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A true
classic, this is one of my all-time favorites: A white paper
from IBM on mouse balls replacement...
Abstract: Mouse Balls Available as FRU (Field Replacement
Unit):
"Mouse balls are now
available as FRU. Therefore, if a mouse fails to operate or should
it perform erratically, it may need a ball replacement. Because of
the delicate nature of this procedure, replacement of mouse balls
should only be attempted by properly trained personnel.
Before proceeding,
determine the type of mouse balls by examining the underside of the
mouse. Domestic balls will be larger and harder than foreign balls.
Ball removal procedures differ depending upon manufacturer of the
mouse. Foreign balls can be replaced using the pop-off method.
Domestic balls are replaced using the twist-off method. Mouse balls
are not usually static sensitive. However, excessive handling can
result in sudden discharge. Upon completion of ball replacement, the
mouse may be used immediately.
It is recommended that each
replacer have a pair of spare balls for maintaining optimum customer
satisfaction, and that any customer missing his balls should suspect
local personnel of removing these necessary items."
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