JVC-RXD301S-avr-sch维修电路原理图.pdf
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1、SERVICE MANUAL COPYRIGHT 2005 Victor Company of Japan, Limited No.MB479 2005/10 AUDIO/VIDEO CONTROL RECEIVER MB479200510 RX-D301S, RX-D302B Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS 1PRECAUTIONS . . . . . . . . . . . . . . . . . . . .
2、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . .
3、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20 5TROUBLESHOOTING . . . . . . . . .
4、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21 Area suffix RX-D301S Area suffix RX-D302B B - U.K. E - Continental Europe EN - Northern Europe A - Australia B - U.K. E - Continental Europe EN - Northern Europe RadioFans.CN 收音机爱 好者
5、资料库 1-2 (No.MB479) SPECIFICATION *2: Corresponding to Linear PCM, Dolby Digital, and DTS (with sampling frequency -32 kHz, 44.1 kHz, 48 kHz). Designs and specifications are subject to change without notice. Amplifier Output Power At stereo operationFront channels110 W per channel, min. RMS, driven i
6、nto 6 at 1 kHz with no more than 0.8% total harmonic dis- tortion. At surround operationFront channels110 W per channel, min. RMS, driven into 6 at 1 kHz with no more than 0.8% total harmonic dis- tortion. Center channel110 W, min. RMS, driven into 6 at 1 kHz, with no more than 0.8% total harmonic d
7、istortion. Surround channels110 W per channel, min. RMS, driven into 6 at 1 kHz with no more than 0.8% total harmonic dis- tortion. Surround back channels110 W per channel, min. RMS, driven into 6 at 1 kHz with no more than 0.8% total harmonic dis- tortion. AudioAudio Input Sensitivity/Impedance DVR
8、/DVD (DVD MULTI), VCR, DBS, TV270 mV/47 k Audio Input (DIGITAL IN)*1Coaxial: DIGITAL IN 1(DVR/DVD)0.5 V(p-p)/75 Optical: DIGITAL IN 2(DBS), 3(VCR)-21 dBm to -15 dBm (660 nm 30 nm) USB: USB WIRELESSUSB TERMINAL Audio Output LevelDVR, VCR270 mV Signal-to-Noise Ratio (66 IHF/78 IHF)80 dB/62 dB Frequenc
9、y Response (6 )20 Hz to 20 kHz (1 dB) Bass Boost+4 dB 1 dB at 100 Hz Equalization (at DSP operation)Center frequency63 Hz, 250 Hz, 1 kHz, 4 kHz, 16 kHz Control range8 dB VideoVideo Input Sensitivity/Impedance Composite video: DVR/DVD, VCR, DBS1 V(p-p)/75 S-video: DVR/DVD, VCR, DBSY (luminance): 1 V(
10、p-p)/75 C (chrominance, burst): 0.3 V(p-p)/75 Component: DVR/DVD, VCR (DBS)Y (luminance): 1 V(p-p)/75 PB, PR: 0.7 V(p-p)/75 Video Output Level/ImpedanceComposite video: DVR, VCR, MONITOR OUT 1 V(p-p)/75 S-video: DVR, VCR, MONITOR OUTY (luminance): 1 V(p-p)/75 C (chrominance, burst): 0.3 V(p-p)/75 Co
11、mponent: MONITOR OUTY (luminance): 1 V(p-p)/75 PB, PR: 0.7 V(p-p)/75 SynchronizationNegative FM tuner (IHF) Tuning Range87.50 MHz to 108.00 MHz Usable SensitivityMonaural12.8 dBf (1.2 V/75 ) for A version 17.0 dBf (1.9 V/75 ) for Europe version 50 dB Quieting SensitivityMonaural16.0 dBf (1.7 V/75 )
12、for A version 21.3 dBf (3.2 V/75 ) for Europe version Stereo37.5 dBf (20.5 V/75 ) for A version 41.3 dBf (31.8 V/75 ) for Europe version Stereo Separation at REC OUT35 dB at 1 kHz AM tuner Tuning Range531 kHz to 1 710 kHz (at 9 kHz intervals) 522 kHz to 1 629 kHz (at 10 kHz intervals) General Power
13、RequirementsAC 240 V ,50 Hz for A version AC 230 V , 50 Hz for Europe version Power Consumption180 W (at operation) 5.8 W (in standby mode) for A version 0.9 W (in standby mode) for Europe version Dimensions (W H D)435 mm 91.5 mm 371 mm Mass6.8 kg USB WIRELESS SYSTEMThe USB wireless transmitter supp
14、lied with this re- ceiver supports Direct Sequence Spreading Spec- trum (DSSS) using 2.4 GHz frequency band. RadioFans.CN 收音机爱 好者资料库 (No.MB479)1-3 SECTION 1 PRECAUTIONS 1.1Safety Precautions (1) This design of this product contains special hardware and many circuits and components specially for safe
15、ty purpos- es. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be per- formed by qualified personnel only. (2) Alterations of the d
16、esign or circuitry of the product should not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefr
17、om. (3) Many electrical and mechanical parts in the products have special safety-related characteristics. These characteris- tics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by us- ing replacement components rated for higher voltage, w
18、att- age, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Ser- vice Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute re
19、placement which does not have the same safety charac- teristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards. (4) The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separa
20、ted from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after reassem- bling
21、. (5) Leakage shock hazard testing After reassembling the product, always perform an isola- tion check on the exposed metal parts of the product (an- tenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of
22、electrical shock.Do not use a line isolation transformer during this check. Plug the AC line cord directly into the AC outlet. Using a Leakage Current Tester, measure the leakage current from each exposed metal parts of the cabinet, particular- ly any exposed metal part having a return path to the c
23、hassis, to a known good earth ground. Any leakage cur- rent must not exceed 0.5mA AC (r.m.s.). Alternate check method Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by
24、a 0.15F AC-type capacitor between an ex- posed metal part and a known good earth ground. Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the
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