Jvc KSFX 945 R Service Manual

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1-2 (No.49875) SPECIFICATION Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTIONMaximum Power OutputFront 50 W per channel Rear 50 W per channel Continuous Power Output (RMS)Front 19 W per channel into 4 -„¦ 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion. Rear 19 W per channel into 4 -„¦ 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion. Load Impedance 4 -„¦ (4 -„¦ to 8 -„¦ allowance) Tone Control Range Bass ±10 dB at 100 Hz Treble ±10 dB at 10 kHz Frequency Response 40 Hz to 20 000 Hz Signal-to-Noise Ratio 70 dB Line-Out Level/Impedance 2.0 V/20 k-„¦ load (250 nWb/m) Output Impedance 1 k-„¦ TUNER SECTION Frequency Range FM1/FM2 87.5 MHz to 108.0 MHz FM3 65.00 MHz to 74.00 MHz AM (MW) 522 kHz to 1 620 kHz (LW) 144 kHz to 279 kHz [FM Tuner] Usable Sensitivity 11.3 dBf (1.0 -„¦V/75 -„¦) 50 dB Quieting Sensitivity 16.3 dBf (1.8 -„¦V/75 -„¦) Alternate Channel Selectivity (400 kHz) 65 dB Frequency Response 40 Hz to 15 000 Hz Stereo Separation 30 dB Capture Ratio 1.5 dB [MW Tuner] Sensitivity 20 µV Selectivity 35 dB [LW Tuner] Sensitivity 50 µV CASSETTE DECK SECTIONWow & Flutter 0.11% (WRMS) Fast-Wind Time 100 sec. (C-60) Frequency Response (Dolby B NR OFF) 30 Hz to 16 000 Hz (Normal tape) Signal-to-Noise Ratio 56 dB (Normal tape) (Dolby B NR ON) 65 dB (Dolby B NR OFF) 56 dB Stereo Separation 40 dB GENERAL Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance) Grounding System Negative ground Allowable Operating Temperature 0ºC to +40ºC Dimensions (W ×H × D)Installation Size (approx.) 182 mm × 52 mm × 150 mm Panel Size (approx.) 188 mm × 58 mm × 12 mm Mass (approx.) 1.5 kg (excluding accessories)

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(No.49875)1-3 SECTION 1 PRECAUTION 1.1 Safety Precautions ! Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system.