Apple powerbook g4 12 inch User Manual

							 
PowerBook G4 (12-inch) Take Apart -  
19 
 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. 
						

							 
20 -  
PowerBook G4 (12-inch) Take Apart
 Keyboard 2. Open the computer, and locate the following keys:
•F1
•F2
• F11
• F12
3.
  Important:
    Using a black stick, carefully pry up each of the four keys from the left side 
of each key. The keys are easily removed from the left side without damaging the 
keyboard. 
						

							PowerBook G4 (12-inch) Take Apart - 21
 Keyboard4. 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. 
						

							22 - PowerBook G4 (12-inch) Take Apart
 Keyboard 6. Lift up the top two corners of the keyboard, and move the keyboard toward the display 
to clear the tabs at the bottom of the keyboard. 
						

							PowerBook G4 (12-inch) Take Apart - 23
 Keyboard7. 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. 
						

							24 - PowerBook G4 (12-inch) Take Apart
 Keyboard 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. 
						

							PowerBook G4 (12-inch) Take Apart - 25
 Top Case
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
Preliminary Steps
Before you begin, remove the following:
• Battery
• Memory door and memory card
• Keyboard 
						

							26 - PowerBook G4 (12-inch) Take Apart
 Top Case
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.  
						

							PowerBook G4 (12-inch) Take Apart - 27
 Top Case3. 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.
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. 
						

							28 - PowerBook G4 (12-inch) Take Apart
 Top Case 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. Make sure the 
bracket 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.