Technics-ST-8055-K-Service-Manual电路原理图.pdf

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1、 0 ORDER NO. 7908-1608 Manual Quartz Synthesizer FM/AM Stereo Tuner ST-8055 (EG), (XA), (XE), (XGF) ST-8055K (E), (EG), (XA), (XGH) ST-8055K The models ST-8055 (E, EG) and (E, EG) are available in Scandinavia and European only. The models ST-8055 (XA) and ST-8055K (XA) are available in Asia, Latin A

2、merica, Middle East and Africa only. * The model ST-8055 (XE) is available in United Kingdom only. * The model ST-8055 (EB) is available in Belgium only. The models ST-8055 (XGH) and ST-8055K (XGH) are available in Holland only. * The model ST-8055 (XGF) is available in France only. TECHNICAL SPECIF

3、ICATIONS DIN 45 500 are subject to change without notice for further improvement. TUNER SECTION Frequency range* Antenna terminals Sensitivity S/N 30 dB S/N 26 dB S/N 20 dB 46 dB stereo quieting sensitivity 87.50 108.00 MHz (balanced), (unbalanced) (IHF, usable) 1.2 Total harmonic distortion S/N MON

4、O STEREO MONO STEREO 69 dB (IHF: 65 dB (IHF: 20 Hz kHz, +0.5 dB Frequency response Alternate channel selectivity (+400 kHz) Capture ratio Image at 98 MHz rejection at 98 MHz Spurious response rejection at 98 MHz AM suppression Stereo separation Carrier leak Limiting point Power bandwidth 1 kHz 19 kH

5、z 38 kHz IF amplifier FM demodulator Channel balance (250 Hz 6300 Hz) 0.3% 75 dB) 70 dB) 1.5 dB 75 dB 1.0 dB 65 dB 100 dB 90 dB 55 dB dB, 10kHz 35dB -37 dB) dB) 180 kHz dB 531 kHz 30 V/m dB 45dB dB AM TUNER SECTION Frequency range* Sensitivity (S/N 20 dB) Selectivity (9 kHz) Image rejection at 1000

6、kHz rejection at 1000 kHz GENERAL Output voltage 0.3V (0.6V, F Power consumption 1 2W Batteries for memory back-up (optional) three A A size batteries DC 4.5V Power supply (50 Hz/60Hz) 20V/220V/240V Dimensions 430 x 53 x 240 mm x 2-3/32 x 9-7/16) Weight 2.8 kg (6.2 lb.) For some countries, this unit

7、 is equipped with an selector. The specifications shown above are correct with this switch set to the FM 50 kHz/AM 9 kHz position. If it is set to the FM 200 kHz/AM 10kHz position, however, the FM frequency range becomes 88.1 MHz, and the AM frequency range becomes 530 kHz. Technics Matsushita Electric Trading Ltd. Box 288. Central Japan