JVC-NXD7-cs-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2009 Victor Company of Japan, Limited No.MB711 2009/10 COMPACT COMPONENT SYSTEM MB711200910SERVICE MANUAL NX-D7UX, NX-D7UN, NX-D7EE, NX-D7UW, NX-D7UH, NX-D5UG, NX-D5UX, NX-D5UN, NX-D5EE, NX-D5UW, NX-D5UH COPYRIGHT 2009 Victor Company of Japan, Limited Lead free solder used i

2、n the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade) TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、 . . . . . . . . . . . . . 1-4 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、. . . . . . . . . . . . . . 1-8 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5、. . . . . . . . . . . . . . . . . . . 1-18 (for NX -D7)(for NX -D7/NX -D5) CA-NXD7 SP-NXD7F SP-NXD7W SP-NXD7F SP-NXD7F SP-NXD7F SP-NXD7W SP-NXD7W SP-NXD7W CA-NXD5 RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB711) SPECIFICATION Amplifier section Output PowerNX-D7MAIN SPEAKERS230 W (115 W + 115 W) at 3 (10% THD)

6、 SUBWOOFERS230 W (115 W + 115 W) at 3 (10% THD) NX-D5MAIN SPEAKERS230 W (115 W + 115 W) at 3 (10% THD) SUBWOOFERS115 W at 3 (10% THD) Audio InputAUDIO IN: Stereo mini ( 3.5 mm) 500 mV/47 k (at “AUDIO LVL3”) 250 mV/47 k (at “AUDIO LVL2”) 125 mV/47 k (at “AUDIO LVL1”) Digital Input/OutputOPTICAL DIGIT

7、AL OUTPUT (output only)-21 dBm to -15 dBm (660 nm 30 nm) NX-D7Bluetooth ADPT USB1:VIDEO/AUDIO PLAY (input only) USB2:AUDIO REC/PLAY (input and output) HDMI MONITOR OUT (output only) NX-D5USB: REC/PLAY (input and output) HDMI MONITOR OUT (output only) VIDEO OUTColor systemNTSC/PAL (interlaced/progres

8、sive) VIDEO (Composite)1 V(p-p)/75 COMPONENT(Y)1 V(p-p)/75 (PB/PR)0.7 V(p-p)/75 HDMI MONITOR OUT480p/576p/720p/1080i/1080p Speaker impedance3 - 16 Tuner section FM tuning range87.50 MHz - 108.00 MHz AM tuning range531 kHz - 1 710 kHz (at 9 kHz) 530 kHz - 1 710 kHz (at 10 kHz) Disc player section Reg

9、ion codesMiddle East2 South East Asia3 Central and South America, Australia4 Dynamic range80 dB Horizontal resolution500 lines Wow and flutterImmeasurable USB section Recording formatMP3/WMA format USB specificationCompatible with USB 2.0 Full Speed Compatible deviceMass storage class Compatible sys

10、temFAT16, FAT32 Bus power supplyDC 5 V 500 mA Bluetooth section (NX-D7) VersionBluetooth ver. 2.0 + EDR Class 1/Class 2 Compatible Bluetooth profile A2DP, AVRCP Communication format2.4 GHz FHSS HDMI section Output powerDC 5 V 55 mA RadioFans.CN 收音机爱 好者资料库 (No.MB711)1-3 Design and specifications are

11、subject to change without notice. General Power requirementsAC 110 - 127/220 - 240 V , 50/60 Hz For Australia: AC 240 V , 50 Hz, For Russia: AC 230V , 50 Hz Power consumptionNX-D7130 W (at operation)/21 W (at standby) /1 W or less (at ECO mode) NX-D585 W (at operation)/16 W (at standby) /1 W or less

12、 (at ECO mode) Dimensions (approx.)195 mm 333 mm 313 mm (W H D) Mass (approx.)3.5 kg Main Speaker Type3-way 3-speaker Bass Reflex Type (Magnetically-Shielded Type) Speaker unitsTweeter2.0 cm cone 1 Mid Range5.0 cm cone 1 Woofer16.0 cm cone 1 Impedance3 Power handling capacity115 W Frequency range40

13、Hz - 20 000 Hz Sound pressure level84 dB/W/m Dimensions (W H D)205 mm 409.5 mm 290.5 mm Mass3.6 kg each Subwoofer Type1-Way Bass Reflex Type (Magnetically-Shielded Type) Speaker units16.0 cm cone 1 Impedance3 Power handling capacity115 W Frequency range40 Hz - 5 000 Hz Sound pressure level83 dB/W/m

14、Dimensions (W H D)205 mm 409.5 mm 290.5 mm Mass3.5 kg RadioFans.CN 收音机爱 好者资料库 1-4 (No.MB711) 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 sho

15、uld 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. A

16、ny 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 pro

17、ducts 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 speci

18、al 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- t

19、eristics 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 par

20、ts 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 t

21、he 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 transforme

22、r 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-

23、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 pa

24、rt 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

25、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 t

26、o 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 B

27、urrs 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,

28、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

29、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 (No.MB711)1-5 1.5Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric,

30、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 electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser

31、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 plate over it before placing the traverse unit (optical pickup) on it. (2) Ground yourself U

32、se 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 laser diode on the replacement optical pickup are shorted. After replacement, return the sho

33、rted 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 diode. 1.6Handling the traverse unit (optical pickup) (1) Do not subject the traverse unit

34、(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 the replacement procedure in the text. Remove the anti-static pin when replacing the traver

35、se 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 semi-fixed resistor that adjusts the laser power. Do not turn it. 1.7Attention when traver

36、se 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. (If the card wire is disconnected without applying solder, the pickup may be destroyed by sta

37、tic 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 strap Solder short land section 1-6 (No.MB711) 1.8Important for laser products 1.CLASS 1 LASER

38、 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 instruments. 3.CAUTION : Visible and/or invisible laser radiation when open a

39、nd 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 drawer is open and the safety interlocks have failed or are defeated. It is

40、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 may result in hazardous radiation exposure. REPRODUCTION AND POSITION OF LABELS

41、 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 (No.MB711)1-7 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. 1-8 (No.MB711) SECTION 3 DIS

42、ASSEMBLY 3.1Main body (Used figure are NX-D7) 3.1.1Removing the Top cover (See Fig.1, 2 and 3) (1) Remove the five screws A and one screw B attaching the Side panel. (See Fig.1) Fig.1 (2) Remove the six screws C attaching the both side of the Side panel and then side to backward to remove the Side p

43、anel. (See Fig.2) Fig.2 (3) Disengage two hooks a engaged both side of the Top cov- er. (See Fig.3) Fig.3 3.1.2Removing the Rear panel (See Fig.4, 5) (1) Disconnect the card wire from Tuner pack connected to connector CN306 of the Main board. (See Fig.4) (2) Disconnect the connector wire from FAN co

44、nnected to con- nector CN303 of the Main board. (See Fig.4) Fig.4 AA B C hook a CN306 CN303 (No.MB711)1-9 (3) Remove the two screws D attaching the Main board. (See Fig.5) (4) Remove the one screw E attaching the DVD board. (See Fig.5) (5) Remove the two screws F attaching the Mecha chassis. (See Fi

45、g.5) (6) Remove the two screws G attaching the Amp board. (See Fig.5) (7) Remove the two screws H attaching the Voltage selector board. (See Fig.5) Fig.5 3.1.3Removing the Main board (See Fig.6) (1) Disconnect t the card wire from USB board connected to connector CN502 of the Main board. (2) Disconn

46、ect the card wires from Ripping module board con- nected to connectors CN305 and CN501 of the Main board. (3) Disconnect the card wire from Loader board connected to connector CN307 of the Main board. (4) Disconnect the connector wire from Power board connect- ed to connector CN180 of the Main board

47、. (5) Disconnect the card wire from DVD board connected to connector CN500 of the Main board. (6) Disconnect the card wire from Amp board connected to connector CN503 of the Main board. (7) Disconnect the card wires from DVD board connected to connectors CN310 and CN308 of the Main board. (8) Discon

48、nect the parallel wire from Amp board connected to connector CN181 of the Main board. (9) Disconnect the card wire from Mic board connected to con- nector CN304 of the Main board. (10) Disconnect the card wires from Front panel connected to connectors CN301 and CN312 of the Main board. (11) Disconne

49、ct the parallel wire from Front panel connected to connector CN315 of the Main board. (12) Remove the two screws J attaching the Main board. Fig.6 3.1.4Removing the DVD mechanism (See Fig.7, 8) (1) Disconnect the connector wire from USB board connected to connector CN811 of the DVD board. (See Fig.7) Fig.7 D E F H F G CN502 CN500 CN503 CN310 CN308 CN181 CN304 CN305 CN307 CN301 CN315 CN180 CN312 CN501 J J CN811 1-10 (No.MB711) (2) Disconnect the connector wire from USB board connected to connector CN801 of the Conne