Apple powerbook g4 12 inch User Manual

PowerBook G4 (12-inch) Take Apart - 99
 DC-In Board4. Remove the round port liner.
5. Install the replacement DC-in board, and reassemble and test the computer. 

100 - PowerBook G4 (12-inch) Take Apart
 Optical Drive
Optical Drive
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
• AirPort Extreme Card, if installed
• Keyboard 

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 Optical Drive• Top case
• Reed switch (or hall effect sensor board)
• Hard drive
• Modem
• DC-to-DC board
• Heatsink with fan
• Inner frame (with RJ11 board attached)
• Logic board
Procedure
1. Remove the two screws from the shoulder bracket at the upper right corner of the 
optical drive. 

102 - PowerBook G4 (12-inch) Take Apart
 Optical Drive 2. Use a black stick to remove the shoulder bracket.
3. Remove the two screws from the slot load bezel.
Replacement Note:
 When installing the replacement optical drive in the bottom 
case, make sure the slot load bezel is flush against the slot in the side of the bottom 
case before installing the screws. Check that the felt at the slot opening is even and 
not mashed.
Replacement Warning:
 Make sure you use the same screws to secure the bezel....

PowerBook G4 (12-inch) Take Apart - 103
 Optical Drive4. Tilt up the optical drive and remove it from the computer.
5. Remove the screws from the L-shaped EMI bracket on the top of the drive. Lift off the 
bracket. 

104 - PowerBook G4 (12-inch) Take Apart
 Optical Drive 6. Turn over the drive and remove the three screws from the L-shaped EMI bracket on 
the bottom of the drive.
7. Remove the bottom L-shaped EMI bracket. 

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 Optical Drive8.Important: For the PowerBook G4 (12-inch DVI) model, the optical drive bezel is 
included with the replacement drive, so do not remove it. This step applies only to the 
PowerBook G4 (12-inch) model.
Use a black stick to press the tabs and remove the slot load bezel. Pull the bezel 
straight off the drive.
9. Disconnect the flex cable.
10. Install the replacement optical drive, and reassemble and test the computer. 

106 - PowerBook G4 (12-inch) Take Apart
 How to Remove a Stuck Disc from the Slot-Load
How to Remove a Stuck Disc 
from the Slot-Load Drive
The following instructions explain how to remove a disc that is stuck in the slot-load optical 
drive. 
Important: When a disc becomes stuck in the slot-load optical drive, it makes the drive 
unusable. Make sure you have a replacement drive available.
Tools
This procedure requires the following tools:
• ESD wriststrap and mat
• #0 Phillips screwdriver
• Black stick...

PowerBook G4 (12-inch) Take Apart - 107
 How to Remove a Stuck Disc from the Slot-Load 
Procedure
1. Remove the four identical screws that hold the top cover to the drive.
2. Slide the top cover approximately 2 mm toward the back of the drive. Lift up the top 
cover to remove it. 

108 - PowerBook G4 (12-inch) Take Apart
 How to Remove a Stuck Disc from the Slot-Load 3. Check the placement of the disc. It is either clamped to the turntable at the center of 
the disc, or it is wedged under one or more posts at the outer edge of the disc. 
4. Holding the edge of the disc, press on the center clamp or hold the posts steady as 
you remove the disc from the drive. 
Important: Do not touch any key components located near the disc.
5. Replace the top cover on the drive so that the small...