JVC-RXD202B-avr-sch维修电路原理图.pdf

SERVICE MANUAL COPYRIGHT 2005 Victor Company of Japan, Limited No.MB364 2005/5 AUDIO/VIDEO CONTROL RECEIVER MB36420055 RX-D201S,RX-D202B Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19 Area suffix RX-D201S J - U.S.A. Area suffix RX-D202B J - U.S.A. C - Canada RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB364) SPECIFICATION * 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 channels100 W per channel, min. RMS, driven into 6 at 40 Hz to 20 kHz with no more than 0.8% total harmonic distor- tion. At surround operationFront channels100 W per channel, min. RMS, driven into 6 at 1 kHz with no more than 0.8% total harmonic distortion. Center channel100 W, min. RMS, driven into 6 at 1 kHz, with no more than 0.8% total harmonic distortion. Surround channels100 W per channel, min. RMS, driven into 6 at 1 kHz, with no more than 0.8% total harmonic distortion. Surround back channels100 W per channel, min. RMS, driven into 6 at 1 kHz, with no more than 0.8% total harmonic distortion. AudioAudio Input Sensitivity/ImpedanceDVR/DVD, VCR, DBS, TV:270 mV/47 k Audio Input (DIGITAL IN)*CoaxialDIGITAL IN 1(DVR/DVD):0.5 V(p-p)/75 OpticalDIGITAL IN 2(DBS):-21 dBm to -15 dBm (660 nm 30 nm) USBUSB DIGITAL Audio Output LevelDVR, VCR:270 mV Signal-to-Noise Ratio (66 IHF/78 IHF)80 dB/62 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 dB VideoVideo Input Sensitivity/Impedance Composite video:DVR/DVD, VCR, DBS 1 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 video:DVR/DVD, VCR, DBS 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 SensitivityMonaural12.8 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 standby 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.MB364)1-3 SECTION 1 PRECAUTION 1.1Safety Precautions (1) This design of this product contains special hardware and many circuits 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 personnel 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 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 components 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 Service 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, 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 returned 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 is 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 metal 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 a 1,500 10W resistor paralleled by a 0.15F AC-type capacitor between an exposed 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 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 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 parts. (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 component parts appearing on 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 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.MB364) 1.5Importance administering point on the safety Caution: For continued protection against risk of fire, replace only with same type 2 A/125 V for F101, 2 A/125 V for F102, 6.3 A/125 V for F103. This symbol specifies type of fast operating fuse. Precaution: Pour eviter risques de feux, remplacez le fusible de surete de F101 comme le meme type que 2 A/125 V, 2 A/125 V pour F102, et 6,3 A/125V pour F103. Ce sont des fusibles suretes qui functionnes rapide. Primary board (Forward side) F103 Main amplifier board (Forward side) F102 F101 (No.MB364)1-5 1.6Caution after repairs There are two power supply as the second power supply of the transformer. One is a power supply for power IC(3pin), and another is a power supply for the control(5pin). There are two power supply as the second power supply of the transformer. One is a power supply for power IC(3pin), and another is a power supply for the control(5pin). Please connect first of all and confirm the power supply for the control when you do the energizing examination after it completes of the repair. Please never do the energizing examination in a power supply of power IC alone. Moreover, when the control system breaks down, power IC is occasionally damaged. +B for power IC (3pins) +B for control section (5pins) For power IC(3pins) 1-6 (No.MB364) SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.MB364)1-7 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. (See Fig.2) (3) Remove the top cover in the direction of the arrow. (See Fig.1.) Fig.1 Fig.2 A Top cover B Top cover BB 1-8 (No.MB364) 3.1.2Removing the front panel assembly (See Figs.3 and 4) Remove the top cover. (1) From the top side of the main body, remove the tie bands bundling the wires. (See Fig.3.) Reference: After reassembling, bundle the wires with the new tie bands as before. (See Fig.3.) (2) Disconnect the card wire from the connector CN102 on the main amplifier board. (See Fig.3) (3) Disconnect the wire from the connector CN351 on the main amplifier board. (See Fig.3) (4) Disconnect the wire from the connector CN552 on the input board. (See Fig.3) (5) Disconnect the wire from the connector CN661 on the DSP board. (See Fig.3) (6) Remove the three screws C attaching the front panel as- sembly. (See Fig.3) (7) Remove the screw D attaching the OSD connect 2 board. (See Fig.3) (8) From the bottom side of the main body, remove the four screws E attaching the front panel assembly. (See Fig.4) (9) Release the joints a and remove the front panel assembly in the direction of the arrow. (See Fig.4) Fig.3 Fig.4 C Front panel assembly DC C OSD connect 2 board Main amplifier board CN102 CN351 Tie bands DSP board CN552 Input board CN661 E Front panel assembly E a (No.MB364)1-9 3.1.3Removing the rear panel (See Fig.5) Remove the top cover. (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 twenty-four screws F attaching the rear panel. Fig.5 3.1.4Removing the tuner (See Fig.6) 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 two screws G attaching the tuner to the rear panel and take out the tuner. 3.1.5Removing the subwoofer board (See Fig.6) Remove the top cover. (1) From the top side of the main body, disconnect the wire from the connector CN524 on the subwoofer board. (2) From the back side of the main body, remove the screw H attaching the subwoofer board to the rear panel and take out the subwoofer board. 3.1.6Removing the compulink board (See Fig.6) Remove the top cover. (1) From the top side of the main body, disconnect the wire from the connector CN565 on the compulink board. (2) From the back side of the main body, remove the screw J attaching the compulink board to the rear panel and take out the compulink board. Fig.6 Strain relief F Rear panel Power cord FF J Tuner CN524 Rear panel GHRear panel Subwoofer board CN1 CN565 Compulink board 1-10 (No.MB364) 3.1.7Removing the DSP board (See Fig.7) Remove the top cover. (1) From the back side of the main body, remove the three screws K attaching the DSP board to the rear panel. (2) Remove the screw M attaching the DSP board. (3) From the top side of the main body, remove the two screws N attaching the wire holder board and move the wire holder board with the wires in the direction of the arrow. (4) Disconnect the DSP board from the DSP connect board while releasing the claw b of the connector CN681 on the DSP board. Note: When releasing the claw b, take care not to break it. (5) Take out the DSP board and disconnect the wires from the connectors (CN661, CN682, CN683) on the forward side of the DSP board. Fig.7 3.1.8Removing the primary board (See Fig.8) Remove the top cover. (1) From the top side of the main body, remove the tie bands and disconnect the wire from the connector CN10 on the main amplifier board. Reference: After connecting the wire, bundle the wires with the new tie bands as before. (2) Disconnect the power cord from the connector CN120 on the primary board. (3) Remove the two screws P, screw P and screw P attach- ing the primary board. Reference: When attaching the screw P, attach the wire holder with it as before. When attaching the screw P, attach the earth wire with it as before. (4) Take out the primary board from the main body and remove the wires from the soldered sections c on the reverse side of the primary board. Fig.8 M Wire holder board CN661CN683 CN682 N CN681 b DSP connect board K Rear panel Volume board Tie band Power cord c Wire holder P P CN120 Primary board Tie bands P P CN10 Main amplifier board Earth wire (No.MB364)1-11 3.1.9Removing the power transformer (See Fig.9) Remove the top cover. (1) From the top side of the main body, remove the tie bands bundling the wires. Reference: After reassembling, bundle the wires with the new tie bands as before. (2) Release the wire holder to remove the wire. (3) Disconnect the wires from the connectors (CN106, CN111) on the main amplifier board. (4) Remove the soldered sections d and remove the wires. (5) Remove the four screws Q and take out the power trans- former from the main body. 3.1.10 Removing the trans primary board (See Fig.9) Remove the top cover. (1) From the right side of the main body, remove the wires from the soldered sections d and remove the wires. (2) Remove the solders from the soldered sections e and re- move the tran