Bull NovaScale T840 E2, User Manual

Page: 146 / 210

User Guide
146
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Cleaning the Light-Emitting Diode (LED)
Turn the mouse over and inspect the light-emitting diode "LED" area to make sure it is
clean. In practice, an optical mouse does not have the issues with debris build-up that
the older, mechanical ball mice experience.
■
If there is a smudge on the lens area, gently clean with a plain cotton swab.
■
If there are some debris in the lens area, gently blow them away.
Cleaning the Soft Pads
Over time, dust may collect on the soft pads located on the bottom of the mouse.We
recommend you remove the dust on each softpad using a coin. You can also place the
mouse on a white sheet of paper, and run the mouse over it (apply soft pressure on the
mouse while doing so).
Note:
Do not use a sharp instrument, it could damage the soft pads.
Cleaning an Optical Disc Drive
A dust-accumulated tray or a dusty optical drive may cause the device not to read data
correctly.
To Clean an Optical Drive:
1. Power on the system.
The POWER/SLEEP lamp is lit.
2. Press the optical drive tray Open/Close button on the front of the optical drive.
The tray opens.
3. Hold the disc and take it out from the tray.
Note:
Do not touch the signal side of the disc with your fingers.
4. Wipe the tray with a dry soft cloth.
Caution:
Do not wipe the lens of the optical drive. Doing so may damage the
lens and may cause a malfunction of the drive.
5. Push on the tray front to close the tray.
To Clean an Optical Disc
Wipe the signal side of the disk with a dry soft cloth.
Caution:
•
Wipe disks from the center to the outside.
•
Use only a specific disc cleaner if necessary. Cleaning a disc with
record spray/cleaner, benzene, or thinner causes damage to the disk
contents. At worst, inserting the disk into the system may cause failure.