HK 630 - Harman Kardon Audio Service Manual (repair manual). Page 2

ENGLISH

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.

No lights illuminate when POWER cord is plugged into AC outlet

• The unit is plugged into a live outlet

No sound is heard

• Speaker switches corresponding to the desired speakers are pressed
• Correct source button has been pressed
• Volume is turned up
• Speaker wires are connected properly
• Hook-up wires to source component are connected properly

Sound is not heard from the speaker system on one side

• The speaker wires and connection wires are connected correctly
• The balance control knob is set to the center

When listening to stereo sound, the left and right sounds are reversed

• The speaker wires are connected correctly
• The wires between components are connected correctly

Intermittent or continuous buzzing or hissing

• The unit is away from fluorescent lights, TV, motors and other electrical appliances

The remote control and front panel controls don't appear to work

• Disconnect the AC line cord from the wall socket, wait 5 minutes and then re-connect it

Phone sound is too faint, has hum, ringing, or »howl«

• Ground wire from turnable has been connected to ground terminal on amplifier
• Cable from turntable is away from power cords and speaker cables
• Turntable is away from speakers
• Turntable is on stable surface