JVC-RX7000RBK-avr-sm维修电路原理图.pdf

1-1 RX-7000RBK SERVICE MANUAL AUDIO/VIDEO CONTROL RECEIVER No.20846 Jul. 2000 COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD. RX-7000RBK RX-7000RBK This service manual is printed on 100% recycled paper. Contents Safety precautions - 1-2 Disassembly method - 1-3 Adjustment method - 1-9 Description of major ICs - 1-10 E EN Continental Europe Northern Europe Area Suffix RM-SRX7000R REMOTE CONTROL CONTROL CHANNELVOLUMETV VOL STOPPAUSE FF/ /REW VCRTV/VIDEOTAPE/MDMUTING REC PLAY DVDDVD MUILTICDTAPE/MD TV/DBSPHONOFM/AM VCRANALOG/DIGITAL SURROUNDCENTER SURROUNDTEST REAR-L CD-DISC MODE ON/OFF EFFECTREAR-R SOUNDSEA MODESUBWOOFER RETURN SET MENU AUDIO/ TV/VCR EXIT TEXT DISPLAY SLEEP 123 456 7/P89 100+10 100+FM MODE CATV/DBS MENUMENU ENTERENTER TV/CATV/DBSVCR PTY SEARCHPTYPTY + RX-7000RAUDIO/VIDEO CONTROL RECEIVER STANDBY SPEAKERS 12PHONES SURROUND ON/OFF DSP MODE BALANCE/SURROUND ADJUST SEA MODE SEA ADJUSTSETTING MULTI JOG MASTER VOLUME SOURCE SELECTOR THEATERLIVE CLUBDANCE CLUBHALLPAVILION INPUT ANALOG/DIGITALFM/AM TUNINGTUNER PRESET TUNER/SEA MEMORYFM MODE DVD TV SOUND/DBSPHONO TAPE/MDVCR FM AM CD SOUND SELECT INPUT ATT. BASS BOOST ONE TOUCH OPERA TION SOURCE NAME COMPULINK Remote DIGIT AL ENHANCEDCOMPULINK CONTROLSYSTEM PTY SEARCHDISPLAY MODE EONTA/NEWS/INFO STANDBY/ON D I G I T A L RadioFans.CN 收音机爱 好者资料库 1-2 RX-7000RBK Safety Precautions 1. This design of this product contains special hardware and many circuits and components specially for safety purposes. 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 performed 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 characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Service 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 characteristics 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 re-assembling. 5. Leakage currnet check (Electrical shock hazard testing) After re-assembling the product, always perform an isolation check on the exposed metal parts of the product (antenna 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 , particularly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage current 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 ohms per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15 F 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 eachexposed metal part, particularly any exposed metal part having a return path to the chassis, and meausre 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.). Warning 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. 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 !CAUTION Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system. http:/getMANUAL.com RadioFans.CN 收音机爱 好者资料库 1-3 RX-7000RBK Remove the four screws A attaching the top cover on both sides of the body. Remove the three screws B on the back of the body. Remove the top cover from behind in the direction of the arrow while pulling both sides outward. 1. 2. 3. Disassembly method Removing the top cover (See Fig.1) Prior to performing the following procedure, remove the top cover. Remove the power cord stopper from the rear panel by moving it in the direction of the arrow. Remove the twenty-six screws E attaching the each boards to the rear panel on the back of the body. Remove the three screws F attaching the rear panel on the back of the body. 1. 2. 3. Removing the rear panel (See Fig.4) Prior to performing the following procedure, remove the top cover. Disconnect the card wire from connector CN400 on the main board and CN402 on the power supply board in the front panel assembly. Cut off the tie band fixing the harness. Disconnect the harness from connector CN202 on the video board. Remove the three screws C attaching the front panel assembly. Remove the five screws D attaching the front panel assembly on the bottom of the body. Detach the front panel assembly toward the front. 1. 2. 3. 4. 5. Removing the front panel assembly (See Fig.2 and 3) Fig.1 Fig.2 Fig.3 Fig.4 A 2 A 2 B Top cover C Power supply board CN402 Main board CN400 Tie band Video board CN202 D E 3 E 3 E 5 E 3 E 3 E 2 E E F EE F F Cord stopper C Front panel assembly Front panel assembly D Rear panel 1-4 RX-7000RBK Prior to performing the following procedure, remove the top cover and the rear panel. Cut off the tie band fixing the harness. Disconnect the harness from connector CN202 on the video board. Disconnect the tuner board from connector CN101, CN102 on the main board. Disconnect the SEA board and the audio board from connector CN452, CN301and CN302 on the main board. Disconnect the V-audio board from connector CN303 on the main board. Disconnect the relay board 4.Then, disconnect the video board and the S-video board from connector CN201 and CN241 on the main board. Disconnect the DSP board from connector CN501 and CN601 on the main board while removing the DSP board from the bracket fixing the lower part of the DSP board at the same time. Disconnect the compulink board from connector CN255 on the main board. 1. 2. 3. 4. 5. 6. 7. 8. Removing each board connected to the rear side of the main board (See Fig.5 to 9) Fig.5 Fig.6 Fig.7 Fig.8Fig.8 Fig.8 Fig.9 CN202 Main board CN101,CN102 Tie band V-audio board S-video board Video board Tuner board Audio board SEA board Main board CN452 Main board CN302,CN301 Audio board V-audio board Main board CN303 CN301 CN452 CN302 Relay board 4 S-video board Video board Main board CN241 CN303 Main board CN201 Compulink board Main board CN255 Main board CN601 DSP board Main board CN501 CN241 CN201 Bracket 1-5 RX-7000RBK Prior to performing the following procedure, remove the top cover and the rear panel. Removing the main board / regulator board (See Fig.10 to 12) It is not necessary to remove the boards connected to the back of the main board. But to disassemble the main board and the power supply board efficiently, remove them. ATTENTION: Disconnect the card wire from connector CN400 on the main board. Cut off the four tie bands fixing the harnesses. Disconnect the harness from connector CN811 on the power transformer board. Disconnect the relay board 1, 2 and 3 from the main board and the power supply board. Disconnect the harness from connector CN704, CN821, CN901, CN711, CN712, CN931 and CN932, CN961. Remove the screw G attaching the regulator board to the heat sink cover. Remove the eight screws H attaching the main board to the heat sink cover. Remove the five screws I and the screw J attaching the main board to the chassis base (The resistor board will come off at the same time). 1. 2. 3. 4. 5. 6. 7. 8. Prior to performing the following procedure, remove the top cover. Disconnect the harness from connector CN881 on the resistor board. Remove the screw J attaching the resistor board. 1. 2. Removing the resistor board (See Fig.13) Fig.10 Fig.11 Fig.12 Fig.13 Power supply board Tie band Relay board 1 Main board CN400 Relay board 2 Tie band Main board Relay board 3 CN811 CN932CN961 CN931 CN712 CN711 CN901CN821 CN704 HH HHG Regulator board Resistor board I J I I Main board Power transformer Power transformer J Resistor board CN881 Main board 1-6 RX-7000RBK Prior to performing the following procedure, remove the top cover. Cut off the four tie bands fixing the harnesses. Disconnect the harnesses from connector CN711, CN712, CN704 and CN901 on the main board respectively. Remove the four screws K and six screws L attaching the amplifier board. If necessary, unsolder the harness connected to connector CN803 and CN952 on the amplifier board. 1. 2. 3. 4. Removing the amplifier board (See Fig.10 and 14) Prior to performing the following procedure, remove the top cover and the rear panel. Remove the screw N attaching the power / fuse board. Unsolder the power cord and other harnesses connected to the power / fuse board. 1. 2. Removing the power / fuse board (See Fig.16) Prior to performing the following procedures, remove the top cover. Unsolder the two harnesses connected to the power transformer. Disconnect the harness from connector CN811 and the harnesses connected to connector CN55 and CN56 on the power transformer board. Remove the four screws M attaching the power transformer. 1. 2. 3. Removing the power transformer (See Fig.15) Fig.10 Fig.14 Fig.15 Fig.16 Power supply board Tie band Relay board 1 Main board CN400 Relay board 2 Tie band Main board Relay board 3 CN811 CN932CN961 CN931 CN712 CN711 CN901CN821 CN704 Power transformer Amplifier board L L L CN803 CN952 KK CN711 CN712 Tie band M M CN55 CN56 CN811 Power transformer Solder Power transformer N Solder Power / fuse board Power cord 1-7 RX-7000RBK Prior to performing the following procedure, remove the top cover and the front panel. Remove the one nut attaching the headphone jack of the power supply board on the front side of the body. Disconnect the relay board 1, 2 and 3 from the power supply board and the main board respectively. Disconnect the harness connected to connector CN55 and CN56 on the power transformer board (If necessary, cut off the two tie bands fixing the harness on the side of the chassis base). Remove the four screws O attaching the power supply board and pull out the power supply board from the front bracket backward. Unsolder the three harnesses connected to the power supply board. 1. 2. 3. 4. 5. Removing the power supply board (See Fig.17 and 18) Prior to performing the following procedure, remove the top cover and the front panel assembly. Pull out the volume knob on the front side of the front panel and remove the nut attaching the system control board. Remove the six screws P attaching the system control board on the back of the front panel and disconnect the harness from connector CN422 on the system control board. Disconnect the harness from connector CN430 on the power switch board. Remove the five screws Q attaching the power switch board. 1. 2. 3. 4. Removing the system control board / power switch board (See Fig.19 to 20) Fig.17 Fig.18 Fig.19 Fig.20 Power supply board Nut Headphone jack Tie band Tie band Relay board 1 Relay board 2 Relay board 3 Power transformer Solder O O O Headphone jack Solder Power supply board Front panel Nut Volume knob System control board Power switch board Front panel assembly P Q CN430 CN422 Q P P CN55 CN56 1-8 RX-7000RBK Prior to performing the following procedure, remove the top cover, the front panel assembly and the system control board. Remove the six screws R attaching the operation switch board on the back of the front panel. On the back of the front panel, release the four joints by pushing the joint tabs inward. Remove the operation switch board toward the front. Pull out the multi jog knob and the source selector knob. Remove the two screws S attaching the operation switch board. 1. 2. 3. 4. Removing the operation switch board (See Fig.21 to 23) Fig.21 Fig.22 Fig.23 Front panel R R R Joint Multi jog knob Source selector knob S Operation switch board 1-9 RX-7000RBK Adjustment method 1.Set the volume control to minimum during this adjustment.(No signal poser lappareil sur une surface plate. Veiller galement ce que lair circule le mieux possible comme illustr. Voorzichtig: Zorg Voor Goede Ventilatie Om gevaar voor brand of een elektrische schok te voorkomen, dient u bij opstelling van het apparaat op de volgende punten te letten: Voorkant:Voldoende ruimte vrij houden. Zijkanten:Minstens 10 cm aan weerszijden vrij houden. Bovenkant:Niets bovenop plaatsen; 10 cm speling geven. Achterkant:Minstens 15 cm ruimte achteraan vrij houden. Onderkant:Opstellen op een egaal horizontaal oppervlak. Bovendien moet er rondom voldoende luchtdoorstroming zijn, zoals in de afbeelding aangegeven. Precaucin: Ventilacin Adecuada Para evitar el riesgo de choque elctrico e incendio y para proteger el aparato contra daos. Ubique el aparato de la siguiente manera: Frente:Espacio abierto sin obstrucciones Lados:10 cm sin obstrucciones a los lados Parte superior: 10 cm sin obstrucciones en la parte superior Parte trasera:15 cm sin obstrucciones en la parte trasera Fondo:Sin obstrucciones, colquelo sobre una superficie nivelada Adems, mantenga la mejor c