Mouse Balls

Date in my archives: 16-May-1995 (but I'm sure I first saw it in the late eighties)

Forwarded with subject: Mouse Balls

The following is [reportedly] an actual alert to IBM Field Engineers that went out to all of the IBM Branch Offices. The person who wrote this was very serious. The rest of us found it rather funny. . . .

Subject: IBM Ball Replacement

Abstract: Mouse Balls Available as FRU (Field Replacement Units)

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 ball 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 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 its balls should suspect local personnel of removing these necessary items.

To reorder, specify one of the following:

P/N 33F8462 Domestic Mouse Balls
P/N 33F8461 Foreigh Mouse Balls