Power and Signal Distribution

Power LED Indications

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:

Power LED

Condition

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 voltage

 

selector (if applicable), stroage devices, expansion cards

 

and/or system board.

 

 

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

 

ROMPaq diskette 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.

Wake Up Events

The PS On signal can be activated with a power “wake-up” of the system due to the occurrence of a magic packet, serial port ring, or PCI power management (PME) event. These events can be individually enabled through the Setup utility to wake up the system from a sleep (low power) state.

✎Wake-up functionality requires that certain circuits receive auxiliary power while the system is turned off. The system unit must be plugged into a live AC outlet for wake up events to function. Using an AC power strip to control system unit power will disable wake-up event functionality.

Technical Reference Guide

361834-002

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