HP 200 Series Hardware Support Document page 54

46
Troubleshooting and Diagnostics
Power Supply to 110 Connectorboard Cable Location
9. If the voltage in the cable is defective, the power supply is defective. If it is okay, the
connectorboard is defective.
10. If the power-on LED lights, check for airflow through the fan. If the fan is not running, skip to
step 14.
11. If the fan is running, turn the computer off and back on again, then check the self-test LED
display to see
if self-test is running. If it is not running, refer to the Uve Unit Procedure.
Self-test LEOs Location
12. If self-test is running, review the symptoms and decide whether the problem lies with one or
more add-on cards in the
110 backplane. If so, check fuses F2 to F4 on the 110
connector-
board.