Apple ibook g4 User Manual

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 Optical Drive5.Warning: Handle the optical drive at the sides only. Do not touch or press 
anywhere else on the drive.
Without straining any cables, tilt up the optical drive and lift it out the drive. 
						

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 Optical Drive 6. Remove the two identical screws holding the cable bracket to the optical drive.
7. Remove the cable bracket.
Note: When reassembling the computer, transfer the cable bracket to the 
replacement drive.
8. Peel off the tape from the optical drive, and disconnect the ribbon cable.
Note: When reassembling the computer, transfer the ribbon cable to the replacement 
drive.  
						

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 Optical Drive9. Remove the screw holding the mounting bracket to the bezel.
10.  Remove the screws that hold the mounting bracket to the optical drive.
Important: When reassembling the computer, transfer the mounting bracket to the 
replacement drive.
Replacement Warning: Make sure you use the shorter screw to secure the 
mounting bracket to the bezel.  
						

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 Optical Drive 11.Caution:  The bezel and optical drive case is a soft material. Be especially careful 
when removing the bezel from the optical drive.
With the pointed end of a black stick, gently press the three tabs, and tilt the bezel up 
and off of the drive.
12. Install the replacement optical drive, and reassemble and test the computer.
Replacement Note: When installing the replacement optical drive, align the front of 
the drive bezel to the outer edge of the frame first. Make sure the screw holes align. 
Check that the felt at the slot opening is even and not mashed. 
						

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 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 (or other nonconductive nylon or plastic tool)
Preliminary Steps
Before you begin, remove the optical drive from the computer. If brackets, a cable, and a 
faceplate are attached to the drive, use a screwdriver and black stick to remove them.
Note: The following image shows a sample drive with brackets, cable, and faceplate 
attached. Your drive might have a different appearance. 
						

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 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. 
						

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 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 hooks on the top cover fit into the 
slots on the bottom cover. Then slide the top cover into place.
6. Replace the four screws. If applicable, install the brackets, cable, and faceplate back 
on the drive before returning the old drive.
7. Install the replacement drive, and reassemble and test the computer.  
						

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 Display Module
Display Module
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 
						

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 Display Module• Bottom case
• Bottom shield
• DC-in board
• Top case
• Top shield
• Modem
Procedure
1. With the computer on a soft cloth, note the routing of the thin, black microphone cable 
and the LVDS (low voltage data signal) cable. 
2. Disconnect the microphone cable from the logic board near the hard drive. 
3. Pull up the flexible tab to disconnect the LVDS cable from the logic board.  
						

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 Display Module 4. Without straining the cables, lift them up from the logic board.
5. Peel off any tape holds the cables to the frame.
6. While supporting the display, tilt up the chassis, and disconnect the inverter cable from 
the underside of the logic board.