Kenwood KR-V8090, KR-V9090 Case of difficulty, Resetting the Microcomputer, Amplifier, Tuner

In case of difficulty

Resetting the Microcomputer

If the microcomputer may malfunction (unit cannot be operated, or shows an erroneous display) if the power cord is unplugged while the power is ON, or due to some other external factor. If this happens, execute the following procedure to reset the microcomputer and return the unit to its normal operating condition.

KR-V9090/8090 (En/T)

With the power cord plugged in, turn the POWER key	5	5
OFF. Then, while holding down the ON/STANDBY key,
press POWER.

•Please note that resetting the microcomputer will clear the contents of the memory and returns the unit to the state it was in when it left the factory.

Amplifier

Symptom		Cause		Remedy
No sound from the speakers.	•	The speaker cords are disconnected.	• Connect them properly referring to “Connect-
				ing the speakers”	@
	• VOLUME is set to the minimum position.		•	Adjust the volume to a proper level.
	• MUTE is ON.		• Turn OFF the MUTE.		(
	• The SPEAKERS switches are set to OFF.		• Set the SPEAKERS switch(es) to ON. *
The standby indicator blinks and sound is	•	Speaker cords are short-circuited.	• Turn the power off, eliminate the		short-
not output.				circuiting, then turn on the power again.
					@
Sound is not output from one of the speak-	•	The speaker cord is disconnected.	•	Connect it properly referring to “Connecting
ers.				the speakers”.
	• The speaker balance is set to an extreme		• Adjust the speaker levels using the test tone.
		position.			%
Sound is not output from the rear (sur-	• The rear speaker cords and/or the center		•	Connect it properly referring to “Connecting
round) speakers and/or the center speaker,		speaker cord is disconnected.		the speakers”.
or their sound is very small.	• A surround mode has not been engaged.		• Select a surround mode.
	• The rear and/or center volume controls are set		• Adjust the speaker levels using the test tone.
		to the minimum level.			%
A humming noise is generated when the	•	The audio cord from the turntable is not con-	•	Insert the audio cord plugs securely into the
PHONO input selector is selected.		nected to the PHONO jacks.		PHONO jacks.
	•	The turntable is not grounded.	• Connect the grounding wire to the GND termi-
				nal on the rear panel.

Tuner

Symptom		Cause		Remedy
Radio Stations cannot be received.	• No antenna is connected.		•	Connect an antenna.
	•	The broadcast band is not set properly.	•	Set the broadcast band properly.
	• The frequency of the desired station is not		•	Tune the frequency of the desired station.
		tuned.		£
Interference.	•	Noise due to ignition noise from an automo-	• Install the outdoor antenna away from the
		bile.		road.
	• Noise due to interference from an electric		•	Turn off the power to the appliance.
		appliance.
	•	Noise due to a nearby TV set.	•	Install the receiver farther away from the TV.
A station which was preset cannot be re-	• The preset station belongs to a frequency that		•	Preset a station with a receivable frequency.
ceived by pressing the corresponding nu-		cannot be received.
meric key.	• The preset memory was cleared because the		•	Preset the station again.
		power cord had been unplugged for a long
		period of time.

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