Sony STR-K790 Service Manual - Page 1

Sony STR-K790 - Lifier Manual

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STR-K790 SERVICE MANUAL Ver. 1.1 2007.03 US Model Canadian Model AEP Model UK Model • STR-K790 is the tuner and the amplifier section in HT-DDW790 and HT-DDW795. This receiver incorporates Dolby* Digital and Pro Logic Surround and the DTS** Digital Surround System. * Manufactured under license from Dolby Laboratories. "Dolby", "Pro Logic" and the double-D symbol are trademarks of Dolby Laboratories. ** "DTS" and "DTS Digital Surround" are registered trademarks of DTS, Inc. SPECIFICATIONS AUDIO POWER SPECIFICATIONS POWER OUTPUT AND TOTAL HARMONIC DISTORTION: (Models of area code US only) With 6 ohm loads, both channels driven, from 120 - 20,000 Hz; rated 85 watts per channel minimum RMS power, with no more than 1% total harmonic distortion from 250 milliwatts to rated output. Amplifier section Power Output Stereo mode (rated) (6 ohms 1 kHz, THD 1%) 85 W + 85 W Surround (reference) (6 ohms 1 kHz, THD 10%) RMS output FRONT:133 W per channel CENTER: 133 W SURROUND: 133 W per channel Surround mode2) (reference) (6 ohms 100 Hz, THD 10%) SUB WOOFER: 135 W mode2) 1) 1) Measured under the following conditions: Power requirements 120 V AC, 60 Hz 230 V AC, 50 Hz AM tuner section Tuning range Models of area code US, Canadian With 10-kHz tuning scale: 530 - 1,710 kHz4) With 9-kHz tuning scale: 531 - 1,710 kHz4) Models of area code AEP, UK With 9-kHz tuning scale: 531 - 1,602 kHz Antenna Loop antenna Intermediate frequency 450 kHz 4) Area code US, Canadian AEP, UK 2) Reference power output for front, center, surround speakers and sub woofer. Depending on the sound field settings and the source, there may be no sound output. Inputs Analog Sensitivity: 800 mV/ 50 kohms Digital (Coaxial) Impedance: 75 ohms Tone Gain levels ±6 dB, 1 dB step Reproduction frequency range: 28 - 20,000 Hz FM tuner section Tuning range 87.5 - 108.0 MHz Antenna FM wire antenna Antenna terminals 75 ohms, unbalanced Intermediate frequency 10.7 MHz You can change the AM tuning scale to 9 kHz or 10 kHz. After tuning in any AM station, turn off the receiver. While holding down DIMMER, press ?/1. All preset stations will be erased when you change the tuning scale. To reset the scale to 10 kHz (or 9 kHz), repeat the procedure. General Power requirements Area code US, Canadian AEP, UK Power requirements 120 V AC, 60 Hz 230 V AC, 50/60 Hz - Continued on next page - FM STEREO/FM-AM RECEIVER 9-887-542-02 2007C16-1 © 2007.03 Sony Corporation Home Audio Division Published by Sony Techno Create Corporation




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Sony STR-K790 - Lifier Manual