JVC-NXPB10-cd-sm维修电路原理图.pdf

《JVC-NXPB10-cd-sm维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《JVC-NXPB10-cd-sm维修电路原理图.pdf（39页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUAL COPYRIGHT 2010 Victor Company of Japan, Limited No.MB730 2010/10 CD PORTABLE SYSTEM MB730201010SERVICE MANUAL NX-PB10B, NX-PB10E, NX-PB10EY COPYRIGHT 2010 Victor Company of Japan, Limited Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF

2、 CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、 . . . . 1-6 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、. . . . . . . . . . . . . . 1-8 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 Preliminary RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB730) SPECIFICATION Design and specifications are subject to change wi

5、thout notice. Amplifier section Output Power4 W (2 W + 2 W) at 16 (10% THD) Audio InputAUDIO IN: Stereo mini ( 3.5 mm) 250 mV/47 k Digital inputUSB terminal Tuner FM tuning range87.50 MHz - 108.00 MHz Disc player Dynamic range80 dB Wow and flutterImmeasurable USB USB specificationCompatible with USB

6、 2.0 Full Speed Compatible deviceMass storage class Compatible systemFAT16, FAT32 Output powerDC 5 V 500 mA SD Compatible deviceSD, SDHC Compatible systemFAT16, FAT32 iPod Output powerDC 5 V 500 mA General Speaker typeBass-Reflex type Speaker unit8 cm x 2 Speaker impedance16 Power requirementsAC 230

7、 V / 50 Hz Power consumption25 W (at operation) 1.00 W or less (on standby) Dimensions (approx.)400 mm 215 mm 91 mm (W H D) Mass (approx.)2.3 kg RadioFans.CN 收音机爱 好者资料库 (No.MB730)1-3 SECTION 1 PRECAUTION 1.1Safety Precautions (1) This design of this product contains special hardware and many circuit

8、s 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 perso

9、nnel 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 o

10、r 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 com

11、ponents 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

12、 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,

13、 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 retur

14、ned 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

15、 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

16、 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

17、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 p

18、ath 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

19、 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

20、. (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 co

21、mponent 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 typ

22、e 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.MB730) 1.5Preventing static electricity Elect

23、rostatic 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 repairs. 1.5.1 Grounding to prevent damage by static electricity Static electric

24、ity 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 workbench by laying conductive material (such as a conductive sheet) or an iron p

25、late 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 maintain quality during transport and before installation, both sides of the l

26、aser 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 optical pickup. The testers internal power source can easily destroy the laser

27、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 nippers, etc. after replacing the optical pickup. For specific details, refer to

28、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 may break when subjected to strong force. (4) I t is not possible to adjust the

29、 semi-fixed resistor that adjusts the laser power. Do not turn it. 1.7Attention when traverse unit is decomposed *Please refer to Disassembly method in the text for the pickup unit. Apply solder to the short land sections before the card wire is disconnected from the connector on the servo board. (I

30、f the card wire is disconnected without applying solder, the pickup may be destroyed by static electricity.) In the assembly, be sure to remove solder from the short land sections after connecting the card wire. 1M Conductive material (conductive sheet) or iron palate (caption) Anti-static wrist str

31、ap solder short (No.MB730)1-5 1.8Important for laser products 1.CLASS 1 LASER PRODUCT 2.CAUTION : (For U.S.A.) Visible and/or invisible class II laser radiation when open. Do not stare into beam. (Others) Visible and/or invisible class 1M laser radiation when open. Do not view directly with optical

32、instruments. 3.CAUTION : Visible and/or invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure to beam. 4.CAUTION : This laser product uses visible and/or invisible laser radiation and is equipped with safety switches which prevent emission of radiation when the

33、 drawer is open and the safety interlocks have failed or are defeated. It is dangerous to defeat the safety switches. 5.CAUTION : If safety switches malfunction, the laser is able to function. 6.CAUTION : Use of controls, adjustments or performance of procedures other than those specified here in ma

34、y result in hazardous radiation exposure. REPRODUCTION AND POSITION OF LABELS and PRINT ! Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. WARNING LABEL and PRINT 1-6 (No.MB730) SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual

35、 does not describe SPECIFIC SERVICE INSTRUCTIONS. SECTION 3 DISASSEMBLY 3.1Main body (Used model: NX-PB10E) 3.1.1Removing the Rear cover (See Fig.1, 2, 3) (1) Remove the three screws A, three screws B and two screws C attaching the Rear cabinet. (See Fig.1) Fig.1 (2) Disconnect the antenna wire from

36、 post pin FM1 of the Main board. (See Fig.2) Fig.2 (3) Disconnect the connector wire from Trans board connect- ed to connector CN402 of the Main board. (See Fig.3) Fig.3 3.1.2Removing the Main board (See Fig.4) (1) Disconnect the card wire from iPod board connected to connector CN103 of the Main boa

37、rd. (2) Disconnect the card wire from Key board connected to con- nector CN701 of the Main board. (3) Disconnect the connector wire from Left speaker connect- ed to connector J2 of the Main board. (4) Disconnect the connector wire from Right speaker con- nected to connector J3 of the Main board. (5)

38、 Disconnect the connector wire from Door switch board con- nected to connector CN405 of the Main board. (6) Disconnect the connector wires from USB board connect- ed to connectors J13, CN603 and CN306 off the Main board. (7) Disconnect the card wire from USB board connected to connector CN607 of the

39、 Main board. (8) Disconnect the connector wire from Door motor connected to connector CN404 of the Main board. (9) Disconnect the connector wire from CD mechanism con- nected to connector CN902 of the Main board. (10) Disconnect the flexible wire from CD pickup connected to connector CN901 of the Ma

40、in board. (11) Remove the six screws D attaching the Main board. Fig.4 BCCA AABB FM1 CN402 DD DDD DCN405J2J3 CN306CN902CN103 CN404 J13CN607 CN701CN603CN901 (No.MB730)1-7 3.1.3Removing the Key board (See Fig.5) (1) Remove the nine screws E attaching the Key board. Fig.5 3.1.4Removing the USB board (S

41、ee Fig.6) (1) Remove the three screws F attaching the USB board. (2) Remove the two screws G and one screw H attaching the Door switches. Fig.6 3.1.5Removing the iPod boar (See Fig.7) (1) Remove the two screws J attaching the holder. (2) Disengage the shaft of iPod bracket from Front cabinet. Fig.7

42、3.1.6Removing the Door motor (See Fig.8) (1) Remove the three screws K attaching the Door motor. Fig.8 3.1.7Removing the CD mechanism (See Fig.9) (1) Remove the three screws L attaching the CD mechanism. Fig.9 3.1.8Removing the Trans board (See Fig.10) (1) Disconnect the power cord from connector CN

43、1103 of the Trans board. (2) Disconnect the connector wires from Power transformer connected to connector CN1101 and CN1104 of the Trans board. (3) Remove the three screws M attaching the Trans board. Fig.10 E G F H J shaft K L M M CN1103CN1104CN1101 1-8 (No.MB730) SECTION 4 ADJUSTMENT This service

44、manual does not describe ADJUSTMENT. SECTION 5 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING. 1-9 (No.MB730) (No.MB730) VSE Printed in Japan Victor Company of Japan, Limited Personal AV Operation 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan SCHEMATIC DIAGRAMS NX-PB

45、10B, NX-PB10E, NX-PB10EY Contents Block diagrams Standard schematic diagrams Printed circuit boards 2-1 2-2 2-10 to 12 CD PORTABLE SYSTEM No.MB730SCH 2010/12 COPYRIGHT 2010 Victor Company of Japan, Limited. Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) In r

46、egard 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. 2-1 Block diagram IC705 U1 LCD KEY REMOTE SENSOR

47、 IC304 IC702 MOTO OPEN/CLOSE SW DISC PICKUP IC901 SPINDLE MOTOR M SLED MOTOR M IC905 MOTOR/ACTUATOR DRIVER IC902 3.3V IC404 USB IPOD USB+5V IPOD+5V IC406 IC405 VOL IC 3.3V IC403 CD-L CD-R IPOD-L IPOD-R IC401 SIGNAL SELECT SW. VOL CONTROL L-CH R-CH IC302 POWER AMP U201 RECTIFIER AMP AC INPUT TRANSFOR

48、MER Q1101 Q1102 TRANSFORMER RECTIFIER CD+8V IC412 +5V IC413 SD MAINPOWER 3.3V +9V TU-L TU-R TU+VCC FM MODULE FM ANT. RELAY JK402 HEADPHONE L.SPK OUTPUT R.SPK OUTPUT VCC AUX-L AUX-R AUX IN 2-2 Q1102 R1108 Q1101 FS1102 CN1103 CN1101 CN1104 RY1101 R1104 R1102 R1101 R1103 DGND C1110 D1107 C1112 C1113 D1

49、105 C1108 D1109 C1111 D1108 D1106 C1109 C1102 D1102 C1104 D1104 R1105 R1106 C1115 C1101 D1101 C1103 D1103 FS1101 C1114 C1107 PT1101 L1101 CN1102 Parts are safety assurance parts. When replacing those parts make sure to use the specified one. To Main section 3 CN402 Standard schematic diagrams 2-3 VC25 PH-MUTE LOV-TADA VOL-CLK CD_RX CD_TX CLOSE-DET R725 R783 R782 GND R739 R29 R767 R766 C708 C6 U1 GND IO IRQ RDS-DAT IIC-SCL IIC-SDA ST-BY PLL_RST IIC-SCL IIC-SDA EQ-SCL EQ-SDA CLOSE-DET R759 R750 R763R762 D407 D408 IC705