Maintaining The Lcd Quality - NEC SX Service And Reference Manual

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Always charge the battery packs as soon as possible after a low battery
indication.

Maintaining the LCD Quality

When it comes to screen problems, heat plays a big part. After a good working
session, the typical routine is to shut the machine and close the cover. The
display surface (no matter what type it is) radiates heat. When you close the
cover, you trap the heat against the screen. Make sure to leave the computer's
cover open for about ten minutes while the heat disperses, before closing the
LCD.
6-4 Preventive Maintenance