Q1342-90910 Basic troubleshooting 65
2
Do engine tests
print? (continued)
The printer attempts to
pick up paper three times
and then the motor stops
(no paper feed).
1. The media tray is empty. Place media in
the tray.
2. The printer is dirty. Clean the printer.
3. Replace the pickup roller.
4. Replace the paper pickup assembly
The printer attempts to
pick up paper three
times, and the paper
feeds but comes out
blank.
1. the paper-feed assembly connections
are faulty. Verify that the all paper-feed
assembly connectors to the ECU are firmly
seated.
2. Replace the paper-feed assembly.
The printer attempts to
pick up paper three times
and the laser/scanner
emits a high-pitched
whine, but the motor
does not turn.
1. Verify that the motor connector is firmly
seated.
2. Replace the motor
The printed page is filled
with evenly spaced
horizontal lines, but the
toner can be easily
smeared.
1. Make sure that the media meets
specifications detailed in the Print Media
Guide for the HP LaserJet printer family.
2. A faulty fuser assembly power
connection exists. Verify that the fuser
power connectors are firmly seated.
3. Replace the fuser.
The engine-test page
begins to print, but the
page stops just after
tripping the output sensor
flag.
1. Verify that the output sensor (on the back
of the fuser) connector is firmly seated at
the ECU end.
2. Replace the output sensor
Hint When you attempt to troubleshoot engine-test page problems, it
might be necessary to unplug the printer from the power source
(power off), and then plug it back into the power source (power on)
before printing a subsequent engine-test page. Verify that the printer
was successfully turned on (see verification step 1).
3 The printer motor
rotates for about six
seconds and stops, but
the LED status R
EADY
light does not illuminate.
When the printer is
successfully turned on, the
green Ready status light is
illuminated and the printer is
ready to process a job.
Wire harness connectors
are open.
Harness wires are
pinched or frayed. The
cable pod, connector
assembly, or LED status
panel has failed.
1. Verify that the LED status panel
connector to the connector assembly is
firmly seated.
2. Verify that the connector-assembly-to-
ECU flat ribbon cable is firmly seated (at
the connector assembly end).
3. Replace the cable pod
4. Replace the connector PCB assembly
5. Replace the LED status light panel.
Note The LED lights will not operate if the cable pod is not connected to
the printer.
Table 7. Basic troubleshooting (continued)
# Verification steps Possible problems Solutions
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