JVC-NXF40-cs-sm维修电路原理图.pdf

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1、SERVICE MANUAL COPYRIGHT 2009 Victor Company of Japan, Limited No.MB695 2009/4 COMPACT COMPONENT SYSTEM MB69520094 SERVICE MANUAL NX-F30B, NX-F30E, NX-F30EN, NX-F40B, NX-F40E, NX-F40EN COPYRIGHT 2009 Victor Company of Japan, Limited Lead free solder used in the board (material : Sn-Ag-Cu, melting po

2、int : 219 Centigrade) Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade) TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPECIFIC SER

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

4、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15 C

5、A-NXF40SP-NXF40F CA-NXF30SP-NXF30F SP-NXF40F SP-NXF30F SP-NXF30W RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB695) SPECIFICATION Main unit (CA-NXF40/CA-NXF30) Designs and specifications are subject to change without notice. Tuner FM frequency87.50 MHz - 108.00 MHz Terminal (front of the main unit) USB digital

6、input terminal 1 Audio output headphone terminal 1Impedance16 - 1 k Terminal (rear of the main unit) Audio output speaker terminals 1 Left/right speakersOutput power220 W (55 W 4) at 3 (1 kHz/10% THD) Impedance3 - 16 SubwooferOutput power180 W at 6 (100 Hz/10% THD) Impedance6 - 16 Optical digital in

7、put terminal 1-23 dBm to -15 dBm Optical digital output terminal 1-23 dBm to -15 dBm Component video output terminals 1Y1.0 Vp-p, 75 terminated PB0.7 Vp-p, 75 terminated PR0.7 Vp-p, 75 terminated Composite video output terminal 11.0 Vp-p, 75 terminated Audio input terminals 1500 mV/47 k HDMI monitor

8、 output terminal 1 FM antenna terminal 1 USB Compatible with USB 2.0 Full-Speed Compatible deviceUSB mass storage class device Compatible file systemFAT16, FAT32 Output powerDC 5 V = 500 mA HDMI Output powerDC 5 V = 55 mA General Power sourceAC 230 V , 50 Hz Power consumption (in operation)100 W Pow

9、er consumption (on standby)1 W or less Dimensions (W H D) including projecting parts312 mm 95 mm 312.3 mm Mass3.5 kg Speakers (SP-NXF40F/SP-NXF30F) Type1-way bass reflex type Magnetically shielded type Speaker driverFront ch5.5 cm cone Surround ch5.5 cm cone Power handling capacityFront ch55 W Surro

10、und ch55 W Impedance3 Frequency range80 Hz - 20 kHz Sound pressure level77 dB/W/m Dimensions (W H D) including projection parts88 mm 203 mm 127 mm Subwoofer (SP-NXF30W) TypeBass reflex type Speaker driver16 cm cone Power handling capacity180 W Impedance6 Frequency range30 Hz - 200 Hz Sound pressure

11、level76 dB/W/m Dimensions (W H D)300 mm 301 mm 303 mm Mass8.2 kg RadioFans.CN 收音机爱 好者资料库 (No.MB695)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 c

12、hanges 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

13、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

14、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 t

15、hese 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

16、 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,

17、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 reas

18、sembling 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

19、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 lea

20、kage 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- pose

21、d 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

22、 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

23、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.

24、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

25、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

26、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.MB695) 1.5Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the bod

27、y, 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 electricity in the work area can destroy the optical pickup (laser diode) in devices suc

28、h 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 plate over it before placing the traverse unit (optical pickup) on it. (2) Ground

29、 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 laser diode on the replacement optical pickup are shorted. After replacement, ret

30、urn 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 diode. 1.6Handling the traverse unit (optical pickup) (1) Do not subject the tra

31、verse 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 the replacement procedure in the text. Remove the anti-static pin when replacing

32、 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 semi-fixed resistor that adjusts the laser power. Do not turn it. 1.7Attention

33、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 connecto on the servo board. (If the card wire is disconnected without applying solder, the pickup may be destro

34、yed 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 strap Solder short land section (No.MB695)1-5 1.8Important for laser products 1.CLAS

35、S 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 instruments. 3.CAUTION : Visible and/or invisible laser radiation wh

36、en 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 drawer is open and the safety interlocks have failed or are defeate

37、d. 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 may result in hazardous radiation exposure. REPRODUCTION AND POSITION

38、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.MB695) SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. SECTION 3 DISASSEM

39、BLY 3.1Main body (Used figure are NX-F30E) 3.1.1Removing the Top cover (See Fig.1 to 3) (1) Remove the six screws A attaching the Top and Right cov- er. (See Fig.1) Fig.1 (2) Remove the Volume knob and Source knob. (3) Remove the three screws B attaching the Right panel. (See Fig.2) Fig.2 (4) Slide

40、to frontward and then remove the Right panel. (5) Slide to backward and then remove the Side panel. (See Fig.3) Fig.3 (6) Slide to backward and then remove the Top cover. 3.1.2Removing the Front panel (See Fig.4 to 7) (1) Remove the three screws C attaching the Front panel. (See Fig.4) Fig.4 (2) Dis

41、connect the card wire from Main board connected to connector CN561 of the Front board. (See Fig.5) (3) Remove the three screws D attaching the Front panel. (See Fig.5) Fig.5 A A B C C hook a CN561 DD (No.MB695)1-7 (4) Disengage one hook a engaged bottom side of the Front panel. (See Fig.4) (5) Disen

42、gage two hooks b engaged both side of the Front panel. (See Fig.6) Fig.6 (6) Disconnect the card wire from main board connected to connector CN531 of the Touch sensor board. (See Fig.7) (7) Disconnect the card wire from Main board connected to connector CN302 of the Front jack board. (See Fig.7) (8)

43、 Disconnect the connector wire from Main boards connect- ed to connector CN301 of the DVD module board. (See Fig.7) Fig.7 3.1.3Removing the Top chassis (See Fig.8 to 10) (1) Disconnect the card wires from Amp board connected to connectors CN201 and CN202 of the Main board. (See Fig.8) (2) Disconnect

44、 the connector wire from Power supply unit con- nected to connector CN103 of the Amp board. (See Fig.8) (3) Disconnect the connector wire from Main board connected to connector CN104 of the Amp board. (See Fig.8) Fig.8 (4) Remove the nine screws E attaching the Top chassis. (see Fig.9) Fig.9 (5) Rem

45、ove the four screws F attaching the both side of the Top chassis. (See Fig.10) Fig.10 3.1.4Removing the Amp board (See Fig.11) (1) Remove the three screws G attaching the Heat sink. (2) Remove the four screws H attaching the Amp board. Fig.11 hook b CN531CN302 CN301 CN202CN104 CN201CN103 E F H G 1-8

46、 (No.MB695) 3.1.5Removing the Main board (See Fig.12, 13) (1) Disconnect the connector wire from FAN connected to con- nector CN461 of the Main board. (See Fig.12) (2) Disconnect the connector wire from Power supply unit con- nected to connector CN981 of the Main board. (See Fig.12) (3) Disconnect t

47、he card wires from DVD module board con- nected to connectors, CN481, CN661 and CN701 of the Main board. (See Fig.12) (4) Disconnect the card wire from Tuner pack connected to connector CN421 of the Main board. (see Fig.12) (5) Disconnect the card wire from Loader board connected to connector CN451

48、of the Main board. (See Fig.12) Fig.12 (6) Remove the four screws J attaching the Main board. (see Fig.13) Fig.13 3.1.6Removing the Rear panel (See Fig.14) (1) Remove the four screws K and one screw L attaching the Rear panel. Fig.14 3.1.7Removing the DVD mechanism (See Fig.15) (1) Remove the three

49、screws M attaching the DVD module board. (2) Remove the one screw N attaching the DVD mechanism. Fig.15 3.1.8Removing the Power supply unit (see Fig.16) (1) Remove the five screws P attaching the Power supply unit. Fig.16 CN451CN981CN701CN481 CN461CN661CN421 J KKL MN P P (No.MB695)1-9 3.1.9Removing the Front jack board (See Fig.17) (1) Remove the three screws Q attaching the Front jack board. Fig.17 3.1.10 Removing the Front board (See Fig.18) (1) Remove the six screws R attaching the Front board. Fig.18 Q R