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Troubleshooting Guide - Kenwood KAC-6402 Instruction Manual

4/3/2 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.)
12
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.
SOLUTION
• Connect the input (or output)
cables.
• Check connections by referring to
<Protection function>.
• 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>.

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6402 - kac amplifier