Table A-2Diagnostic Front Panel LEDs and Audible Codes (continued)

Activity

Beeps

Possible Cause

Recommended Action

 

 

 

 

 

Red Power LED flashes four

4

Power failure (power

1.

Open the hood and ensure the 4 or 6-wire

times, once every second,

 

supply is overloaded).

 

power supply cable is seated into the

followed by a two second

 

 

 

connector on the system board.

pause. Beeps stop after fifth

 

 

2.

Check if a device is causing the problem by

iteration but LEDs continue until

 

 

problem is solved.

 

 

 

removing ALL attached devices (such as

 

 

 

 

hard, 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.

Red Power LED flashes five

5

times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved.

Pre-video memory error.

CAUTION: To avoid damage to the DIMMs or the system board, you must unplug the computer power cord before attempting to reseat, install, or remove a DIMM module.

1.Reseat DIMMs.

2.Replace DIMMs one at a time to isolate the faulty module.

3.Replace third-party memory with HP memory.

4.Replace the system board.

Red Power LED flashes six

6

times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved.

Pre-video graphics error.

For systems with a graphics card:

 

1.

Reseat the graphics card.

 

2.

Replace the graphics card.

 

3.

Replace the system board.

For systems with integrated graphics, replace the system board.

Red Power LED flashes seven

7

times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved.

System board failure

Replace the system board.

(ROM detected failure

 

prior to video).

 

Interpreting POST Diagnostic Front Panel LEDs and Audible Codes 107

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HP 6000 Pro manual Activity Beeps Possible Cause Recommended Action
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