Apple powermac g3 blue.white Service Manual

 

 Troubleshooting

Symptom Charts/System - 32

 

the Logic Board” earlier in this chapter for instructions.)

7 Replace the logic board if the problem persists.

Fan on power supply 

is running, but no 

startup tone, screen 

is black, drive not 

accessed at startup, 

and no LED on front of 

system

1 Verify power supply voltage switch is set correctly for your 

region (see “Voltage Switch” in Basics chapter for more 

information).

2 Check jumper block configuration at J25. Make sure jumper 

block is correct color for processor type installed (see 

“Jumper Location J25” earlier in this chapter for more 

information) and that it is installed in the correct direction.

3 Reseat processor module. Make sure locking arm is in down 

position.