Harman Kardon AVR320 Service Manual

Also see for AVR 320: Manual Service manual Product information Owner's manual Owner's manual

Contents

Harman Kardon AVR320 Service Manual Manual pdf 15 page image

SYMPTOM 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 • Mute is on are secure• Volume control is down • Press Mute button• 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 35 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 depotdue 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 selectedProcessor ResetIn the rare case where the unit’s operation orthe displays seem abnormal, the cause mayinvolve the erratic operation of the system’smemory or microprocessor.To correct this problem, first unplug the unitfrom the AC wall outlet and wait at least threeminutes. After the pause, reconnect the ACpower cord and check the unit’s operation. Ifthe system still malfunctions, a system resetmay clear the problem.To clear the AVR 320’s entire system memoryincluding tuner presets, output level settings,delay times and speaker configuration data,first put the unit in Standby by pressing theSystem Power Control Button 2. Next,press and hold the Tone Mode 8 and theFM Mode Selector ^ buttons for threeseconds.The unit will turn on automatically and displaythe RESET message in the MainInformation Display Y. Note that once youhave cleared the memory in this manner, it isnecessary to reestablish all system configurationsettings and tuner presets.NOTE: Resetting the processor will erase anyconfiguration settings you have made forspeakers, output levels, surround modes, digitalinput assignments as well as the tuner presets.After a reset the unit will be returned to thefactory presets, and all settings for these itemsmust be reentered.If the system is still operating incorrectly, theremay have been an electronic discharge orsevere AC line interference that has corruptedthe memory or microprocessor.If these steps do not solve the problem, consultan authorized Harman Kardon service center.15 TROUBLESHOOTING GUIDETroubleshooting GuideAVR320 harman/kardon