HP Deskpro /M Desktop PC 486/33M Deskpro Personal Computers Service Reference - Page 61
Diagnostic Indicator Lights, L
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E appendix DIAGNOSTIC INDICATOR LIGHTS LED Power Power Power Color Green Green Green Power Power Power None Red Red Power Red Power Red Power and Hard Drive Red Num Lock Caps Lock Scroll Lock Green Green Green LED Activity On 1 blink/second 1 blink/second 4 blinks/second On 1 blink/second 1 blink/2 or more seconds On Flashing Flashing Flashing State/Message Computer on Normal suspend mode Suspend to RAM Computer off CPU thermal shutdown CPU not installed/fetching code ROM error Power supply overloaded Riser board not seated Memory error No video System board failure, prior to video Deskpro Service Reference Guide E-1
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Deskpro Service Reference Guide
E-1
appendix
E
D
IAGNOSTIC
I
NDICATOR
L
IGHTS
LED
Color
LED Activity
State/Message
Power
Green
On
Computer on
Power
Green
1 blink/second
Normal suspend mode
Power
Green
1 blink/second
Suspend to RAM
Power
None
Computer off
Power
Red
4 blinks/second
CPU thermal shutdown
Power
Red
On
CPU not installed/fetching code
Power
Red
1 blink/second
ROM error
Power
Red
1 blink/2 or more
seconds
Power supply overloaded
Power and Hard Drive
Red
On
Riser board not seated
Num Lock
Green
Flashing
Memory error
Caps Lock
Green
Flashing
No video
Scroll Lock
Green
Flashing
System board failure, prior to video