Harman Kardon HK670 Service – Technical Manual

Also see for HK 670: Owner's manual Specification Owner's manual Technical manual

Contents

8 TROUBLESHOOTING/SPECIFICATIONSTroubleshootingThis 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 apossible solution. If the problem persists, consult your authorized Harman Kardon service center.If the problem is... Make sure that...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.SpecificationsNOMINALContinuous Average Power Per Channel (FTC) 8 Ohms: 80 Watts@<0.09%THD20 Hz – 20 kHz, both channels driven 4 Ohms: 120 Watts@<0.3%THDDynamic Power (IHF, 1 kHz Tone Burst) 8 Ohms: 115 Watts4 Ohms: 200 Watts2 Ohms: 310 WattsHigh instantaneous current capability (HCC) ±75 AmpsPower Bandwidth @ Half-Rated output, 8Ω <10 Hz - 150 kHzFrequency response @ 1W (+0/-3dB) 5 Hz - 150 kHzDamping factor (20Hz-20k Hz) >125Signal-to-noise Ratio (Reference rated power output, A-WTD) Tuner/CD 95 dBPhono (MM): 75 dBInput sensitivity/Impedance Tuner/CD 270mV/43k OhmsPhono (MM): 4.0mV/47k OhmsOverload: Tuner/CD 6VPhono (MM): 110 mVTone control range, Bass @ 50 Hz/Treble @ 10 kHz ±10 dB/±10 dBPower supply: AC 230V, 50/60 HzPower consumption: 345 WDimensions (Width X Height X Depth): 439 X 110 X 395 mmWeight: 10.35 kg