Harman Kardon AVR325 Service Manual

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Contents

Harman Kardon AVR325 Service Manual Manual pdf 17 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 selected43Processor 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 325’s entire system memory includ-ing tuner presets, output level settings, delay times andspeaker configuration data, first put the unit in Standbyby pressing the System Power Control Button 2.Next, press and hold the Surround Mode 7 andthe Tuner Mode Selector ^ buttons for threeseconds.The unit will turn on automatically and display theRESET message in the Main InformationDisplay ˜.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.17TROUBLESHOOTING GUIDEAVR325 harman/kardon17