Apple iMac G5 17 original Service Manual

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Service Source

iMac G5 (17-inch)

Updated 1 October 2007

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Service Source

Take Apart

iMac G5 (17-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.

• 922-6796 Front Cover Assy,w/Optical Slot,iMac G5 17"

• 922-6795 Front Cover Assy,w/out Optical Slot,iMac G5 17"

• 661-3598 Panel, Display w/Brackets, iMac G5 17"

Procedures added to Take Apart (May 2005)

• Fans, Upper

• Logic board

• Speakers

• Microphone

• Bluetooth card

• Soft modem

• Chassis

General Information

iMac G5, 17-inch Take Apart -

• AirPort antenna

• Bluetooth antenna

• LED light pipe

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iMac G5, 17-inch Take Apart

General Information

Tools

The following tools are required to service the computer:

• Phillips #2 screwdriver

• Flat-blade screwdriver

• Torx-6 and 8 screwdriver

• 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, 17-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.

Important:

you how to ground yourself.

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

4. The midplane is no longer offered as a service part or as a Do-it-Yourself repair. Most parts on the midplane are now available as individual service parts.

5. The display/bezel parts no longer offered as a service or DIY repair. The display and front bezel are offered separately.

6. Additional items are included with these service parts:

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.

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

Logic Board

• Syringe with thermal compound

• Alcohol cleaning wipe

• A new pre-printed Ethernet label is included with the midplane. Attach the sticker to

the bottom of the computer’s foot, above the existing label.

• A blank serial number label is included with the midplane. Copy the serial number

off the bottom of the computer’s foot and attach the new label to the midplane. The midplane take apart procedure will show you where to attach the label.

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

8. A screw chart is attached at the end of this document. Use the chart to identify screw type and screw locations.

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iMac G5, 17-inch Take Apart

General Information

Removing the Back Cover

Tools

Use the screwdriver provided, or a Phillips #2 screwdriver

Procedure

1. Turn your computer off by choosing Shut down from the Apple (K) menu.

2. Disconnect all cables, and unplug the power cord from your computer. Put on your ESD Wrist strap.

Removing the Back Cover

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3. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of the computer and slowly lay the computer face down as shown.

4. Locate the three case screws circled below. You may have to lift the metal foot to locate the middle case screw. display/bezel assembly and cannot be removed.

5. Using the screwdriver provided, or a Phillips #2 screwdriver, loosen the three captive screws. once they stop turning.

Note:

Turn the screws to the left until they stop turning. Don’t force the screws

Note:

These screws are captive; they are part of the

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iMac G5, 17-inch Take Apart

Removing the Back Cover

6. Holding the back cover by the metal stand, tilt the cover up and lift it off the computer. Set the back cover aside.

Removing the Back Cover

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Replacing the Back Cover

Tools

Use the screwdriver provided, or a Phillips #2 screwdriver

Procedure

1. Remove the replacement back cover and foot from its packaging.

2. Replace the cover so that the slots on the top edge of the back cover mate with the tabs on the display housing.

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iMac G5, 17-inch Take Apart

Replacing the Back Cover

3. Lower and press the cover into place until it ﬁts snugly on the computer.

4. Tighten the three captive case screws by turning them to the right. Don’t overtighten the screws

Replacing the Back Cover

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5. Make sure the case is not bowing along the bottom or sides. If it is, check that the optical drive and cables are seated properly. There should be no gaps around the edges when the screws are tightened.

6. Position the computer in the upright position. Reconnect the power cord and remaining cables. Turn on the computer.

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iMac G5, 17-inch Take Apart

Replacing the Back Cover

Serial ATA Hard Drive

Tools

• Use the screwdriver provided, or a Phillips #2 screwdriver, preferably with a

magnetized tip

• Flatblade screwdriver

• Screw tray or something equivalent to hold the screws

Preliminary Steps

Before you begin, remove the back cover.

Part Location

Serial ATA Hard Drive

iMac G5, 17-inch Take Apart -

Removing the Serial ATA Hard Drive

1. To access the hard drive you must ﬁrst remove other service modules. This procedure will show you how to remove and replace these modules. module, set it aside, along with the screws for that module.

2. Ground yourself. Touch the metal surface (as shown below) on the inside of the computer to discharge any static electricity.

Warning: Always discharge static electricity before you touch any parts or install any components inside the computer. To avoid generating static electricity, do not walk around the room until you have ﬁnished installing the part and closed the computer

Note:

As you remove each

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iMac G5, 17-inch Take Apart

Serial ATA Hard Drive

3. Locate the fan cover near the top of the computer.

4. Using the tool provided, or a Phillips #2 screwdriver, remove the two fan cover screws. Lift the fan cover off the computer. Set the screws and fan cover aside.

Serial ATA Hard Drive

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5. Locate the hard drive in the top right corner.

6. Move the black video cable (located to the left of the hard drive) out of the way to access a hard drive screw.

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iMac G5, 17-inch Take Apart

Serial ATA Hard Drive

4. Remove the three hard drive screws. Set the screws aside.

5. Carefully lift the hard drive straight up, about one inch, and disconnect the black cable from the white connector on the hard drive. attached to the logic board.

Note:

Leave the other end of the cable

Serial ATA Hard Drive

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6. Using your ﬁngers, or a ﬂat-blade screwdriver, disconnect the drive data cable and power cable from the hard drive.

7. Lift the hard drive up and out of the midplane assembly. drive to Apple in the packaging provided.

Important:

Return this hard

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iMac G5, 17-inch Take Apart

Serial ATA Hard Drive

Replacing the Serial ATA Hard Drive

1. Remove the replacement hard drive from its packaging.

2. Connect the drive data cable and power cable to the hard drive. Lower the hard drive into place on the midplane.

3. Connect the black cable to the white connector on end of the hard drive.

Serial ATA Hard Drive

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4. Replace the three hard drive screws.

5. Tuck the black video cable into the area shown by the arrows.

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iMac G5, 17-inch Take Apart

Serial ATA Hard Drive

6. Press the video cable into the notch on the midplane chassis.

4. Replace the two fan cover screws. The larger screw attaches on the left. sure the pull tab is sticking up as shown

Note:

Make

Serial ATA Hard Drive

iMac G5, 17-inch Take Apart -

Parallel ATA Hard Drive

Tools

• Use the screwdriver provided, or a Phillips #2 screwdriver, preferably with a

magnetized tip

• Screw tray or something equivalent to hold the screws

Preliminary Steps

Before you begin, remove the back cover.

Part Location

Note:

The Parallel ATA hard drive is only available on the Education model.

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iMac G5, 17-inch Take Apart

Parallel ATA Hard Drive

Removing the Parallel ATA Hard Drive

1. Ground yourself. Touch the metal surface (as shown below) on the inside of the computer to discharge any static electricity.

Parallel ATA Hard Drive

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2. Locate the parallel ATA hard drive in the top right corner.

4. Remove the three hard drive screws. Set the screws aside.

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iMac G5, 17-inch Take Apart

Parallel ATA Hard Drive

5. Locate the white connector on the end of the hard drive.

6. Carefully lift the hard drive straight up, about one inch and disconnect the black cable from the white connector. board.

Note:

Leave the other end of the cable attached to the logic

Parallel ATA Hard Drive

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7. Using your ﬁngers, disconnect the drive data cable and power cable from the hard drive.

8. Lift the hard drive up and out of the midplane assembly. drive with the carrier to Apple in the packaging provided.

Important:

Return this hard

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iMac G5, 17-inch Take Apart

Parallel ATA Hard Drive

Replacing the Parallel ATA Hard Drive

1. Remove the replacement hard drive from its packaging.

2. Connect the drive data cable and power cable to the hard drive. Lower the hard drive into place on the midplane.

3. Connect the black cable to the white connector on end of the hard drive.

Parallel ATA Hard Drive

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4. Replace the three hard drive screws.

5. Before replacing the back cover, tuck the black video cable into the space next to the hard drive.

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iMac G5, 17-inch Take Apart

Parallel ATA Hard Drive

Optical Drive

Tools

• Use the screwdriver provided, or a Phillips #2 screwdriver, preferably with a

magnetized tip

• Screw tray or equivalent to hold the screws

Preliminary Steps

Before you begin, remove the back cover.

Part Location

Note:

The education models do not have an optical drive.

Optical Drive

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Removing the Optical Drive

1. Ground yourself. Touch the metal surface (as shown below) on the inside of the computer to discharge any static electricity.

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Optical Drive

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