Apple iBook G4 Service Manual



Service Source

iBook G4

iBook G4

iBook G4 (Early 2004)

Updated July 1, 2005

© 2003 Apple Computer, Inc. All rights reserved.



Service Source

Take Apart

iBook G4

iBook G4 (Early 2004)

© 2003 Apple Computer, Inc. All rights reserved.

General Information

Overview

To easily distinguish this computer from previous iBook models, note these characteristics:

• "iBook G4" identifier on display bezel

• Slot-load optical drive

• Mac OS X version 10.3 operating system

General Information

iBook G4 Take Apart -

2

The ports on the left side of the computer are

• RJ11 modem port

• Ethernet port

• FireWire port

• Two USB ports

• External display connector

• Headphone port

This table shows the iBook G4 product configurations at initial product introduction:

Configuration Education Good Better* Best*

Display Size 12.1 inch 12.1 inch 14.1 inch 14.1 inch

Video RAM 32 VRAM 32 VRAM 32 VRAM 32 VRAM

Processor 800 MHz 800 MHz 933 MHz 1 GHz

Optical Drive CD-ROM Combo (DVD-

ROM/CD-RW)

Hard Drive 30 GB 30 GB 40 GB 60 GB

Memory 128 MB RAM 256 MB RAM 256 MB RAM 256 MB RAM

For servicing the 14.1-inch models, refer to the iBook G4 (14-inch) service manual.

*

This table shows the iBook G4 (Early 2004) product configurations at initial product
introduction:

Configuration Good Better* Best*

Display Size 12.1 inch 14.1 inch 14.1 inch

Video RAM 32 VRAM 32 VRAM 32 VRAM

Processor 1.0 GHz 1.0 GHz 1.2 GHz

Optical Drive Combo (DVD-

ROM/CD-RW)

Hard Drive 30 GB 40 GB 60 GB

Memory 256 MB RAM 256 MB RAM 256 MB RAM

Combo (DVD­ROM/CD-RW)

Combo (DVD­ROM/CD-RW)

Combo (DVD­ROM/CD-RW)

Combo (DVD­ROM/CD-RW)

3 -

iBook G4 Take Apart

For servicing the 14.1-inch models, refer to the iBook G4 (14-inch) service manual.

*

General Information

New Procedures

If you are familiar with taking apart iBook computers, you will notice some differences with
this iBook model:

• Slot-load optical drive

• AirPort Extreme Card option

• Bluetooth option

• The number and types of screws differ somewhat from previous models.

Note:

The top and bottom EMI shields are now marked with screw identifiers for most of
the screw locations. The screw identifiers are in the form of "M2x_" where the last digit
indicates the approximate screw length. For example, a marking of "M2x3" indicates a 3.5­mm long screw. Use the identifiers as a guide when reassembling the computer.

Tools

The following tools are recommended for the Take Apart procedures:

• Coin

• ESD wriststrap and mat

• Magnetized #0 Phillips screwdriver

• Jeweler’s flat-blade screwdriver

• Small soft cloth

• Torx T8 screwdriver

• 2.0 mm hex nut driver

• Needlenose pliers

• Torx T6 screwdriver or 5/32 hex driver (for display housing)

• Black stick (or other nonconductive nylon or plastic tool)

Note:

compartments (such as a plastic ice cube tray).

General Information

To organize the screws you remove from the assembly, use a tray with divided

iBook G4 Take Apart -

4

Serial Number Location

In this computer, the product serial number is located in two places:

• Battery bay

• Top case underneath the keyboard

5 -

iBook G4 Take Apart

General Information

Battery

Tools

The only tool required for this procedure is a coin.

Part Location

Battery

Preliminary Steps

Warning: Always shut down the computer before opening it to avoid damaging its
internal components or causing injury. After you shut down the computer, the
internal components can be very hot. Let the computer cool down for 30 minutes
before continuing.

Procedure

Warning:

performing this procedure.

1. Place the computer on a clean, flat surface.

2. Shut down the computer and wait thirty minutes before continuing.

If the computer has been recently operating, allow it to cool down before

iBook G4 Take Apart -

6

3. Disconnect the power cord and any other cables connected to the computer.

4. Close the computer, turn it over, and locate the battery latch.

Use a coin to turn the battery latch 1/4 turn clockwise to unlock the battery. Gently
remove the battery.

Removing the battery will prevent you from accidentally turning on the computer.

Warning: Removing the battery before shutting down the computer may result
in data loss.

7 -

iBook G4 Take Apart

5. Install the replacement battery.

6. Reconnect the power cord and any other cables that were connected and restart the

computer.

Note: You may need to reset the date and time (using the Date & Time control panel
in System Preferences).

Warning: Never turn on the computer unless all of its internal and external
parts are in place and it is fully reassembled. Operating the computer when it is
missing parts can damage the computer or cause injury.

Battery

Foot and Foot Socket

Tools

• Foot kit

• Soft cloth

• Needlenose pliers

• #0 Phillips jeweler’s screwdriver

Caution:

replace the foot and foot socket.

To avoid scratching the case, use caution when using tools to remove and

Part Location

Preliminary Steps

Warning: Always shut down the computer before opening it to avoid damaging its
internal components or causing injury. After you shut down the computer, the
internal components can be very hot. Let the computer cool down for 30 minutes
before continuing.

Foot and Foot Socket

iBook G4 Take Apart -

8

Procedure

1. Place the computer on a clean, flat surface or soft cloth.

2. Shut down the computer and wait thirty minutes before continuing.

3. Disconnect the power cord and any other cables connected to the computer.

4. Close the computer, turn it over, and locate the foot that needs replacement.

5.

Caution:

replace the foot.

If any portion of the rubber foot remains on the bottom case, use tweezers or
needlenose pliers to carefully remove it.

To avoid scratching the case, use caution when using tools to remove and

9 -

iBook G4 Take Apart

6. Use a screwdriver to remove the screw and socket from the bottom case.

Foot and Foot Socket

7. Install the new socket. For the best fit, do not reuse the old socket.

Replacement Note: When replacing the socket, notice the wedge area on the

bottom of the socket and the matching wedge area in the bottom case. Position the
socket in the bottom case to align the wedge areas. You might need to rotate the
socket slightly until it sits flat into the bottom case.

8.

With the socket sitting flat in the bottom case, install the screw.

Foot and Foot Socket

iBook G4 Take Apart -

10

9. Before installing the replacement foot, check the shape.

The socket and foot are keyed and may look like one of these:

• Socket with three identical openings to match the three identical raised areas on
the foot

• Socket with three identical openings and a fourth indented area to match the four
raised areas on the foot

11 -

iBook G4 Take Apart

Foot and Foot Socket

10. Install the matching foot by aligning its textured surface to the open areas in the
socket. With gentle even pressure, press the foot onto the socket.

11. Reassemble and test the computer.

Foot and Foot Socket

iBook G4 Take Apart -

12

Keyboard and RAM Shield

Tools

• #0 Phillips screwdriver

• Jeweler’s flat-blade screwdriver (if keyboard is locked)

• Small soft cloth (if an optional AirPort Extreme Card is installed)

Part Location

13 -

iBook G4 Take Apart

Preliminary Steps

Before you begin, remove the battery.

Keyboard and RAM Shield

Procedure

1. Raise the display so you can access the keyboard.

2. Make sure the keyboard locking screw, located in the small plastic tab next to the Num
Lock key, is not in the locked position. The iBook comes with the keyboard unlocked,
so unless you or someone else locked the keyboard, you can skip this step.

To unlock the keyboard, turn the screw 1/2 turn.

Keyboard and RAM Shield

iBook G4 Take Apart -

14

3. Release the keyboard by pulling down on the keyboard release tabs (located to the left
of the F1 and F12 keys), then lift the top portion of the keyboard up slightly, and toward
the display.

4. Flip the keyboard over and lay it on the palm rest.

15 -

iBook G4 Take Apart

Keyboard and RAM Shield

5. Touch a metal surface on the inside of the computer to discharge any static electricity,
as shown.

Important:

touching the computer’s framework 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.

6. If the computer has the optional AirPort Extreme Card installed, unlatch the flexible
wire bracket that secures the card.

To avoid electrostatic discharge damage, always ground yourself by

Use the pull-tab on the card to remove it from the slot. (You do not need to
disconnect the antenna.)

Note:

AirPort Extreme Card and the surface of the iBook.

Keyboard and RAM Shield

To avoid scratching the computer’s case, place a soft cloth between the

iBook G4 Take Apart -

16

7. If an AirPort Extreme Card is not installed, unlatch the flexible wire bracket to release
the AirPort antenna cable.

8. Remove the four screws that secure the RAM shield.

Replacement Note:

the RAM shield, make sure the antenna cable is routed as shown if there is no
AirPort Extreme Card.

Note the routing of the AirPort antenna cable. When reinstalling

17 -

iBook G4 Take Apart

Keyboard and RAM Shield

9. Lift the RAM shield out of the computer.

10. Route the AirPort antenna cable out of the slot in the RAM shield.

11. Locate the keyboard cable connector.

12. Firmly grasp the cable, and carefully pull it straight up until the connector releases.

Important:

Note:

Pull straight up; do not twist or pull the cable sideways.

If necessary, use your fingers to pry up the connector from side to side.

Keyboard and RAM Shield

iBook G4 Take Apart -

18

13. Install the replacement keyboard, RAM shield, and AirPort Extreme Card (if used).

Replacement Note:

and insert the lower end of the RAM shield in the keyboard well first.

Make sure the antenna cable fits into the slot in the RAM shield,

19 -

iBook G4 Take Apart

Keyboard and RAM Shield

Make sure the replacement keyboard is firmly seated:

• Flip the keyboard back toward the keyboard opening in the case.

• Hold the keyboard at a 45-degree angle above the keyboard opening, and insert

the tabs on the bottom edge of the keyboard into the slot under the edge of the
opening.

•

Important:

against the edge of the opening.

• Lay the keyboard flat into the keyboard opening.

• Pull down on the keyboard release tabs and then press down on the top portion of

the keyboard.

Make sure that all the tabs are seated and that the keyboard rests flush

Keyboard and RAM Shield

iBook G4 Take Apart -

20

AirPort Extreme Card

Tools

• Small soft cloth (if an optional AirPort Extreme Card is installed)

Part Location

21 -

iBook G4 Take Apart

Preliminary Steps

Before you begin, remove the following:

• Battery

• Keyboard (but do not disconnect the keyboard cable)

AirPort Extreme Card

Procedure

1. Touch a metal surface on the inside of the keyboard well to discharge any static
electricity.

Important:

touching the computer’s framework 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.

2. Lift up the flexible wire bracket that secures the card.

To avoid electrostatic discharge damage, always ground yourself by

3. Detach the antenna cable from the AirPort Extreme Card.

AirPort Extreme Card

iBook G4 Take Apart -

22

4. Use the pull-tab on the card to remove the card from the slot.

23 -

iBook G4 Take Apart

AirPort Extreme Card

5. Install the replacement AirPort Extreme Card into the slot.

6. Plug the AirPort antenna cable connector into the port on the end of the replacement
card. Make sure the connector is straight before inserting it into the card.

Use the wire bracket to secure the AirPort Extreme Card in place by inserting its
prongs into the slots in the RAM shield.

Note:

be routed as shown.

7. Reassemble and test the computer.

AirPort Extreme Card

If no replacement AirPort Extreme Card is to be installed, the antenna cable should

iBook G4 Take Apart -

24

Memory Card

Warning: Memory cards come in various specifications. Only install memory cards
that are approved for this computer.

Tools

The only tool required for this procedure is a small soft cloth (if an optional AirPort Extreme
Card is installed).

Part Location

25 -

iBook G4 Take Apart

Preliminary Steps

Before you begin, remove the following:

• Battery

• Keyboard and RAM shield (but do not disconnect the keyboard cable)

• AirPort Extreme Card

Memory Card

Procedure

1. Locate the installed memory card and brackets that secure the card on both sides.

2. Carefully spread the brackets away from the notches in the card until the card
releases on each side.

3. Pull the card up and out of the memory slot.

Memory Card

iBook G4 Take Apart -

26

4. Align the notch in the replacement memory card with the small tab in the memory slot.
Hold the card at a 30-degree angle, then push the card into the slot until it is firmly
seated.

Note:

If you feel resistance when inserting the card, try pushing one side at a time.

5. Gently push the top of the card down until the brackets snap onto both sides of the
memory card to lock it into place.

Warning: Apply gentle pressure to the memory card only. Pressing on nearby
connectors or components can cause electrical damage.

6. Reassemble and test the computer.

27 -

iBook G4 Take Apart

Memory Card

Bottom Case

Tools

• Soft cloth

• Torx T8 screwdriver or 2.0 mm hex nut driver

• Black stick (or other nonconductive nylon or plastic tool)

• #0 Phillips screwdriver

Part Location

Bottom Case

Preliminary Steps

Before you begin, remove the battery.

iBook G4 Take Apart -

28

Procedure

1. Place the computer upside down on a soft cloth.

2.

Important:

slip out of the screw head during removal.

Remove the three screws.

To avoid damaging the case, be careful that the screwdriver tip does not

29 -

iBook G4 Take Apart

Bottom Case

3. Using a black stick, pry up the three rubber feet from the metal sockets.

Note: When reassembling the computer, do not reuse the feet. Install three new
rubber feet.

4. Remove the three identical Phillips screws from the metal sockets.

5. Use a black stick to lift out the metal sockets.

Note: When reassembling the computer, note that the metal sockets are keyed.
Rotate them until they sit flat against the bottom case.

Bottom Case

iBook G4 Take Apart -

30

6. Remove the two identical Phillips screws next to the battery connector.

31 - iBook G4 Take Apart

Bottom Case

7. Note the locations of the slots on the bottom case pictured below. The computer frame
has tabs that fit into slots within the bottom case (six tabs in front; two on each side;
three in back). When using a black stick to pry off the bottom case, it helps to know
where the slots are as you free the tabs from the slots.

8. In the battery compartment, lift up the corner of the bottom case, and use a black stick
or jeweler’s flat-blade screwdriver to gently pry up the slot from the inner tabs on the
frame.

Bottom Case

iBook G4 Take Apart - 32

9. Starting at the battery compartment, use a black stick to carefully pry up the bottom
case from the computer.

10. Warning: To avoid damaging the sleep light and other delicate components, do

not insert the black stick too far into the computer as you free the bottom case
from the computer. Use just the tip of the black stick to pry up the bottom case.

11. Carefully work the black stick around the corners of the bottom case.

33 - iBook G4 Take Apart

Bottom Case

12. The bottom case fits snugly. Use moderate force to remove the tabs from the slots.

13. Loosen the tabs from the slot load area last.

Pull up on the port side of the bottom case.

Placing the black stick nearly parallel to the slot drive opening, carefully free the case
from the remaining tabs at the slot drive side of the computer.

Note: When reassembling the computer, be careful not to pinch any cables as
you press the bottom case back onto the computer. Check that the bottom case
shows no raised surfaces and is fully snapped into place before installing the
remaining screws, sockets, and feet.

Bottom Case

iBook G4 Take Apart - 34

14. If you are replacing any additional parts at this time, remove the two springs from the
battery compartment so they do not fall out and get lost.

Note: When reassembling the computer, make sure that the two springs in the
battery compartment are in place before installing the bottom case. Each spring has
a plastic cap on one end. The cap should fit securely on the spring, and the curved
side of the cap should be positioned against the inner frame. The springs have a
small amount of grease on them; do not wipe away the grease.

15. Install the replacement bottom case, and reassemble and test the computer.

35 - iBook G4 Take Apart

Bottom Case

Bottom Shield

Tools

• Soft cloth

• #0 Phillips screwdriver

• Black stick (or other nonconductive nylon or plastic tool)

Note: To organize the screws you remove from the computer, use a tray with divided
compartments (such as a plastic ice cube tray).

Part Location

Bottom Shield

Preliminary Steps

Before you begin, remove the following:

• Battery

• Bottom case

iBook G4 Take Apart - 36

Procedure

1. With the computer on a soft cloth, remove the four Phillips screws from the bottom
case.

2. Peel up, but do not remove, any pieces of tape.

Note: When reassembling the computer, reuse the tape to secure the replacement
bottom shield.

Replacement Note: When reassembling the computer, install the replacement
bottom shield so that the corner of the shield closest to the ports is secured first.
(With the computer oriented as shown, this corner is the uppermost right corner.)
When reinstalling the screws, install them in the order shown.

3. Peel up the tape, if present, at the computer latch. If the tape tears, replace it with new
aluminum tape.

37 - iBook G4 Take Apart

Bottom Shield

4. Warning: Do not bend the bottom shield.

Lift the bottom shield off the computer.

5. Note: The two springs in the battery compartment can become loose. When
reassembling the computer, make sure that the two springs are in place before
installing the bottom case. Each spring has grease on the coils, and each has a plastic
cap on one end. Make sure the cap fits securely on the spring, and the curved side of
the cap is positioned against the inner frame.

Bottom Shield

iBook G4 Take Apart - 38

6. Install the replacement bottom shield, and reassemble and test the computer.

Replacement Note: Before installing the bottom shield, make sure cables are routed
as shown.

39 - iBook G4 Take Apart

Bottom Shield

How to Add Spiral Tubing to Protect the Inverter Cable

The inverter cable can be pinched or damaged during reassembly of the bottom case. To
protect the inverter cable, add spiral tubing to the cable, as shown in this procedure.

Important: Do not pull, twist, or strain the cable as you perform this procedure.

Tools

• Soft cloth

• Black stick (or other nonconductive nylon or plastic tool)

Preliminary Steps

Before you begin, remove the following:

• Battery

• Bottom case

• Bottom shield

Procedure

1. With the computer on a soft cloth, peel up the tape that secures the inverter cable to
the frame.

2. Disconnect the inverter cable from the bottom of the logic board.

How to Add Spiral Tubing to Protect the Inverter Ca-

iBook G4 Take Apart - 40

3. Release the cable from the channel in the frame.

4. Holding the cable steady, wrap the spiral tubing around the cable at the clutch.

5. Make sure the tubing covers the cable where it exits the display.

6. Route the cable through the channel in the frame, and connect it to the logic board.

41 - iBook G4 Take Apart

How to Add Spiral Tubing to Protect the Inverter Ca-

7. Important: Create enough slack in the cable near the connector to relieve tension on
the cable. Secure the connector and cable with a strip of Kapton tape, as shown.

8. Reassemble and test the computer.

How to Add Spiral Tubing to Protect the Inverter Ca-

iBook G4 Take Apart - 42

DC-In Board

Tools

• Soft cloth

• #0 Phillips screwdriver

• Black stick (or other nonconductive nylon or plastic tool)

Part Location

Preliminary Steps

Before you begin, remove the following:

• Battery

• Bottom case

• Bottom shield

43 - iBook G4 Take Apart

DC-In Board

Procedure

1. With the computer on a soft cloth, disconnect the DC-in cable from the underside of
the logic board.

2. Remove any tape that holds the cable to the frame or logic board.

3. Route the cable from the guides in the chassis.

DC-In Board

iBook G4 Take Apart - 44

4. Remove the two identical screws from the DC-in board.

5. Tilt up the DC-in board, and pivot it out of the frame.

6. Remove the DC-in board from the computer assembly.

7. Install the replacement DC-in board, and reassemble and test the computer.

45 - iBook G4 Take Apart

DC-In Board

Fan

Tools

• Soft cloth

• #0 Phillips screwdriver

• Black stick (or other nonconductive nylon or plastic tool)

Part Location

Fan

Preliminary Steps

Before you begin, remove the following:

• Battery

• Bottom case

• Bottom shield

iBook G4 Take Apart - 46

Procedure

1. With the computer on a soft cloth, remove any tape that holds the fan and cable in
place.

2. Remove the four identical screws from the fan.

Replacement Note: When reassembling the computer, the replacement fan might
include a piece of tape that secures the cable to the body of the fan. Make sure the
tape is not blocking the fan blade movement. Install the screws in the order shown.

47 - iBook G4 Take Apart

Fan

3. Lift the fan from the computer, and use a black stick to disconnect the connector from
the logic board.

4. Install the replacement fan, and reassemble and test the computer.

Replacement Note: Before installing the fan, make sure it is securely connected,
and fresh tape is applied.

Fan

iBook G4 Take Apart - 48

Top Case

Tools

This procedure requires the following tools:

• Soft cloth

• Jeweler’s flat-blade screwdriver

• #0 Phillips screwdriver

• Black stick (or other nonconductive nylon or plastic tool)

Note: To organize the screws you remove from the computer, use a tray with divided
compartments (such as a plastic ice cube tray).

Part Location

49 - iBook G4 Take Apart

Top Case

Preliminary Steps

Before you begin, remove the following:

• Battery

• Keyboard and RAM shield

• AirPort Extreme Card

• Memory card

• Bottom case

• Bottom shield

• DC-in board

Procedure

1. With the computer upside down on a soft cloth, remove the two screws from the
battery bay.

Top Case

iBook G4 Take Apart - 50

2. Turn over the computer.

3. Remove the three identical screws from the keyboard well near the slot load drive
opening.

4. Remove the remaining screws in the keyboard well:

• Using a small flat-blade screwdriver, pry up the magnet. Then remove the 4.5-mm

long screw beneath it.

• 6-mm long screw with large screw head at upper left corner of keyboard well

• 6-mm long screw at lower left corner of keyboard well

• 6-mm long screw with large screw head near keyboard cable connector

Note: When reassembling the computer, be sure to install the magnet over the
screw.

Replacement Note: When reinstalling the top case screws, install them in the order
shown.

51 - iBook G4 Take Apart

Top Case

5. Peel up the cosmetic tape that runs the length of the speaker wire, but make sure that
the speaker wire beneath it remains in place. Set aside the speaker wire tape.

Note: When reassembling the computer, reuse the speaker wire tape, but make sure
the speaker wire is lying flat on the top shield, as shown, before applying the tape.

Note: When reassembling the computer, ensure that the shrink tubing section of the
speaker cable sticks to the top shield and is routed as shown.

Top Case

iBook G4 Take Apart - 52

6. Use a soft cloth to protect the computer.

7. Using a black stick, begin to carefully separate the top case from the computer
assembly.

Reposition the computer as you work around the top case to open up the seam that
joins the top case and bottom case.

8. While continuing to loosen the top case, use caution around the battery bay. If
necessary, flex the inner frame to release that corner of the top case.

53 - iBook G4 Take Apart

Top Case

9. As you begin to loosen the top case, check that the trackpad cable (orange flex cable)
has disconnected from the top case. Or use a black stick to disconnect it.

Replacement Note: When the top case is removed, the trackpad cable automatically
disconnects from the logic board. However, when installing the top case, use a black
stick to press down on the connector, and make sure the trackpad cable connects
securely to the four pins on the logic board.

Top Case

iBook G4 Take Apart - 54

10. Place the computer on its side, and with most of the top case loosened, tilt the top
case away from the computer latch.

Warning: The top case is connected to the computer assembly with delicate
cables. Do not remove the top case until the cables are disconnected (see the
next steps).

Warning: When performing this step, make sure the speaker cable and shorter
power switch cable are not strained.

11. With the top case loosened, tilt the top case away from the computer assembly so you
can see the shorter power switch cable and the longer speaker cable. Do not
disconnect them yet.

55 - iBook G4 Take Apart

Top Case

12. Place the computer upright, and move the top case off center. Use a black stick to
carefully disconnect the two cables from the logic board.

Top Case

iBook G4 Take Apart - 56

Replacement Note: When connecting the speaker cable, make sure the wires are

routed under the top shield as shown.

13. Remove the top case from the computer.

57 - iBook G4 Take Apart

Top Case

14. Before installing the replacement top case, make sure it includes the following:

• Speaker set

• Power button and board (under left speaker)

• Speaker cable and power switch cable

• Trackpad assembly with board and cable

• Display latch

• Sleep magnet (on palm rest below left speaker)

– Replacement Note: The sleep magnet can pop off during the top case removal.

Make sure the sleep magnet is in place when replacing the top case.

Top Case

Important: Make sure you transfer the original serial number label and Ethernet label

from the old top case to the replacement top case. You can use a black stick to
carefully peel up a corner of the label. Then peel off the label completely and apply it
to the replacement top case. Make sure that the labels lie completely flat so they do
not interfere with the battery compartment.

iBook G4 Take Apart - 58

15. Before installing the top case, make sure a foam pad is positioned correctly on the
metallic surface by the trackpad board.

If the foam pad is missing, order a trackpad kit (Apple part number 076-1078), and
apply one of the adhesive foam pads.

59 - iBook G4 Take Apart

Top Case

16. Install the replacement top case, and reassemble and test the computer.

Important: If the new top case you are using to replace the old top case includes a

top shield, you must replace the top case and top shield as a set. Refer to "Top
Shield" in this chapter for removal instructions. Do not use the old top shield if a new
top shield is included in the top case kit.

Note: When installing the replacement top case, connect the power switch cable

connector (the shorter cable) first. Then connect the speaker cable connector. Do not
strain the cables.

Replacement Note: The trackpad cable (orange flex cable) is barely visible

underneath the lower center of the keyboard well. When installing the top case, align
the trackpad connector over the four pins on the logic board. Then use a black stick
to press the connector into place. Make sure the trackpad cable is installed securely
on the logic board connector under the case.

Top Case

Warning: When reassembling the computer, be careful not to pinch any cables
as you press the top case back onto the computer. Check that the top case
shows no raised surfaces and is fully snapped into place before installing the
remaining screws.

iBook G4 Take Apart - 60

Sleep Light Board

Tools

• Soft cloth

• #0 Phillips screwdriver

• Black stick (or other nonconductive nylon or plastic tool)

Part Location

Preliminary Steps

Before you begin, remove the following:

• Battery

• Keyboard and RAM shield

• AirPort Extreme Card

• Memory card

• Bottom case

• Bottom shield

• DC-in board

• Top case

61 - iBook G4 Take Apart

Sleep Light Board

Procedure

1. With the computer on a soft cloth, note the location of the sleep light board connector
on the logic board.

Note: When reassembling the computer, make sure the sleep light board is

positioned as shown and does not get caught between the top and bottom case.

2. Disconnect the cable that attaches the sleep light board to the logic board.

Caution: Be careful not to bend the spring clip next to the connector.

3. Turn over the computer and remove the single screw from the sleep light holder and
frame.

Sleep Light Board

iBook G4 Take Apart - 62

4. Remove the sleep light board and holder from the frame.

5. Install the replacement sleep light board, and reassemble and test the computer.

63 - iBook G4 Take Apart

Sleep Light Board

Display Latch

Tools

This procedure requires the following tools:

• Soft cloth

• Black stick (or other nonconductive nylon or plastic tool)

Part Location

Display Latch

Preliminary Steps

Before you begin, remove the following:

• Battery

• Keyboard and RAM shield

• AirPort Extreme Card

• Memory card

• Bottom case

• Bottom shield

• DC-in board

• Top case

iBook G4 Take Apart - 64

Procedure

1. With the top case on a soft cloth, note the routing of the trackpad flex cable to the
trackpad board.

2. Using your fingernail or a black stick, tilt up the brown hinged locking connector.

3. With the locking connector tilted up, slide out the trackpad cable.

4. Carefully peel up the trackpad cable from the top case.

5. Holding the top case steady, press the latch button in and under the lip of the top case.
You might need to flex the latch opening somewhat to remove it from the top case.

65 - iBook G4 Take Apart

Display Latch

6. Install the replacement display latch by tilting it onto the trackpad assembly, pressing
the latch button, and feeding the latch into the latch opening in the top case. Test that
the latch button works easily.

7. Reassemble and test the computer.

Warning: When reassembling the computer, be careful not to pinch any cables
as you press the top case back onto the computer. Check that the top case
shows no raised surfaces and is fully snapped into place before installing the
remaining screws.

Display Latch

iBook G4 Take Apart - 66

Top Shield

Tools

• Soft cloth

• #0 Phillips screwdriver

• Black stick (or other nonconductive nylon or plastic tool)

Note: To organize the screws you remove from the computer, use a tray with divided

compartments (such as a plastic ice cube tray).

Part Location

Preliminary Steps

Before you begin, remove the following:

• Battery

• Keyboard and RAM shield

• AirPort Extreme Card

• Memory card

67 - iBook G4 Take Apart

Top Shield

• Bottom case

• Bottom shield

• DC-in board

• Top case

Procedure

1. With the computer on a soft cloth, remove the 15 Phillips screws:

• Fourteen 3-mm long screws

• One 5.5-mm long screw

Top Shield

iBook G4 Take Apart - 68

Replacement Note: When replacing the shield, install the screws in the order shown.

69 - iBook G4 Take Apart

Top Shield

2. Using a black stick, carefully peel up, but do not remove, any foil strips or pieces of
tape.

Note: When reassembling the computer, reuse the foil and tape to secure the

replacement top shield.

3. Warning: Do not bend the top shield.

Lift the top shield off the computer, being careful where it might catch on the
computer assembly.

Top Shield

4. Install the replacement top shield, and reassemble and test the computer.

Replacement Note: With the top case removed, the small EMI strip at the RJ11

cable can become loose. Make sure it is installed before replacing the top shield.

iBook G4 Take Apart - 70

Replacement Note: With the top shield removed, check the hard drive stiffener.

Make sure it has a thin, foam strip backing. The stiffener can become loose. Make
sure it is positioned over the hard drive and frame before replacing the top shield.

If the foam backing is missing, order a trackpad kit (Apple part number 076-1078),
and replace the stiffener with one from the kit.

71 - iBook G4 Take Apart

Top Shield

Important: If you are installing the same top shield, remove the EMI finger by

twisting it off of the shield. If you are replacing the top shield, make sure the shield
does not have the EMI finger attached. A new foam pad on the trackpad overrides
the need for the EMI finger.

Top Shield

iBook G4 Take Apart - 72

Replacement Note: Before installing the top shield, make sure cables are routed as

shown, and fresh tape is installed where shown.

73 - iBook G4 Take Apart

Top Shield

I/O Bezel

Tools

• Soft cloth

• #0 Phillips screwdriver

• Black stick (or other nonconductive nylon or plastic tool)

Part Location

I/O Bezel

Preliminary Steps

Before you begin, remove the following:

• Battery

• Keyboard and RAM shield

• AirPort Extreme Card

• Memory card

• Bottom case

• Bottom shield

• DC-in board

• Top case

• Top shield

iBook G4 Take Apart - 74

Procedure

1. With the computer on a soft cloth, remove the two screws from the I/O bezel.

2. Remove the I/O bezel from the computer frame.

Note: When reassembling the computer, make sure that the I/O bezel is level and fits

over all ports.

75 - iBook G4 Take Apart

I/O Bezel

3. Install the replacement I/O bezel, and reassemble and test the computer.

Note: When installing the replacement I/O bezel, make sure the bezel shield and the
mylar panel fits over the underside of the logic board, as shown below.

Replacement Note: Note the placement of the long EMI strip that covers the FireWire
port, USB ports, and display port. Make sure it is held in place by the single screw before
reassembling the computer.

I/O Bezel

iBook G4 Take Apart - 76

RJ11 Modem Cable

Tools

• Soft cloth

• Black stick (or other nonconductive nylon or plastic tool)

Part Location

Preliminary Steps

Before you begin, remove the following:

• Battery

• Keyboard and RAM shield

• AirPort Extreme Card

• Memory card

• Bottom case

• Bottom shield

• DC-in board

• Top case

• Top shield

• I/O bezel

77 - iBook G4 Take Apart

RJ11 Modem Cable

Procedure

1. With the computer on a soft cloth, lift up the modem sleeve and disconnect the RJ11
modem cable from the modem board.

2. Guide the cable up through the metal channel.

3. While supporting the computer assembly, slide the modem port forward and off of the
logic board.

4. Install the replacement RJ11 modem cable, and reassemble and test the computer.

RJ11 Modem Cable

iBook G4 Take Apart - 78

Hard Drive

Tools

• Soft cloth

• #0 Phillips screwdriver

• Black stick (or other nonconductive nylon or plastic tool)

• Torx T8 screwdriver

Note: To organize the screws you remove from the computer, use a tray with divided
compartments (such as a plastic ice cube tray).

Part Location

Preliminary Steps

Before you begin, remove the following:

• Battery

• Keyboard and RAM shield

• AirPort Extreme Card

79 - iBook G4 Take Apart

Hard Drive

• Memory card

• Bottom case

• Bottom shield

• DC-in board

• Top case

• Top shield

Procedure

1. With the computer on a soft cloth, note the location of the hard drive and how the
ribbon cable is routed.

2. Tilt up the computer assembly and disconnect the hard drive cable from the underside
of the logic board.

3. Important: To avoid pinching the cable, perform the remaining steps with the end of
the cable hanging free over a table edge.

Hard Drive

iBook G4 Take Apart - 80

4. Remove the two identical screws at the hard drive bracket.

5. From the bracket side, tilt up the hard drive, and hold it by the sides of the drive.

Warning: Handle the hard drive at the sides only. Do not touch or press
anywhere else on the drive.

81 - iBook G4 Take Apart

Hard Drive

6. Route the end of the hard drive cable through the opening in the computer frame.

7. Disconnect the hard drive bracket (with grommets attached) by pulling it straight off
the drive.

Note: When reassembling the computer, transfer the bracket (including the
grommets) to the replacement hard drive so the grommets fit over the screw heads.

Hard Drive

iBook G4 Take Apart - 82

8. Warning: Handle the hard drive at the sides only. Do not touch or press
anywhere else on the drive.

Warning: If the ribbon cable connector is pulled out unevenly, some connector
pins could become bent and damaged.

Using even force, pull the looped handle to disconnect the ribbon cable from the
connector on the end of the hard drive.

9. Remove the four black Torx T8 screws from the ends of the hard drive, and transfer the
screws to the replacement drive.

10. Install the replacement hard drive, and reassemble and test the computer.

83 - iBook G4 Take Apart

Hard Drive

Modem: iBook G4

Tools

• Soft cloth

• #0 Phillips screwdriver

• Black stick (or other nonconductive nylon or plastic tool)

Part Location

Modem: iBook G4

Preliminary Steps

Before you begin, remove the following:

• Battery

• Keyboard and RAM shield

• AirPort Extreme Card

• Memory card

• Bottom case

• Bottom shield

• DC-in board

• Top case

• Top shield

iBook G4 Take Apart - 84

Procedure

1. Warning: When removing the modem, be careful not to strain the modem cable
or shields.

2. Remove the two screws from the modem board.

3. Disconnect the cable from the upper end of the modem board.

85 - iBook G4 Take Apart

Modem: iBook G4

4. Tilt up the modem and metal shield to remove them from the computer.

5. Install the replacement modem, and reassemble and test the computer.

Replacement Note: Note that the modem fits inside the metal shield.

Modem: iBook G4

iBook G4 Take Apart - 86

Replacement Note: Before installing the replacement modem, make sure no cables
are blocking the modem connector on the logic board.

87 - iBook G4 Take Apart

Modem: iBook G4

Modem: iBook G4 (Early 2004)

Tools

• Soft cloth

• #0 Phillips screwdriver

• Black stick (or other nonconductive nylon or plastic tool)

Part Location

Preliminary Steps

Before you begin, remove the following:

• Battery

• Keyboard and RAM shield

• AirPort Extreme Card

• Memory card

• Bottom case

• Bottom shield

• DC-in board

• Top case

• Top shield

Modem: iBook G4 (Early 2004)

iBook G4 Take Apart - 88

Procedure

1. Warning: When removing the modem, be careful not to strain the modem cable
or shield. Do not apply pressure to the modem. Read all of the procedure before
removing and replacing the modem.

2. Remove the two screws from the modem board.

89 - iBook G4 Take Apart

Modem: iBook G4 (Early 2004)

3. Carefully grasping the ends of the modem board and shield, lift them straight up to
disconnect them from the logic board.

4. Disconnect the cable from the upper end of the modem board.

Modem: iBook G4 (Early 2004)

iBook G4 Take Apart - 90

5. Install the replacement modem, and reassemble and test the computer.

Replacement Note: Before installing the replacement modem, make sure

• the modem flex cable tab is between the shield and the board

• no cables are blocking the modem connector on the logic board.

91 - iBook G4 Take Apart

Modem: iBook G4 (Early 2004)

Replacement Caution: Handle the modem by the edges only. When securing the
modem to the logic board, press only on the rectangular area (highlighted in green in
the following image) that is directly over the modem connector.

Modem: iBook G4 (Early 2004)

iBook G4 Take Apart - 92

Bluetooth

Tools

• Soft cloth

• #0 Phillips screwdriver

• Black stick (or other nonconductive nylon or plastic tool)

Note: To organize the screws you remove from the computer, use a tray with divided
compartments (such as a plastic ice cube tray).

Part Location

Preliminary Steps

Before you begin, remove the following:

• Battery

• Keyboard and RAM shield

• AirPort Extreme Card

• Memory card

• Bottom case

• Bottom shield

93 - iBook G4 Take Apart

Bluetooth

• DC-in board

• Top case

• Top shield

Procedure

1. With the computer on a soft cloth, disconnect the cable from the Bluetooth board and
the logic board.

Bluetooth

2. Disconnect the antenna cable from the Bluetooth board.

3. Remove the screw from the Bluetooth board.

iBook G4 Take Apart - 94

4. Without putting pressure on the optical drive, support the antenna board holder in
place as you slide out the antenna board.

5. Note: If the antenna board holder is attached securely, you do not need to replace it
when installing a replacement Bluetooth antenna board. However, if you are replacing
the optical drive with a new drive, remove the antenna board holder and install a new
one on the replacement optical drive. The antenna board holder adheres to the optical
drive with an adhesive backing.

95 - iBook G4 Take Apart

Bluetooth

6. Install the replacement Bluetooth board and antenna, and reassemble and test the
computer.

Bluetooth

iBook G4 Take Apart - 96

Optical Drive

Note: Depending on the configuration of a customer’s computer, the optical drive can be
either a CD-ROM drive or a combination CD-RW/DVD-ROM drive. The replacement
instructions are the same whichever optical drive is installed.

Tools

• Soft cloth

• #0 Phillips screwdriver

• Black stick (or other nonconductive nylon or plastic tool)

Note: To organize the screws you remove from the computer, use a tray with divided
compartments (such as a plastic ice cube tray).

Part Location

97 - iBook G4 Take Apart

Optical Drive

Preliminary Steps

Before you begin, remove the following:

• Battery

• Keyboard and RAM shield

• AirPort Extreme Card

• Memory card

• Bottom case

• Bottom shield

• DC-in board

• Top case

• Top shield

Procedure

1. With the computer on a soft cloth, peel up any tape on top of the optical drive.

2. If you are replacing the optical drive with a new drive, refer to "Bluetooth" in this
chapter to remove the Bluetooth antenna and holder from the lower edge of the optical
drive.

Note: You do not need to remove the Bluetooth board.

Optical Drive

iBook G4 Take Apart - 98

3. Remove the following from the optical drive:

• 5-mm long screw at upper right corner of drive

• 5-mm long screw at lower right corner of drive

• 7.5-mm long screw (with identifiable collar under screw head) at lower left corner of

drive

• 3-mm long screw at upper left corner of drive

Replacement Note: When replacing the optical drive, install the screws in the
sequence shown below.

4. Disconnect the optical drive ribbon cable from the logic board.

99 - iBook G4 Take Apart

Optical Drive