JVC SP-NXF7W ユーザーズマニュアル

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■For a connected USB device
■For the karaoke function 
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.
Problem
Possible cause
Possible solution
Reference 
page
Files on a USB device 
cannot be played back.
If “CANNOT PLAY THIS 
DEVICE” appears on the TV 
screen, the files on a USB 
device are not playable.
Check that the file types recorded 
on the USB device are compatible 
with this system.
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MP3, WMA, WAV, 
JPEG, ASF, DivX, 
MPEG1 or MPEG2 file 
cannot be played back. 
The connected USB device 
may include files of different 
types (MP3, WMA, WAV, JPEG, 
ASF, DivX, MPEG1 or MPEG2).
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. 
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Problem
Possible cause
Possible solution
Reference 
page
The karaoke function 
cannot be activated. 
A microphone is not connected 
to the main unit. 
Connect a microphone.
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The microphone mixing func-
tion is not activated. 
Activate the microphone mixing 
function. 
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The scoring function 
cannot be used. 
The menu screen of a DVD 
VIDEO, VCD, SVCD is dis-
played on the TV screen.
Start playback. The menu screen 
disappears and the scoring func-
tion starts working.
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The score is displayed 
as “_ _” or seems 
wrong. 
The singing time is less than 3 
minutes. 
To obtain a correct score, sing the 
song completely.
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Your voice is too small or the 
sensitivity of the connected 
microphone is low.
Sing in a loud voice, adjust the 
sensitivity if possible or replace the 
microphone with one with a higher 
sensitivity. 
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Troubleshooting (continued)
NX-F3_NX-F7[US]-12.fm  Page 71  Friday, February 29, 2008  8:52 AM