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Troubleshooting Guide - Kenwood KCA-R70FM Instruction Manual

Fm modulator system
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KCA-R70FM_U.S
02.7.2
11:20 AM

Troubleshooting Guide

What might seem 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.
General
?
The power does not turn
ON.01
✔ The fuse has blown.
☞ After checking for short circuits in the wires, replace the fuse with
one with the same rating.
✔ No ACC position on vehicle
☞ Connect the same wire to the ignition as the battery wire.
?
Nothing happens when the buttons are
✔ The computer chip in the unit is not functioning normally.
☞ Press the Reset button on the display unit (page 3).
?
No sound or sound is
low.52
✔ The O-N selection switch of the disc changer is not set properly.
☞ Set the O-N selection switch to "N" position.
✔ The radio volume is sets to the minimum
☞ Turn the radio volume up.
✔ The input/output wire or wiring harness is connected
☞ Connect the input/output wire or wiring harness correctly. See
"Connecting Wires to Terminals" (Page 18,19).
?
Sound
distortion.67
✔ The signal levels differ depending on sources.
☞ Change the Modulation level / Dynamic control setting. (Page 13)
?
Nothing appears on the
display.04
✔ The control output of the display unit is not connected properly.
☞ Connect the control output properly.
Page 21
ignition.02
pressed.04
level.3
incorrectly.55
— 21 —
Sirius source
?
The Sirius mode cannot be
selected.2
✔ The Sirius connection wire is not connected.
☞ Use the Sirius connection wire to connect the control unit and the
Sirius satellite radio tuner.
✔ Connect the power supply of the Sirius satellite radio
☞ Connect the battery wire and ground wire to the Sirius satellite
radio tuner.
✔ The Sirius satellite radio tuner is not connected
☞ Connect the Sirius satellite radio tuner directly to this unit.
?
No sound can be heard, or the volume is
✔ The input/output wires or wiring harness are connected incorrectly.
☞ Reconnect the input/output wires and/or the wiring harness
correctly.
?
No broadcast can be
received2
✔ The Sirius antenna is not connected.
☞ Connect it properly.
✔ No subscription is
established.53
☞ Subscribe to SIRIUS.
?
No sound is heard even though the information concerning the
Sirius satellite radio tuner is
displayed.67
✔ The radio volume is sets to the minimum level.
☞ Turn the radio volume up.
✔ The microcomputer does not function
☞ Press the Reset button of the display unit.(Page 3)
✔ The system is not connected
properly.69
☞ Connect the system properly. See <Connecting Wires to
Terminals>. (Page 18,19)
tuner.53
properly.55
low.58
correctly.68

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