Harman Kardon AVR500 Owners Manual - Page 39

Troubleshooting Guide SYMPTOM Unit does not function when Power Switch is pushed CAUSE • No AC Power Display lights, but no sound or picture • Intermittent input connections • Mute is on • Volume control is down 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 • 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 Intermittent buzzing in tuner • Local interference SOLUTION • Make certain AC power cord is plugged into a live outlet • Check to see if outlet is switch controlled • Make certain that all input and speaker connections are secure • Press Mute button • Turn up volume control • Follow the instructions in the Display Brightness section on page 20 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 depot • Select a mode other than Stereo • There is no surround information from mono sources • Check speaker mode • 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 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 500's entire system memory including tuner presets, output level settings, delay times and speaker configuration data, first turn the unit off by pressing and releasing the Main Power Switch 1 so that it pops out from its normal recessed position. Next, press and hold the AM/FM $ and the Dolby Pro Logic Ó buttons while pushing in the Main Power Switch 1 to turn the unit back on. Note that once you have cleared the memory in this manner, it is necessary to re-establish all system configuration settings and tuner presets. NOTE: Resetting the processor will erase any configuration settings you have made for speakers, output levels, surround modes, 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 depot. 38 TROUBLESHOOTING GUIDE