HP dx7200 HP Compaq Business PC dx7200 MT Service Reference Guide, 1st edition - Page 175

Red Power LED, Continued

Page 175 highlights

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. Red Power LED flashes ten times, once every second, followed by a two second pause. System does not power on and LEDs are not flashing. Beeps 9 10 None Possible Cause System powers on but is unable to boot. Bad option card. System unable to power on. Recommended Action 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. Replace the power supply. Replace the system board. Replace the processor. 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. Once a bad card is identified, remove and replace the bad option card. Replace the system board. Press and hold the power button for less than 4 seconds. If the hard drive LED turns green, then: Check that the voltage selector, located on the rear of the power supply, is set to the appropriate voltage. Proper voltage setting depends on your region. Remove the expansion cards one at a time until the LED light on the system board turns on. Replace the system board. OR Press and hold the power button for less than 4 seconds. If the hard drive LED does not turn on green then: Check that the unit is plugged into a working AC outlet. Open hood and check that the power button harness is properly connected to the system board. Check that both power supply cables are properly connected to the system board. Check to see if the LED light on the system board is turned on. If it is turned on, then replace the power button harness. If the LED light on the system board is not turned on, then replace the power supply. Replace the system board. Service Reference Guide, dx7200 390812-001 C-11

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Service Reference Guide, dx7200
390812-001
C–11
POST Error Messages
Red Power LED
flashes nine times,
once every
second, followed
by a two second
pause.
9
System powers on
but is unable to
boot.
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.
Replace the power supply.
Replace the system board.
Replace the processor.
Red Power LED
flashes ten times,
once every
second, followed
by a two second
pause.
10
Bad option card.
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.
Once a bad card is identified, remove
and replace the bad option card.
Replace the system board.
System does not
power on and
LEDs are not
flashing.
None
System unable to
power on.
Press and hold the power button for less
than 4 seconds. If the hard drive LED turns
green, then:
Check that the voltage selector, located on
the rear of the power supply, is set to the
appropriate voltage. Proper voltage
setting depends on your region.
Remove the expansion cards one at a time
until the LED light on the system board
turns on.
Replace the system board.
OR
Press and hold the power button for less
than 4 seconds. If the hard drive LED does
not turn on green then:
Check that the unit is plugged into a
working AC outlet.
Open hood and check that the power
button harness is properly connected to
the system board.
Check that both power supply cables are
properly connected to the system board.
Check to see if the LED light on the system
board is turned on. If it is turned on, then
replace the power button harness.
If the LED light on the system board is not
turned on, then replace the power supply.
Replace the system board.
POST Diagnostic Front Panel LEDs and Audible Codes
(Continued)
Activity
Beeps
Possible Cause
Recommended Action