Troubleshooting Guide - Harman Kardon HK 3490 Service Manual

harman/kardon

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...
No lights appear when System Power 2 button
is pressed
No sound is heard
No output from one or more channels
Tuner sound has a large amount of interference, or
the "Stereo" display is not illuminated, or
Tuner sound distorts and/or is noisy
Tuner is intermittent or continuously buzzing or hissing
Remote does not function correctly
Cassette or CD sounds distorted
Turntable sounds distorted
No video image
Make sure that the...
Unit is plugged into a live outlet.
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 67ü√.
Cables are not defective: check/replace speaker cables.
Antenna is properly connected.
Antenna is properly located.
Antenna is set in the proper direction.
Antenna is adequate to receive the desired station.
Unit is away from fluorescent lights, TVs, motors and
other electrical appliances.
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 fo r fluorescent lighting, which may be interfering
with the IR transmission.
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.)
Turntable has been plugged into the Phono Input 5,
as the other inputs are not compatable with turntable signal levels
Video source unit's video ouput is properly connected, the source is turned on and the correct
video input on the HK 3490/HK 3390 has been selected
Video Monitor Output K is connected to a TV or video display, and that the TV is turned
on and the proper input on the TV has been selected
HK 3490/230 Service Manual
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