Troubleshooting Guide - Kenwood KRC-777R Instruction Manual

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
The power does not turn on.
No sound can be heard, or the
volume is low.
The tape does not go in. /
No sound can be heard even
though the tape display is
made.
Nothing happens when the
buttons are pressed.
The sound quality is poor or
distorted.
Radio reception is poor.
The faceplate does not open or
close.
POSSIBLE CAUSE
The fuse has blown.
No ACC position on vehicle ignition.
The Attenuator function is turned on.
The fader and/or balance settings are set all the way to
one side.
The input/output cables or wiring harness are connected
incorrectly.
The cassette tape is bad.
The car ignition was turned off during tape eject; or the
tape was pulled out during loading, switching the mode to
tape mode even though no tape is in.
The computer chip in the unit is not functioning normally.
The tape head is dirty.
A speaker cable may be pinched by a screw in the car.
The speakers are not wired correctly.
The car antenna is not extended.
The antenna control cable is not connected.
The ambient temperature is too low.
After checking for short circuits in the cables, replace the
fuse with one having the same rating.
Connect the same cable to the ignition as the battery cable.
Turn off the Attenuator function.
Reset the fader and/or balance settings.
Reconnect the input/output cables and/or the wiring harness
correctly. See the section on "Connecting Cables to
Terminals".
Try playing another cassette tape. If no problem is
experienced, the first tape was bad.
Press the Eject button.
Press the reset button on the unit (see page 4).
Clean the tape head, referring to the section on "Cleaning
the tape head" (see page 4).
Check the speaker wiring.
Reconnect the speaker cables so that each output terminal
is connected to a different speaker.
Pull out the antenna all the way.
Connect the cable correctly, referring to the section on
"Connecting Cables to Terminals".
Warm up your car.
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SOLUTION