Operation Manual

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Basic troubleshooting 131
4
Is the software
installed correctly?
Software is not installed,
or an error occurred
during software
installation.
Uninstall and then reload the product
software. Make sure you use the correct
installation procedure and the correct port
setting.
5
Does the product
print from the
computer?
Connect the parallel
cable or USB cable to the
product and the
computer. Use a word-
processing application to
send a print job to the
printer.
The cable is not
connected correctly.
Reconnect the cable.
An incorrect printer driver
is selected.
Select the correct printer driver.
Other devices are
connected to the parallel
port.
Disconnect the other devices and try again
to print.
There is an LPT port
driver problem.
Reset the computer port settings. See your
computer user guide for instructions.
The formatter has failed. Replace the formatter
6
If the optional copier/
scanner is installed,
is the copy function
operational?
Place the self-test page
into the media input tray
and copy it to the printer.
The report should feed
smoothly through the
copier/scanner path and
copies should print
without print-quality
problems.
Copier/scanner motor
does not rotate.
1. Run a self-test page, and verify that the
optional copier/scanner is present. (See “To
print a self-test page” on page 159.)
2. Unplug the printer, verify that the copier/
scanner connector is seated in the
formatter, and plug the printer back in.
3. If the printer still has an error, replace the
copier/scanner.
Poor copy quality. 1. If the print quality from the internal tests
was acceptable, but the print quality of the
copies is not, clean the contact image
sensor and the white sheet.
2. If the print defect persists, replace the
copier/scanner assembly.
Media does not move
smoothly through the
copier/scanner path.
1. Clear the copier/scanner path of
obstructions.
2. Check the photosensor to make sure that
it operates correctly.
3. If the problem persists, replace the
copier/scanner assembly.
7
If the optional copier/
scanner is installed,
does it scan to the
computer?
Other devices are
connected to the parallel
port.
Disconnect the other devices, and try to
scan again.
The computer parallel-
port hardware is not
bidirectional.
Check hardware documentation to see if
the port configuration can be changed.
The BIOS settings for the
parallel port are set
incorrectly.
Reset the computer port settings. If the
problem persists, reset the BIOS settings in
CMOS.
Polling is turned off in
HP LaserJet Director or
HP LaserJet Director is
not running.
Start HP LaserJet Director and turn on
polling.
Table 13. Basic troubleshooting (continued)
# Verification steps Possible problems Solutions