Harman Kardon AVR 335 Owners Manual - Page 53

TROUBLESHOOTING GUIDE SYMPTOM CAUSE SOLUTION 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 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 • Make certain AC power cord is plugged into a live outlet • Check to see whether outlet is switch-controlled 49 47 45 43 • Make certain that all input and speaker connections are4s8ecur4e6 44 42 • Pre3s5s Mu3t7e Bu3tt9on 41 • Tur3n4up v3o6lume3c8ontro4l0 37 41 47 51 • Fo3llo3w the26instru2c5tions3i7n the D3is6play4B0righ4tn6ess s5e0ction on3p2age 3237so2th4at th3e6displa3y 5is se3t 9to V4F5D F49ULL 31 28 23 35 34 38 44 48 • Ch3ec0k sp2ea9ker2w2ire c3on4nectio3ns3for shorts4a3t receiver and • spe2a9ker Co2nt8act ye3onu0drslo2ca1l 31 20 Ha3rm3an 32 32 Kardon 31 42 service center No sound from surround or center speakers • Incorrect surround mode • Input is monaural • Incorrect configuration • Stereo or Mono program material • 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 Unit does not respond to remote commands • Weak batteries in remote • Wrong device selected • Remote sensor is obscured • Change remote batteries • Press the AVR selector • Make certain front-panel sensor is visible to remote, or connect remote sensor Intermittent buzzing in tuner • Local interference • Move unit or antenna away from computers, fluorescent lights, motors or other electrical appliances Letters flash in the channel indicator display and digital audio stops • Digital audio feed paused • Resume play for DVD • Check that Digital Input is selected Fan does not appear to operate • Additional cooling may not be required • 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. In addition to the items shown above, additional information on troubleshooting possible problems with your AVR 335, or installation-related issues, may be found in the list of "Frequently Asked Questions" which is located in the Product Support section of our Web site at www.harmankardon.com. 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 335'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. 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. TROUBLESHOOTING GUIDE 53