HP ap5000 All-in-One Point of Sale System User Manual download pdf (Page 78)

D POST Diagnostic Front Panel LEDs

and Audible Codes

Many pre-video conditions on the HP ap5000 POS System can easiliy be diagnosed through various

beep and LED codes. The beep and LED blinks repeat for five cycles. Thereafter, only the LED blinks

will continue repeating.

WARNING! When the computer is plugged into an AC power source, voltage is always applied to

the 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.

Table D-1 Diagnostic Front Panel LEDs and Audible Codes

Activity Beeps Possible Cause Recommended Action

Green Power LED On. None Computer on. None

Red Power LED flashes two

times, once every second,

followed by a two second

pause.

2 Processor thermal

protection activated:

A fan may be blocked or

not turning.

The heatsink/fan

assembly is not properly

attached to the processor.

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.

3. If fan is plugged in, but is not spinning, then

replace heatsink/fan assembly.

4. Contact an authorized reseller or service

provider.

Red Power LED flashes three

times, once every second,

followed by a two second

pause.

3 Processor not installed

(not an indicator of bad

processor).

1. Check to see that the processor is present.

2. Reseat the processor.

70 Appendix D POST Diagnostic Front Panel LEDs and Audible Codes

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HP ap5000 All-in-One Point of Sale System User Manual Page 78

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