JVC-RX8030VBK-avr-sm维修电路原理图.pdf

SERVICE MANUAL COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LIMITED No.MB103 2003/12 AUDIO/VIDEO CONTROL RECEIVER MB103200311 RX-8030VBK TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14 MASTER VOLUME PUSH OPEN SUBWOOFER OUT ON/OFF SPEAKERS ON/OFF PHONES 1 STANDBY RX-8030V AUDIO/VIDEO CONTROL RECEIVER CC CONVERTER ANALOG DIRECT 2 STANDBY/ON TV SOUND /DBS VIDEOVCR 2VCR 1DVDDVD MULTIAMFMTAPE/MDCDRCDPHONO SETTINGADJUST QUICK SPEAKER SETUPEXIT SURROUND DSP SURROUND/ DSP OFF 231 564 897/P 0+10 A/V CONTROL RECEIVER 10/0 Area Suffix UJ - U.S.Military RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB103) SPECIFICATION Designs & specifications are subject to change without notice. Amplifier Output Power At Stereo operationFront ch100 W per channel, min. RMS, driven into 8 at 1 kHz, with no more than 0.8% total harmonic distortion. (IEC 268-3/DIN) At Surround operationFront ch100 W per channel, min. RMS, driven into 8 at 1 kHz, with no more than 0.8% total harmonic distortion. Center ch100 W, min. RMS, driven into 8 at 1 kHz, with no more than 0.8% total harmonic distortion. Surround ch100 W per channel, min. RMS, driven into 8 at 1 kHz, with no more than 0.8% total harmonic distortion. Surround Back ch 100 W, min. RMS, driven into 8 at 1 kHz, with no more than 0.8% total harmonic distortion. Audio Audio Input Sensitivity/ Impedance (1 kHz) PHONO IN (MM) : 2.5 mV/47 k DVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO IN : 200 mV/47 k CD IN, CDR IN, TAPE/MD IN : 200 mV/47 k Audio Input (DIGITAL IN)*CoaxialDIGITAL 1 (DVD) : 0.5 V(p-p)/75 OpticalDIGITAL 2 (CD), DIGITAL 3 (TV), DIGITAL 4 (CDR) : -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 LevelPRE OUT : 1 V Recording Output LevelVCR 1 OUT, VCR 2 OUT, CDR OUT, TAPE/MD OUT : 200 mV Digital outputOptical : DIGITAL OUTPUT Signal wave length : 660 nm Output level : -21 dBm to -15 dBm Signal-to-Noise Ratio (66 IHF/DIN) PHONO IN : 70 dB/66 dB DVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO : 87 dB/67 dB CD IN, CDR IN, TAPE/MD IN : 87 dB/67 dB Frequency Response (8 )PHONO IN : 20 Hz to 20 kHz (1 dB) DVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO : 20 Hz to 100 kHz (+1 dB, -3 dB) CD IN, CDR IN, TAPE/MD IN : 20 Hz to 100 kHz (+1 dB, -3 dB) RIAA Phono Equalization1 dB (20 Hz to 20 kHz) Equalization (5 bands)63 Hz, 250 Hz, 1 kHz, 4 kHz, 16 kHz (8 dB) Bass boost+6 dB 1 dB at 100 Hz Video Video Input Sensitivity/ Impedance Composite video : DVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO 1 V(p-p)/75 S-video : DVD 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 Component video : DVD IN, DBS IN(Y: luminance) : 1 V(p-p)/75 (PB/PR) : 0.7 V(p-p)/75 Video Output LevelComposite video : VCR 1 OUT, VCR 2 OUT, MONITOR OUT1 V(p-p)/75 S-video : VCR 1 OUT, VCR 2 OUT, MONITOR OUT(Y: luminance) : 1 V(p-p)/75 (C: chrominance, burst) : 0.286 V(p-p)/75 Component video(Y: luminance) : 1 V(p-p)/75 (PB/PR) : 0.7 V(p-p)/75 SynchronizationNegative Signal-to-Noise Ratio45 dB FM tuner (IHF) Tuning Range87.50 MHz to 108.00 MHz Usable SensitivityMonaural : 12.8 dBf (1.2 V/75 ) 50 dB Quieting SensitivityMonaural : 16.0 dBf (1.7 V/75 ) Stereo : 37.5 dBf (20.5 V/75 ) Stereo Separation at REC OUT 35 dB at 1 kHz AM tuner Tuning Range531 kHz to 1 602 kHz (at 9 kHz intervals) 530 kHz to 1 600 kHz (at 10 kHz intervals) General Power RequirementsAC 110 V/127 V/220 V/230 V - 240 V , adjustable with the voltage selector, 50 Hz/60 Hz Power Consumption250 W (at operation) 4.5 W (in standby mode) Dimensions (W H D)435 mm 157 mm 425 mm Mass12.3 kg RadioFans.CN 收音机爱 好者资料库 (No.MB103)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 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 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.MB103) SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.MB103)1-5 SECTION 3 DISASSEMBLY 3.1Removing the top cover (See Fig.1) (1) From the both sides of the main body, remove the four screws A attaching the top cover. (2) From the back side of the main body, remove the three screws B attaching the top cover. (3) Remove the top cover in the direction of the arrow 2 while extending the lower sections of the top cover in the direc- tion of the arrow 1. Fig.1 3.2Removing the rear panel (See Fig.2) Prior to performing the following procedures, 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. (2) Remove the thirty-six screws C, two screws D and three screws E attaching the rear panel. Fig.2 3.3Removing the I/O board (See Fig.3) Prior to performing the following procedures, remove the top cover and rear panel. (1) From the top side of the main body, remove the two plastic rivets in the direction of the arrow 1.and remove the stop- per boards in the direction of the arrow 2. (2) Remove the tie bands bundling the wires. (3) Disconnect the wire from the connector CN722 on the cen- ter board. (4) Disconnect the wire from the connector CN714 on the front board (L). (5) Disconnect the wire from the connector CN717 on the sur- round back board. (6) Disconnect the wire from the connector CN719 on the front board (R). (7) Disconnect the wire from the connector CN723 on the main board. (8) Disconnect the I/O board from the connectors CN205, CN361, CN381 and CN501 in an upward direction. Fig.3 Top cover A 2 1 1 B A E Strain relief E Rear panel C E C CDC C 1 2 2 CN381 CN205 CN501 Plastic rivet Plastic rivet Stopper board Stopper board Tie band Center board Tie bands Front board(L)Surround back board Front board(R) CN719 CN717CN714 CN722 CN723 Main board I/O board 1 CN361 1-6 (No.MB103) 3.4Removing the front panel assembly (See Figs.4 and 5) Prior to performing the following procedures, remove the top cover, rear panel and I/O board. (1) From the top side of the main body, remove the tie bands bundling the wires. (See Fig.4) (2) Disconnect the wire from the connector CN599 on the DSP board. (See Fig.4) (3) Disconnect the wire from the connector CN415 on the Audio2 board. (See Fig.4) (4) Disconnect the wire from the connector CN206 on the Vid- eo board. (See Fig.4) (5) Disconnect the wire from the connector CN244 on the S- Video board. (See Fig.4) (6) Disconnect the card wire from connector CN402 on the power supply board. (See Fig.4) (7) Disconnect the card wire from connector CN400 on the mi- con board. (See Fig.4) (8) Remove the tie band and wire protection board fixing the card wire. (See Fig.4) (9) Remove the three screws F and screw G attaching the front panel assembly. (See Fig.4) REFERENCE : When attaching the screw G, attach the earth wire with it. (10) From the bottom side of the main body, remove the four screws H attaching the front panel assembly. (See Fig.5) (11) Remove the front panel assembly in the direction of the ar- row. (See Fig.5) Fig.4 Fig.5 FF FG Front panel assemblyEarth wire CN402 Power supply board Tie band Tie band Micon board CN244 S-Video boardVideo board CN206CN415 Audio2 board CN599 DSP board CN400 Tie band Card wire Tie band Wire protection board HH Front panel assembly (No.MB103)1-7 3.5Removing the tuner, DSP board, Audio board, Audio2 board, Video board and S-Video board (See Fig.6) Prior to performing the following procedures, remove the top cover, rear panel and I/O board. (1) From the top side of the main body, remove the tie band bundling the wire. (2) Disconnect the card wire from connector CN314 on the Au- dio board, and take out the tuner. (3) Disconnect the wire from the connector CN599 on the DSP board. (4) Disconnect the DSP board from the connector CN601 on the micon board, and take out the DSP board. (5) Disconnect the Audio board from the connectors (CN101, CN303) on the micon board, and take out the Audio board. (6) Disconnect the wire from the connector CN415 on the Audio2 board. (7) Disconnect the Audio2 board from the connector CN301 on the micon board, and take out the Audio2 board. (8) Disconnect the wire from the connector CN206 on the Vid- eo board. (9) Disconnect the Video board from the connector CN201 on the micon board, and take out the Video board. (10) Disconnect the wire from the connector CN244 on the S- Video board. (11) Disconnect the S-Video board from the connector CN241 on the micon board, and take out the S-Video board. Fig.6 3.6Removing the micon board (See Fig.7) Prior to performing the following procedures, remove the top cover, rear panel, I/O board, tuner, DSP board, Audio board, Audio2 board, Video board and S-Video board. (1) From the top side of the main body, disconnect the card wire from the connector CN400 on the micon board. (2) Disconnect the relay board from the connector CN81 on the micon board. (3) Disconnect the parallel wire from the connectors CN931 and CN932 on the micon board. (4) Disconnect the parallel wire from the connector CN831 on the main board. (5) Remove the three screws J attaching the micon board. REFERENCE : When attaching the screw J, attach the earth wire with it. (6) Remove the three screws K attaching the transistors (Q921, Q931, Q941) to the chassis base. (7) Loosen the screw L attaching the micon board. Fig.7 CN314 Tuner Audio board Card wire CN601 DSP board CN303 Tie band CN101 Video board S-video board CN206CN244 Micon board CN415 Audio2 board CN599 CN301 CN201 CN241 CN400 Micon board Relay board CN81 Card wire CN931 CN932 J J J K Transistors (Q921,Q931,Q941) Chassis base L CN831Main board Earth wire 1-8 (No.MB103) 3.7Removing the speaker board (See Fig.8) Prior to performing the following procedures, remove the top cover, rear panel. (1) From the to