HK 3370 (serv.man10) - Harman Kardon Audio User Guide / Operation Manual. Page 16

16 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.

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 67ü√.

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.

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.)