Apple PowerBook G4 (12-inch and DVI) 03-09 Service Manual

 Service Source

PowerBook G4 (12-inch)

PowerBook G4 (12-inch DVI)

Updated September 16, 2003

 Service Source

Take Apart

PowerBook G4 (12-inch)

PowerBook G4 (12-inch DVI)

General Information

Overview

Some of the key features that distinguish these computers from earlier notebook models include:

• 12-inch active-matrix display in aluminum alloy enclosure

• built-in Bluetooth

• slot load optical drive

• optional AirPort Extreme Card and Base Station

General Information

PowerBook G4 (12-inch) Take Apart -

Model Differences

The external housing of the PowerBook G4 (12-inch DVI) model looks the same as the PowerBook G4 (12-inch) model except for one port. To distinguish the models, look for a mini-DVI port (shown below) on the PowerBook G4 (12-inch DVI) computer.

PowerBook G4 (12-inch DVI)

The mini-DVI port is used with an adapter cable to connect the computer to a monitor, television, VCR, or other video device. The adapter cables that can be used with this port include a mini-DVI-to-DVI adapter, a mini-DVI-to-VGA adapter, and a mini-DVI-to-S-Video adapter.

By contrast, the PowerBook G4 (12-inch) computer has a video-out VGA port instead of a mini-DVI port.

PowerBook G4 (12-inch)

Speciﬁc model differences that are noted in the Take Apart procedures include

• Reed Switch Board and Cable—For the

part is called the "Hall Effect Sensor Board and Cable," but the procedure is the same.

• DC-to-DC Board—The

is the same.

• Heatsink—The heatsink shape and thermal pad placement differs.

• Inner Frame—The main frame shape differs, but the procedure is similar.

• RJ11 Modem Board—The procedure is the same, but the placement of the tape that secures the cable differs.

• Fan—The fan is secured to the heatsink in the

but it is secured to the inner frame in the PowerBook G4 (12-inch DVI) model.

• Logic Board—The component layout on the board differs, but the procedure is the same.

• Optical Drive—The slot load bezel must be transferred to a replacement optical drive for the

Important:

to both models.

PowerBook G4 (12-inch) model only.

Unless other speciﬁc differences are noted, procedures in this chapter apply

component layout on the board differs, but the procedure

PowerBook G4 (12-inch DVI) model, this

PowerBook G4 (12-inch) model,

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PowerBook G4 (12-inch) Take Apart

General Information

Tools

Most of the tools required for taking apart these computers are the same as for earlier notebook models; however, there are three new tools:

• 1.5 mm hex driver (small hex head screwdriver) for the top case and display housing

• 4 mm socket wrench or needlenose pliers for the DC-to-DC board

• tweezers or needlenose pliers (for replacing a foot or for routing thin cables such as the AirPort antenna cable)

The following tools are recommended for these computers:

• Coin

• ESD wriststrap and mat

• Small soft cloth

• Black stick (or other nonconductive nylon or plastic flat-blade tool)

• #0 Phillips screwdriver (magnetized)

• #1 Phillips screwdriver (magnetized)

• Jeweler’s flat-blade screwdriver

• 1.5 mm hex driver

• 4 mm socket wrench or needlenose pliers

Important:

compartments (such as a plastic ice cube tray). If doing a complete disassembly, note the screws removed from each location in the computer.

Warning: Check the screw lengths before installing the screws. Installing a longer screw in the wrong place can permanently damage the housing or an internal part.

To organize the screws y ou remo ve from the computer, use a tra y with divided

Pictures in this Chapter

Because in some cases the computer was photographed at a pre-release stage, some of the images pictured in this chapter show boards that are red, rather than green. However, production models include green boards.

General Information

PowerBook G4 (12-inch) Take Apart -

Serial Number Location

The serial number is located in the battery bay.

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PowerBook G4 (12-inch) Take Apart

General Information

Battery

Tools

This procedure requires the following tools:

• Soft cloth

• 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.

PowerBook G4 (12-inch) Take Apart -

Procedure

Warning:

performing this procedure.

1. Shut down the computer.

2. Unplug the power adapter, phone cord, and any other cables connected to the

3. Turn over the computer and place it on a soft cloth.

4. Use a coin to release the battery lock.

5. Lift the battery out of the battery bay.

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

computer.

6. Install the replacement battery, and reassemble and test the computer.

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PowerBook G4 (12-inch) Take Apart

Battery

Feet

Tools

This procedure requires the following tools:

• Foot kit

• Tweezers or needlenose pliers

• Soft cloth

Preliminary Step

Before you begin, identify the type of foot that needs replacement. Check the bottom case of the computer, and compare it with the images in this table:

Plug Area on Bottom Case Matching Foot Action

Missing plug Not available for

replacement

Battery plug Battery foot Continue with the

Case plug Case foot Continue with the

Do not perform the foot replacement.

procedure, matching the foot to the plug on the battery.

procedure, matching the foot to the plug on the bottom case.

Feet

PowerBook G4 (12-inch) Take Apart -

Procedure

Warning: The glue used in this procedure can bond instantly to skin. Do not touch the

glue. In the e v ent of contact, re vie w the saf ety instructions at the end of this document. For additional information, refer to the glue manufacturer:

Elmer's Products, Inc. Columbus, OH. 43215-3799 www.krazyglue.com

1. Place the computer upside down on a clean, lint-free cloth or other nonabrasive

surface.

2. Select a foot from the kit that matches the plug on the bottom case. (Refer to the

images shown in the table.) Do not use a foot that does not match.

3. Make sure the plug area on the bottom case is clean. If any portion of the soft rubber

foot remains, remove it so that only the hard plastic plug is visible (as shown below).

Battery Plug Case Plug

Important: Notice the inner ring of the plug. When positioning the foot, make sure

the textured plane of the rubber foot fits into the compatible ring in the plug. This ensures a balanced and level fitting.

8 - PowerBook G4 (12-inch) Take Apart

Feet

4. Warning: GLUE IS AN EYE AND SKIN IRRITANT. BONDS SKIN INSTANTLY. Do not

touch the glue at any time. Before opening the glue, review the safety instructions at the end of this document.

Important: The glue tube included in the kit is sealed until first use. Do not break the

seal until you are ready to use the glue. To break the seal, hold the tube upright and away from you. Place the hollow nozzle cap on the tube and tighten it all the way down. The tube is then ready to dispense the glue through the nozzle cap.

5. Apply one drop of glue to the plug on the bottom case. Do not spread the glue.

6. Using tweezers or needlenose pliers, carefully position the new foot so its textured

surface ﬁts into the inner ring of the plug.

7. Using the end of the tweezers or pliers—not your ﬁnger—lightly press and hold the

foot in place for 30 seconds.

8. Before turning over the computer, allow the glue to set for at least 15 minutes.

9. Discard the tube of glue.

SAFETY INSTRUCTIONS: GLUE IS AN EYE AND SKIN IRRITANT. BONDS SKIN

INSTANTLY. Contains ethyl cyanoacrylate. Avoid contact with skin and eyes. If eye or mouth contact occurs, hold eyelid or mouth open and rinse thoroughly but gently with water only for 15 minutes and GET MEDICAL ATTENTION. Liquid glue will sting eye temporarily . Solidiﬁed glue may irritate ey e like a g rain of sand and should be treated b y an eye doctor. If skin bonding occurs, soak in acetone-based nail polish remover or warm soapy water and carefully peel or roll skin apart (do not pull). Contact through clothing ma y cause skin burn. If spilled on clothing, ﬂush with cold water. Avoid prolonged breathing of vapors. Use with adequate ventilation. KEEP OUT OF REACH OF CHILDREN.

Feet

PowerBook G4 (12-inch) Take Apart - 9

Memory Door and Memory Card

Tools

This procedure requires the following tools:

• Soft cloth

• #0 Phillips screwdriver

• Black stick (or other nonconductive nylon or plastic flat-blade tool)

Part Location

Preliminary Steps

Before you begin, remove the battery.

Procedure

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

performing this procedure.

10 - PowerBook G4 (12-inch) Take Apart

Memory Door and Memory Card

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

2. Remove the four identical screws from the memory door.

3. Use a black stick to lift off the memory door.

4. Touch a metal surface inside the computer to discharge static electricity from your

body.

5. If a memory card is already installed, release it by spreading apart the tabs in the

expansion slot from the notches in the card. Allow the card to pop up slightly, and pull it out of the memory slot.

Memory Door and Memory Card

PowerBook G4 (12-inch) Take Apart - 11

6. Insert the replacement memory card into the expansion slot at a 30-degree angle.

7. Make sure the memory card is fully inserted. Check that the notches in the card clear

the tabs as you press down on the sides of the card to lock it into place.

8. Install the memory door. Be careful not to overtighten the screws.

9. Install the battery, and test the computer.

12 - PowerBook G4 (12-inch) Take Apart

Memory Door and Memory Card

AirPort Extreme Card

Tools

This procedure requires a black stick (or other nonconductive nylon or plastic ﬂat-blade tool).

Part Location

Preliminary Steps

Before you begin, remove the battery.

AirPort Extreme Card

PowerBook G4 (12-inch) Take Apart - 13

Procedure

Warning: If the computer has been recently operating, allow it to cool down for 30

minutes before performing this procedure.

1. Touch a metal surface inside the battery bay to discharge static electricity from your

body.

2. Open the door to the AirPort slot.

3. If an optional AirPort Extreme Card is already installed, use a black stic k to un-loop the

pull tab.

14 - PowerBook G4 (12-inch) Take Apart

AirPort Extreme Card

4. Gently disconnect the AirPort antenna cable.

5. Use the pull tab to pull out the card.

AirPort Extreme Card

PowerBook G4 (12-inch) Take Apart - 15

6. Slide the replacement AirPort Extreme Card with the serial number facing up into the

slot, as shown.

16 - PowerBook G4 (12-inch) Take Apart

AirPort Extreme Card

7. Connect the end of the antenna cable to the card.

8. Loop the clear plastic tab under the card so that the tab secures the antenna cable

and tucks into the slot.

Note: The AirPort slot on the bottom case has a recessed inner slot designed for the

clear plastic tab to tuck into.

9. Close the AirPort door, and reassemble and test the computer.

AirPort Extreme Card

PowerBook G4 (12-inch) Take Apart - 17

Keyboard

Tools

This procedure requires the following tools:

• #0 Phillips screwdriver

• Black stick (or other nonconductive nylon or plastic flat-blade 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

• Memory door and memory card

18 - PowerBook G4 (12-inch) Take Apart

Keyboard

Procedure

1. With the computer upside down on a soft cloth, remove the single screw and small

EMI shield from the memory card bay.

Replacement Note: Make sure you replace the screw and EMI shield so that the

EMI shield is positioned with the finger-like projection pointing up.

Keyboard

PowerBook G4 (12-inch) Take Apart - 19

2. Open the computer, and locate the following keys:

•F1

•F2

• F11

• F12

3. Important:

of each key. The keys are easily removed from the left side without damaging the keyboard.

Using a black stick, carefully pry up each of the four k eys from the left side

20 - PowerBook G4 (12-inch) Take Apart

Keyboard

4. Use a black stick or ﬂat-blade screwdriver to lift off the two round stickers that are

located between the two key mechanisms. Reserve the stickers for replacement.

5. Remove the screw under each of the stickers.

Keyboard

PowerBook G4 (12-inch) Take Apart - 21

6. Lift up the top two corners of the keyboard, and move the k e yboard to w ard the displa y

to clear the tabs at the bottom of the keyboard.

22 - PowerBook G4 (12-inch) Take Apart

Keyboard

7. Flip the keyboard over and lay the keyboard ﬂat on the trackpad.

8. Use a black stick to carefully remove the aluminum tape that covers the keyboard

connector. You will need to reuse the tape when reassembling the computer.

9. Peel up the keyboard cable from its adhesive. Using a black stick, pry up the tabs at

the ends of the connector, and then pull the cable straight up to disconnect it.

Keyboard

PowerBook G4 (12-inch) Take Apart - 23

10. Install the replacement keyboard. Make sure you

• Install the foil tape in the recessed area over the keyboard connector.

• Set the tabs at the bottom of the keyboard into the slots in the top case.

• Press the keyboard into place, and install the screws and round stickers.

• Install the function keys:

– Position the key directly over the scissor mechanism. – Press the key onto the scissor. – Check the operation of the key.

• Close the display and install the final screw in the memory bay.

11. Reassemble and test the computer.

24 - PowerBook G4 (12-inch) Take Apart

Keyboard

Top Case

Tools

This procedure requires the following tools:

• #0 Phillips screwdriver

• Black stick (or other nonconductive nylon or plastic flat-blade tool)

• Hex 1.5 mm 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

Top Case

Preliminary Steps

Before you begin, remove the following:

• Battery

• Memory door and memory card

• Keyboard

PowerBook G4 (12-inch) Take Apart - 25

Procedure

1. Warning: The screws in the battery bay require holding the screwdriver at an

angle. Be careful not to strip the screws.

Note: Avoid scratching the external housing by using care when removing the screws. You might want to cover part of the housing with a soft cloth as you remove screws.

With the computer upside down on a soft cloth, remove the three screws from the bottom case at the battery bay.

2. Remove the screws near the display hinge.

26 - PowerBook G4 (12-inch) Take Apart

Top Case

3. Open the display, and with the computer upright, remove the following 13 screws from

the top case:

• one Hex, 16.5 mm long screw at upper right corner near power button

• one Hex, 7 mm long screw at upper left corner near microphone

• one #0 Phillips, 15 mm long screw in keyboard well

• four #0 Phillips, 4.5 mm long screws in keyboard well

• six #0 Phillips, 2.5 mm long screws in keyboard well Replacement Note: When replacing the top case screws, install the three 2.5-mm

long screws at the right side (optical drive side) first.

Top Case

4. Carefully peel up the two pieces of foil tape that cover the microphone cable, power

cable, and trackpad cable. Reserve the tape when reassembling the computer.

5. Remove the remaining screw from the top case.

PowerBook G4 (12-inch) Take Apart - 27

6. Remove two screws from the front right side of the top case.

Note: For the PowerBook G4 (12-inch DVI) model, the shape of the two 3-mm long screws differs from the screws used in the PowerBook G4 (12-inch) model at this location. Although the screw length is the same; the screw has a collar under the screw head, and this type of screw cannot be used in the PowerBook G4 (12-inch) model.

Replacement Note: In addition to securing the top case to the bottom case, the two 3-mm long screws help secure an inner bracket to the battery well. If the bracket becomes loose during disassembly, make sure it is installed in the bottom case before replacing the top case.

7. Remove two screws from the front left side of the top case.

Replacement Note: When installing the top case, install these two 5.5-mm long screws before installing the 3-mm long screws.

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Top Case

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