Apple power mac g5 late 2004 User Manual

							
Power Mac G5 (Late 2004) Take Apart - 62
 PCI Divider
PCI Divider
Tools
The only tool required for this procedure is a Phillips screwdriver.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and 
remove the following:
• All AGP and PCI cards
• Airport Extreme Card (if installed)
• Heatsink cover
• Processor inlet frame
• PCI card guide
• Speaker/fan assembly
• Heatsink cover
• Rear exhaust fan assembly
Part Location 
						

							
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 PCI Divider
Procedure
1. If no Airport Extreme Card or Bluetooth card was installed in the computer, disconnect 
their cables from the clips on the PCI divider.
2. Disconnect the modem  filter cable from the clip on the PCI divider.
3. Remove the three black mounting screws above the PCI divider and the three black  mounting screws below the PCI divider.
4. Slide the PCI divider from under the logic board and remove it from the enclosure. 
						

							
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 Logic Board
Logic Board
Tools
The only tool required for this procedure is a Phillips screwdriver.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and 
remove the following:
• All AGP and PCI cards
• Airport Extreme Card (if installed)
• PCI card guide
• Speaker/fan assembly
• Heatsink cover
• Processor inlet frame
• Rear exhaust fan assembly
• PCI divider
Part Location 
						

							
Power Mac G5 (Late 2004) Take Apart - 65
 Logic Board
Procedure
Important:  The processor/heatsink is part of the logic board and must not be removed 
separately. Remove and replace the logic board and processor as a unit. 
1. Disconnect the  five cables from the top of the logic board.
2. Disconnect the two power supply cables and the front panel board cable from the  bottom of the logic board.
3. Move the cables at the top of the logic board out of the way by temporarily tucking  them into the openings in the media bay shelf. 
						

							
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 Logic Board 4. Remove the three black logic board mounting screws (indicated by the circles) and the 
two large black processor mounting screws (indicated by the squares).
5. Slide the logic board to the left and then lift a short distance straight up to disengage  the board from its three mounting posts. Slide and lift the logic board by holding onto 
the board’s edges, never the processor.
Note:  Make sure the logic board ports clear the openings in the enclosure. 
						

							
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 Logic Board 6. Carefully tilt the front edge of the logic board up and maneuver the board out of the 
enclosure. Place the board on an ESD-safe surface with the processor facing up.
Note:  Perform the next steps only if you are replacing the logic board with a new board.
7. Transfer the following from the original logic board to the replacement logic board (see  individual procedures earlier in this chapter for detailed steps):
• Memory DIMMs
• Modem (if installed)
• Bluetooth card (if installed)
8. Transfer the port EMI shield from the original logic board to the replacement logic  board, making sure the shield is fully seated on the ports. 
						

							
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 Logic Board Replacement Note:
 When installing the logic board into the computer, make sure the 
antenna board shield is not bent back away from the case. The shield should touch the 
case when the logic board is fully installed. 
						

							
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 Modem Filter Board and Cable
Modem Filter Board and Cable
Tools
The only tool required for this procedure is a Phillips screwdriver.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and 
remove the following:
• Modem (if installed)
• All AGP and PCI cards
• Airport Extreme Card (if installed)
• PCI card guide
• Speaker/fan assembly
• Heatsink cover
• Processor inlet frame
• Rear exhaust fan assembly
• PCI divider
• Logic board 
						

							
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 Modem Filter Board and Cable
Part Location
Procedure
1. Remove the modem cable from the clips on the underside of the logic board. 
						

							
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 Modem Filter Board and Cable 2. Remove the two screws that secure the antenna board, lift the board, and remove the 
modem cable from underneath the board.
3. Remove the mounting screw on the modem  filter board cap and remove the cap.