Procedure Jxo
1. Press and hold the door latch, and then open the AirPort shield door. 2. With the AirPort shield door open, pull the tab to disconnect the ATA ribbon cable connector from the hard drive. 3. Disconnect the power cable connector from the hard drive. You might need to use a flat-blade screwdriver to pry up and loosen the connector. 4. Push in the core latch, and reposition the computer chassis so you can access the heatsink and hard drive. 5. Loosen, but do not remove, the three captive screws...
Procedure Jfp
1. Lift up the top plate and disconnect the keyed connector J1 on the logic board . 2. Disconnect the cable from the power board. 3. Connect the replacement cable to the power board on the top plate. 4. Connect the other end of the replacement cable to the J1 connector on the logic board. Warning To prevent damage to the power board, ensure the keyed connector fits into the J1 connector as shown. 5. Reassemble and test the computer. Warning Never turn on the computer unless all of its internal...
Video
A monitor with an Apple Display Connector displays no video when connected to a Power Mac G4 Cube computer however, if you connect a monitor with a VGA-style connector video appears on the display 1. Connect a known-good monitor with an Apple Display Connector ADC . 2. Verify the monitor with an ADC has a known-good power source. 3. Make sure the display cable from the monitor is securely connected to the video card. 4. Make sure the video riser card and the video card are properly seated in...
Procedure Sht
1. Place the core on its side so the core latch is in front of you. 2. Remove the two screws at the modem board. The modem screws are shorter than the video card screws. 3. Holding the modem board by the edges, rock and tilt it up to release it from its connector. Then move it away from the chassis panel to release the modem port. 4. Holding the replacement modem board by the edges, tilt the board so the modem port fits into the opening in the chassis. 5. With the modem board aligned over the...
Procedure Gmb
1. Place the computer core on its side so the logic board is on top and the memory card slots are on your left. Using a Torx T10 screwdriver, remove the two screws at the end of the board. 2. Locate the two screws in the uppermost left corner of the board. Remove the screw farthest from the corner. 3. At the uppermost right corner of the board, remove the Torx T10 dome-headed screw near the Ethernet port connector. 4. Remove the three TorxHO spring standoff screws near the center of the board....
Procedure Qma
Note The procedure is the same whether the optical drive is a CD-RW or a DVD-ROM drive. 1. Grasp the top of the side panel, and slide it up and away to clear the four tabs on the inner side of the panel. Move the AirPort Card antenna cable out from under the tape. If an AirPort Card is installed, disconnect the antenna cable from the AirPort Card. Press in on the latch to open the door 3. Using a magnetized screwdriver, remove the two screws from the side of the drive. Repeat on the other side....
Procedure Dpu
1. Disconnect the top plate cable from the power button board. 2. Remove the two screws from the board. 3. Lift the board off of the top plate. 4. Make sure you place the proximity switch plate over the replacement power button board before installing the board on the top plate. 5. Reassemble and test the computer. Warning Never turn on the computer unless all of its internal and external parts are in place and it is closed. Operating the computer when it is open or missing parts can damage the...
Procedure Yfy
1. Place the computer core on its base so the heatsink faces up. 2. Grasp the first support bar, and pull it up to release it from the chassis. Repeat for the other three support bars. 3. Install the replacement support bars and press down until they click into place. 4. Reassemble and test the computer. Warning Never turn on the computer unless all of its internal and external parts are in place and it is closed. Operating the computer when it is open or missing parts can damage the computer...
Startup
Flashing question mark appears on the desktop 1. Start up the computer from the Software Restore disc to verify that the hard disk icon can be seen on the desktop. 2. If the disk icon is visible on the desktop, follow these steps Update the driver with Drive Setup. Check the disk with Disk First Aid. Check for Mac OS software on the startup disk. Remove extra System Folders. Perform a clean installation of the Mac OS using the Software Restore disc. Back up all the data, and reinitialize the...
DVD Player
When Apple DVD Player is opened, an alert box appears with this message Apple DVD Player can not open because the required hardware was not found 1. Quit all open applications and reopen Apple DVD Player. 2. Restart the computer and reopen Apple DVD Player. 3. Using Extensions Manager, select Mac OS 9.x All and restart. 4. If the symptom persists, perform a clean installation of the Mac OS and try again. 5. Ensure all the connections to the DVD-ROM drive are secure. Apple DVD Player cannot open...
Mac Cube Logic Board Repair
4. Remove the three Torx T10 spring standoff screws near the center of the board. Replacement Note Reinstall the gold-colored standoff screw in the screw hole closest to the middle large chip. 5. Insert a jeweler's flat-blade screwdriver between the heat spreader and heatsink and gently pry up the heat spreader. 6. Holding the inner mesh shield in place, gently slide out the logic board until the ports clear the I O panel. Replacement Note Make sure the notches on the end of the logic board...
Procedure Lpk
1. Place the computer core on its base so the heatsink faces up. Remove the screw that attaches the NMI switch board to the chassis. 2. Push in on the plastic hooks one at a time, and lift the board off of the button panel. 3. Use a black stick to pry up the button panel from the chassis. 3. Use a black stick to pry up the button panel from the chassis. 4. When installing the replacement NMI switch board, ensure the circular buttons align with the round openings in the chassis. 5. Install the...
Procedure Nph
1. Place the computer core on its side so the logic board is on top and the memory card slots are on your left. Using a Torx T10 screwdriver, remove the two screws at the end of the board. 2. Locate the two screws in the uppermost left corner of the board. Remove the screw farthest from the corner. 3. At the uppermost right corner of the board, remove the TorxHO dome-headed screw near the Ethernet port connector.
Power Adapter Verification
To power on, the computer's logic board requires a trickle power of 28 V. If the system fails to power on, first reset the PMU. Then follow the procedure below to determine if the symptom is related to the external power adapter. Note To verify the power adapter, you need a volt meter. When connecting the volt meter leads to specific pins, make sure the power adapter cable remains securely plugged into its connector on the logic board. 1. Ensure all cards and cables in the computer are securely...
Mac Cube Inside
1. Press the latch in, and turn over the core so the power button faces up. 2. Remove the four corner screws that secure the top plate to the four vertical posts. 3. Remove the four screws on the two sides. The two screws that align with the vertical plates are much longer than the other screws. 4. Lift out the LED cover that is fitted over the power button LED. Set the LED cover aside for installation on the new top plate assembly. 5. Carefully lift up the top plate and disconnect the keyed...
Resetting the PMU on the Logic Board
The PMU Power Management Unit is a microcontroller chip that controls all power functions for this computer. The PMU is a computer within a computer. Its function is to tell the computer to turn on, turn off, sleep, wake, idle, etc. manage system resets from various commands. maintain parameter RAM PRAM . manage the real-time clock. Important Be very careful when handling the logic board. The PMU is very sensitive and touching the circuitry on the logic board can cause the PMU to crash. If the...
Procedure Pyr
1. Turn the core on its side so the DC-to-DC board is directly in front of you. 2. Check the upper left corner of the DC-to-DC board. If there is a metal clip on the corner of the board, remove the screw from the clip, then lift off the clip. Note The metal clip is not present nor required on all production models. 3. Disconnect the power cable connector J2 on the lower left corner of the board and gently move the cable out of the way. 4. Locate the white, ridged ejector on the right end of the...
r
6. Turn over the video card. Holding the edge of the video card, disconnect the 28.5-volt power cable connector from the video riser card at J3. 7. Disconnect the 28.5-volt power cable from the logic board. To install the replacement power cable, use a needlenose pliers to align the cable with the connector. 8. Install the replacement 28.5-volt power cable, and reassemble and test the computer. Warning Never turn on the computer unless all of its internal and external parts are in place and it...