Harman Kardon HK 3370, Service Manual

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TROUBLESHOOTING GUIDE
TROUBLESHOOTING GUIDE
This 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 outlet
Main power switch is pressed in
No sound is heard Unit has not been muted
Correct input function selector button has been pressed
Volume is turned up
The speakers have been turned on using the Speaker Selectors
No output from one or more channels Cables are not defective: check/replace speaker cables
Tuner sound has a large amount of interference, or The antenna is properly connected
The “Stereo” display is not illuminated, or The antenna is properly located
Tuner sound distorts and/or volume level is too low The antenna is set in the proper direction
The antenna is adequate to receive the desired station
Tuner is intermittent or continuously buzzing or hissing The 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
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
§
)
Turntable sounds distorted Turntable has been plugged into the Phono Input
§
,
as the other inputs are not compatable with turntable signal levels
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, first
turn the
unit
off by pressing the Main Power Switch and then
releasing it so that it extends out beyond the front panel and the word
“OFF” is visible in red lettering at the top of the switch. Next, press and
hold the
T•Mon and CD Input Selector buttons on the front panel
ONLY. While holding these buttons in, press the Main Power Switch in
until it latches so that the button is flush with the front panel. The
Information Display will briefly show the word
RESET , and then return to
normal operation.
hk3370/hk3470 Microprocessor Reset Instructions
hk3370/hk3470 harman/kardon
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