HP Dc7900 Service Reference Guide: HP Compaq dc7900 Business PC - Page 248
Table C-2, Activity, Beeps, Possible Cause, Recommended Action
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Table C-2 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action 4. Check to see if the 5V_aux light on the system board is turned on. If it is turned on, then replace the power button harness. If the problem persists, replace the system board. 5. If the 5V_aux light on the system board is not turned on, remove the expansion cards one at a time until the 5V_aux light on the system board turns on. It the problem persists, replace the power supply. 236 Appendix C POST Error Messages
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Activity
Beeps
Possible Cause
Recommended Action
4.
Check to see if the 5V_aux light on the
system board is turned on. If it is turned on,
then replace the power button harness. If the
problem persists, replace the system board.
5.
If the 5V_aux light on the system board is not
turned on, remove the expansion cards one
at a time until the 5V_aux light on the system
board turns on. It the problem persists,
replace the power supply.
Table C-2
Diagnostic Front Panel LEDs and Audible Codes (continued)
236
Appendix C
POST Error Messages