Troubleshooting | General/ Power Supply Verification - 22 |
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Power Supply Verification
To start up, the Power Mac G4 logic board requires a “trickle” power of +5V for AGP and PCI models, +28V for Gigabit Ethernet/ Digital Audio models, or +25V for QuickSilver models. If the system fails to start up, follow the procedure outlined below to determine whether the problem is related to the power supply.
Note: To verify the power supply, you need a volt meter.
Verification Procedure
Follow the procedures in the Take Apart chapter to access the power supply.
Important: For this verification procedure when connecting the volt meter leads to specific pins, ensure the power supply cable remains securely plugged into the power supply connector on the logic board.
