Apple power mac g4 cube User Manual

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 DC-to-DC Board
DC-to-DC Board
Tools
The only tool required for this procedure is a Torx T10 screwdriver.
Preliminary Steps
Before you begin, remove the computer core from the enclosure.
Procedure
1. Turn the core on its side so the DC-to-DC board is directly in front of you.  
						

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 DC-to-DC Board 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 board. 
						

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 DC-to-DC Board5. Looking down at the top edge of the board, use a screwdriver to press the ridged 
ejector away from the locking slot in the board.
6. With one hand, grasp the left corner of the board, and with the other hand insert your 
index Þnger underneath the board to tilt the board up.
  
						

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 DC-to-DC Board 7. Gently rock and lift the board out of the chassis, being careful not to touch or scrape 
any components.
8. Check that the ejector on the connector is tipped back (not blocking the connector 
slot).  
						

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 DC-to-DC Board9. Holding the replacement DC-to-DC board by the top edge, position the right end of the 
board over the board connector. Tilt the left end of the board down Þrst, and then 
insert the right end of the board into the connector. 
10. Press the board into the connector so the board is fully seated and the ejector 
engages in the board slot.
 
11. Connect the power cable (J2). 
12. Tuck in the power cable so it cannot be caught when replacing the core in the 
enclosure.
  
						

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 DC-to-DC Board 13. 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 or cause injury. 
						

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 Logic Board
Logic Board
Tools
This procedure requires the following tools:
¥ Torx T10 screwdriver
¥ JewelerÕs flat-blade screwdriver
Preliminary Steps
Before you begin, remove the following:
¥ Computer core from enclosure
¥ Video card and video riser card
¥ Modem board
¥ Memory card
¥ Top plate assembly
¥ DC-to-DC board
Procedure
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.
  
						

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 Logic 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. 
						

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 Logic Board4. 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 jewelerÕs ßat-blade screwdriver between the heat spreader and heatsink and 
gently pry up the heat spreader. 
						

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 Logic Board 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 engage 
with the two corner standoffs before inserting the ports into the I/O panel.