Keyboard Cleaning; Mouse Cleaning - NEC POWERMATE PROFESSIONAL - SERVICE MANUAL 05-1997 Service Manual

4. Local distributors and dealers may sell diskette drive head cleaning kits. These kits
contain special diskettes and cleaning solution. Do not use the abrasive head
cleaning kits (kits without cleaning solution). Insert the diskette immediately after
powering on the system, before the disk boot-up. Allow the diskette drive heads
to clean for about 30 seconds.

Keyboard Cleaning

When necessary, inspect and clean the inside of the keyboard as follows:
Remove the six screws holding the keyboard enclosure together.
1.
Separate the two halves of the enclosure. Clean the enclosure and keys with a
2.
damp cloth. A small, soft-bristle brush may be used to clean between the keys. Do
not wet or dampen the keyboard's printed circuit board (PCB). If the PCB
accidentally gets wet, thoroughly dry it before reattaching the keyboard to the
system unit.

Mouse Cleaning

Under normal conditions, the mouse has a self-cleaning mechanism that prevents a buildup
of dust or lint around the mouse ball and tracking mechanism. Periodically, however, the
mouse ball must be cleaned. Use the following procedure to clean the mouse.
Unplug the mouse from the system.
1.
2. Turn the mouse upside down and locate the mouse ball cover (see Figure 4-1).
3. Turn the ball cover clockwise and remove the cover.
NOTE: The keyboard and cable together are
considered a whole-unit, field-replaceable
assembly. Disassembly of the keyboard is
necessary only when cleaning the inside.
Maintenance and Troubleshooting 4-7