Floppy Drive; Cds And Dvds; Troubleshooting Tools; Power Lights - Dell Precision T7400 Guía De Referencia Rápida

Floppy Drive

NOTICE:
Do not attempt to clean drive heads with a swab. The heads may become
misaligned and prevent the drive from operating.
Clean your floppy drive using a commercially available cleaning kit. These kits
contain pretreated floppy disks to remove contaminants that accumulate during
normal operation.

CDs and DVDs

NOTICE:
Always use compressed air to clean the lens in the CD/DVD drive, and
follow the instructions that come with the compressed air. Never touch the lens
in the drive.
1 Hold the disc by its outer edge. You can also touch the inside edge of the
center hole.
NOTICE:
To prevent damaging the surface, do not wipe in a circular motion around
the disc.
2 With a soft, lint-free cloth, gently wipe the bottom of the disc (the unlabeled
side) in a straight line from the center to the outer edge of the disc.
For stubborn dirt, try using water or a diluted solution of water and mild
soap. You can also purchase commercial products that clean discs and
provide some protection from dust, fingerprints, and scratches. Cleaning
products for CDs are safe to use on DVDs.

Troubleshooting Tools

Power Lights

CAUTION:
safety instructions in the
The power button light located on the front of the computer illuminates and
blinks or remains solid to indicate different states:
• If the power light is green and the computer is not responding, "Diagnostic
Lights" on page 26.
• If the power light is blinking green, the computer is in standby mode. Press
a key on the keyboard, move the mouse, or press the power button to resume
normal operation.
24
Quick Reference Guide
Before you begin any of the procedures in this section, follow the
Product Information Guide
.