Apple power mac g4 fw 800 User Manual

Power Mac G4 (Mirror/FW 800) Take Apart - 39
 Lower Fan3. Slide the fan straight up to disconnect it from the optical drive shelf, and remove the 
fan from the computer.
Replacement Note: Align the fan with the three latches in the drive shelf and slide straight 
down until you feel the fan lock into place. 

40 - Power Mac G4 (Mirror/FW 800) Take Apart
 Lower Fan Replacement Note: On some production models, the fan includes a detachable finger 
guard. To transfer the finger guard to the replacement fan, use a needlenose pliers to 
remove the four plastic pegs. Then transfer the finger guard to the replacement fan. 

Power Mac G4 (Mirror/FW 800) Take Apart - 41
 Left Side Panel
Left Side Panel
Tools
The following tools are required for this procedure:
• 2.5 mm Allen wrench
• Needlenose pliers
Part Location
Preliminary Steps
Before you begin, open the computer and remove the optical drive carrier. 

42 - Power Mac G4 (Mirror/FW 800) Take Apart
 Left Side Panel
Procedure
1. Remove the four 2.5 mm Allen screws on the side panel.
2 . Using a needlenose pliers, squeeze the tabs (located beside the power supply 
cable bundle) to release the left side panel from the metal chassis.
3. Lift the left side panel from the chassis. 

Power Mac G4 (Mirror/FW 800) Take Apart - 43
 Front Panel
Front Panel
Tools
No tools are required for this procedure.
Part Location
Before you begin, open the computer and remove the following.
• Handle at the top front of the computer
• Support at the lower front of the computer
• Speaker grill (if present)
• Optical drive carrier
Warning:
 When the lower support is removed, the computer can be unstable. 

44 - Power Mac G4 (Mirror/FW 800) Take Apart
 Front Panel
Procedure
1. Open the side access panel. Locate the four front panel tabs. 
2. Carefully push the front panel tabs inward to release them from the chassis. 
3. Pull the front panel off the chassis.
4. Press inward on the four tabs to remove the optical drive bezel from the front panel. 

Power Mac G4 (Mirror/FW 800) Take Apart - 45
 
Power Supply
Tools
The following tools are required for this procedure:
• #2 Phillips screwdriver
• T-10 Torx driver
 Part Location
Preliminary Steps
Before you begin, do the following:
• Open the side access panel.
• Remove the optical drive carrier.
• Remove the lower fan. 

46 - Power Mac G4 (Mirror/FW 800) Take Apart
 Power Supply
Procedure
Warning:  The power supply in this computer is a high-voltage component and should not 
be opened for any reason, even when the computer is off. 
1. Use a T-10 Torx driver to remove the power supply screw from the back panel.
2. Remove the Phillips screw from the side panel. 

Power Mac G4 (Mirror/FW 800) Take Apart - 47
 Power Supply3. Disconnect the power supply cables from all drives and from the logic board.
Note: For the Power Mac G4 (FW 800) model of the computer, press and hold the 
tab on the black, plastic connector cover as you pull up the power connector from the 
board.
Replacement Note: Install the connector cover over the power connector for the 
replacement power supply.
4. Release the power cable harness from the guides and route the harness out through 
the...

48 - Power Mac G4 (Mirror/FW 800) Take Apart
 Power Supply 5. Slide the power supply forward and remove the power supply and cable harness from 
the computer.
Replacement Note: When rerouting the cable harness, make sure 
• connectors P4 and P5 are routed inside the front drive carrier 
• connectors P2 and P3 are routed so they can reach drives in the back drive carrier