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Troubleshooting Guide - Kenwood KAC-PS650D Instruction Manual

5-channel power amplifier
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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
No sound.
(No sound from one side.)
(Blown fuse.)
The output level is too
small (or too large).
The sound quality is bad.
(The sound is distorted.)
The external amplifier
controller (B.M.S.) will not
work.
14
English
POSSIBLE CAUSE
• Input (or output) cables are
disconnected.
• Protection circuit may be
activated.
• Volume is too high.
• The speaker cord is shorted.
The input sensitivity adjusting
control is not set to the correct
position.
• The speakers wire are
connected with wrong + / -
polarity.
• A speaker wire is pinched by a
screw in the car body.
• The switches may be set
improperly.
• The B.M.S. switch setting is
incorrect.
• The external amplifier control
wire has come loose.
SOLUTION
• Connect the input (or output)
cables.
• Check connections by referring
to "Indicator".
• Replace the fuse and use lower
volume.
• After check the speaker cord and
fixing the cause of the short,
replace the fuse.
Adjust the control correctly
referring to "Controls".
• Connect them properly checking
the + / - of the terminals and
wires well.
• Connect the speaker wire again
so that it is not pinched by
anything.
• Set switches properly by
referring to "System examples".
• The B.M.S. switch is set to
"REMOTE".
• Check that the external amplifier
control wire is properly
connected.

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