author unknown: found on the net! If you know the author, please
let us know)
This is an actual alert to IBM Field Engineers that went out to
all IBM Branch Offices. The person who wrote it was SERIOUS!
"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.
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 manufacturers of the mouse. Foreign balls can be replaced
using the pop-off method. Domestic balls are replaced by 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
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."