Harman-Kardon HK3490 owner manual Troubleshooting Guide

TROUBLESHOOTING GUIDE

SYMPTOM	CAUSE	SOLUTION
Unit does not function when Main	• No AC power	• Make certain AC power cord is plugged into
Power Switch is pushed		a live outlet
		• Check to see whether outlet is switch-controlled
Display lights, but there’s no	• Intermittent input connections	• Make certain that all input and speaker connections
sound or picture		are secure
	• Mute is on	• Press Mute Button
	• Volume Control is down	• Turn up Volume Control
	• Desired source not selected	• Press correct Source Selector
	• Speakers deactivated	• Press Speaker 1 or Speaker 2 Button
	• Headphones are in use	• Unplug headphones
	• Jumper pins between Preamp Outputs	• Replace jumper pins or, if external amplifier
	and Main-Amp Inputs were removed	is in use, make sure it is turned on
No sound from any speaker;	• Amplifier is in Protection mode	• Check speaker-wire connections for shorts at receiver and
light around Power Switch is red	due to possible short	speaker ends
	• Amplifier is in Protection mode	• Contact your local Harman Kardon service center
	due to internal problems
Unit does not respond to	• Weak batteries in remote	• Change remote batteries
remote commands	• Remote sensor is obscured	• Make certain front-panel sensor is visible to remote
		or connect an optional remote sensor
Intermittent buzzing in tuner	• Local interference	• Move unit or antenna away from computers, fluorescent
		lights, motors or other electrical appliances
Audio sources sound distorted	• CD player or other audio device	• Only plug a device into the Phono Inputs if it is a
	incorrectly plugged into Phono Inputs	turntable with a moving-magnet cartridge, or if it is a
		turntable with a moving-coil cartridge with a phono preamp
	• Turntable not plugged into Phono Inputs • Do not use a turntable with any inputs other than the Phono
		Inputs, unless it has a moving-magnet-type cartridge and
		includes a phono preamp
No video image	• Source device’s video output not	• Connect the source’s composite video output to
	connected to HK 3490	the correct video input on the HK 3490
	• Wrong source selected	• Press the correct Source Selector on the HK 3490
	• Video Monitor Output not connected	• Connect the HK 3490’s Video Monitor Output to a composite
	to display	video input on your television or video display
	• Wrong video input on video	• Consult the manual for your television for instructions on
	display selected	selecting the correct video input
	• Audio-only source selected	• It is not possible to view video while listening to the
		Phono, Tape/CDR or CD sources or to the tuner

In addition to the items shown above, additional information on troubleshooting possible problems with your HK 3490, or on installation-related issues, may be found in the list of “Frequently Asked Questions,” which is located in the Product Support section at www.harmankardon.com.

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