Troubleshooting Guide - Kenwood KDC-8090R 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.
If you have selected Standby
mode, the power will go OFF
automatically.
Nothing happens when the
buttons are pressed.
Radio reception is poor.
The memory is erased when
the ignition is turned off.
The faceplate does not open or
close.
The TEL mute function does
not work.
The TEL mute function turns
on even though the TEL mute
cable is not connected.
Free switching of the sound
quality.
Audio control setting cannot be
achieved.
POSSIBLE CAUSE
The fuse has blown.
No ACC position on vehicle ignition.
The Power Off Timer function has been activated.
The computer chip in the unit is not functioning normally.
The car antenna is not extended.
The antenna control cable is not connected.
The battery cable has not been connected to the proper
terminal.
The ignition and battery cable are incorrectly connected.
The faceplate is incorrectly attached.
The TEL mute cable is not connected properly.
The TEL mute cable is touching a metal part of the car.
The system Q function is set on Scan mode.
The system Q function is set on Scan mode.
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.
If you do not want the power to go OFF automatically,
cancel the Power Off Timer function.
Press the reset button on the unit (see page 4).
Pull out the antenna all the way.
Connect the cable correctly, referring to the section on
"Connecting Cables to Terminals".
Connect the cable correctly, referring to the section on
"Connecting Cables to Terminals".
Connect the cable correctly, referring to the section on
"Connecting Cables to Terminals".
Reattach the faceplate correctly, See the section on
"Removing the Faceplate".(page.14)
Connect the cable correctly, referring to the section on
"Connecting Cables to Terminals".
Pull the TEL mute cable away from the metal part of the
car.
Refer to the "System Q" page and switch it to a
function other than Scan mode. (see page 13)
Refer to the "System Q" page and switch it to a
function other than Scan mode.(see p. 13).
— 50 — — 50 —
SOLUTION