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Troubleshooting General/ Power Supply Verification - 23
1. Plug in a known-good power cord into the back of the com-
puter. Do not turn on the computer.
2. Power Mac G4 (AGP or PCI) (see Figure 1):
Connect the black lead of the volt meter to pin 16 of the 20-
pin power supply connector. Connect the red lead of the volt
meter to pin 9 of the power supply connector. The volt meter
should measure approximately +5V.
If you do not get a reading of +5V, re-check the volt meter
connections and measure the voltage again. If voltage is still
not present, replace the power supply; otherwise, go to the
step 4.
If you do measure +5V on pin 9, the power supply is likely OK.
Go to the next step for further verification.