Apple power mac g5 late 2005 User Manual

							
Power Mac G5 (Late 2005) Take Apart — Processor (Quad) 101
Using a 3 mm flathead hex driver, replace the six long processor mounting screws. 
Using a 3 mm flathead hex driver, tighten the four captive float plate screws. 
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Power Mac G5 (Late 2005) Take Apart — Processor (Quad) 102
Reconnect the processor support bar cable with the processor cable.
Replace the processor support bar cable in the clip on the PCI divider.
Replace the processor inlet frame assembly on the front of the heatsink. 
Important: If you are replacing the processor with a new processor, be sure to use the inlet 
frame included with the replacement processor.
Replace the heatsink cover.
Replace the front inlet fan assembly.
Important: Whenever you replace a processor with a new processor, you must run Apple Service 
Diagnostic (once the computer is reassembled). Apple Service Diagnostic for Power Mac G5 
(Late 2005) is available as a download from the Disc Images section of the Apple Service Source 
website. For more information, see “Thermal Calibration” in the Troubleshooting chapter.
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Power Mac G5 Take Apart (Late 2005) — Processor Support Bar and Cable 103
Processor Support Bar and 
Cable
Note: The illustrations in this procedure are based on the Power Mac G5 (Late 2005 Quad) 
computer. Although the Power Mac G5 (Late 2005 Dual) support bar cable differs from the Quad 
cable (it has two connectors rather than three), the take-apart procedure for all configurations is 
primarily the same.
Tools
The only tool required for this procedure is a Phillips #1 screwdriver.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove 
the following:
Front inlet fan assembly
Heatsink cover
Processor inlet frame (Dual 2.0/2.3 GHz) or Processor inlet frame (Quad)
Processor (Dual 2.0/2.3 GHz) or Processor (Quad)
Part Location
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Power Mac G5 Take Apart (Late 2005) — Processor Support Bar and Cable 104
Procedure
Remove the two mounting screws from the processor support bar. 
Disconnect the processor support bar cable from the logic board.
Power Mac G5 (Late 2005 Quad): If necessary, remove the processor support bar cable from 
the clip on the PCI divider. 
Lift the bar and attached cable straight up and out of the enclosure.
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Power Mac G5 Take Apart (Late 2005) — Processor Support Bar and Cable 105
To remove the cable from the support bar:
Depress the two clips on either side of the front inlet fan connector and remove the 
connector from the support bar.
Unclip the cable from the support bar and remove the cable from the bar. 
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Power Mac G5 (Late 2005) Take Apart — Front Panel Board 10
Front Panel Board
Tools
The only tool required for this procedure is a Phillips #1 screwdriver.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove 
the following:
Front inlet fan assembly
Any memory DIMMs installed next to the front panel board
Part Location
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Power Mac G5 (Late 2005) Take Apart — Front Panel Board 10
Procedure
Disconnect the power button cable from the front panel board.
Remove the two front panel board mounting screws. 
Gently pull the board back from the front panel, tip the back of the board up so that it clears 
the DIMM slot ejectors, and remove the board from the enclosure. 
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Power Mac G5 (Late 2005) Take Apart — Front Panel Board 10
Note: If you are replacing the front panel board with a new board, carefully remove the EMI 
shield from the original board and transfer it to the replacement board. Make sure that the 
fingers of the shield enclose the board as shown in the illustration below.
Replacement Note: When replacing the front panel board, align the ports on the board with the 
openings in the front panel board. Then press the board firmly to the enclosure. 
						

							
Power Mac G5 (Late 2005) Take Apart — Power Button 10
Power Button
Tools
The only tool required for this procedure is a jeweler’s flat-blade screwdriver.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove 
the following:
Front inlet fan assembly
Any memory DIMMs installed next to the front panel board
Front panel board
Part Location
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Power Mac G5 (Late 2005) Take Apart — Power Button 110
Procedure
Lay the computer so that the front panel is facing down.
Remove the black rubber cap that covers the power button LED.
Using a jeweler’s flat-blade screwdriver, pry up the metal C-ring that secures the power 
button board. 
Lift up and remove the power button board. 
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