This text ACTUALLY came out of an IBM service database.
Of course it's referring to the rubber ball inside a
computer mouse ...
Abstract: MOUSE BALLS NOW AVAILABLE AS FRU (Field Replacement Unit)
Text: Mouse Balls are now available as a FRU. If a mouse fails to
operate or should perform erratically, it may be in need of ball
replacement. Because of the delicate nature of this procedure,
replacement of mouse balls should be attempted by trained personnel
only.
Before ordering, determine type of mouse balls required by examining
the underside of each 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 and domestic balls 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 servicer have a pair of balls for
maintaining optimum customer satisfaction and that any customer
missing his balls should suspect local personnel of removing these
necessary functional items.
