User Guide

174 Chapter 6 - Troubleshooting EN
Basic troubleshooting
Table 15. Basic troubleshooting
# Verification steps Possible problems Solutions
1
Is Power On
successful?
When the product is
connected to a grounded
power source,
Hewlett Packard
is displayed with moving
cursors indicating that the
firmware code is loading,
and the printer motor
rotates for approximately
five seconds. When the
firmware is done loading
(30-40 seconds after
power-on),
Scanner
bulb management
is displayed and the scan
head moves back and
forth for 10-15 seconds. If
you lift the lid, you will
see that the scanner bulb
is lit. Near the end of this
time, the ADF motor turns
on for about two seconds.
No power due to failed
power source, cable,
switch, or fuse.
1. Verify that the product is plugged in.
2. Verify that the power cable is functional
and that the power switch is on (220v only).
3. Verify that FU102 on the ECU is not
open.
4. If all of these conditions are correct,
replace the ECU.
Printer motor does not
rotate.
1. Verify that the toner cartridge is present.
2. Verify that the product doors are closed.
3. Verify that paper is loaded in the paper
input tray.
4. Verify that the printer path paper sensors
are functional.
5. Verify that the motor connector J1 is
seated into the ECU.
6. Verify that the motor is correctly mounted
to the product chassis.
7. If all of these conditions are correct,
replace the ECU.
8. If, after replacing the ECU, the printer
motor still does not rotate, replace the
motor.
ADF motor does not
rotate or scanner bulb
does not light.
1. Verify that the scanner connector is
seated in the formatter and scanner
formatter.
2. Check all cabling on the scanner
formatter.
3. If the ADF motor still does not rotate,
replace the ADF.
4. If the scanner bulb still does not light,
replace the scanner assembly.
5. If the problem persists, replace parts one
at a time in the following order until the
problem is resolved: scanner formatter,
formatter, and finally the ECU.