Apple power mac g4 fw 800 User Manual

							Power Mac G4 (Mirror/FW 800) Take Apart - 89
 HeatsinkPower Mac G4 (FW 800): 
• four 11-mm long #2 Phillips screws at heatsink
Power Mac G4 (FW 800), Best Configuration: 
• four 11-mm long #2 Phillips screws at heatsink 
						

							90 - Power Mac G4 (Mirror/FW 800) Take Apart
 Heatsink 2. Lift the heatsink straight up and remove it from the computer.
Power Mac G4 (FW 800), Best Configuration: 
Warning: Handle the heatsink with care. Do not touch the underside of the heatsink. 
The solder joints at the heatsink coils are delicate and might be warm. 
						

							Power Mac G4 (Mirror/FW 800) Take Apart - 91
 HeatsinkNote: Whenever you remove the heatsink, you must clean the heatsink base and add new 
thermal grease to the chips on the processor, as follows:
• Use a clean pad to carefully remove the existing thermal grease from both chips.
• Apply a 3-mm round dot of thermal grease on the center of both chips.
• Use an alcohol pad to gently clean and dry the underside of the heatsink.
• Ensure the heatsink is level as you CAREFULLY place it on the processor.
• Install the screws, loosely tightening each half way before fully tightening each screw. 
						

							92 - Power Mac G4 (Mirror/FW 800) Take Apart
 Heatsink Power Mac G4 (FW 800): 
Replacement Note: If you are replacing the heatsink in the Power Mac G4 (FW 800) 
model, remove the two #2 Phillips screws at the heatsink bracket, and transfer the 
bracket to the replacement heatsink.
  
						

							Power Mac G4 (Mirror/FW 800) Take Apart - 93
 HeatsinkPower Mac G4 (FW 800), Best Configuration: 
Replacement Note: If you are replacing the heatsink in the Best configuration of the 
Power Mac G4 (FW 800) model, remove the two #2 Phillips screws at the heatsink 
bracket, and transfer the bracket to the replacement heatsink. (Refer to previous 
page.) 
  
						

							94 - Power Mac G4 (Mirror/FW 800) Take Apart
 Processor
Processor
Tools
No tools are required for this procedure.
Part Location
Preliminary Steps
Before you begin, do the following:
• Open the side access panel.
• Remove the heatsink.
• Remove the thermal grease (refer to Heatsink procedure). 
						

							Power Mac G4 (Mirror/FW 800) Take Apart - 95
 Processor
Procedure
1. Grasp the processor by the edges and lift slightly to disconnect it from the logic board.
2. Slide the processor toward the back panel and then lift the processor up and out of the 
computer, being careful to clear the two mounting pegs.
Before Replacing the Processor
Important: Apple has determined a compatibility issue between the processor and certain 
fabrication levels of the logic board on some Power Mac Server G4 (Mirrored Drive Doors) 
and Power Mac G4 (Mirrored Drive Doors) products. Before ordering a replacement 
processor for those models, refer to What’s New in Troubleshooting.
  
						

							96 - Power Mac G4 (Mirror/FW 800) Take Apart
 Processor Stiffener
Processor Stiffener
Tools
No tools are required for this procedure.
Part Location
Preliminary Steps
Before you begin, do the following:
• Open the side access panel.
• Remove the heatsink.
• Remove the processor. 
						

							Power Mac G4 (Mirror/FW 800) Take Apart - 97
 Processor Stiffener
Procedure
1. Lift the processor stiffener straight up off the two mounting pegs.
2. Remove the stiffener from the computer.
  
						

							98 - Power Mac G4 (Mirror/FW 800) Take Apart
 Logic Board
Logic Board
Note: This procedure pictures the Power Mac G4 (MIrrored Drive Doors) computer. 
Although the logic board in the Power Mac G4 (FW 800) model has a somewhat different 
shape, the steps are the same.
Tools
The only tool required for this procedure is a Phillips screwdriver. 
Part Location
Preliminary Steps
Before you begin, open the computer and remove the following.
• DIMMs
• Video card