HP Microtower PC dx2200 Diagnostic Front Panel LEDs and Audible Codes (Continued)

Troubleshooting Without Diagnostics

Diagnostic Front Panel LEDs and Audible Codes (Continued)

Activity	Beeps	Possible Cause	Recommended Action
Power LED flashes	None	Pre-video graphics	For systems with a graphics card:
six times, once		error.	1.	Reseat the graphics card. Power on
every second,
				the system.
followed by a two
			2.	Replace the graphics card.
second pause.
			3.	Replace the system board.
			For systems with integrated graphics,
			replace the system board.
Power LED flashes	None	Invalid ROM	1.	Reflash the ROM using a ROMPaq
eight times, once		based on bad		diskette.
every second,		checksum.	2.	Replace the system board.
followed by a two
second pause.
System does not	None	System unable to	Press and hold the power button for less
power on and LEDs		power on.	than 4 seconds. If the hard drive LED turns
are not flashing.			green, then:
			1.	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.
			2.	Remove the expansion cards one at a
				time until the LED light on the system
				board turns on.
			3.	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:
			1.	Check that the unit is plugged into a
				working AC outlet.
			2.	Open hood and check that the power
				button harness is properly connected
				to the system board.
			3.	Check that both power supply cables
				are properly connected to the system
				board.
			4.	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.
			5.	If the LED light on the system board is
				not turned on, then replace the power
				supply.
			6.	Replace the system board.

Service Reference Guide, dx2200 MT 415606-001 E–27