Directive to Field Engineers
 

Directive to Field Engineers.

Re: Replacement of Mouse Balls.

If a mouse fails to operate or should it perform erratically, it may
need a ball replacement. Mouse balls are now available as FRU (Field
Replacement Units). 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
the manufacturer 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 used
imediately. It is recommended that each person have a pair of spare
balls for maintaining optimum customer satisfaction. Any customer
missing his balls should contact the local personnel in charge of
removing and replacing these necessary items. Please keep in mind, that
a customer without properly working balls ... Is an unhappy customer.