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Troubleshooting Guide
What might appear to be a malfunction in your unit may just be the result of slight
misoperation or miswiring. Before calling service, first check the following table for possible
problems.
PROBLEM POSSIBLE CAUSE SOLUTION
No sound.
(No sound from one side.)
The output level is too
small (or too large).
The sound quality is bad.
(The sound is distorted.)
If the slide panel moves of
its own accord.
The external amplifier
controller (B.M.S.) will not
work.
• Input (or output) cables are
disconnected.
• Protection circuit may be
activated.
• The fuse may be blown because
the volume was too high.
The input sensitivity adjusting
control is not set to the correct
position.
• The speakers cable are
connected with wrong + / -
polarity.
• A speaker cable is pinched by a
screw in the car body.
• The switches may be set
improperly.
• The system is in DEMO mode.
• The slide panel has gone into
remote operation mode.
• The B.M.S. switch is set to
"B.M.S. (+6)".
• The external amplifier control
cable has come loose.
• Connect the input (or output)
cables.
• Check connections by referring
to "Indicator".
• Replace the fuse with a new
fuse and use a lower volume.
Adjust the control correctly
referring to “Controls”.
• Connect them properly checking
the + / - of the terminals and
cables well.
• Connect the speaker cable again
so that it is not pinched by
anything.
• Set switches properly by
referring to "System examples".
• Cancel DEMO mode by pressing
the OPEN/CLOSE button.
• Check the B.M.S. and operate
the slide panel remotely or
manually.
• The B.M.S. switch is set to
"(REMOTE)".
• Check that the external amplifier
control cable is properly
connected.
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English