Troubleshooting - JVC KW-M730BT Instruction Manual

Troubleshooting

Problems and Solutions
If any trouble occurs, first check the following
table for possible problems.
NOTE
• Some functions of this unit may be disabled by
some settings made on this unit.
• What might seem to be a malfunction in your
unit may just be the result of slight misoperation
or miswiring.
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About settings
• Cannot set up the subwoofer.
• Cannot set up subwoofer phase.
• No output from the subwoofer.
• Cannot set up the low pass filter.
• Cannot set up the high pass filter.
Subwoofer is not set to on.
h Set the subwoofer to on. See Speaker/ X'over
setup (P.47).
The dual zone function is enabled.
h Set the dual zone function to off. See Zone Control
(P.52).
• Cannot select the output destination of the
subsource in the dual zone.
• Cannot adjust the volume of the rear speakers.
The dual zone function is disabled.
h Set the dual zone function to on. See Zone Control
(P.52).
• Cannot set up the equalizer.
• Cannot set up the crossover network.
The dual zone function is enabled.
h Set the dual zone function to off. See Zone Control
(P.52).
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About audio operations
Radio reception is poor.
The car antenna is not extended.
h Pull out the antenna all the way.
The antenna control wire is not connected.
h Connect the wire correctly. See Connecting the
system and external components (P.61).
Cannot select a folder.
The random play function is enabled.
h Turn off the random function.
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Other
The Touch Sensor Tone doesn't sound.
The preout jack is being used.
h The Touch Sensor Tone cannot be output from the
preout jack.
Error Messages
When you fail to operate the unit correctly, the
cause of the failure appears as the message on
the screen.
here is an error in the speaker wiring. Please check
the connections.
Protective circuit has been activated because a speaker
cord has shorted or it has come in contact with the car
chassis.
h Wire or insulate the speaker cord as appropriate and
turn the power off and on again.
Error 07–67
The unit is not operating correctly due to some reason
or other.
h Turn the power off and on again. If the "Error 07−67"
message does not disappear, see your nearest JVC
dealer.
No Device (USB device)
The USB device is selected as a source although no USB
device is connected.
h Change the source to any source other than USB/
iPod. Connect a USB device, and change the source
to USB again.
Disconnected (iPod, Bluetooth audio player)
The iPod/Bluetooth audio player is selected as a source
although no iPod/Bluetooth audio player is connected.
h Change the source to any source other than iPod/
Bluetooth. Connect an iPod/Bluetooth audio player,
and change the source to iPod/Bluetooth again.
No Media file
The connected USB device contains no playable audio
file. Media was played that doesn't have data recorded
that the unit can play.
h See Playable Media and Files (P.64) and try
another USB device.
USB device over current status detected.
The connected USB device is rated a current capacity
higher than the allowable limit.
h Check the USB device. Some trouble may have
occurred to the connected USB device.
h Change the source to any source other than USB.
Remove the USB device.
Troubleshooting
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English