Power and Signal Distribution

A dual-color LED located on the front panel (bezel) is used to indicate system power status. The front panel (bezel) power LED provides a visual indication of key system conditions listed as follows:

 

 

Table 7-5.

 

 

 

Power LED Indications

 

 

 

 

 

 

Power LEDCondition

 

 

Steady green

Normal full-on operation

 

 

Blinks green @ 0.5 Hz

Suspend state (S1) or suspend to RAM (S3)

 

 

Blinks red 2 times @ 1 Hz [1]

Processor thermal shut down. Check air flow, fan

 

 

 

operation, and CPU heat sink.

 

 

 

 

 

 

Blinks red 3 times @ 1 Hz [1]

Processor not installed. Install or reseat CPU.

 

 

Blinks red 4 times @ 1 Hz [1]

Power failure (power supply is overloaded). Check storage

 

 

 

devices, expansion cards and/or system board (CPU

 

 

 

power connector P3).

 

 

 

 

 

 

Blinks red 5 times @ 1 Hz [1]

Pre-video memory error. Incompatible or incorrectly seated

 

 

 

DIMM.

 

 

 

 

 

 

Blinks red 6 times @ 1 Hz [1]

Pre-video graphics error. On system with integrated

 

 

 

graphics, check/replace system board. On system with

 

 

 

graphics card, check/replace graphics card.

 

 

 

 

 

 

Blinks red 7 times @ 1 Hz [1]

PCA failure. Check/replace system board.

 

 

Blinks red 8 times @ 1 Hz [1]

Invalid ROM (checksum error). Reflash ROM using CD or

 

 

 

replace system board.

 

 

 

 

 

 

Blinks red 9 times @ 1 Hz [1]

System powers on but fails to boot. Check power supply,

 

 

 

CPU, system board.

 

 

 

 

 

 

Blinks red 10 times @ 1 Hz [1]

Bad option card.

 

 

No light

System dead. Press and hold power button for less than 4

 

 

 

seconds. If HD LED turns green then check voltage select

 

 

 

switch setting or expansion cards. If no LED light then check

 

 

 

power button/power supply cables to system board or

 

 

 

system board.

 

 

 

 

 

NOTE:

[1]Will be accompanied by the same number of beeps, with 2-second pause between cycles. Beeps stop after 5 cycles.

 

Technical Reference Guide

www.hp.com

7-7