DEC DECstation 5000 Model 100 Series, Руководство по обслуживанию

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Troubleshooting Process
Troubleshoot the system as follows:
1.
Make sure there is power to the system unit. If the system
unit has no power, refer to ‘‘Power Supply’’ in Chapter 5 to
troubleshoot.
2.
Turn on the system and check the results of the power-up
self-test.
If the power-up self-test displays an error message on
the monitor, refer to Table 4-1 to troubleshoot.
If the power-up self-test does not complete, refer to
Table 4-2 to troubleshoot.
If the monitor has no display, refer to the TURBOchannel
Maintenance Guide to troubleshoot.
3.
Run the system test. Type test and press Return. The
system test runs a comprehensive check of the system
hardware. If this test returns an error code, refer to
Table 4-1 to troubleshoot.
4.
If none of these tests reports a problem, check the memory
modules. Refer to ‘‘Memory Modules’’ in Chapter 5 to
troubleshoot.
5.
If the system still reports no errors, but the problem
persists, examine the error logs. Refer to ‘‘Using Error Logs
to Troubleshoot’’ later in this chapter to troubleshoot.
6.
If the system reports no errors, but the printer, modem, or
alternate terminal does not operate properly, perform an
external loopback serial line test. Refer to ‘‘Troubleshooting
When a Printer, Modem, or Alternate Terminal Does Not
Operate Properly’’ later in this chapter to troubleshoot.
7.
If the system fails to boot, use any console error messages
that appear on the monitor to troubleshoot. Refer to
Appendix E to interpret console error messages.
4–2 Identifying Failed FRUs