Digital Equipment DEC 3000 600 AXP, Service Information

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Troubleshooting Tables
Table 5–17 (Cont.) System Problems
Symptom Possible Cause Corrective Action
Faulty boot device. Run diagnostic/utilities for
faulty devices. See Chapter 4.
Monitor
Problems Table 5–18 lists the symptoms, causes, and suggested actions for
monitor problems. If the suggested actions listed do not correct
the problem, then verify that all cable connections are secure.
If cable connections are correct, verify the graphics option by
executing the T TCx command.
Table 5–18 Monitor Problems
Symptoms Possible Cause Corrective Action
There is no monitor
display. Alternate console is
enabled. Verify that the alternate
console switch setting is in
the up position. Verify that the
monitor power LED and system
are on.
The monitor screen is
unstable. Monitor needs
alignment. Refer to the monitor reference
material for adjustment
procedures.
No screen display. Brightness and contrast
controls adjusted
incorrectly. Adjust the monitor brightness
and contrast controls.
Mouse
Problems Table 5–19 lists the symptoms, causes, and suggested actions for
mouse problems. If the suggested actions listed do not correct
the problem, then verify that all cable connections are secure. If
cable connections are correct, then execute the SCC diagnostics.
See Chapter 4 for further information.
5–18