The following was written by a person who used to work at Big Blue and was given this by a Big Blue friend who found it in the IBM service manual. This was actually put into the manual as a serious bulletin!


Abstract: MOUSE BALLS NOW AVAILABLE AS FRU (Field Replacable 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.

P/N33F846Z -- DOMESTIC MOUSE BALLS P/N33F8461 -- FOREIGN MOUSE BALLS