HP ap5000 Maintenance and Service Guide: HP ap5000 All-In-One Point of Sale Sy - Page 80

Appendix D, POST Diagnostic Front Panel LEDs and Audible Codes

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Table D-1 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes eight 8 times, once every second, followed by a two second pause. Invalid ROM based on bad checksum. 1. Reflash the system ROM with the latest BIOS image. 2. Replace the system board. Red Power LED flashes nine 9 times, once every second, followed by a two second pause. System powers on but is unable to boot. 1. Check that the voltage selector, located on the rear of the power supply (some models), is set to the appropriate voltage. Proper voltage setting depends on your region. 2. Unplug the AC power cord from the computer, wait 30 seconds, then plug the power cord back in to the computer. 3. Replace the system board. 4. Replace the processor. 72 Appendix D POST Diagnostic Front Panel LEDs and Audible Codes

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Activity
Beeps
Possible Cause
Recommended Action
Red Power LED flashes eight
times, once every second,
followed by a two second
pause.
8
Invalid ROM based on
bad checksum.
1.
Reflash the system ROM with the latest
BIOS image.
2.
Replace the system board.
Red Power LED flashes nine
times, once every second,
followed by a two second
pause.
9
System powers on but is
unable to boot.
1.
Check that the voltage selector, located on
the rear of the power supply (some
models), is set to the appropriate voltage.
Proper voltage setting depends on your
region.
2.
Unplug the AC power cord from the
computer, wait 30 seconds, then plug the
power cord back in to the computer.
3.
Replace the system board.
4.
Replace the processor.
Table D-1
Diagnostic Front Panel LEDs and Audible Codes (continued)
72
Appendix D
POST Diagnostic Front Panel LEDs and Audible Codes