Apple powerbook g4 12 inch 1 33ghz User Manual

							PowerBook G4 (12-inch 1.33 GHz) Take Apart - 49
 Heatsink and Fan Assembly
Heatsink and Fan Assembly
Tools
This procedure requires the following tools:
• #0 Phillips screwdriver 
• #1 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 
• Keyboard
• Top case 
						

							50 - PowerBook G4 (12-inch 1.33 GHz) Take Apart
 Heatsink and Fan Assembly
Procedure
1.Warning: The cone of the subwoofer, located below the heatsink and to the right of 
the fan, is a sensitive device. Avoid touching the subwoofer cone as you perform this 
procedure.
2. If tape covers any of the following screws, peel up the tape. Remove the following 
screws from the heatsink:
• Three 6-mm long #0 Phillips screws
• Two 7.5-mm long #1 Phillips screws with springs
• One 12.5-mm long #0 Phillips screw
• One 4.5-mm long #0 Phillips screw 
						

							PowerBook G4 (12-inch 1.33 GHz) Take Apart - 51
 Heatsink and Fan Assembly3. Remove the tape, if provided, that covers the heatsink and secures the cables in 
place.
4. Near the fan, peel up the tape and remove the following screws:
• One 3-mm long screw
• One 12-mm long screw
Replacement Note:
 When reapplying tape around the fan, make sure the fan 
blades are not blocked. The image below shows the correct application of tape.
5. Disconnect the inverter cable that runs along the top of the fan.
Replacement Note:
 When reconnecting the inverter cable, make sure it is 
routed in the channel above the fan and behind the cable guide, as shown.
6. Disconnect the fan cable. 
						

							52 - PowerBook G4 (12-inch 1.33 GHz) Take Apart
 Heatsink and Fan Assembly 7. Holding the heatsink plate, begin to lift up the heatsink assembly, being careful where 
it catches on remaining tape and the chassis. Use a black stick to pry up the middle 
right corner of the heatsink plate.
Warning:
 To avoid bending the heatsink, support the heatsink as it is removed. 
8. Note the placement of the thermal pads. Make sure you replace the thermal pads 
whenever the heatsink is removed or replaced.  
						

							PowerBook G4 (12-inch 1.33 GHz) Take Apart - 53
 Heatsink and Fan Assembly9. Note the correct routing of the cables when the heatsink is installed.
.
10. Install the replacement heatsink, and reassemble and test the computer. 
						

							54 - PowerBook G4 (12-inch 1.33 GHz) Take Apart
 Inner Frame
Inner Frame
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
• Keyboard
• Top case 
						

							PowerBook G4 (12-inch 1.33 GHz) Take Apart - 55
 Inner Frame• Hard drive
• Modem
• DC-to-DC board
• Heatsink
Procedure
1. Note the cable routing before disconnecting cables. 
Replacement Note:
 Reserve any tape for securing cables after the frame 
replacement. 
2.Warning: The subwoofer cone, located below the right corner of the frame, is a 
sensitive device. Avoid touching the cone as you perform this procedure.
3. Disconnect the connector from the upper right corner of the logic board. 
						

							56 - PowerBook G4 (12-inch 1.33 GHz) Take Apart
 Inner Frame 4.Warning: Be careful not to strain the LVDS cable.
Near the I/O ports, 
• disconnect the LVDS cable by using the pull-tab on the connector
• disconnect the 6-pin connector
Replacement Note:
 When reinstalling the LVDS cable, tuck the pull-tab under the 
frame.
5. Remove the screw that secures the LVDS cable to the frame. 
						

							PowerBook G4 (12-inch 1.33 GHz) Take Apart - 57
 Inner Frame6. Near the fan, disconnect the two connectors shown
• four-pin connector
• two-pin connector
Replacement Warning:
 When reassembling the computer, notice the two black 
insulated cables that run along the bottom of the fan. To avoid damaging the 
cables, make sure that the thinner twisted cable is routed on top of the 
thicker fan cable and that both cables are routed between the fan and the 
modem standoff, as shown. 
						

							58 - PowerBook G4 (12-inch 1.33 GHz) Take Apart
 Inner Frame 7. Peel up any remaining tape, and remove the screws from the frame and I/O port 
shield.