Harman kardon hk 670 service manual
This is the 25 pages manual for harman kardon hk 670 service manual.
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INTRODUCTION 3 Introduction Congratulations on your choice of the Harman Kardon HK670 Integrated Amplifier. In order to obtain the best performance from this integrated amplifier, please be sure to read this owner's manual and use your integrated amplifier only in accordance with its instructions. The special features of this unit include: HCC (High Instantaneous Current Capability) The amplifier sections react rapidly to musical transients, providing the instantaneous current necessary to precisely drive and control nearly any loudspeaker system. Ultrawide Bandwidth The bandwidth of this unit is exceptionally wide and is independent of negative feedback. This improves transient accuracy and phase linearity. Low Negative Feedback This unit has been designed to have low distor- tion and wide bandwidth without high negative feedback. This further improves its dynamic accuracy. Discrete Component Circuitry In order to achieve the above goals, all discrete electronic circuitry has been employed. No avail- able integrated circuits could provide this high level of performance. Sophisticated Electronic Protection Circuitry Harman Kardon's unique protection circuitry guards the amplifier from short circuit or dam- aged speakers and wires, without impairing sound quality by the use of current limiting or output relays. General instructions Always Use at 230V AC This unit is designed for operation with 230V AC. Use only domestic AC outlets. Connecting the unit to an outlet supplying a higher voltage may create a fire hazard. Handle the Power Cord Gently Do not disconnect the plug from the AC outlet by pulling the cord; always pull the plug itself. Pulling the cord may damage it. If you do not intend to use your unit for any considerable length of time, turn the unit off completely by pressing the round Power button above Power (see page 5). Do not place furniture or other heavy objects on the cord, and try to avoid drop- ping heavy objects on it. Also do not tie a knot in the power cord. Not only may the cord be damaged, it can also cause a short circuit with a consequent fire hazard. Place of installation Place the unit on a firm and level surface. Avoid installing your unit under the following condi- tions: Moist or humid places. Places exposed to direct sunlight or close to heating equipment. Extremely cold locations. Places subject to excessive vibration or dust. Poorly ventilated places. Do not obstruct the ventilation slots on the top surface of the unit by placing objects on them. Otherwise, the temperature inside the unit may rise, possibly affecting its long-term reliability.Moving the Unit Before moving the unit, be sure to pull out the power cord from the AC outlet and disconnect the interconnection cords with other units. Do Not Open the Cabinet To prevent shock hazard, do not tamper with internal components for inspection or mainte- nance. Harman Kardon does not guarantee against performance degradation resulting from any modification. If water, a hairpin or wire acci- dentally enters the unit, immediately pull the plug from the AC outlet to prevent shock and consult an authorized Harman Kardon service station. If you use the unit under this condition, it may cause a fire shock hazard. Cleaning If the unit gets dirty, wipe it with a soft dry cloth. If necessary, wipe it with a soft cloth dampened with mild soapy water and then with a dry cloth. Never use benzene, thinner, alcohol or other volatile agents, and avoid spraying an insecticide near the unit. Warning Signs If you detect an abnormal smell or smoke, imme- diately turn the amplifier off and unplug the power cord. Contact your dealer or nearest Harman Kardon service center. Packaging Save all packing material. It is essential for ship- ping, should you move, or in the event the unit ever needs repair.
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4CONNECTIONS Connections Connecting Other Components 1. Make sure your amplifier and other compo- nents are turned off. 2. Connect each component's Output/Play jacks to the corresponding Input jacks on the back of your amplifier and, if available, the compo- nents Input/Record jacks to the Output jacks of the HK670. Use the white, black or gray plugs to connect Left channel jacks; use the red plugs for Right channel jacks. 3. A record player with MM cartridge must be connected to the Phono Input jacks and a separate ground wire to the ground terminal screw above. Wired Remote Control To control your amplifier with an external infrared remote sensor, connect the wire from the remote sensor to the REMOTE IN jack on the back panel. Or, if another stereo component has a built-in infrared remote sensor and a Remote Output jack, it may be possible to connect this jack to the REMOTE IN jack of your amplifier. All Harman Kardon products with »Remote In« and »Remote Out« jacks are compatible with one another, except for the Citation 22, 24 and 25. Other manufacturers' remote sensors and com- ponents may not be compatible, but it will not hurt to experiment. A second wire may be used to connect your amplifier's REMOTE OUT jack to the Remote Input of another stereo component.Continue this process to include additional com- ponents (if compatible). Connecting Speakers 1. For best performance, use high quality speak- er cables. However, ordinary copper wire can be used if the gauge meets the following requirements: Wire Min. Length Diameter Up to 2.5 meter 1 mm Up to 4 meter 1.25 mm Up to 6 meter 1.6 mm Above 6 meter 2-2.5 mm 2. Avoid rolling excess wire with or near signal interconnects.IMPORTANT:When connecting two pairs of speakers, determine the impedance of each pair by looking on the back of the speakers, in your owner's manual, or by contacting your dealer or manufacturer. You can listen to two pairs of speakers at the same time ONLY if the impedance of EACH speaker is NOT LESS THAN 8 Ohms. WARNING:Do not play sets of speakers simul- taneously except as recommended above. Ampli- fier may overheat. Digital Loop-Through Digital inputs and outputs are provided only as a convenience for connecting various digital com- ponents to the CD, CDR and AUX digital inputs. The corresponding digital input signal is fed to the DIGITAL OUT connector when CD, CDR or AUX is selected as input source, to provide a digital signal for CD or MD Recorders. The HK670 cannot process, decode or convert any digital signal. AC Power Plug the cord into a 230 VAC wall socket. Record Player Cassette Tape Deck Speaker System 1 Left channel Compact Disc Player CD Recorder Speaker System 1 Right channel Video Player 2 Right channel Speaker System 2 Left channel Speaker System 2 Video Player 1 Tuner