HP 200 Series Hardware Support Document page 53

Troubleshooting and Diagnostics 45
Fuse Fl Location
5.. If fuse Fl
is open, replace it. Then remove the rear panel and pull the processor board loose.
Then turn the computer on for a few moments and recheck the fuse.
6. If the new fuse is open, the 110 connectorboard is defective. If it is okay, the processor board
is defective.
7. If fuse
Fl
is good, loosen or disconnect the power-on LED plug fronn the lIO connectorboard
and check the de voltage across the terminal. If it is about 5V, the LED is defective.
Power-on LED Terminal Location
8. Turn the computer off and locate the cable between the 110 connectorboard and the power
supply (cable J2). Disconnect it from the connectorboard and check the 5V supply line (pin
1 ).