Jvc KDG 420 Service Manual
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Extracted text from Jvc KDG 420 Service Manual (Ocr-read)
Page 1
1-2 (No.MA232) SPECIFICATION - Microsoft and Windows Media are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. -Design and specifications are subject to change without notice.AUDIO AMPLIFIER SECTION Power Output KD-AR470, KD-G420 20 W RMS × 4 Channels at 4 Ω and [< or =] 1% THD+N Maximum Power Output KD-G521, KD-G524, KD-G525, KD-G527Front 50 W per channel Rear 50 W per channel Continuous Power Output (RMS)KD-G521, KD-G524, KD-G525, KD-G527Front 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion. Rear 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion. Signal to Noise Ratio KD-AR470, KD-G420 80 dBA (reference: 1 W into 4 Ω) KD-G521, KD-G524, KD-G525, KD-G527 70 dB Load Impedance 4 Ω (4 Ω to 8 Ω allowance) Tone Control Range Bass ±10 dB at 100 Hz Treble ±10 dB at 10 kHz Frequency Response 40 Hz to 20 000 Hz Line-Out Level/Impedance KD-AR470 4.0 V/20 k Ω load (full scale) KD-G420, KD-G521, KD-G524, KD-G525, KD-G5272.5 V/20 k Ω load (full scale) Output Impedance 1 k Ω Other Terminals CD changer, Steering wheel remote input ( Only KD-G521 ), AUX (auxiliary) input jack TUNER SECTION Frequency Range FM ( KD-AR470, KD-G420 ) 87.5 MHz to 107.9 MHz (with channel interval set to 100 kHz or 200 kHz) 87.5 MHz to 108.0 MHz (with channel interval set to 50 kHz) FM ( KD-G521, KD-G524, KD-G525 ) 87.5 MHz to 108.0 MHz FM1/FM2 ( KD-G527 ) 87.5 MHz to 108.0 MHz FM3 ( KD-G527 ) 65.00 MHz to 74.00 MHz AM ( KD-AR470, KD-G420 ) 530 kHz to 1 710 kHz (with channel interval set to 10 kHz) 531 kHz to 1 602 kHz (with channel interval set to 9 kHz) AM ( KD-G521, KD-G527 ) (MW) 522 kHz to 1 620 kHz (LW) 144 kHz to 279 kHz AM ( KD-G524, KD-G525 ) 531 kHz to 1 602 kHz FM Tuner Usable Sensitivity 11.3 dBf (1.0 µV/75 Ω) 50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75 Ω) Alternate Channel Selectivity (400 kHz) 65 dB Frequency Response 40 Hz to 15 000 Hz Stereo Separation 35 dB Capture Ratio 1.5 dB AM Tuner KD-AR470, KD-G420, KD-G524, KD-G525Sensitivity 20 µV Selectivity 35 dB MW Tuner KD-G521, KD-G527 Sensitivity 20 µV Selectivity 35 dB LW Tuner KD-G521, KD-G527 Sensitivity 50 µV CD PLAYER SECTION Type Compact disc player Signal Detection System Non-contact optical pickup (semiconductor laser) Number of Channels 2 channels (stereo) Frequency Response 5 Hz to 20 000 Hz Dynamic Range 96 dB Signal-to-Noise Ratio 98 dB Wow and Flutter Less than measurable limit MP3 Decoding Format MPEG1/2 Audio Layer 3 Max. Bit Rate: 320 kbps WMA (Windows Media® Audio) Decoding Format Max. Bit Rate: 192 kbps GENERAL Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance) Grounding System Negative ground Allowable Operating Temperature 0 °C to +40 °C (32 °F to 104 °F) Dimensions (W × H × D) Installation Size (approx.) 182 mm × 52 mm × 150 mm (7-3/16" × 2-1/16" × 5-15/16") Panel Size (approx.) 188 mm × 58 mm × 11 mm (7-7/16" × 2-5/16" × 7/16") Mass (approx.) 1.5 kg (3.3 lbs) (excluding accessories)
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(No.MA232)1-3 SECTION 1 PRECAUTIONS 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. ! Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check.