Harman Kardon AVR 330 Owners Manual - Page 52

TROUBLESHOOTING GUIDE SYMPTOM Unit does not function when Main Power Switch is pushed Display lights, but no sound or picture Unit turns on, but front-panel display does not light up No sound from any speaker; light around power switch is red No sound from surround or center speakers Unit does not respond to remote commands Intermittent buzzing in tuner Letters flash in the channel indicator display and digital audio stops Fan does not appear to operate CAUSE • No AC power • Intermittent input connections • Mute is on • Volume control is down • Display brightness is turned off • Amplifier is in protection mode due to possible short • Amplifier is in protection mode due to internal problems • Incorrect surround mode • Input is monaural • Incorrect configuration • Stereo or Mono program material • Weak batteries in remote • Wrong device selected • Remote sensor is obscured • Local interference • Digital audio feed paused • Additional cooling may not be required SOLUTION • Make certain AC power cord is plugged into a live outlet • Check to see whether outlet is switch-controlled • Make certain that all input and speaker connections are secure • Press Mute Button 42 • Turn up volume control • Follow the instructions in the Display Brightness section on page 31 so that the display is set to VFD FULL • Check speaker wire connections for shorts at receiver and speaker ends • Contact your local Harman Kardon service center • Select a mode other than Stereo • There is no surround information from mono sources • Check speaker mode configuration • The surround decoder may not create center- or rear-channel information from nonencoded programs • Change remote batteries • Press the AVR selector • Make certain front-panel sensor is visible to remote, or connect remote sensor • Move unit or antenna away from computers, fluorescent lights, motors or other electrical appliances • Resume play for DVD • Check that Digital Input is selected • The fan is activated only when additional cooling is required due to high internal temperature. It is normal for the fan to be inactive at normal volume levels. Processor Reset In the rare case where the unit's operation or the displays seem abnormal, the cause may involve the erratic operation of the system's memory or microprocessor. To correct this problem, first unplug the unit from the AC wall outlet and wait at least three minutes. After the pause, reconnect the AC power cord and check the unit's operation. If the system still malfunctions, a system reset may clear the problem. To clear the AVR 330's entire system memory including tuner presets, output level settings, delay times and speaker configuration data, press and hold the Tone Mode Button 5 buttons for three seconds. The unit will turn on automatically. NOTE: Resetting the processor will erase any configuration settings you have made for speakers, output levels, surround modes and digital input assignments, as well as the tuner presets. After a reset, the unit will be returned to the factory presets, and all settings for these items must be reentered. If the system is still operating incorrectly, there may have been an electronic discharge or severe AC line interference that has corrupted the memory or microprocessor. If these steps do not solve the problem, consult an authorized Harman Kardon service center. 52 TROUBLESHOOTING GUIDE