HK 670 (serv.man4) - Harman Kardon Audio User Guide / Operation Manual. Page 8

TROUBLESHOOTING/SPECIFICATIONS

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.
• The round power button above "Power" on the front panel is pressed in.

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.

Humming noise when listening to LP

• 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.

Howl or ringing when listening to LP.

• Record player is not to close to speakers.
• Record player is on stable surface.

Low sound level when listening to LP.

• Cable from record player is connected to the Phono jacks.
• The phono cartridge is MM, not MC.

Continuous Average Power Per Channel (FTC)

8 Ohms:

80 Watts@<0.09%THD

20 Hz – 20 kHz, both channels driven

4 Ohms:

120 Watts@<0.3%THD

Dynamic Power (IHF, 1 kHz Tone Burst)

8 Ohms:

115 Watts

4 Ohms:

200 Watts

2 Ohms:

310 Watts

High instantaneous current capability (HCC)

±75 Amps

Power Bandwidth @ Half-Rated output, 8

Ω

<10 Hz - 150 kHz

Frequency response @ 1W (+0/-3dB)

5 Hz - 150 kHz

Damping factor (20Hz-20k Hz)

>125

Signal-to-noise Ratio (Reference rated power output, A-WTD)

Tuner/CD

95 dB

Phono (MM):

75 dB

Input sensitivity/Impedance

Tuner/CD

270mV/43k Ohms

Phono (MM):

4.0mV/47k Ohms

Overload:

Tuner/CD

6V

Phono (MM):

110 mV

Tone control range, Bass @ 50 Hz/Treble @ 10 kHz

±10 dB/±10 dB

Power supply:

AC 230V, 50/60 Hz

Power consumption:

345 W

Dimensions (Width X Height X Depth):

439 X 110 X 395 mm

Weight:

10.35 kg