TROUBLESHOOTING GUIDE 17TROUBLESHOOTING GUIDEThis unit is designed for trouble-free operation. Most problems users encounter are due to operating errors. So, if you have a problem, first check this list for a possible solution.If the problem persists, consult your authorized Harman Kardon service center.If the problem is . . . Make sure that the . . .No lights appear when POWER button is pressed Unit is plugged into a live outletMain power switch is pressed inNo sound is heard Unit has not been mutedCorrect input function selector button has been pressedVolume is turned upSpeakers have been turned on using the Speaker SelectorsHeadphones are not in useJumper pins are in place, unless an external amplifier is in useNo output from one or more channels Cables are not defective: check/replace speaker cablesTuner sound has a large amount of interference, or Antenna is properly connectedThe “Stereo” display is not illuminated, or Antenna is properly locatedTuner sound distorts and/or volume level is too low Antenna is set in the proper directionAntenna is adequate to receive the desired stationTuner is intermittent or continuously buzzing or hissing Unit is away from fluorescent lights, TVs, motors andother electrical appliancesRemote does not function correctly Batteries are not weak, and replace them if necessaryRoom lighting is not overly brightCassette or CD sounds distorted Cassette deck or CD player has not been plugged into the Phono Input ™(only use the outputs of a turntable or tone arm with the Phono Input ™)Turntable sounds distorted Turntable has been plugged into the Phono Input ™,as the other inputs are not compatable with turntable signal levelsNo video image Video source unit’s video ouput is properly connected, the source is turned on and the correct videoinput on the HK 3380 has been selectedVideo Monitor Output · is connected to a TV or video display, and that the TV is turned on and theproper input on the TV has been selected