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Take Apart Trackball Assembly - 19
Trackball
Assembly
Before you begin, remove
the following:
• Main battery
• I/O door
• Top case
Caution:
The
PowerBook140/145/170
contains CMOS devices that
are very susceptible to ESD
damage. To prevent damage,
wear a grounding
wriststrap. Review the ESD
precautions in Bulletins/
Safety.
Trackball
Assembly