Troubleshooting/Specifications - Harman Kardon HK670 Service – Technical Manual

Troubleshooting
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...
No lights illuminate when power cord is plugged into AC outlet.
No sound is heard.
Sound is not heard from the speaker system on one side.
When listening to stereo sound, the left and right sounds are reversed. • The speaker wires are connected correctly.
Intermittent or continuous buzzing or hissing.
The remote control and front panel controls don't appear to work.
Humming noise when listening to LP
Howl or ringing when listening to LP.
Low sound level when listening to LP.
Specifications
Continuous Average Power Per Channel (FTC)
20 Hz – 20 kHz, both channels driven
Dynamic Power (IHF, 1 kHz Tone Burst)
High instantaneous current capability (HCC)
Power Bandwidth @ Half-Rated output, 8Ω
Frequency response @ 1W (+0/-3dB)
Damping factor (20Hz-20k Hz)
Signal-to-noise Ratio (Reference rated power output, A-WTD)
Input sensitivity/Impedance
Overload:
Tone control range, Bass @ 50 Hz/Treble @ 10 kHz
Power supply:
Power consumption:
Dimensions (Width X Height X Depth):
Weight:

TROUBLESHOOTING/SPECIFICATIONS

8
Make sure that...
• The unit is plugged into a live outlet.
• The round power button above "Power" on the front panel is pressed in.
• 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.
• The speaker wires and connection wires are connected correctly.
• The balance control knob is set to the center.
• The wires between components are connected correctly.
• The unit is away from fluorescent lights, TV, motors and other electrical appliances.
• Disconnect the AC line cord from the wall socket, wait 5 minutes and then re-connect it.
• Ground wire from record player has been connected to ground terminal on amplifier.
• Cable from record player is away from power cords and speaker cables.
• Record player is not to close to speakers.
• Record player is on stable surface.
• Cable from record player is connected to the Phono jacks.
• The phono cartridge is MM, not MC.
NOMINAL
8 Ohms: 80 Watts@<0.09%THD
4 Ohms: 120 Watts@<0.3%THD
8 Ohms: 115 Watts
4 Ohms: 200 Watts
2 Ohms: 310 Watts
±75 Amps
<10 Hz - 150 kHz
5 Hz - 150 kHz
>125
Tuner/CD 95 dB
Phono (MM): 75 dB
Tuner/CD 270mV/43k Ohms
Phono (MM): 4.0mV/47k Ohms
Tuner/CD 6V
Phono (MM): 110 mV
±10 dB/±10 dB
AC 230V, 50/60 Hz
345 W
439 X 110 X 395 mm
10.35 kg