iMac G5 (20-inch).pdf

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Service Source

iMac G5, 20-inch

Updated 5 December 2007

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Service Source

Take Apart

iMac G5 (20-inch)

General Information

What’s New

October 2007

Updated Logic Board replacement procedure. A “caution” was added to notify service

providers not to twist, ﬂex, or bend the iMac G5 logic as you install to board into the

chassis. Flexing the board may jeopardize the thermal interface between the heatsink and

the processor. Refer to the iMac logic board inbox notice 073-1158 for additional

information.

July 2006

A diecut piece of microfoam (922-7671) is included with all replacement optical drives and

display bezels. It should be installed in between the disc drive and the display bezel to

prevent optical media from ejecting out of the system and dropping to the desktop. Only

one diecut of microfoam should be used per system. Refer to the replacement procedures

in Take Apart for either the optical drive, display bezel, or microfoam shim for more

information.

Display/Bezel Assembly Elimination

Effective July 24, 2006, the Display and Bezel assembly module will no longer be available

as a single service part for the iMac G5 (17- and 20-inch models). The Display and Bezel

are now available as two separate service parts (see below) to simplify inventory and

reduce repair costs.

• 922-6817 Front Cover Assy,w/Optical Slot,iMac G5 20"

• 661-3609 Panel, Display w/Brackets, iMac G5 20"

Tools

The following tools are required to service the computer:

• Phillips #2 screwdriver

• Flat-blade screwdriver

• Torx T6, T8 and T10 screwdrivers

• Jeweler’s flat-blade screwdriver

• Nylon probe tool (black stick 922-5065)

• Needlenose pliers

• Soft cloth (to protect removed parts from scratches)

General Information

iMac G5 (20-inch) Take Apart -

Important Things to Know

1. All customer removable screws are brass colored (except for some fan screws

on earlier units which use torx screws). Do not remove screws unless they are

brass colored, or you will void your warranty.

Ground yourself when working on the computer. The procedure will show

you how to ground yourself.

Memory DIMM connector latches are fragile and need to be handled

carefully when removing the inverter and logic board. Also note that packing the logic

board in the proper service packing is very important.

4. A magnetized “L”-shaped Phillips screwdriver is included with the replacement part.

There are additional items that are included with the midplane and the back cover

assembly. Those items are listed below.

Back Cover

• Two blank labels are included with the replacement back cover. Copy the serial

number and Ethernet number off the bottom of the computer’s foot and attach the

new labels to the bottom of the replacement foot. The back cover take apart

procedure will show you where to attach the labels.

6. Do not pull on individual wires when disconnecting a part; pull on the connector.

7. A screw chart is attached at the end of this document.

2 -

iMac G5 (20-inch) Take Apart

General Information

Important:

Removing the Back Cover

Tools

Use the screwdriver provided, or a Phillips #1 screwdriver

Part Location

Removing the Back Cover

iMac G5 (20-inch) Take Apart -

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