HP dx2810 - Microtower PC Service & Reference Manual page 154
Service reference guide: hp compaq dx2810 and dx2818 business pc and dx2810 small form factor business pc
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Also See for dx2810 - Microtower PC:
- Hardware reference manual (57 pages) ,
- Quickspecs (39 pages) ,
- Product end-of-life disassembly instructions (8 pages)
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Table C-1
Diagnostic Front Panel LEDs and Audible Codes (continued)
Activity
Green Power LED
flashes every two
seconds.
CPU fan is weak (RPM <
1000) or not turning. A
warning message is
displayed along with a
series of long beeps for
five seconds, then the
system shuts down.
Red Power LED flashes
five times, once every
second, followed by a
two second pause.
Beeps stop after fifth
iteration but LEDs
continue until problem is
solved.
Red Power LED flashes
six times, once every
second, followed by a
two second pause.
Beeps stop after fifth
iteration but LEDs
continue until problem is
solved.
144 Appendix C Troubleshooting
Beeps
Possible Cause
None
Computer in
Suspend to RAM
mode (some models
only) or normal
Suspend mode.
2
Processor thermal
protection activated:
A fan may be blocked
or not turning.
OR
The heatsink/fan
assembly is not
properly attached to
the processor.
5
Pre-video memory
error.
6
Pre-video graphics
error.
Recommended Action
None required. Press any key or move
the mouse to wake the computer.
1.
Ensure that the computer air vents
are not blocked and the processor
cooling fan is running.
2.
Open hood, press power button,
and see if the processor fan spins.
If the processor fan is not spinning,
make sure the fan's cable is
plugged onto the system board
header. Ensure the fan is fully/
properly seated and installed.
3.
If fan is plugged in and seated
properly, but is not spinning, then
replace processor fan.
4.
Reseat processor heatsink and
verify that the fan assembly is
properly attached.
5.
Contact an authorized reseller or
service provider.
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.
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.
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