HP LaserJet 4v/mv Service Manual - Page 139

Preliminary Troubleshooting

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7 Troubleshooting Preliminary Troubleshooting Step Description Corrective Action 1. Disconnect printer from network (if n/a applicable). 2. Ensure that toner cartridge is n/a installed, front door is closed, and AC power is applied. 3. Verify power distribution by Troubleshoot power supply listening to fans, Main Motor, and distribution system. Laser/Scanner Motor. • Check all connectors • Check CB101 in power supply unit • Check F101 in power supply unit 4. Check for control panel messages. Refer to "Printer Message Troubleshooting" later in this chapter. 5. Perform Engine Test. If there is an image problem, see "Image Formation Troubleshooting" later in this chapter. If no page is printed, troubleshoot as a DC Controller problem. 6. Perform Control Panel Self Test. If there is an image problem, refer to "Image Formation Troubleshooting" later in this chapter. If no page is printed, troubleshoot as a Formatter problem. 7. Verify proper software drivers have Install drivers. been installed. 8. Connect printer to network (if applicable) and verify network operation. Contact network administrator for assistance. Troubleshooting 7-3

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Preliminary Troubleshooting
Step
Description
Corrective Action
1.
Disconnect printer from network (if
applicable).
n/a
2.
Ensure that toner cartridge is
installed, front door is closed, and
AC power is applied.
n/a
3.
Verify power distribution by
listening to fans, Main Motor, and
Laser/Scanner Motor.
Troubleshoot power supply
distribution system.
•
Check all connectors
•
Check CB101 in power
supply unit
•
Check F101 in power
supply unit
4.
Check for control panel messages.
Refer to “Printer Message
Troubleshooting” later in this
chapter.
5.
Perform Engine Test.
If there is an image problem, see
“Image Formation Troubleshooting”
later in this chapter.
If no page is printed, troubleshoot
as a DC Controller problem.
6.
Perform Control Panel Self Test.
If there is an image problem, refer
to “Image Formation
Troubleshooting” later in this
chapter.
If no page is printed, troubleshoot
as a Formatter problem.
7.
Verify proper software drivers have
been installed.
Install drivers.
8.
Connect printer to network (if
applicable) and verify network
operation.
Contact network administrator for
assistance.
7
Troubleshooting
Troubleshooting 7-3