Service manual

Chapter 5 Troubleshooting
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b. Reset the circuit breaker after reconfiguring the devices. At some installation sites, if the
circuit breakers are locked, only a qualified electrician is allowed to reset the breaker.
D. Verify the power outlets are not faulty by plugging in a known good device, and verifying it
works.
F. Have a qualified electrician verify the circuit breaker for the wall outlet is not defective, and if
necessary, verify the AC power is stable and within its limits.
3. If these checks don't provide any clear solutions, replace the power supply module.
Printer/Datacomm Problems
Use this topic to help solve any Printer/Datacomm problems.
A printer does not print or datacomm devices are not working
If the printer does not work, or the datacomm devices are not working, do the following:
1. Review the Troubleshooting Checklist before you continue.
2. Verify the correct cables have been used, the cables are connected properly, and the cable pins
are not bent.
Check the cable for continuity, or try a known good cable. Refer to the peripheral's manual.
3. Verify the AC power cord is plugged into the power source and the printer.
4. Ensure the printer power switch is on.
5. Verify the AC outlet is working.
If the printer is plugged into a multiple-outlet box, ensure the switch on the outlet box is turned
on.
6. Ensure the printer is on-line.
7. Examine the printer for a paper jam.
8. Run the printer internal self-test (if it has one) to ensure the printer is functional; refer to the
printer’s manual for instructions.
9. Verify you have selected the correct port setting when you configured the printer.
à The printer must be configured correctly for the NetServer and for the application. You may
need to change some switch settings.
à Ensure the printer's port setting is correct, both for the server and the application.
10. Verify the Setup Utility has not been used to disable the I/O ports.
11. Ensure the NetServer’s port is working properly by running another peripheral from that port.
12. If the printer still does not work, remove boards and options (except the hard disk drive) one at a
time to isolate the conflict.
Check the printer for proper operation after you remove each board or option.
13. If an error message appears on the screen, refer to Error Messages and the printer’s manual for
help.
14. If the system was working before you installed the accessory board, remove the board and
restart the system.
15. If the problem persists, replace the accessory board.