HP Compaq dx7300 MT Reference Manual page 182

POST Error Messages
POST Diagnostic Front Panel LEDs and Audible Codes (Continued)
Activity
Red Power LED
flashes nine times,
once every
second, followed
by a two second
pause. Beeps stop
after fifth iteration
but LEDs continue
until problem is
solved.
Red Power LED
flashes ten times,
once every
second, followed
by a two second
pause. Beeps stop
after fifth iteration
but LEDs continue
until problem is
solved.
C–12
Beeps Possible Cause
9 System powers on
but is unable to
boot.
10 Bad option card.
43361 1-001
Recommended Action
1. Check that the voltage selector,
located on the rear of the power
supply (some models), is set to the
appropriate voltage. Proper voltage
setting depends on your region.
2. Replace the processor.
3. Replace the system board.
1. Check each option card by removing
the card (one at a time if multiple
cards), then power on the system to
see if fault goes away.
2. Once a bad card is identified, remove
and replace the bad option card.
3. Replace the system board.
Service Reference Guide, dx7730