JVC-RVNB50-cs-sm维修电路原理图.pdf

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1、SERVICE MANUAL COPYRIGHT 2010 Victor Company of Japan, Limited No.MB723 2010/4 POWERED WOOFER CD SYSTEM MB72320104 SERVICE MANUAL RV-NB50B, RV-NB50E, RV-NB50EN, RV-NB50EV, RV-NB51WE, RV-NB51WEN, RV-NB51WEV, RV-NB52BB, RV-NB52BE, RV-NB52BEN, RV-NB52BEV, RV-NB50J, RV-NB50C, RV-NB50US, RV-NB50A, RV-NB5

2、2BJ COPYRIGHT 2010 Victor Company of Japan, Limited Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

4、 . . . . . . . . 1-5 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5、. . . . . . . . . . . . . . . 1-9 RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB723) SPECIFICATION Designs & specifications are subject to change without notice. Disc player CD capacity1CD Signal-to-noise ratio85 dB Dynamic range90 dB Tuner FM tuning range87.50 MHz - 108.00 MHz AntennaFM telescopic antenna Gene

6、ral SpeakersFull range8 cm (3 3/16”) cone 2 Speaker impedance16 Super woofer13 cm (5 1/8”) cone 2 Speaker impedance7 Output power40 W Input terminalUSBPlayable filesMP3, WMA Compatible deviceMass storage class Output powerDC 5 V 500 mA Dock for iPodDC 5 V 500 mA DC INDC 12 V Output terminalPHONES (3

7、.5) 1 Power supplyAC 230 V , 50 Hz (Europe) AC 120 V , 60 Hz (Northern America) AC 240 V , 50 Hz (Australia) AC 110 V - 240V , 50 Hz/60 Hz (Other area) DC 15 V (R20 (SUM-1)/D (13D)-size batteries 10) External DC 12 V (Car battery via the optional car adapter) PowerconsumptionWhen using an AC outlet2

8、8 W (at operation) 1 W (on standby) External DC 12 V2 A (power on mode) Dimensions666 mm (26 1/4”) 231 mm (9 1/8”) 240 mm (9 1/2”) (W/H/D) MassApprox. 6.8 kg (15.0 lds) (without batteries stored in the battery compartment) RadioFans.CN 收音机爱 好者资料库 (No.MB723)1-3 SECTION 1 PRECAUTION 1.1Safety Precauti

9、ons (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 us

10、ed 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 an

11、d 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

12、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 ident

13、ified 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

14、) 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

15、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

16、, 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

17、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 voltmete

18、r 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

19、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

20、 (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)

21、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-

22、 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 crit

23、ical 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)

24、 1500 10W 0.15 F AC TYPE 1-4 (No.MB723) 1.5Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing re

25、pairs. 1.5.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products. Be careful to use proper grounding in the area where repairs are being performed. (1) Ground the workbench Ground the wor

26、kbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical pickup) on it. (2) Ground yourself Use an anti-static wrist strap to release any static electricity built up in your body. (3) Handling the optical pickup In order to

27、maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.) Do not use a tester to check the condition of the laser diode in the o

28、ptical pickup. The testers internal power source can easily destroy the laser diode. 1.6Handling the traverse unit (optical pickup) (1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit. (2) Cut off the shorted part of the flexible cable using nip

29、pers, etc. after replacing the optical pickup. For specific details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a time when attaching it to the connector. (3) Handle the flexible cable carefully as it m

30、ay break when subjected to strong force. (4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it. 1M Conductive material (conductive sheet) or iron palate (caption) Anti-static wrist strap (No.MB723)1-5 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This servi

31、ce manual does not describe SPECIFIC SERVICE INSTRUCTIONS. SECTION 3 DISASSEMBLY 3.1Main body (Used figure were RV-NB50E) 3.1.1Removing the Punching panel (See Fig.1) (1) Remove the twelve screws A attaching the both side of the Punching panel. Fig.1 3.1.2Removing the Rear cabinet (See Fig.2, 3, 4,

32、5) (1) Remove the four screws B attaching the both side of the Subwoofer. (See Fig.2) Fig.2 (2) Remove the ten screws C attaching the Rear cabinet. (See Fig.3) (3) Remove the two screws D attaching the CD mechanism. (See Fig.3) Fig.3 (4) Disconnect the connector wire from Power supply board connecte

33、d to connector CN101 of the Main board. (See Fig.4) Fig.4 A A B C CCD CN101 1-6 (No.MB723) (5) Disconnect the connector wire from Power supply board connected to connector CN301 of the Main board. (See Fig.5) Fig.5 3.1.3Removing the SMPS board (See Fig.6, 7) (1) Remove the two screws E attaching the

34、 SMPS board. (See Fig.6) Fig.6 (2) Disconnect the connector wires from Power supply board connected to connectors of SMPS board. (See Fig.7) Fig.7 3.1.4Removing the Power supply board (See Fig.8) (1) Remove the two screws F and two screws G attaching the Power supply board. Fig.8 3.1.5Removing the C

35、D mechanism (See Fig.9, 10, 11, 12) (1) Disconnect the connector wire from Left speaker connect- ed to connector CN102 of the Main board. (See Fig.9) Fig.9 (2) Disconnect the connector wire from Right speaker con- nected to connector CN103 of the Main board. (See Fig.10) Fig.10 CN301 E connector FG

36、CN102 CN103 (No.MB723)1-7 (3) Disconnect the card wire from Main board connected to connector CN450 of the iPod board. (See Fig.11) (4) Disconnect the connector wire from Right key board con- nected to connector CN303 of the Main board. (See Fig.11) (5) Disconnect the connector wire from USB board c

37、onnected to connector CN201 of the Main board. (See Fig.11) (6) Disconnect the connector wire from Left key board con- nected to connector CN301 of the Main board. (See Fig.11) Fig.11 (7) Disconnect the connector wire from LCD board connected to connector CN304 of the Main board. (See Fig.12) Fig.12

38、 3.1.6Removing the Main board (See Fig.13, 14, 15, 16) (1) Disconnect the card wire from pickup connected to connec- tor CN701 of the Main board. (See Fig.13) Fig.13 (2) Disconnect the connector wire from Main board connected to connector of the Mechanism board. (See Fig.14) Fig.14 (3) Disconnect th

39、e connector wire from Door switch board con- nected to connector CN305 of the Main board. (See Fig.15) Fig.15 (4) Remove the four screws H attaching the Main board. (See Fig.16) Fig.16 CN450CN301 CN303 CN201 CN304 CN701 connector CN305 HH 1-8 (No.MB723) 3.1.7Removing the iPod board (See Fig.17) (1)

40、Remove the two screws J attaching the iPod board. Fig.17 3.1.8Removing the LCD board (See Fig.18) (1) Remove the three screws K attaching the LCD board. Fig.18 3.1.9Removing the Front panel (See Fig.19) (1) Disconnect the connector wire from Right key board con- nected to connector CN407 of the Volu

41、me board. (2) Disconnect the connector wire from Left key board con- nected to connector CN408 of the Volume board. (3) Remove the four screws L attaching the Front panel. (4) Disengage four hooks a engaged Front panel. Fig.19 3.1.10 Removing the Key board (See Fig.20) (1) Remove the twelve screws M

42、 attaching the Key boards. Fig.20 3.1.11 Removing the Right speakers (See Fig.21, 22, 23) (1) Remove the two screws N attaching the Woofer, (See Fig.21) Fig.21 (2) Remove the four screws P attaching the Speaker cover. (See Fig.22) Fig.22 J KK LL CN407CN408 hook a hook a M M M N PP (No.MB723)1-9 (3)

43、Remove the four screws Q attaching the Main speaker. (See Fig.23) Fig.23 3.1.12 Removing the Left speaker (1) Left speaker removing method as follow the 3.1.11 Re- moving the Right speakers. SECTION 4 ADJUSTMENT This service manual does not describe ADJUSTMENT. SECTION 5 TROUBLESHOOTING This service

44、 manual does not describe TROUBLESHOOTING. QQ (No.MB723) VSE Printed in Japan Victor Company of Japan, Limited Home Entertainment Business Division Personal AV Operation 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan SCHEMATIC DIAGRAMS RV-NB50B, RV-NB50E, RV-NB50EN, RV-NB50EV, RV-NB51WE, RV

45、-NB51WEN, RV-NB51WEV, RV-NB52BB, RV-NB52BE, RV-NB52BEN, RV-NB52BEV, RV-NB50J, RV-NB50C, RV-NB50US, RV-NB50A, RV-NB52BJ Contents Block diagrams Standard schematic diagrams Printed circuit boards 2-1 2-2 2-7 to 11 POWERED WOOFER CD SYSTEM No.MB723SCH 2010/4 COPYRIGHT 2010 Victor Company of Japan, Limi

46、ted. Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) 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 ident

47、ified by the mark nearby are critical for safety. 2-1 VR401 M VOLUME S407 Operation S411 Switch KEY1 IC401 Remocon RMC CN407 CN406 CN402 CN303 VR402 W VOLUME S401 Operation S406 Switch KEY2 D401 Standby LED CN409 CN408 CN401 CN301 LED CN305 CD DOOR SWITCH CD DOOR SWITCH IC302 T5CL8 SYSTEM MICON IC70

48、3 T5C3J-7D13 USB Driver IC707 SST39VF800A FLASH IC701 CD/USB RF DSP TC94A92FG IC702 Motor driver BA5826HFP USB CD L/R 5V 3.3V1.5V IC705 BH15FB1WG Q702 KTC3205 Q207 KTA1273 USB 5V SW CN201 CN430 JK430 TO USB CN701CN702 CD PICK UP Tracking & Focus Coil RESET SW Spindle & Fleed motor CN450 CN202 TO iPo

49、d JK450 iPod L/R iPod 5V SWQ204 KTA1273 5V OUT IC201 MP1842 DC/DC 5V 9V OUT Q105 2SD2394E IC202 BA4510FV Buffer iPod L/R IC203 FUNCTION BD3490FV 3.3V IC301 HT7533 IC303 BD4827 RESET IC304 AT2402 EEPROM TUNER L/R HP MUTE Q030 Q031IC002 HP AMP NJM4580 IC101 MAIN AMP TDA7266SA MUTE L/R Q102 WVOL1 WVOL2 WVOL3 Q109 Q110 Q111 IC102 WOOFER AMP LV49152V IC107 HPF & LPF IC104 to IC106 INPUT AMP PHASE AMP COMP AMP IC001 S4702S TUNER Section Q001 2SC3052F 3.3V OUT LCD TO FM ANT CN304 CN403 M L+/- W L+/- CN103 M R+/- W R+/- CN102CN301 CN440