JVC-RXDV31SL-avr-sm维修电路原理图.pdf
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1、SERVICE MANUAL COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LIMITED No.22023 2003/6 HOME THEATER DVD-AUDIO/VIDEO RECEIVER 2202320036 RX-DV31SL TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2、 . . . . . . 1-3 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3、. . . . . . . 1-6 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21 5TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4、. . . . . . . . . . . . 1-22 6DESCRIPTION OF MAJOR ICS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23 Area suffix J - U.S.A. C - Canada DVD/SUPER VCD/VCD/CD COMPAC T SUPER VIDEO RX-DV31 HOME THEATER DVD-AUDIO/VIDEO RECEIVER Rad
5、ioFans.CN 收音机爱 好者资料库 1-2 (No.22023) SPECIFICATION AmplifierOutput PowerAt Stereo operationFront channels100 W per channel, min. RMS, driven into 8 , 40 Hz to 20 kHz with no more than 0.8% total harmonic distortion. At Surround operation Front channels100 W per channel, min. RMS, driven into 8 at 1 k
6、Hz, with no more than 0.8% total harmonic distortion. Center channel100 W, min. RMS, driven into 8 at 1 kHz, with no more than 0.8% total harmonic distortion. Surround channels100 W per channel, min. RMS, driven into 8 at 1 kHz, with no more than 0.8% total harmonic distortion. AudioAudio Input Sens
7、itivity/ Impedance (1 kHz) TV, TAPE/CDR, DBS, VCR240 mV/47 k Audio Input (DIGITAL IN)*CoaxialDIGITAL 1 (DBS)0.5 V(p-p)/75 OpticalDIGITAL 2 (TV)-21 dBm to -15 dBm (660 nm 30 nm) * Corresponding to Linear PCM, Dolby Digital, and DTS Digital Surround (with sampling frequency-32 kHz, 44.1 kHz, 48 kHz).
8、Signal-to-Noise Ratio (66 IHF/78 IHF) TV, TAPE/CDR, DBS, VCR87 dB/67 dB Frequency Response (8 )TV, TAPE/CDR, DBS, VCR20 Hz to 20 kHz (1 dB) Tone ControlBass (100 Hz)10 dB 2 dB Treble (10 kHz)10 dB 2 dB VideoVideo Input Sensitivity/ Impedance (1 kHz) Composite video DBS IN, VCR IN1 V(p-p)/75 S-videoD
9、BS IN, VCR IN(Y:luminance)1 V(p-p)/75 (C:chrominance)0.286 V(p-p)/75 Video Output Level/Impedance (1 kHz) Composite video VCR OUT, MONITOR OUT1 V(p-p)/75 S-videoVCR OUT, MONITOR OUT (Y:luminance)1 V(p-p)/75 (C:chrominance)0.286 V(p-p)/75 Component video DVD COMPONENT VIDEO OUT (Component-Y)1.0 V(p-p
10、)/75 (Component-PB/PR) 0.7 V(p-p)/75 Color System NTSC Horizontal Resolution 500 lines Signal-to- Noise Ratio (S/N) 63 dB SynchronizeNegative FM tuner (IHF) Tuning Range87.5 MHz to 108.0 MHz AM tunerTuning Range530 kHz to 1 710 kHz GeneralPower Requirements AC 120 V , 60 Hz Power Consumption 200 W/2
11、55 VA (in operation) 2 W (in standby mode) Dimensions (W H D) 435 mm 100 mm 403.5 mm (17 3/16 in. 3 15/16 in. 15 15/16 in.) Mass8.4 kg (18.5 lbs) RadioFans.CN 收音机爱 好者资料库 (No.22023)1-3 SECTION 1 PRECAUTION 1.1Safety Precautions (1) This design of this product contains special hardware and many circui
12、ts and components specially for safety 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 pers
13、onnel only. (2) Alterations of the design 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
14、or property damage resulting therefrom. (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 co
15、mponents rated for higher voltage, watt- 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 Servic
16、e Manual. The use of a substitute replacement 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
17、, barriers and the like to be separated 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 retu
18、rned to normal, after reassem- bling. (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 i
19、s safe to operate without danger of 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 meta
20、l part having a return path to the chassis, 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
21、 a 1,500 10W resistor paralleled by 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
22、path to the chassis, and measure the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). 1.2Warning (1) This equipment has been designed and manufactured t
23、o meet international safety standards. (2) It is the legal responsibility of the repairer to ensure that these safety standards are maintained. (3) Repairs must be made in accordance with the relevant safety standards. (4) It is essential that safety critical components are replaced by approved part
24、s. (5) If mains voltage selector is provided, check setting for local voltage. 1.3Caution Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of pre- forming repair of this system. 1.4Critical parts for safety In regard with c
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