PowerBook G3 Wallstreet PMU Replacement
- Author: iRobot
- Difficulty: Difficult
The Power Management Unit is located on the bottom of the upper case.
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- Keyboard 6 steps
- PowerBook G3 Wallstreet Heat Shield Replacement 2 steps
- PowerBook G3 Wallstreet Hard Drive Replacement 3 steps
- PowerBook G3 Wallstreet Processor Replacement 1 step
- Modem 3 steps
- Clutch Cover 2 steps
- PowerBook G3 Wallstreet Display Replacement 5 steps
- Upper Case 5 steps
- PRAM Battery 3 steps
- PMU 3 steps
Remove both expansion bay modules using the levers on the front of the computer.
Insert your index fingers inside the expansion bays and search for the two ribbed tabs on the underside of the upper case. The tabs are located near the bottom corners of the keyboard.
Pull the tabs toward yourself and the keyboard will pop up.
Use a spudger, the tips of your fingers, or a flat non-metal tool to pry up the processor's right side.
Remove the processor by sliding it up and to the right.
The processor and RAM can be removed as a unit. It is not necessary to remove the RAM from the processor.
There are two tabs on the left side of the processor that fit into slots on the metal framework. Make sure these tabs are in the slots.
Grasp the upper case near the back left corner and lift up partly so that you can access and disconnect the audio in/out cable from the sound card in the upper right corner of the case.
Be careful not to lift the upper casing too far before you have disconnected the audio in/out cable.
Remove the upper casing. Note that there are two tabs on the laptop's front that often cause the upper case to stick.
Remove the single T8 Torx screw from the front left corner of the PMU.
Lift up the front edge of the PMU and disconnect the three smaller orange ribbon cables (two on the left side of the large PMU cable, and one on the right side) that attach to the underside of the PMU from the upper case.