Video Output Failure; Disk Or Cd-Rom Drive Failure - Sun Microsystems Enterprise 250 Owner's Manual

a. Remove optional PCI cards.
b. Remove optional DIMMs.
c. Repeat POST to determine if any of these modules caused the failure.
d. If POST still fails, then replace the main logic board.

Video Output Failure

Symptom
No video at the system monitor.
Action
1. Check that the power cord is connected to the monitor and to the wall outlet.
2. Verify with a volt-ohmmeter that the wall outlet is supplying AC power.
3. Verify that the video cable connection is secure between the monitor and the
video output port.
Use a volt-ohmmeter to perform the continuity test on the video cable.
4. If the cables and their connections are okay, then troubleshoot the monitor and
the graphics card.

Disk or CD-ROM Drive Failure

Symptom
A disk drive read, write, or parity error is reported by the operating system or a
software application.
A CD-ROM drive read error or parity error is reported by the operating system or a
software application.
Sun Enterprise 250 Server Owner's Guide ♦ Revision A, June 1998
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Leave only the four DIMMs in Bank A.