Harman Kardon AVR230 Service Manual

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Contents

Harman Kardon AVR230 Service Manual Manual pdf 13 page image

TROUBLESHOOTING GUIDESYMPTOM CAUSE SOLUTIONUnit does not function when Main • No AC Power • Make certain AC power cord is plugged intoPower Switch is pushed a live outlet• Check to see whether outlet is switch-controlledDisplay lights, but no sound • Intermittent input connections • Make certain that all input and speaker connectionsor picture are secure• Mute is on • Press Mute Button• Volume control is down • Turn up volume controlUnit turns on, but front panel • Display brightness is turned off • Follow the instructions in the Display Brightness sectiondisplay does not light up on page 32 so that the display is set to VFD FULLNo sound from any speaker; • Amplifier is in protection mode • Check speaker wire connections for shorts at receiver andlight around power switch is red due to possible short speaker ends• Amplifier is in protection mode • Contact your local Harman Kardon service centerdue to internal problemsNo sound from surround or • Incorrect surround mode • Select a mode other than Stereocenter speakers • Input is monaural • There is no surround information from mono sources• Incorrect configuration • Check speaker mode configuration• Stereo or Mono program material • The surround decoder may not create center- or rear-channelinformation from nonencoded programsUnit does not respond to • Weak batteries in remote • Change remote batteriesremote commands • Wrong device selected • Press the AVR selector• Remote sensor is obscured • Make certain front panel sensor is visible to remoteor connect remote sensorIntermittent buzzing in tuner • Local interference • Move unit or antenna away from computers, fluorescentlights, motors or other electrical appliancesLetters flash in the channel indicator • Digital audio feed paused • Resume play for DVDdisplay and digital audio stops • Check that Digital Input is selectedFan does not appear to operate • Additional cooling may not be required • The fan is activated only when additional cooling is required due tohigh internal temperature. It is normal for the fan to be inactive atnormal volume levels.42Processor ResetIn the rare case where the unit’s operation or the dis-plays seem abnormal, the cause may involve the erraticoperation of the system’s memory or microprocessor.To correct this problem, first unplug the unit from theAC wall outlet and wait at least three minutes. After thepause, reconnect the AC power cord and check theunit’s operation. If the system still malfunctions, a sys-tem reset may clear the problem.To clear the AVR 230’s entire system memory includ-ing tuner presets, output level settings, delay times andspeaker configuration data, press and hold the ToneMode Button 5 button for three seconds. The unitwill turn on automatically.NOTE: Resetting the processor will erase any configu-ration settings you have made for speakers, outputlevels, surround modes, digital input assignments aswell as the tuner presets. After a reset the unit will bereturned to the factory presets, and all settings forthese items must be reentered.If the system is still operating incorrectly, there mayhave been an electronic discharge or severe AC lineinterference that has corrupted the memory ormicroprocessor.If these steps do not solve the problem, consult anauthorized Harman Kardon service center.TROUBLESHOOTING GUIDE 13TROUBLESHOOTING GUIDE13AVR230 harman/kardon