Apple g4 Manual Do Utilizador

PowerBook G4 (1GHz/867MHz) Troubleshooting - 13

Ports Symptom Charts

1. Completely shut down, then press the power button to start the computer.

2. Use Software Update in Mac OS X system preferences (or the Software Update 

control panel in Mac OS 9) to verify that the latest software is installed.

3. Use Apple System Profiler to verify that the computer is recognizing the bus.

4. For USB, test ports with an Apple keyboard or mouse.

5. For FireWire, test by connecting another computer in FireWire Target Disk Mode. 

Refer to article 58583: How to Use FireWire Target Disk Mode.

6. Verify that drivers are installed properly for third party, if needed.

7. If in Mac OS 9, boot with Mac OS All extension set.

8. Try a different cable.

9. If self powered make sure that the power supply is connected and device's LED 

indicates that it is getting power.

10. Replace logic board.

 If you are trying to use a serial device with a USB/Serial adapter, check 

with the manufacturer of the adapter for compatibility.

1. Completely shut down, then press the power button to start the computer.

2. Try known-good Apple USB keyboard or mouse to verify the port is working properly.

3. Verify current driver for the device is installed.

4. If a camera, turn on camera after initiating download with camera application.

5. Try the other USB port.

6. Try different USB device on same port.

7. Eliminate chain by plugging in only one peripheral.

8. If in Mac OS 9, select “Mac OS All” in the Extensions Manager control panel and 

restart.

9. If in Mac OS 9, troubleshoot extensions and perform a clean installation of system 

software.

10. Replace logic board.