Harman-Kardon HK 3470 - Manual (Page 20)

20 TROUBLESHOOTING GUIDE
Troubleshooting Guide
T his unit is designed for trouble-free operation. Most problems users encounter are due to operating errors. 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 System Power 2 button Unit is plugged into a live outlet.
is pressed Main power switch 1 is pressed in.
No sound is heard Unit has not been muted.
Correct input function selector button has been pressed.
Volume is turned up.
Speakers have been turned on using the Speaker Selectors 67≈∑.
No output from one or more channels Cables are not defective: check/replace speaker cables.
Tuner sound has a large amount of interference, or Antenna is properly connected.
the “Stereo” display is not illuminated, or Antenna is properly located.
Tuner sound distorts and/or is noisy Antenna is set in the proper direction.
Antenna is adequate to receive the desired station.
Tuner is intermittent or continuously buzzing or hissing Unit is away from fluorescent lights, TVs, motors and
other electrical appliances.
Remote does not function correctly Batteries are not weak, and replace them if necessary.
Correct device page has been selected by pressing the Source Selector key ç.
Remote sensor is not obstructed, and remote is pointing directly at sensor at
an angle of no more than 30 degrees. Also, check for fluorescent lighting, which
may be interfering with the IR transmission.
Remote has been reprogrammed correctly. If you are in doubt, reset the remote
to the factory default programming using the procedure outlined on page 19.
Cassette 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 tonearm with the Phono input.)