Harman Kardon AVR 435 Owner's Manual

Also see for AVR 435: Brochure & specs Brochure & specs Brochure Service manual Reference guide

56 TROUBLESHOOTING GUIDETroubleshooting GuideProcessor ResetIn the rare case where the unit’s operation or thedisplays seem abnormal, the cause may involvethe erratic operation of the system’s memory ormicroprocessor.To correct this problem, first unplug the unit fromthe AC wall outlet and wait at least threeminutes. After the pause, reconnect the ACpower cord and check the unit’s operation. If thesystem still malfunctions, a system reset mayclear the problem.To clear the AVR’s entire system memory includ-ing tuner presets, output level settings, delaytimes and speaker configuration data, first putthe unit in Standby by pressing the SystemPower Control button 2. Next, press theSurround Mode 5 and the RDS ^ buttonssimultaneously.The unit will turn on automatically and displaythe RESET message in the Main Infor-mation Display ˜. Note that once you havecleared the memory in this manner, it is necessaryto re-establish all system configuration settingsand 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 or severeAC line interference that has corrupted thememory or microprocessor.If these steps do not solve the problem, consultan authorized Harman Kardon service depot.SYMPTOM CAUSE SOLUTIONUnit does not function when Main • No AC Power • Make certain AC power cord is pluggedPower Switch 1 is pushed into a live outlet• Check to see if outlet is switch controlledDisplay lights, but no sound • Intermittent input connections • Make certain that all input and speakeror picture connections are secure• Mute is on • Press Mute button ,• Volume control is down • Turn up volume controlUnits turns on, but Front-Panel • Display brightness is turned off • Follow the instructions in the Display Brightness sectionDisplay does not light on page 41 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 receiverlight around Power switch 2 is red due to possible short and 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 mono • There is no surround information from mono sources (except withTheater and Hall surround modes)• Incorrect configuration • Check speaker mode configuration• Stereo or Mono program material • Some surround modes may not create rear-channel informationfrom nonencoded programsUnit does not respond to • Weak batteries in remote • Change remote batteriesremote commands • Wrong device selected • Press the AVR Selector 5• Remote sensor ¯ is obscured • Make certain front-panel sensor is visible to remote orconnect remote sensorIntermittent buzzing in tuner • Local interference • Move unit or antenna away from computers, fluorescent lights,motors or other electrical appliancesLetters flash in the Channel Indicator • Digital audio feed paused • Resume play for DVDDisplay Ú and Digital Audio stops • Check that Digital Signal is fed to the Digital Input selected

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