Apple iMac (17-inch Flat Panel) 02-09 Service Manual

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Service Source

iMac (17-inch Flat Panel)

Updated Sept 18, 2002

© 2002 Apple Computer, Inc. All rights reserved.

Service Source

Take Apart

iMac (17-inch Flat Panel)

© 2002 Apple Computer, Inc. All rights reserved.

Tools

The following tools are recommended for the take apart procedures.

service repair kit (076-0900) includes:

the service stand (076-0898)

diagnostic cables (076-0897)

thermal paste (922-4757)

torque driver (076-0899)

1.5 mm hex driver (for LCD bezel screws)

phillips #0 screwdriver)

torx screwdriver set (6, 8, 10, 15, 25)

plastic flatblade screwdriver or stylus

needlenose pliers

ESD wriststrap and mat

Service Stand

Tools

iMac (17-inch Flat Panel) Take Apart - 1

1.Support the computer by neck and the base (A). Gently position the computer in the service stand with the flat panel facing up (B).

2. Note: The base of the computer can be rotated when servicing internal parts.

2 - iMac (17-inch Flat Panel) Take Apart

Tools

User Access Plate

Tools

This procedure requires the following tools:

• Phillips #0 screwdriver

Part Location

Preliminary Steps

Before you begin, do the following:

• Position the computer in the service stand.

User Access Plate

iMac (17-inch Flat Panel) Take Apart - 3

Procedure

1.Loosen the four captive screws on the access panel.

2.Remove the panel by grabbing onto two captive screws and lift the panel off the base.

4 - iMac (17-inch Flat Panel) Take Apart

User Access Plate

AirPort Card

Tools

This procedure requires no tools.

Part Location

Preliminary Steps

Before you begin, do the following:

Position the computer in the service stand.

Remove the user access plate.

AirPort Card

iMac (17-inch Flat Panel) Take Apart - 5

Procedure

1.Unplug all cables from the computer except the power cord.

2.Important: To avoid electrostatic discharge, always ground yourself by touching metal before you touch any parts or install any components inside the computer. To avoid static electricity building back up in your body, do not walk around the room until you have completed the installation and closed the computer.

3.Touch a metal surface inside the computer to ground yourself.

4.Unplug the power cord.

5.Disconnect the AirPort antenna and pull the plastic tab to remove the card from the slot.

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AirPort Card

Memory, SO-DIMM (userinstallable)

Tools

No tools are required for this procedure.

Part Location

Note: The user-installable memory slot is identified as Slot J12 by Apple Hardware Test and Apple System Profiler.

Preliminary Steps

Before you begin, do the following:

Position the computer in the service stand.

Remove the user access plate.

Note: There are two RAM expansion slots on the computer. One slot (top of the logic board) accepts the factory-installed standard PC-133 168-pin DIMM. The other slot (bottom of logic board) accepts a standard PC-133 144-pin SO-DIMM and is accessible on the bottom of the computer. Only the SO-DIMM slot is accessible by the user.

Memory, SO-DIMM (user-installable)

iMac (17-inch Flat Panel) Take Apart - 7

Procedure

1.Unplug all cables from the computer except the power cord.

2.Important: To avoid electrostatic discharge, always ground yourself by touching metal before you touch any parts or install any components inside the computer. To avoid static electricity building back up in your body, do not walk around the room until you have completed the installation and closed the computer.

3.Touch a metal surface inside the computer to ground yourself.

4.Unplug the power cord.

5.Push the tabs outward to release the memory.

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Memory, SO-DIMM (user-installable)

6. Remove the memory from the slot.

Memory, SO-DIMM (user-installable)

iMac (17-inch Flat Panel) Take Apart - 9

Bottom Housing

Tools

This procedure requires the following tools:

• Torx-15 screwdriver

Part Location

Preliminary Steps

Before you begin, do the following:

Position the computer in the service stand.

Remove the user access plate.

10 - iMac (17-inch Flat Panel) Take Apart

Bottom Housing

Procedure

1. Rotate the base so the optical drive door is on the right. Remove the four torx screws.

Replacement Note: These torx screws must be tightened to at least 17 in.-lbs. If you do not have a torque driver, you will have to make sure these screws are tightened by hand FIRMLY, BUT NOT FORCIBLY. Or, purchase the service tool (076-0899) in order to ensure the thermal pipe is firmly mated with the top base. If the bottom housing is not securely attached to the base in this fashion, the CPU may overheat and become damaged. For more information, refer to “Thermal Paste Application’” in this chapter. Rotate the base so that the optical drive door is on the right.

iMac (17-inch Flat Panel) Take Apart - 11

2.Gently open the bottom housing in the direction of the arrow. Note: Cables are still attached to the logic board.

12 - iMac (17-inch Flat Panel) Take Apart

3.Disconnect the following:

A Power supply connector

B Hard drive/optical drive data cable

C AC line filter connector

D AirPort antenna connector

E Plastic cable retainer and video cable

F Grounding screw

4. Set the bottom housing aside.

Warning: Whenever the bottom housing is opened for service, you must do two things:

1.You must clean the original thermal film from all thermal interface mating surfaces, and reapply thermal paste to the mating surfaces on the thermal pipe.

2. You must tighten the four torx screws on the bottom housing to a minimum of 17 in.-lbs. Use a torque driver (service tool 076-0899) to ensure that the thermal pipe is firmly mated with the top base. If you do not have a torque driver, you must make sure the screws are tightened by hand FIRMLY, BUT NOT FORCIBLY.

Warning: Failure to follow these steps could cause the computer to overheat and damage internal components.

Refer to the topic “Thermal Paste Application” for detailed information.

iMac (17-inch Flat Panel) Take Apart - 13

Thermal Paste Application

Tools

This procedure requires the following tools:

Plastic stylus or plastic spatula to remove the old thermal paste

Plastic stylus or plastic spatula to spread the thermal paste

Thermal paste (922-4757)

Part Location

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Thermal Paste Application

Apple iMac (17-inch Flat Panel) 02-09 Service Manual

Procedure

1.Thoroughly clean the original thermal film from the mating surfaces (circled below) of the bottom housing and thermal pipe. Use a plastic stylus to scrape the surfaces clean. Note: Do not use an abrasive material or liquid cleaner.

2. Squeeze a thin film of thermal paste onto the mating surfaces of the thermal pipe.

Thermal Paste Application

iMac (17-inch Flat Panel) Take Apart - 15

3. Replace the bottom housing.

Warning: The bottom housing has four torx screws that must be tightened to at least 17 in.-lbs. Use a torque driver (service tool 076-0899) to ensure that the thermal pipe is firmly mated with the top base. If you do not have a torque driver, you must make sure the screws are tightened by hand FIRMLY, BUT NOT FORCIBLY.

Warning: Failure to apply the thermal paste as described in this procedure, and failure to tighten the torx screws as directed, could cause the computer to overheat and damage internal components.

Refer to the topic “Thermal Paste Application” for detailed information.

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Thermal Paste Application

RJ-11 Modem Filter Board

Tools

This procedure requires the following tools:

• Torx-6 screwdriver

Part Location

Preliminary Steps

Before you begin, do the following:

Position the computer in the service stand.

Remove the user access plate.

Remove the bottom housing.

RJ-11 Modem Filter Board

iMac (17-inch Flat Panel) Take Apart - 17

Procedure

1. Remove two screws and disconnect the cable from the modem.

2. Remove the RJ-11 board from the I/O port.

Warning: Whenever the bottom housing is opened for service, you must do two things:

1.You must clean the original thermal film from all thermal interface mating surfaces, and reapply thermal paste to the mating surfaces on the thermal pipe.

2. You must tighten the four torx screws on the bottom housing to a minimum of 17 in.-lbs. Use a torque driver (service tool 076-0899) to ensure that the thermal pipe is firmly mated with the top base. If you do not have a torque driver, you must make sure the screws are tightened by hand FIRMLY, BUT NOT FORCIBLY.

Warning: Failure to follow these steps could cause the computer to overheat and damage internal components.

Refer to the topic “Thermal Paste Application” for detailed information.

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RJ-11 Modem Filter Board

Modem

Tools

This procedure requires the following tools:

• Torx-8 screwdriver

Part Location

Preliminary Steps

Before you begin, do the following:

Position the computer in the service stand.

Remove the user access plate.

Remove the bottom housing.

Modem

iMac (17-inch Flat Panel) Take Apart - 19

Procedure

1. Remove two screws and disconnect the cable.

2. Lift the modem from the connector on the logic board.

Warning: Whenever the bottom housing is opened for service, you must do two things:

1.You must clean the original thermal film from all thermal interface mating surfaces, and reapply thermal paste to the mating surfaces on the thermal pipe.

2. You must tighten the four torx screws on the bottom housing to a minimum of 17 in.-lbs. Use a torque driver (service tool 076-0899) to ensure that the thermal pipe is firmly mated with the top base. If you do not have a torque driver, you must make sure the screws are tightened by hand FIRMLY, BUT NOT FORCIBLY.

Warning: Failure to follow these steps could cause the computer to overheat and damage internal components.

Refer to the topic “Thermal Paste Application” for detailed information.

20 - iMac (17-inch Flat Panel) Take Apart

Modem

Memory (factory-installed)

Tools

This procedure requires the following tools:

• No tools are required

Part Location

Note: The factory-installed memory slot is identified as Slot J13 by Apple Hardware Test and Apple System Profiler.

Preliminary Steps

Before you begin, do the following:

Position the computer in the service stand.

Remove the user access plate.

Remove the bottom housing.

Memory (factory-installed)

iMac (17-inch Flat Panel) Take Apart - 21

Procedure

1.Push down on the ejector tabs to release the memory module.

2.Pull the memory up and out of the slot.

Warning: Whenever the bottom housing is opened for service, you must do two things:

1.You must clean the original thermal film from all thermal interface mating surfaces, and reapply thermal paste to the mating surfaces on the thermal pipe.

2. You must tighten the four torx screws on the bottom housing to a minimum of 17 in.-lbs. Use a torque driver (service tool 076-0899) to ensure that the thermal pipe is firmly mated with the top base. If you do not have a torque driver, you must make sure the screws are tightened by hand FIRMLY, BUT NOT FORCIBLY.

Warning: Failure to follow these steps could cause the computer to overheat and damage internal components.

Refer to the topic “Thermal Paste Application” for detailed information.

22 - iMac (17-inch Flat Panel) Take Apart

Memory (factory-installed)

Battery

Tools

This procedure requires the following tools:

• No tools are required

Part Location

Preliminary Steps

Before you begin, do the following:

Position the computer in the service stand.

Remove the user access plate.

Remove the bottom housing.

Battery

iMac (17-inch Flat Panel) Take Apart - 23

Procedure

1. Using a flatblade screwdriver, gently pry the battery from the battery holder.

Warning: Whenever the bottom housing is opened for service, you must do two things:

1.You must clean the original thermal film from all thermal interface mating surfaces, and reapply thermal paste to the mating surfaces on the thermal pipe.

2. You must tighten the four torx screws on the bottom housing to a minimum of 17 in.-lbs. Use a torque driver (service tool 076-0899) to ensure that the thermal pipe is firmly mated with the top base. If you do not have a torque driver, you must make sure the screws are tightened by hand FIRMLY, BUT NOT FORCIBLY.

Warning: Failure to follow these steps could cause the computer to overheat and damage internal components.

Refer to the topic “Thermal Paste Application” for detailed information.

24 - iMac (17-inch Flat Panel) Take Apart

Battery

Logic Board

Tools

This procedure requires the following tools:

Phillips #2 screwdriver (for the plastic screw)

Torx-15 screwdriver

Part Location

Note: The battery, RJ-11 board, AirPort card, modem, I/O port covers, and memory (on the top and the bottom of the logic board) need to be removed from the logic board before returning the board to Apple for service.

Preliminary Steps

Before you begin, do the following:

Position the computer in the service stand.

Remove the user access plate.

Remove the bottom housing.

Remove the RJ-11 board.

Logic Board

iMac (17-inch Flat Panel) Take Apart - 25

Procedure

1. Remove the three metal torx screws and the one plastic screw.

26 - iMac (17-inch Flat Panel) Take Apart

Logic Board

2.Grab the logic board by the battery retainer and the hard drive connector. Lift the board and pull back to release the board from the bottom housing and I/O ports. Note: The I/O port covers may come out with the logic board when it’s removed.

3. Remove the I/O port covers from the logic board.

Warning: Whenever the logic board is separated from the bottom housing, you must install new thermal pads to three surfaces on the bottom housing. Failure to apply these pads whenever the logic board is separated from the bottom housing could cause these parts to overheat and could damage internal components.

Note: AFTER installing new thermal pads, if you must briefly re-separate the logic board from the housing, it is OK to retain the same, new pads as long as they are not handled excessively. Refer to “Thermal Pad Installation” in this chapter for detailed information.

Warning: Whenever the bottom housing is opened for service, you must do two things:

1.You must clean the original thermal film from all thermal interface mating surfaces, and reapply thermal paste to the mating surfaces on the thermal pipe.

2. You must tighten the four torx screws on the bottom housing to a minimum of 17 in.-lbs. Use a torque driver (service tool 076-0899) to ensure that the thermal pipe is firmly mated with the top base. If you do not have a torque driver, you must make sure the screws are tightened by hand FIRMLY, BUT NOT FORCIBLY.

Warning: Failure to follow these steps could cause the computer to overheat and damage internal components.

Refer to the topic “Thermal Paste Application” for detailed information.

Logic Board

iMac (17-inch Flat Panel) Take Apart - 27

I/O Port Covers

Tools

This procedure requires the following tools:

• No tools are required

Part Location

Preliminary Steps

Before you begin, do the following:

Position the computer in the service stand.

Remove the user access plate.

Remove the bottom housing.

Remove the RJ-11 board

Remove the logic board.

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I/O Port Covers

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