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94 - PowerBook G4 (15-inch FW 800_1.5/1.33GHz) Take Apart
Logic Board
The following procedures show how to verify and replace the thermal materials:
Warning: Whenever the logic board is separated from the heatsink, designated
thermal material must be replaced. Failure to do so can cause the computer to
overheat and be damaged.
Important: When removing thermal material in the following procedures:
• Use a black stick to remove as much as possible
• Then use an alcohol pad to vigorously and completely remove any remaining material
on the mating surface.
Important: To install new pads:
• Center each pad over the location that corresponds to the chip on the logic board and
press into place, avoiding air pockets.
• Remove protective backing, if present.
Important: Avoid unnecessary contact with thermal pads as dirt and body oils reduce the
pad's conductivity.
3. Only if damaged, replace the light colored thermal pad(s), shown below.
For 1.0 GHz & 1.25 GHz logic board heatsinks:
• Install the light blue pad (the thinner one) in the center, and the light green one on
the right.