Phaser 7500 Printer Service Manual 4-11
General Troubleshooting
Control Panel Troubleshooting
Follow the steps below in order depending on the symptom. Test the printer after
each step to see if the problem has been resolved.
Control Panel is functional, but the printer does not come to a “Ready”
state
1. Disconnect the printer from the network or USB.
2. Power Off the printer.
3. Remove and reseat the Image Processor Board (REP 35.1, page 8-220).
4. Reseat the configuration Card (REP 1.5, page 8-15).
5. Feel the Ffuser to see if it is warm, if not, try replacing the Fuser (REP 7.1,
page 8-67).
6. Refer to “Power Supply Troubleshooting” on page 4-15.
Control Panel LED is On, Control Panel Display is Blank
Will the printer print a job that is sent to it? If yes, start at step #2.
1. Remove and reseat the Image Processor Board (REP 35.1, page 8-220).
2. Check to see if the wiring harness has been disconnected from the Control
Panel. If the connection is OK, replace the Control Panel (REP 19.2,
page 8-211).
3. Replace the Control Panel wiring harness.
4. Replace the Image Processor Board (REP 35.1, page 8-220).
5. Refer to “Power Supply Troubleshooting” on page 4-15.
6. A LVPS Fan failure can also cause the printer to not enable +24 vdc. This can
appear to be a failure of the LVPS. Verify that the Fan turns on when the
printer is turned on.
Printer Hangs with the Xerox Logo Displayed, or reboots
1. Verify that the printer is plugged directly into a wall outlet and that the circuit
is capable of meeting the power specifications for the printer (voltage within
the specified range and less than a 10% drop in voltage when printing). The
printer will not perform reliably when plugged into a surge protector, power
strip or an un-interruptible power supply.
2. Power off the printer, disconnect the network or USB cable and then power the
printer back on. If the printer comes to Ready, print an internal page from the
printer information menu. Then make a print from a laptop connected directly
to the printer; if both of these are successful, the problem is a network issue
and normal network troubleshooting procedures should be used. If the printer
does not come to Ready, try pressing the Cancel button to clear any jobs from
the queue that could be causing the printer to hang. The Cancel button may
have to be pressed multiple times to clear out all jobs. Then try to print
internal pages and from a laptop again.
3. Run "Network Diagnostics" from the Troubleshooting menu: Troubleshooting
-> Service Tools -> Network Troubleshooting. Correct any issues identified in
the test results.
4. Reset NVRAM: Troubleshooting -> Service Tools -> Reset NVRAM.
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