JVC CA-NXF3 Instructions Manual page 74

Troubleshooting (continued)
■For a connected USB device
Problem
Files on a USB device
cannot be played back.
MP3, WMA, WAV,
JPEG, ASF, DivX,
MPEG1 or MPEG2 file
cannot be played back.
■For the karaoke function
Problem
The karaoke function
cannot be activated.
The scoring function
cannot be used.
The score is displayed
as "_ _" or seems
wrong.
If this system does not work properly even after taking the action in the above "Possible solution"
Many functions of this system are controlled by microprocessors that can be reset by recycling the power
supply. If pressing any button does not result in the normal action, disconnect the power cable from the outlet,
wait for a while, and connect the power cable again.
71
Possible cause
If "CANNOT PLAY THIS
DEVICE" appears on the TV
screen, the files on a USB
device are not playable.
The connected USB device
may include files of different
types (MP3, WMA, WAV, JPEG,
ASF, DivX, MPEG1 or MPEG2).
Possible cause
A microphone is not connected
to the main unit.
The microphone mixing func-
tion is not activated.
The menu screen of a DVD
VIDEO, VCD, SVCD is dis-
played on the TV screen.
The singing time is less than 3
minutes.
Your voice is too small or the
sensitivity of the connected
microphone is low.
Possible solution
Check that the file types recorded
on the USB device are compatible
with this system.
Select "FILE TYPE". You can play
back only the files of the types
selected with "FILE TYPE".
If the main unit has read the file
before you make the "FILE TYPE"
setting, reset "FILE TYPE" to the
desired file type, and then discon-
nect the USB device and connect
it again.
Possible solution
Connect a microphone.
Activate the microphone mixing
function.
Start playback. The menu screen
disappears and the scoring func-
tion starts working.
To obtain a correct score, sing the
song completely.
Sing in a loud voice, adjust the
sensitivity if possible or replace the
microphone with one with a higher
sensitivity.
Reference
page
64
41
Reference
page
45
47
49
49
49