JVC-RXD212B-avr-sch维修电路原理图.pdf

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1、SERVICE MANUAL COPYRIGHT 2006 Victor Company of Japan, Limited No.MB525 2006/5 AUDIO/VIDEO CONTROL RECEIVER MB52520065 RX-D211SJ,RX-D212BJ, RX-D212BC Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . .

2、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 3DISASSEMBLY . . . . . . . . . . . . . .

3、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14 5TROUBLESHOOTING . . .

4、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15 RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB525) SPECIFICATION * Corresponding to Linear PCM, Dolby Digital, and DTS (with sampling frequency -32 kHz, 44.1 kHz, 48 kHz). Designs an

5、d specifications are subject to change without notice. Amplifier Output Power At stereo operationFront channels110 W per channel, min. RMS, driven into 6 at 20 Hz to 20 kHz with no more than 0.8% total har- monic distortion. At surround operationFront channels110 W per channel, min. RMS, driven into

6、 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 distortion. Surround channels110 W per channel, min. RMS, driven into 6 at 1 kHz, with no more than 0.8% total harmonic dis- tortion. Surround

7、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/DVD, VCR, DBS, TV300 mV/47 k Audio Input (DIGITAL IN)*Coaxial: DIGITAL IN 1(DVR/DVD)0.5 V(p-p)/75 Optical: DIGITAL IN 2(DBS), 3(VCR)-21 dBm

8、 to -15 dBm (660 nm 30 nm) USBUSB DIGITAL Audio Output LevelDVR, VCR300 mV Signal-to-Noise Ratio (66 IHF/78 IHF)80 dB/70 dB Frequency 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 d

9、B VideoVideo Input Sensitivity/Impedance Composite video: DVR/DVD, VCR, DBS1 V(p-p)/75 S-video: DVR/DVD, VCR, DBSY (luminance) : 1 V(p-p)/75 C (chrominance, burst) : 0.286 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

10、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) : 0.286 V(p-p)/75 Component: MONITOR OUTY (luminance) : 1 V(p-p)/75 PB, PR : 0.7 V(p-p)/75 SynchronizationNegative FM tuner (IHF) Tuning Range87.5 MHz to 108.0 MHz Usable Sensiti

11、vityMonaural12.8 dBf (1.2 V/75 ) 50 dB Quieting SensitivityMonaural16.0 dBf (1.7 V/75 ) Stereo37.5 dBf (20.5 V/75 ) Stereo Separation at REC OUT35 dB at 1 kHz AM tuner Tuning Range530 kHz to 1 710 kHz General Power RequirementsAC 120 V , 60 Hz Power Consumption150 W/200 VA (at operation) 0.9 W (in s

12、tandby mode) Dimensions (W H D)435 mm 91.5 mm 360 mm (17 3/16 inches 3 5/8 inches 14 3/16 inches) Mass6.7 kg (14.8 lbs) RadioFans.CN 收音机爱 好者资料库 (No.MB525)1-3 SECTION 1 PRECAUTION 1.1Safety Precautions (1) This design of this product contains special hardware and many circuits and components speciall

13、y 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 personnel only. (2) Alteration

14、s 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 or property damage resulti

15、ng 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 components rated for higher

16、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 Service Manual. The use of a sub

17、stitute 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, barriers and the like to

18、 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 returned to normal, after reas

19、sem- 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 is safe to operate without

20、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 metal part having a return pat

21、h 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 a 1,500 10W resistor para

22、lleled 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 path to the chassis, and m

23、easure 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 to meet international safet

24、y 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 parts. (5) If mains voltage se

25、lector 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 component parts appearing o

26、n the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the mark nearby are critical for safety. When replacing them, be sure to use the parts of the same type and rating as specified

27、 by the manufacturer. (This regulation dose not Except the J and C version) Good earth ground Place this probe on each exposed metal part. AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15 F AC TYPE 1-4 (No.MB525) 1.5Importance admistering point on the safety FC103 CN120 C1001

28、 R1002 RY101 B152 C1003 FC113 R1001 EP151 B142 D103 C101 D107 Q101 R106 R104 B102 R105 R101 D108 D104 D101 C104 R102 D102 R103 FW121 L101 CN202 B104 C1004 CN121 FC114FC104 C1002 B143 B144 EP152 B101 B181 C1005 C102 B103 B151 B141 T102 B145 R187 D120 R152 FC101 D119 C113 R153 R188 R166 D115 TH274 R19

29、0 C156 R165 CN102 Q103 TH101 R189 C114 FC111 CN122 R167 R107 C159 D112 C169 IC151 D114 D162 C166 C112 D161 D109 C111 R158 C110 EP102 IC152 R151 C108 IC153 IC154 C109 C151 Q102 C154 C165 FC112 D113 D111 CN106 FC102 R108 C152 D110 Q171 FW104 B2661 FW116 FW117 HS171 HS153 HS154 HS151 HS152 B2673 B2699

30、B2698 B2697 B2696 B2671 B2701 B2711 B2692 B2691 B2664 B2663 B2681 B2685 B2694 B2721 B2682 B2683 B2684 B2662 B2693 B2672 B2702 B2665 B2674 B2700 B2666 W101 W102 Graphic symbol mark (This symbol means fast blow type fuse.) FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE AND

31、RATING OF FUSES ; should be read as follows ; F101 : 2A 125V F102 : 2A 125V F103 : 6.3A 125V F101 : 2A 125V F102 : 2A 125V F103 : 6.3A 125V Full Fuse Replacement Marking FUSE CAUTION Le symbole graphique (Ce symbole signifie fusible de type a fusion rapide.) POUR UNE PROTECTION CONTINUE CONTRE DES R

32、ISQUES DINCENDIE, REMPLACER SEULEMENT PAR UN FUSIBLE DU MEME TYPE ; Marquage Pour Le Remplacement Complet De Fusible PRECAUTIONS SUR LES FUSIBLES doit etre interprete comme suit ; (No.MB525)1-5 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTION

33、S. 1-6 (No.MB525) SECTION 3 DISASSEMBLY 3.1Main body section 3.1.1Removing the top cover (See Figs.1 and 2) (1) From the both sides of the main body, remove the four screws A attaching the top cover. (See Fig.1) (2) From the back side of the main body, remove the six screws B attaching the top cover

34、. (See Fig.2) (3) Remove the top cover in the direction of the arrow. (See Fig.1) Fig.1 3.1.2Removing the tuner (See Fig.3) Remove the top cover. (1) From the top side of the main body, disconnect the card wire from the connector CN1 on the tuner. (2) From the back side of the main body, remove the

35、two screws C attaching the tuner to the rear panel and then take out the tuner. 3.1.3Removing the XM board (See Fig.3) Remove the top cover. Reference: Remove the tie band bundling the wires. (1) From the back side of the main body, remove the two screws D from the rear panel. (2) From the top side

36、of the main body, disconnect the wire from the connector CN662 on the DSP board. (3) Disconnect the card wire from the connector CN538 on the XM board. (4) Take out the XM board from the main body. Fig.3 A Top cover DC TunerDSP boardXM board CN1CN662CN538 Rear panel (No.MB525)1-7 3.1.4Removing the f

37、an motor (See Fig.4) Remove the top cover. Reference: Remove the tie band bundling the wires. (1) From the top side of the main body, disconnect the wire from the connector CN103 on the main amplifier board. (2) Remove the three screws E and take out the fan motor as- sembly. (3) Remove the two scre

38、ws F attaching the fan motor to the fan bracket. 3.1.5Removing the AV compulink board (See Fig.4) Remove the top cover. (1) From the top side of the main body, disconnect the wire from the connector CN531 on the AV compulink board. (2) From the back side of the main body, remove the screw G and take

39、 out the AV compulink board. Fig.4 3.1.6Removing the rear panel (See Fig.5) Remove the top cover, tuner, XM board and AV compulink board. (1) From the back side of the main body, remove the strain re- lief from the rear panel in the direction of the arrow and re- move the power cord. (2) Remove the

40、twenty two screws H attaching the rear panel. (3) Take out the rear panel from the main body. Fig.5 Fan motor FF G Rear panel CN531 AV compulink board Fan motor CN103 Main amplifier boardFan bracket E Strain relief H Rear panel Power cord HH 1-8 (No.MB525) 3.1.7Removing the DSP board (See Fig.6) Rem

41、ove the top cover, tuner, XM board, AV compulink board and rear panel. (1) From the top side of the main body, remove the screw J at- taching the DSP board. (2) Disconnect the connectors (CN661, CN683) on the DSP board from the volume board. Note: When removing the DSP board, take care not to break

42、the claw of the connector on it. (3) Take out the DSP board and disconnect the wires from the connector CN681 on the forward side of the DSP board. (4) Take out the DSP board from the main body. 3.1.8Removing the video board (See Fig.6) Remove the top cover, tuner, XM board, AV compulink board and r

43、ear panel. (1) From the top side of the main body, disconnect the wire from the connector CN533 on the video board. (2) Disconnect the connector CN525 on the video board from the connect board. (3) Take out the video board from the main body. Fig.6 3.1.9Removing the speaker terminal 1 and 2 board (S

44、ee Fig.7) Remove the top cover, tuner, XM board, AV compulink board and rear panel. (1) From the top side of the main body, disconnect the wires from the connectors (CN261, CN461) on the speaker ter- minal 1 board. (2) Disconnect the wires from the connectors (CN205, CN262, CN263) on the speaker ter

45、minal 2 board. (3) Take out the speaker terminal 1 and 2 board from the main body. Fig.7 3.1.10 Removing the power transformer (See Fig.8) Remove the top cover. Reference: Remove the tie bands bundling the wires. (1) From the top side of the main body, disconnect the wires from the connector CN121 o

46、n the primary board. (2) Disconnect the wires from the connector CN106 on the regulator board. (3) Disconnect the wires from the connector CN111 on the main amplifier board. (4) Remove the four screws K and take out the power trans- former from the main body. Fig.8 CN533 CN525 Video board CN681 DSP

47、board Volume board Connect board CN661 CN683 J CN263 CN261 CN461 CN205 CN262 Speaker terminal 2 boardSpeaker terminal 1 board CN111 CN106 Power transformer Primary board Regulator boardMain amplifier board K CN121 (No.MB525)1-9 3.1.11 Removing the primary board (See Fig.9) Remove the top cover. Refe

48、rence: Remove the tie band bundling the wires. (1) From the top side of the main board, remove the wires from the connectors (CN120, CN121) on the primary board. (2) Disconnect the wires from the connector CN102 on the regulator board. (3) Remove the two screws M attaching the primary board. (4) Tak

49、e out the primary board from the main body. 3.1.12 Removing the regulator board (See Fig.9) Remove the top cover and video board. Reference: Remove the tie band bundling the wires. (1) From the top side of the main board, remove the wires from the connectors (CN106, CN102, CN122) on the regulator board. (2) Disconnect the wires from the connectors (CN506, CN507) on the input board. (3) Disconnect the wire from the connector CN105 on the main amplifier board. (4) Remove the four screws N attaching the regulator board. (5) Take out the