User manual HARMAN KARDON CITATION XX

[. . . ] Otherwise, the cord may be damaged, causing fire or shock hazard. I f the unit is not used for a prolonged period, disconnect the plug from the outlet. Do not open the cabinet To prevent shock hazard or unexpected trouble, do not tamper with internal components for inspection or main. Harman Kardon does not guarantee performfrom any modification. [. . . ] The green "ultrasonic" indicator illuminates and, at the same tlme, the red indicator will turn off. A two-pole Bessel filter (100 kHz) i s inserted into the Bessel circuit, and the mixed radio signal is removed from the music signal. T h ~ s filter was chosen over other types because its effect on audible frequencies is less likely to be noticed. When amplifier clipping occurs the high frequency distortion may cause the "ultrasonic interference" indicator to illuminate for a short per~od. This is not a fault, but an indication that the input signal should be reduced. Connection diagram Bias selection switches This unit enables bias selection in 3 stages (low, normal and high). The bias settings allow the effective use of the heat stnk thermal capatity by adjusting the idle current to the operating conditions. Generally select the normal bias position. , low position The low bias position reduces the bias but is the optimunl setting for continuous use at high, power levels. The low bias position is also optimal for use at a high room temperature and/or a poor heat radiation environment. Operating procedure Before turning the power on, be sure to check that all connections are correct. Turn the volume control knob o f your preamplifier t o the minimum level. Press the high bias switch when it is desired to expedite warming up of the amplifier. The red "wait" indicator illumtnates. In about 7 seconds, the "wait" indicator goes off, the green "on" and "Citation X X " indicators illuminate and the amplifier is ready for operation. Start the source (tape deck, turntable, etc. ). (iradually increase the preamplifier volunle and sound will be heard from the speakers. If the "lnfrasonic interference" or "ultrasonic interference" indicators tlluminate during operation, press the corresponding filter switch. (See Inltasonic and Ultrasonic filter explanations. ) 8. When turning off the system power at the end of operation, first turn o f f the power of this unit and then turn o f f the power of other system compone]its. [. . . ] Do not place the unit on another component or i n a narrow rack that will obstruct the vertical flow of air required for ade. Select an installation place ensuring sufficient ventilation. Rack mounting according to the EIA specification is ~05sihIr. hiat lv $I#-- l o al<t>pay s t ~ f f i c i ~a~:lrtw l ! [. . . ]