Interpreting Post Diagnostic Front Panel Leds And Audible Codes - HP Rp3000 - Point of Sale System Troubleshooting Manual

Interpreting POST Diagnostic Front Panel LEDs and
Audible Codes
This section covers the front panel LED codes as well as the audible codes that may occur before or
during POST that do not necessarily have an error code or text message associated with them.
WARNING!
system board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure
to disconnect the power cord from the wall outlet and allow the internal system components to cool
before touching.
Look for the LED on the system board. If the LED is illuminated, the system still has power. Power off
the computer and remove the power cord before proceeding.
NOTE: If you see flashing LEDs on a PS/2 keyboard, look for flashing LEDs on the front panel of the
computer and refer to the following table to determine the front panel LED codes.
Recommended actions in the following table are listed in the order in which they should be performed.
Not all diagnostic lights and audible codes are available on all models.
Table A-2 Diagnostic Front Panel LEDs and Audible Codes
Activity
Green Power LED On.
Green Power LED flashes
every two seconds.
Red Power LED flashes two
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 four
times, once every second,
followed by a two second
pause. Beeps stop after fifth
iteration but LEDs continue
until problem is solved.
50 Appendix A POST Error Messages
When the computer is plugged into an AC power source, voltage is always applied to the
Beeps
None
None
2
4
Possible Cause
Computer on.
Computer in Suspend to
RAM mode (some models
only) or normal Suspend
mode.
Processor thermal
protection activated:
A fan may be blocked or
not turning.
OR
The heatsink is not
properly attached to the
processor.
Power failure (power
supply is overloaded).
Recommended Action
None
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 system cooling fan is
running.
2. Open hood, press power button, and see if
the system fan spins. If the system fan is not
spinning, make sure the fan's cable is
plugged onto the system board header.
3. If fan is plugged in, but is not spinning, then
replace heatsink.
4. Contact an authorized reseller or service
provider.
1. Check if a device is causing the problem by
removing ALL attached devices (such as
hard drives, optical drives, and expansion
cards). Power on the system. If the system
enters the POST, then power off and replace
one device at a time and repeat this
procedure until failure occurs. Replace the
device that is causing the failure. Continue
adding devices one at a time to ensure all
devices are functioning properly.
2. Replace the power supply.
3. Replace the system board.
ENWW