouts).
A single sheet of paper is defective.
The print density needs to be adjusted.
The moisture content of the paper is
inconsistent or the paper has moist or wet
spots on the surface.
The paper was damaged by inconsistent
manufacturing processes.
A “draft mode” or “economy mode” is
selected in the software.
Try reprinting the job.
Adjust the print density from the control
panel.
Make sure that the media meets
specifications detailed in HP’s media
specifications guide.
Make sure that the media meets
specifications detailed in HP’s media
specifications guide.
Try a “normal” or “best” setting.
The bottom of the
printed page is
blank or part of a
graphic’s image is
cut off.
The page is too complex. (There is not
enough memory to process the page.)
Set the resolution to 300 dpi through your
software or printer driver. See the online
help for printer driver issues.
Problem Cause Solution