Jvc-RXDP-20-VBK-Service-Manual电路原理图.pdf
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1、SERVICE MANUALCOPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LIMITEDNo.220082003/7AUDIO/VIDEO CONTROL RECEIVERRX-DP20VBKTABLE OF CONTENTS1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42 SPECIFI
2、C SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-63 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74 ADJUS
3、TMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-185 TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4、1-21AUD O/V DEO CONTROL RECE VERRX DP20VSTANDBY/ONSTANDBYPHONESD MMERCC CONVERTERZONE 1ON/OFFZONE 2ON/OFFDOORUPDOORDOWNMASTER VOLUMES-V DEOD G TAL VIDEO LAUDIORVIDEOCHANNELTV VIDEOMUT NGDVDN/ F O /O FST NDB / N ST NDB / NS AND YT BS OND MU CDC RHO OPE MXT 7 CAN LOG D G T LCC CO VER ERFFECTL V NESSSO
5、UNDESTTHXX ES 7 1 AN LOG DI ECTSLEEP DIMMERM MODEDSP URR DSPS RROUNDRE URN 0 +O FNPUSETTUM NA JUENUDVDME U E ITT XTI P A1234567/ 8910 100TV VOL VOLUMETUN NGSTOP PAU EFF REWRECPLAYDOWN UPRM SR DP20J RE OTE CO TROLA V CONTROL RECE VERCR 1 CR 2FM AMID OV DBZO E 2TR NSM TEA NONE 1Z NE 1 ZONE 2 L ARNZO E
6、 1TVCA VBSArea SuffixJ - U.S.A.C - Canada1-2 (No.22008)SPECIFICATIONAmplifier Output Power At Stereo operation (Analog Direct On)Front channels120 W per channel, min. RMS, driven into 8 , 20 Hz to 20 kHz with no more than 0.02% total harmonic distortion. 120 W per channel, min. RMS, driven into 4 ,
7、20 Hz to 20 kHz with no more than 0.07% total harmonic distortion.At Surround operation(Analog Direct On)Front channels120 W per channel, min. RMS, driven into 8 , 20 Hz to 20 kHz with no morethan 0.02% total harmonic distortion. Center channel120 W, min. RMS, driven into 8 , 20 Hz to 20 kHz with no
8、 more than 0.02%total harmonic distortion.Surround channels120 W per channel, min. RMS, driven into 8 , 20 Hz to 20 kHz with no morethan 0.02% total harmonic distortion.Surround back channels120 W per channel, min. RMS, driven into 8 , 20 Hz to 20 kHz with no morethan 0.02% total harmonic distortion
9、.Audio Audio Input Sensitivity/Impedance(1 kHz)PHONO IN (MC) 0.25 mV/100 (MM) 2.5 mV/47 kCD IN, CDR IN, TAPE/MD IN, EXT 7.1CH IN 200 mV/47 kDVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO 200 mV/47 kAudio Input(DIGITAL IN)*Coaxial 1(DVD), 2(CD), 3(TV/DBS) 0.5 V(p-p)/75 Optical 4(CDR), 5(MD), 6(VC
10、R1) -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)Audio Output Level ZONE 2 PREOUT 200 mVPREOUT 1 VRecording OutputLevelTAPE/MD OUT, CDR OUT, VCR 1 OUT, VCR 2 OUT200 mVDigital output Optical
11、DIGITAL OUTSignal wave length 660 nmOutput levelSignal-to-Noise Ratio (66 IHF/78 IHF)(Analog Direct On)PHONO IN (MC) 60 dB/72 dB (at REC OUT)(MM) 72 dB/80 dB (at REC OUT)CD IN, CDR IN, TAPE/MD IN, EXT 7.1CH IN 92 dB/80 dBDVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO 92 dB/80 dBFrequency Respons
12、e (8 )PHONO IN (MC) 20 Hz to 20 kHz (1 dB)(MM) 20 Hz to 20 kHz (1 dB)CD IN, CDR IN, TAPE/MD IN, EXT 7.1CH IN 10 Hz to 100 kHz (+1 dB, -3 dB)DVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO 10 Hz to 100 kHz (+1 dB, -3 dB)RIAA Phono Equalization 1.0 dB (20 Hz to 20 kHz)Video Video Input Sensitivity/
13、ImpedanceComposite videoDVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO1 V(p-p)/75 S-videoDVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO(Y: luminance) 1 V(p-p)/75(C: chrominance, burst) 0.286 V(p-p)/75 Component1 IN (DVD), 2 IN,3 IN(Y: luminance) 1 V(p-p)/75 (PB, PR) 0.7 V(p-p)/75 Video Outpu
14、t LevelComposite videoVCR 1 OUT,VCR 2 OUT,MONITOR OUT1 V(p-p)/75 S-videoVCR 1 OUT, VCR 2 OUT, MON-ITOR OUT(Y: luminance) 1 V(p-p)/75(C: chrominance, burst) 0.286 V(p-p)/75 ComponentMONITOR OUT(Y: luminance) 1 V(p-p)/75 (PB, PR): 0.7 V(p-p)/75 Synchronization NegativeSignal-to-Noise Ratio 45 dB(No.22
15、008)1-3Designs & specifications are subject to change without notice.FM tuner (IHF)Tuning Range 87.5 MHz to 108.0 MHzUsable Sensitivity Monaural 12.8 dBf (1.2 V/75 )50 dB Quieting Sensitivity Monaural 18.2 dBf (2.2 V/75 )Stereo 38.2 dBf (22.3 V/75 )Signal-to-Noise Ratio (IHF-A weighted) Monaural 78
16、dB at 85 dBfStereo 73 dB at 85 dBfTotal Harmonic Distortion Monaural 0.2% at 1 kHzStereo 0.3% at 1 kHzStereo Separation at REC OUT 40 dB at 1 kHzAlternate Channel Selectivity 60 dB (400 kHz)Frequency Response 30 Hz to 15 kHz (+0.5 dB, -3 dB)AM tuner Tuning Range 530 kHz to 1 710 kHzUsable Sensitivit
17、y Loop antenna: 400 V/mSignal-to-Noise Ratio 50 dB (100 mV/m)General Power Requirements AC 120V, 60 HzPower Consumption 580 W/690 VA (at operation)2.7 watts (in standby mode)Dimensions (W H D) 445 mm 177 mm 475 mm(17 9/16 in. 7 in. 18 3/4 in.)Mass 23.5 kg (52 lbs)1-4 (No.22008)SECTION 1PRECAUTION1.1
18、 Safety Precautions(1) This design of this product contains special hardware andmany circuits and components specially for safety purpos-es. For continued protection, no changes should be madeto the original design unless authorized in writing by themanufacturer. Replacement parts must be identical
19、tothose used in the original circuits. Services should be per-formed by qualified personnel only.(2) Alterations of the design or circuitry of the product shouldnot be made. Any design alterations of the product shouldnot be made. Any design alterations or additions will voidthe manufacturers warran
20、ty and will further relieve themanufacture of responsibility for personal injury or propertydamage resulting therefrom.(3) Many electrical and mechanical parts in the products havespecial safety-related characteristics. These characteris-tics are often not evident from visual inspection nor can thep
21、rotection afforded by them necessarily be obtained by us-ing replacement components rated for higher voltage, watt-age, etc. Replacement parts which have these specialsafety characteristics are identified in the Parts List of Ser-vice Manual. Electrical components having such featuresare identified
22、by shading on the schematics and by ( ) onthe Parts List in the Service Manual. The use of a substitutereplacement which does not have the same safety charac-teristics as the recommended replacement parts shown inthe Parts List of Service Manual may create shock, fire, orother hazards.(4) The leads
23、in the products are routed and dressed with ties,clamps, tubings, barriers and the like to be separated fromlive parts, high temperature parts, moving parts and/orsharp edges for the prevention of electric shock and firehazard. When service is required, the original lead routingand dress should be o
24、bserved, and it should be confirmedthat they have been returned to normal, after reassem-bling.(5) Leakage shock hazard testingAfter 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
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