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Apple power mac g4 quicksilver User Manual

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    							 Troubleshooting Symptom Charts/Sound -  5 3
    Sound
    No sound from 
    computerÕs internal 
    speaker1 Disconnect any microphones or external speakers.
    2 Verify the volume is set appropriately in the Sound system 
    preference or Sound control panel and mute is not checked. 
    3 Mac OS 9: Start up with all third-party extensions off. 
    Troubleshoot the extensions.
    4 Clear parameter RAM. Hold down Command-Option-P-R 
    during startup until you hear a second startup chime. 
    5 Verify the speaker cable is plugged into the logic board.
    6 Plug headphones or external speakers into the external jack. 
    If the external jack works, replace the internal speaker. If 
    the external jack doesnÕt work, replace the logic board. 
    						
    							 Troubleshooting Symptom Charts/Sound -  5 4
    No sound from Apple 
    Pro Speakers when 
    attached to a Power 
    Mac G4 (Digital 
    Audio/QuickSilvers) 
    computer1 Push on the Apple Pro Speaker jack to make sure it is firmly 
    inserted into the Apple Speaker sound output port. (The Apple 
    Pro Speaker jack has two detents. You should feel them as you 
    push the jack into the sound output port. Giving the jack a 
    slight twist while inserting it into the port may make a 
    better connection.)
    2 Verify the speaker volume and balance are set appropriately 
    in the Sound system preference or Sound control panel and 
    mute is not checked.
    3 Clear parameter RAM. Hold down Command-Option-P-R 
    during startup until you hear a second startup chime.
    4 Reinstall system software.
    5 Replace the Apple Pro Speakers. 
    						
    							 Troubleshooting Symptom Charts/Hard Drive -  5 5
    Hard Drive
    Single internal ATA 
    hard drive does not 
    spin; flashing 
    question mark 
    displays on screen1 Check all cable connections to the hard drive.
    2 Try another power connector on the power cable harness. If 
    the power cable is defective, replace the power supply.
    3 Replace the hard drive. If the problem is resolved, make sure 
    the driver and system software are updated to the most recent 
    versions.
    No internal SCSI 
    drives show up on the 
    desktop 1 Check that the drive shows up in Apple System Profiler. If it 
    does, go to step 2. If it does not, go to step 5.
    2 Update the drivers.
    3 Verify there are no duplicate SCSI device addresses on a 
    single SCSI bus. 
    4 Disconnect external SCSI devices and check for proper 
    termination. 
    5 Reseat the SCSI PCI card and verify the data cable is seated 
    firmly in the card and drives.
    6 Check internal SCSI termination. Internal drives should not 
    be terminated; the SCSI cable should have termination at the 
    end.
    7 If more than one SCSI device is on the SCSI chain, remove one 
    device at a time and retest. Replace the bad drive.
    8 Replace the internal SCSI data cable.
    9 Replace the SCSI PCI card. 
    1 0 Try another connector on the power cable harness. If there is 
    a bad connector on the harness, replace the power supply.
    No external SCSI 
    drive shows up on 
    desktop1 Verify there are no duplicate SCSI device addresses.
    2 Verify the total cable length does not exceed the maximum 
    total cable length for the SCSI card. See Knowledge Base 
    article 58204.
    3 Reseat the SCSI cable going to the SCSI card.
    4 Replace the terminator on the external SCSI device.
    5 Reseat the SCSI card.
    6 Replace the SCSI card.
    7 Replace the SCSI drive cables one at a time.
    8 Disconnect the external SCSI chain. Using known-good cables, 
    reattach devices one at a time. 
    						
    							 Troubleshooting Symptom Charts/ CD/DVD Drives -  5 6
    CD/DVD Drives
    CD/DVD drive tray 
    wonÕt open 1 Reseat the drive data and power cables on the back of the CD/
    DVD drive. 
    2 Verify the CD/DVD drive bezel is properly seated. 
    3 Reseat the drive data cable on the logic board. 
    4 Try using a known-good disc.
    5 Replace the CD/DVD drive.
    CD/DVD drive icon 
    does not appear on the 
    desktop1 Check to see if the CD/DVD drive shows up in Apple System 
    Profiler. If it does, go to step 2. If the drive does not show up 
    in Apple System Profiler, go to step 7.
    2 Try using a known-good disc.
    3 If there is a disc stuck in the tray, eject it by restarting the 
    computer while holding down the mouse button. Or eject the 
    disc using the manual eject hole; refer to the userÕs manual. 
    For Power Mac G4 (QuickSilvers), see Knowledge Base 
    article 88215.
    4 Turn off all third-party extensions.
    5 Verify the firmware is the most recent version for that 
    drive. Check Software Downloads for any current update.
    6 Reinstall system software.
    7 Reseat the drive data and power cables on the back of the CD/
    DVD drive.
    8 Try another connector on the power cable harness. If there is 
    a bad connector on the harness, replace the power supply.
    9 Replace the CD/DVD drive.
    1 0 Replace the logic board only if other devices on the bus do not 
    work. 
    						
    							 Troubleshooting Symptom Charts/Zip Drive -  5 7
    Zip Drive
    Zip drive does not 
    show up on desktop1 Check that the Zip drive shows up in Apple System Profiler. 
    If it does, go to step 2. If it does not, go to step 6.
    2 Mac OS 9: Make sure the driver is turned on in Extensions 
    Manager. 
    3 Replace the Zip disk with a known-good disk.
    4 Check that the Zip drive shows up in Apple System Profiler 
    as ID = 1 (slave). If it does not, check the connector. There 
    should be no jumper on the 6-pin device settingÕs connector.
    5 Reinstall system software.
    6 Reseat the drive data and power cables on the back of Zip 
    drive.
    7 Replace the Zip drive.
    8 Replace the drive data cable.
    9 Try another connector on the power cable harness. If there is 
    a bad connector on the harness, replace the power supply. 
    						
    							 Troubleshooting Symptom Charts/Zip Drive -  5 8
    Zip disk ejects 
    immediately after 
    being inserted1 Replace the Zip disk with a known-good disk.
    2 Reseat the drive data and power cables on the back of the Zip 
    drive. 
    3 Check that the Zip drive shows up in Apple System Profiler 
    as ID = 1 (slave). If it does not, check the connector. There 
    should be no jumper on the 6-pin device settingÕs connector.
    4 Reinstall system software.
    5 Replace the drive data cable.
    6 Replace the Zip drive.
    Zip disk does not eject 1 Use the manual eject hole on the Zip drive to eject the stuck 
    disk. Examine the disk for damage. Restart the computer, and 
    hold down the manual eject button throughout the entire 
    startup process. Once the system has started up, insert a 
    known-good Zip disk and try ejecting it by dragging the disk 
    icon to the trash can.
    2 Reseat the Zip drive bezel so the bezel slot aligns correctly.
    3 Reinstall system software.
    4 Replace the Zip drive.
    5 Replace the drive data cable. 
    Zip drive runs 
    continuously1 Replace the Zip disk with a known-good disk.
    2 Replace the Zip drive.
    3 Replace the drive data cable. 
    						
    							 Troubleshooting Symptom Charts/USB Devices -  5 9
    USB Devices                                                                                    
    At startup, cursor 
    does not move with the 
    Apple mouse1 Verify that mouse and keyboard connections are secure.
    2 Mechanical mouse: Inspect the inside of the mouse for buildup 
    of dirt or other contaminants. Clean the mouse if necessary. 
    See Knowledge Base article 6491.
    3 If the mouse is connected to the keyboard, connect the mouse 
    to one of the USB ports on the I/O panel instead. If the mouse 
    works, replace the keyboard. 
    4 Replace the mouse.
    5 If the mouse is connected to one of the USB ports on the I/O 
    panel, switch to the other USB port. If the mouse operates 
    correctly, the first port was bad. Replace the logic board. 
    Note: You can also use Apple System Profiler to verify USB 
    ports. 
    						
    							 Troubleshooting Symptom Charts/USB Devices -  6 0
    No response to any 
    key on keyboard1 Verify that keyboard and mouse connections are secure.
    2 Remove all USB devices, except the keyboard and mouse. If 
    the keyboard operates correctly, troubleshoot the other USB 
    devices.
    3 Switch the keyboard to a different USB port. If the keyboard 
    operates correctly, the first port was bad. Replace the logic 
    board. 
    Note: You can also use Apple System Profiler to verify 
    USB ports.
    4 Mac OS 9: Start up with extensions off. If the problem is 
    resolved, troubleshoot the extensions.
    5 Mac OS X: Relaunch Finder.
    6 Start up from the system installation CD or system restore 
    CD that came with the computer. If the keyboard operates, 
    reinstall system software.
    7 Replace the keyboard.
    8 Replace the logic board.  
    						
    							 Troubleshooting Symptom Charts/USB Devices -  6 1
    USB printer does not 
    operate1 Verify that connections to the printer and computer are 
    secure.
    2 Switch the printer to a different USB port. If the printer 
    operates correctly, the first port was bad. Replace the logic 
    board. 
    Note: You can also use Apple System Profiler to verify 
    USB ports.
    3 Verify the correct versions of the system software and 
    printer driver are installed.
    4 Mac OS X: Use Print Center to verify that you have the 
    correct printer selected. Mac OS 9: Use Chooser to verify that 
    you have the correct printer selected.
    5 If the printer is connected to a third-party USB hub, switch 
    it to one of the USB ports on the I/O panel. If the printer 
    operates, the hub is bad.
    6 Mac OS 9: Turn off unnecessary extensions.
    7 De-install and then re-install the print driver.
    8 Replace the printer interface cable.
    9 Replace the printer.
    1 0 Replace the logic board. 
    						
    							 Troubleshooting Symptom Charts/FireWire Devices -  6 2
    FireWire Devices
    No external FireWire 
    device icon appears on 
    the desktop1 Verify that the FireWire device is turned on and the FireWire 
    cable is securely connected to the device and the computer.
    2 If the device requires external power, make sure it is plugged 
    in.
    3 Check that the FireWire device is listed in Apple System 
    Profiler. If it is, go to step 4. If it is not, go to step 5.
    4 Check the FireWire device documentation to see if additional 
    drivers are required. If so, make sure the drivers are 
    installed.
    5 Check for broken pins, dust, dirt, or wear on both FireWire 
    cable connectors, the device FireWire port, and the computer 
    FireWire port. 
    6 Reconnect the FireWire device to another FireWire port on 
    the computer. If the computer has a bad FireWire port, 
    replace the logic board.
    7 Replace the FireWire cable.
    8 Replace the FireWire device.
    9 Replace the logic board. 
    						
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