NEC ShieldPRO FC-N21S Ruggedised Notebook Computer
User’s Guide 0318-00002 Ver. 2.0 Dec 2008 – Page 156
Confirm that the sound driver is installed
properly.
Confirm that ShieldPRO is not in suspend
(standby) state.
If external speakers are used, confirm
that they are connected to ShieldPRO
properly, have power and are switched
on.
2
Sound is distorted.
Action
Confirm that the volume is set to neither too high
nor too low. If volume is set too high, some
electronic audio parts can cause sound distortion.
3
Recording fails.
Action
Adjust the play or record sound level.
4
An external microphone or sound device does
not operate.
Action
Confirm that the microphone is connected
to ShieldPRO properly.
Click the speaker icon on the task bar to
check the Windows volume.
Check the volume control of ShieldPRO.
10.1.3.15.
External CD-R/W with DVD-ROM drives
1
The CD-R/W with DVD-ROM drive does not
read CD data.
Action
Confirm that the CD is properly in the tray
with the label facing upward.
Confirm that the CD is not dirty. If dirty,
clean the CD with CD cleaning kit. You
can buy CD cleaning kit from most
computer shops.
Confirm that the DVD/CD-ROM driver is
installed properly.
Test to see if another CD is read properly
2
The CD or DVD cannot be ejected.
Action
The CD/DVD has not been put on the drive
properly. Take out the CD/DVD manually using
the following procedure:
1. Turn off the power of ShieldPRO.
2. Insert a thin needle-shaped wire such as
extended paper clip into the manual ejection
hole on the drive and push the wire hard.
3. Pull out the tray completely and take out the
CD/DVD.
10.1.3.16.
External floppy disk drives
1
The floppy disk drive indicator remains ON.
Action
Confirm that the floppy disk is not
damaged physically.
Confirm that the floppy disk is inserted
properly.
