Apple power mac g5 late 2005 User Manual

Power Mac G5 (Late 2005) Take Apart — Power Button 111
Remove the metal activation ring that lies below the power button board. 
Remove the power button from the enclosure. 
5.
6. 

Power Mac G5 (Late 2005) Take Apart — Logic Board 112
Logic Board
Tools
The following tools are required for this procedure:
Phillips #1 screwdriver
long-handled T-10 torx driver
9/32-inch nut driver
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)
Processor...

Power Mac G5 (Late 2005) Take Apart — Logic Board 113
Part Location 

Power Mac G5 (Late 2005) Take Apart — Logic Board 114
Procedure
Disconnect the cables from the top and bottom edge of the logic board. 
Using a long-handled T-10 torx driver, remove the nine power supply bus bar screws. 
1.
2. 

Power Mac G5 (Late 2005) Take Apart — Logic Board 115
Using a 9/32-inch nut driver, remove the six logic board standoffs. 
Using a Phillips #1 screwdriver, remove the three black logic board mounting screws. 
Move the cables and processor power terminal assemblies out of the way. Then carefully 
slide the logic board to the left to release it from the three mushroom-head standoffs. 
Tilt the logic board up and maneuver it out of the enclosure, making sure the ports clear the 
enclosure openings. 
 
3....

Power Mac G5 (Late 2005) Take Apart — Logic Board 11
Note: Perform the following procedures only if you are replacing the logic board with a new 
logic board.
Transfer the following from the original logic board to the replacement board: 
• Memory DIMMs 
• 
Ambient board 
• 
Quadro FX 4500 graphics card cable (if installed)
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. 
Replacement Procedure...

Power Mac G5 (Late 2005) Take Apart — Logic Board 11
Temporarily tuck the top cables into the openings in the media shelf so that they are out of 
the way. Also tape or hold the bottom cables out of the way. 
Note: You may find a long strip of packing tape useful in securing the cables.
Angle the logic board into the enclosure so that the port edge goes in first. 
Warning: Be careful not to catch the battery on the edge of the case as you lower the logic 
board into the enclosure. Also make sure...

Power Mac G5 (Late 2005) Take Apart — Logic Board 11
Replace the three logic board screws and six standoffs in the order indicated below. 
 
Important: There are two versions of the power supply, one with two processor power 
terminal assemblies and the other with just one processor power terminal assembly. In either 
case, make sure the rear standoffs are threaded through the power terminal rings before you 
insert the standoffs into the logic board. 
5. 

Power Mac G5 (Late 2005) Take Apart — Logic Board 11
Replace the nine power supply bus bar screws.
Reconnect all cables at the top and bottom edge of the logic board.
Replace the PCI divider.
Replace the front panel board.
Replace the speaker/fan assembly and reconnect its cables to the logic board.
Replace the PCI card guide. 
Note: If the computer includes a Quadro FX 4500 graphics card, you must connect the 
Quadro FX 4500 cable to the logic board before you replace the PCI card guide.
Replace...

Power Mac G5 (Late 2005) Take Apart — Antenna Board and Cables 120
Antenna Board and Cables
Note: The antenna cables are permanently attached to the antenna board. The cables and board 
are removed from the enclosure as a unit.
Tools
The only tools required for this procedure are a Phillips #1 screwdriver and a flatblade 
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...