Problems and Solutions
Problem | Symptom | Solution |
No power | Power lamp on computer does |
| not light. |
Power supply | Any of the following conditions |
malfunction | can occur: |
| Front panel lamps out, diskette |
| and/or hard drives do not spin, |
| monitor blank, interface ports not |
| working, and keyboard lamp out |
| and/or cannot input from the |
| keyboard. |
Operating system does | Intermittent beeping at power on. |
not boot | Computer beeps more than once |
| and is unable to complete |
| bootup. |
“Invalid Configuration” message displayed.
Check that the power cord is plugged into the AC connector on the computer.
Check that the other end of the cord is plugged into a live properly grounded AC power outlet.
Check cable connections between the power supply and the system board.
Systematically eliminate possible shorted boards by removing cables and expansion boards.
Check the +5 and +12 power supply voltages (see Appendix B, “Connector Pin Assignments”). Measure voltages with the system board installed.
Replace the power supply.
Replace the system board.
Perform the first four checks in the solution for the “No power” problem in this table.
Check power supply voltages. Voltages should be measured with a load on them (system board plugged in). See Appendix B, “Connector Pin Assignments.”
Replace the power supply.
Check system configuration (see Section 2, “Setup Utility”).
Check all jumper settings and verify that drives are enabled (see Section 2, “Setup Utility” and Appendix C, “System Resources”).
Reseat DIMMs and option boards in their connectors. Inspect system board for dropped objects.
Remove option boards and reboot.
Replace system board.
Press F2 to run Setup and correct the parameters.
Replace the CMOS battery if the date and time must be set each time the computer is powered on.
