Kenwood KCA-R71FM - Manual (Page 21)

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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 ignition. 02
☞ Connect the same wire to the ignition as the battery wire.
? Nothing happens when the buttons are pressed. 04
✔ 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 level. 3
☞ Turn the radio volume up.
✔ The input/output wire or wiring harness is connected incorrectly. 55
☞ 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.
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 tuner. 53
☞ Connect the battery wire and ground wire to the Sirius satellite
radio tuner.
✔ The Sirius satellite radio tuner is not connected properly. 55
☞ Connect the Sirius satellite radio tuner directly to this unit.
? No sound can be heard, or the volume is low. 58
✔ 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 received 2
✔ 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 correctly. 68
☞ Press the Reset button of the display unit.(Page 3)
✔ The system is not connected properly. 69
☞ Connect the system properly. See
Terminals>. (Page 18,19)
Troubleshooting Guide
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