Apple pmg4 mir fw800 Service Manual
Service Source
Power Mac G4 (Mirrored Drive Doors)
Power Mac G4 (FW 800)
Updated 22 February 2006
© 2003 Apple Computer, Inc. All rights reserved.
Service Source
Take Apart
Power Mac G4 (Mirrored Drive Doors)
Power Mac G4 (FW 800)
© 2003 Apple Computer, Inc. All rights reserved.
General Information
Overview
The identifying characteristics on the front of the Power Mac G4 (Mirrored Drive Doors),
Power Mac G4 (Mirrored Drive Doors 2003), and Power Mac G4 (FW 800) computers are
their top speaker and mirrored optical drive bezel. Like the Power Mac G4 (QuickSilver
and QuickSilver 2002) computers, these models also have a silver-colored case.
The Power Mac G4 (Mirrored Drive Doors 2003) computer is identical to the Power Mac
G4 (Mirrored Drive Doors) computer except for updates to the drives and processor.
The Power Mac G4 (FW 800) computer is similar to the Power Mac G4 (Mirrored Drive
Doors) computer with these exceptions:
• FireWire 800 Mbps port
• AirPort Extreme Card option
• Bluetooth option
• SCSI card option is a third-party card; no Apple SCSI card option
• SCSI cable is a third-party cable; no Apple SCSI cable
General Information
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1
Important:
unless model differences are noted.
The Take Apart procedures are the same for all versions of the computers
Tools
The following tools are required:
• #2 Phillips screwdriver
• #1 Phillips screwdriver
• T-10 Torx driver or 2.5 mm Allen wrench
• Small flat-blade screwdriver
• Needlenose pliers
Note:
Magnetized tools are recommended to avoid dropping screws within the computer.
Note:
To organize the screws you remove from the computer, use a tray with divided
compartments (such as a plastic ice cube tray).
Serial Number Location
The computer’s serial number is located on the back panel.
Before Opening the Computer
Warning:
be opened for any reason, even when the computer is off.
Warning:
it to allow internal components to cool.
Important:
disconnect their power plugs from the power source. Make sure the power cords to the
computer and display are within easy reach.
Electrostatic Discharge (ESD) Precautions
Follow these steps to avoid damage from ESD before working inside the computer.
1. Shut down the computer.
2. Wait a few minutes to allow the computer’s internal components to cool.
3. Unplug all cables from the computer except the power cord.
4. Touch the metal PCI access covers on the back panel to discharge static electricity.
5. Unplug the power cord.
The power supply in this computer is a high-voltage component and should not
After shutting down the computer, you must wait a few minutes before servicing
The only way to shut off power completely to the computer and display is to
6. Lift the latch on the side of the computer. (If the latch will not lift, check that the
security lock port and lockable cover latch in the back of the computer are not locked.)
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Power Mac G4 (Mirror/FW 800) Take Apart
General Information
7. Put on an ESD wrist strap.
8. To avoid static electricity building back up in your body, do not walk around the room
until after you have finished working and closed the computer.
Operating the Computer
Warning: In this computer the lower fan is in direct line with the heatsink. However,
when the computer is open and the side panel is set down, the fan and heatsink are
no longer in contact. To avoid overheating and permanent damage, never turn on
the computer unless all of its internal and external parts are in place and it is
closed. Operating the computer when it is open or missing parts can damage the
computer or cause injury.
General Information
Power Mac G4 (Mirror/FW 800) Take Apart -
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Opening the Computer
Tools
No tools are required for this procedure.
Preliminary Steps
No preliminary steps are required before you begin this procedure.
Procedure
1. Lift the latch to unlock the right side access panel.
2.
Note:
Gently lower the side panel onto a clean, ESD-safe mat to avoid scratching the
case. Lower the side panel until it lies flat.
Note:
Release the latch before returning the side panel to its upright closed position.
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Power Mac G4 (Mirror/FW 800) Take Apart
Opening the Computer
Top Handles
Tools
The only tool required for this procedure is a 2.5 mm Allen wrench.
Part Location
Top Handles
Preliminary Steps
There are no preliminary steps for this procedure.
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Procedure
1. Remove the two Allen screws that secure the handle you are replacing.
2. Lift the handle from the computer.
Replacement Note:
raised points on the computer.
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Power Mac G4 (Mirror/FW 800) Take Apart
When replacing a handle, make sure the inner prongs fit inside the
Top Handles
Replacement Note:
three tiny bumps are near the lower edge of the handle.The handle won’t fit properly if it is
turned upside down. The top front and top rear handles are interchangeable.
When replacing a handle, make sure you orient the handle so the
Top Handles
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Top Panel
Tools
No tools are required for this procedure.
Part Location
Preliminary Steps
Before you begin, remove the handles from the top front and top rear of the
computer.
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Power Mac G4 (Mirror/FW 800) Take Apart
Top Panel
Procedure
1. Slide the top panel toward the front of the computer to unhook the six tabs.
2. Lift the top panel from the chassis.
Top Panel
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Speaker Grill
Tools
The only tool required for this procedure is a small flat-blade screwdriver.
Part Location
Preliminary Steps
There are no preliminary steps for this procedure.
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Power Mac G4 (Mirror/FW 800) Take Apart
Speaker Grill
Procedure
1. Insert the tip of a screwdriver into one of the openings in the speaker grill.
Warning:
2. Pry out the speaker grill.
To prevent damage to the speaker, do not insert the screwdriver too far.
Replacement Note:
Press the replacement speaker grill into the speaker opening.
Speaker Grill
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Lower Supports
Tools
The only tool required for this procedure is a 2.5 mm Allen wrench.
Part Location
Preliminary Steps
Before you begin, place the computer upside down on an ESD mat.
Warning:
computer can be unstable.
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Power Mac G4 (Mirror/FW 800) Take Apart
When the computer is upside down or the lower supports are removed, the
Lower Supports
Procedure
1. With the computer upside down, remove the two Allen screws securing the support to
the computer.
2. Remove the support from the computer.
Lower Supports
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Lower Panel, Front
Tools
No tools are required for this procedure.
Part Location
Preliminary Steps
Before you begin, remove the lower front support.
Warning:
computer can be unstable.
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Power Mac G4 (Mirror/FW 800) Take Apart
When the computer is upside down or the lower support is removed, the
Lower Panel, Front
Procedure
1. Lift the lower front panel from the chassis. There are no screws holding this panel to
the chassis; the front support holds it in place.
2.
Important:
from the notches in the lower front panel.
Note the routing of the AirPort antenna cable. Carefully remove it
Lower Panel, Front
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Lower Panel, Rear
Tools
No tools are required for this procedure.
Part Location
Preliminary Steps
Before you begin, remove the lower rear support.
Warning:
computer can be unstable.
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Power Mac G4 (Mirror/FW 800) Take Apart
When the computer is upside down or the lower support is removed, the
Lower Panel, Rear
Procedure
Lift the lower rear panel from the chassis. There are no screws holding this panel to the
chassis; the rear support holds it in place.
Lower Panel, Rear
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Rear Vented Panel
Tools
The following tools are required for this procedure:
• 2.5 mm Allen wrench
• Flat-blade screwdriver
Part Location
Preliminary Steps
Before you begin, remove the following:
• Lower rear support
• Lower rear panel
• Top rear handle
Warning:
computer can be unstable.
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Power Mac G4 (Mirror/FW 800) Take Apart
When the computer is upside down or the lower supports are removed, the
Rear Vented Panel
Procedure
1. With the computer positioned on its left side panel, remove the three Allen screws
securing the rear vented panel to the computer.
2. Use a flat-blade screwdriver to pry out the tabs from the lower chassis.
Rear Vented Panel
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3. Grasp the rear vented panel on both sides of the lockable cover latch, and forcefully
pull off the rear vented panel.
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Power Mac G4 (Mirror/FW 800) Take Apart
Rear Vented Panel
Hard Drive Carrier, Back
Tools
The following tools are required for this procedure:
• Magnetized #2 Phillips screwdriver.
• Pliers
Part Location
Preliminary Steps
Before you begin, open the side access panel.
Hard Drive Carrier, Back
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Procedure
1. Using a Phillips screwdriver, remove the screw that attaches the carrier to the chassis.
Note:
On some production models, the screw is not present nor required.
2. Pull the left side lever forward, and slide the carrier up to release the mounting pegs
on the back of the carrier from the chassis.
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Power Mac G4 (Mirror/FW 800) Take Apart
Hard Drive Carrier, Back
3. Rotate the carrier back from the chassis far enough to reach the drive cables.
Disconnect the hard drive data and power cables (P2 and P3) from the hard drive(s).
Note: You might need to use pliers to grasp and disconnect the power cable
connector(s).
4. Remove the carrier and drive(s) from the computer.
Replacement Note: Connect the cables to the drives before installing the carrier.
Hard Drive Carrier, Back
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Replacement Note: Be sure to align the mounting pegs on the back of the carrier with the
notches in the chassis. Then press the carrier in and down until the pegs engage and the
left side lever clicks into place.
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Hard Drive Carrier, Back
Hard Drive Carrier, Front
Tools
The only tool required for this procedure is a magnetized Phillips screwdriver.
Part Location
Preliminary Steps
Before you begin, open the side access panel.
Hard Drive Carrier, Front
Power Mac G4 (Mirror/FW 800) Take Apart - 25
Procedure
1. Press down on the carrier’s right side lever.
2. Holding the lever down, slide the carrier forward and out of the computer.
Warning: Be careful not to scrape any cables when sliding the carrier forward.
Replacement Note: Align the center mounting peg on the top of the carrier with the
center channel on the underside of the optical drive shelf. This center peg helps to guide
the carrier. Then align the two remaining pegs, and slide the carrier in until the pegs
engage and the right side lever clicks into place.
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Hard Drive Carrier, Front
Replacement Note: Before closing the side access panel, make sure the P4 and P5
power cable connectors are either attached to the hard drives or tucked inside the front
hard drive carrier.
Hard Drive Carrier, Front
Power Mac G4 (Mirror/FW 800) Take Apart - 27
Hard Drive
Tools
The only tool required for this procedure is a Phillips screwdriver.
Preliminary Steps
Before you begin, do the following:
• Open the side access panel.
• Remove the hard drive carrier.
Procedure
1. Remove the four mounting screws from the sides of the drive carrier.
2. Slide the drive forward out the front of the drive carrier.
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