Apple power mac g5 early 2005 User Manual

							
66 Power Mac G5 Take Apart

Heatsink Cover: Power Mac G5
Tools
No tools are required for this procedure.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and 
remove the front inlet fan assembly.
Part Location 
						

							
Power Mac G5 Take Apart 67
Procedure
Note: The heatsink cover is held in place by two sets of small plastic latches on the underside of 
the cover. 
Place both index fingers under the edge of the heatsink cover near the “G” and press in on 
the first set of latches. 
Release the second set of latches under the opposite edge of the cap and lift the cover off 
the heatsink.
1.
2. 
						

							
68 Power Mac G5 Take Apart

Heatsink Cover: Power Mac G5 
(June 2004/Early 2005)
Tools
This procedure requires the following tools:
Mat knife or Xacto knife (to remove locking rivet)
Cup hook (to remove locking rivet)
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and 
remove the front inlet fan assembly.
Part Location
•
• 
						

							
Power Mac G5 Take Apart 69
Procedure
Locate the locking rivet that secures the processor heatsink cover to the PCI divider.
Using a mat knife or Xacto knife, pry up and remove the plug at the center of the locking 
rivet. Warning: If you are not certified to service this product, removing the rivet will void the 
computer’s warranty.  
Replacement Note: For Power Mac G5 (June 2004 Dual 1.8/2.0 GHz and Early 2005 Dual 
2.0/2.3 GHz) computers, you do not need to replace the rivet after you have replaced the 
heatsink cover. For Power Mac G5 (June 2004 Dual 2.5 GHz and Early 2005 Dual 2.7 GHz) 
computers, you must replace the rivet. Extra rivets are available as part number 922-6503.
1.
2. 
						

							
70 Power Mac G5 Take Apart

Screw a cup hook into the center of the remaining rivet and holding onto the hook, rock the 
rivet back and forth until you work it out of the heatsink cover. Note: You may find it useful to 
insert a wooden stick into the hook to help pull out the rivet.
Slide the cover to the left to unlatch the four metal latches under the cover. Lift the cover up 
and off the heatsink.
3.
4. 
						

							
Power Mac G5 Take Apart 71

Replacement Note: Place the notches in the underside of the cover directly over the four 
mounting pegs. Slide the cover toward the back of the computer and then press down firmly 
until you feel the cover lock into place. 
						

							
72 Power Mac G5 Take Apart

Processor: Power Mac G5, 
Power Mac G5 (June 2004 Dual 
1.8/2.0 GHz), Power Mac G5 
(Early 2005 Dual 2.0/2.3 GHz)
Tools
This procedure requires either a long-handled Phillips screwdriver or a long-handled 2.5 mm hex 
wrench.
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 for Power Mac G5 or 
Heatsink cover for Power Mac G5 (June 2004/Early 2005)
Part Location
•
•
• 
						

							
Power Mac G5 Take Apart 73
Procedure
Note: If you have an original Power Mac G5, skip step 1 and go directly to step 2.
Tilt the processor inlet frame to the left and then up to unlatch the plastic piece from the 
heatsink.  
1. 
						

							
74 Power Mac G5 Take Apart

Note: The processor in this procedure is secured by four screws requiring either a long-
handled Phillips screwdriver or a long-handled 2.5 mm hex wrench, depending on the 
model. To determine which tool to use, check the head of the screw in the unit you are 
repairing.
If the processor mounting screws have a Phillips head, remove the four screws.
If the processor mounting screws have a hex head, loosen the four screws but do not 
remove them from their standoffs.
Lift the heatsink and processor straight up out of the computer. 
 
Warning: The heatsink and processor are a unit. Never separate the heatsink from the 
processor, or you will damage the processor and void the warranty. 
 
Note: If you have trouble removing the original processor (processor feels stuck) or installing 
the replacement processor, check for damaged split standoffs. One or more may be spread 
too far open, keeping the processor from fully seating in its connector. Replace any damaged 
split standoffs with the standoffs included with the processor.
Repeat steps 1–3 for the second processor, if necessary.
2.
3.
4.
5. 
						

							
Power Mac G5 Take Apart 75

Replacement Procedure
If you are replacing the processor with a new processor, do the following: 
•  When removing the new processor from its packaging, be careful to lift the processor 
 
  straight up out of the box. Tilting the processor could damage the heatsink seal.
 
•  Before installing the processor, remove the cap over the processor connector. 
 
Warning: Do not remove the clear plastic strip on the bottom of the processor. Removing 
the plastic could cause a short in the logic board.
1.