Troubleshooting - JVC KW-V640BT Instruction Manual

Troubleshooting

Troubleshooting
What appears to be trouble is not always serious.
Check the following points before calling a service
center.
• For operations with external components, refer also
to the instructions supplied with the adapters used
for connection (as well as the instructions supplied
with the external components).
General
No sound comes out of the speakers.
→ Adjust the volume to the optimum level.
→ Check the cords and connections.
No picture is displayed on the screen.
→ Turn on the screen. (Page 3)
The remote controller* does not work.
→ Replace the battery.
* For KW-M540BT Australian/New Zealand models: Purchase
optional remote controller, RM-RK258.
"No Signal"/"No Video Signal" appears.
→ Start playback on the external component
connected to the AV-IN input terminal.
→ Check the cords and connections.
→ Signal input is too weak.
"Miswiring DC Offset Error"/"Warning DC Offset
Error" appears.
→ A speaker cord has shorted or it has come into
contact with the car chassis. Wire or insulate the
speaker cord as appropriate, then reset the unit.
48 ENGLISH
"Parking off" appears.
→ No playback picture is shown when the parking
brake is not engaged.
"Learning Process Failed" appears.
→ Your steering remote controller is not compatible,
learning may not be completed. Consult your car
audio dealer for details.
Discs
(Only for KW-V640BT/KW-V640BTM)
Recordable/Rewritable discs cannot be played
back.
→ Insert a finalized disc.
→ Finalize the discs with the component which you
used for recording.
Tracks on the Recordable/Rewritable discs cannot
be skipped.
→ Insert a finalized disc.
→ Finalize the discs with the component which you
used for recording.
Playback does not start.
→ The format of files is not supported by the unit.
No picture appears on the external monitor.
→ Connect the video cord correctly.
→ Select the correct input on the external monitor.
MPEG1/MPEG2/MP3/WMA/WAV/AAC discs cannot
be played back.
→ Record the tracks using a compatible application
on the appropriate discs. (Page 45)
→ Add appropriate extension codes to the file names.
Tracks on the recordable/rewritable discs are not
played back as you have intended them to play.
→ Playback order may differ from the one played back
using other players.
"Region Code Error" appears.
→ You have inserted a DVD Video disc of an incorrect
region code. Insert a correct region code disc.
USB
"Reading" does not disappear from the screen.
→ Turn the power off and on again.
While playing a track, sound is sometimes
interrupted.
→ The tracks are not properly copied into the USB
device. Copy the tracks again, and try again.
Tracks are not played back as you have intended
them to play.
→ Playback order may differ from the one played back
using other players.
The source does not change to "USB" when you
connect a USB device while listening to another
source or "USB Device Error" appears when you
connect a USB device.
→ The USB port is drawing more power than the
design limit.
→ Turn the power off and unplug the USB device.
Then, turn on the power and reattach the USB
device.
→ If the above does not solve the problem, turn
the power off and on (or reset the unit) before
replacing with another USB device.