HP Blade Client manual System board

Getting Started

Diagnostic Front Panel LEDs and Audible Codes

		Possible	Recommended
Activity	Beeps	Cause	Action
Red Power LED	4	Power failure	1.	Open the hood and
flashes four		(power supply is		ensure the 4-wire
times, once every		overloaded).		power supply cable
second, followed				is seated into the
by a two-second				connector on the
pause. The beeps				system board.
continue for five			2.	Check if a device is
iterations, then
				causing the problem
stop. The LED
				by removing ALL
flashes continue
				attached devices
until the problem
				(such as hard,
is resolved.
				diskette, or optical
				drives, and
				expansion cards).
				Power on the system.
				If the system enters
				the POST, then power
				off and replace one
				device at a time and
				repeat this procedure
				until failure occurs.
				Replace the device
				that is causing the
				failure. Continue
				adding devices one
				at a time to ensure all
				devices are
				functioning properly.
			3. Replace the power
				supply.
			4.	Replace the system
				board.

28 www.hp.com Getting Started