Compaq D51s Troubleshooting Guide - Page 66

Activity, Beeps, Probable Cause, Recommended Action, Hardware Reference, Guide

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Post Error Messages Diagnostic Keyboard LEDS, Front Panel LEDs and Audible Codes Activity Red or Yellow Power LED flashes every 2 seconds (on select models.) Beeps None Flashing Power and Hard Drive Green LEDs. None Probable Cause Power supply overloaded. Unseated riser board. Recommended Action 1. Push in power button. LED should be green. 2. Remove all AC power from computer, wait 30 seconds, then apply power. 3. Remove load from power supply by removing options one at a time until computer runs. 4. Check for damage to system board. 5. Replace system board. 6. Replace power supply. 1. Remove riser board. 2. Wipe connector. 3. Reinstall riser board (see the Hardware Reference Guide for directions on removing the riser board). A-16 Troubleshooting Guide

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A–16
Troubleshooting Guide
Post Error Messages
Red or Yellow
Power LED
flashes every
2 seconds (on
select models.)
None
Power supply
overloaded.
1. Push in power button.
LED should be green.
2. Remove all AC power
from computer, wait
30 seconds, then apply
power.
3. Remove load from power
supply by removing
options one at a time
until computer runs.
4. Check for damage to
system board.
5. Replace system board.
6. Replace power supply.
Flashing Power
and Hard Drive
Green LEDs.
None
Unseated riser board.
1. Remove riser board.
2. Wipe connector.
3. Reinstall riser board (see
the
Hardware Reference
Guide
for directions on
removing the riser board).
Diagnostic Keyboard LEDS, Front Panel LEDs and Audible Codes
Activity
Beeps
Probable Cause
Recommended Action