Chapter 7 Power and Signal Distribution
7.2.2.2 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 followed
by 2 second pause
Thermal shut down
Blinks red 3 times @ 1 Hz followed
by 2 second pause
CPU not installed. Reseat CPU.
Blinks red 4 times @ 1 Hz followed
by 2 second pause
Power failure (power supply is overloaded). Check
expansion cards and/or system board.
Blinks red 5 times @ 1 Hz followed
by 2 second pause [1]
Pre-video memory error. Incompatible or incorrectly
seated DIMM.
Blinks red 6 times @ 1 Hz followed
by 2 second pause [1]
Pre-video graphics error. On system with integrated
graphics, check/replace system board. On system with
AGP graphics card, check/replace graphics card.
Blinks red 7 times @ 1 Hz followed
by 2 second pause [1]
PCA failure. Check/replace system board.
Blinks red 8 times @ 1 Hz followed
by 2 second pause [1]
Invalid ROM (checksum error). Reflash ROM using
ROMPaq diskette or replace system board.
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.
hp compaq d330 and d530 Series of Personal Computers
Featuring the Intel Pentium 4 Processor
First Edition - June 2003
7-4
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