JVC-UXF2-cs-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2010 Victor Company of Japan, Limited No.MB736 2010/6 MICRO COMPONENT SYSTEM MB73620106 SERVICE MANUAL UX-F2BE, UX-F2BEN, UX-F2BEV, UX-F2BUS, UX-F2BUW COPYRIGHT 2010 Victor Company of Japan, LimitedLead free solder used in the board (material : Sn-Ag-Cu, melting point : 219

2、Centigrade) TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、 . . . . . . . . . . . . . . 1-7 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、. . . . . . . . . . . . . . . . . . . . . . . 1-10 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 2 SP-UXF2B SP-UXF2BCA-UXF2B only for Europe RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB736) SPECIFICATION

5、Design and specifications are subject to change without notice. For Europe(Main unit CA-UXF2B) General Power sourceAC 230 V , 50 Hz Power consumption (at operation)40 W Power consumption (on standby)1.00 W or less Dimensions (approx.) (W x H x D) (including projecting parts) 236 mm 123 mm 285 mm Mas

6、s (approx.)2.0 kg Amplifier Output Power100 W (50 W + 50 W) at 6 (10% THD) Audio InputAUDIO IN: Stereo mini ( 3.5 mm) Speaker impedance6 - 16 Tuner FM frequency87.50 MHz - 108.00 MHz USB USB specificationCompatible with USB 2.0 Full Speed Compatible deviceMass storage class Compatible systemFAT16, F

7、AT32 Output powerDC 5 V 500 mA SD Compatible deviceSD, SDHC Compatible systemFAT16, FAT32 Speaker SP-UXF2B Speaker typeBass-reflex type Tweeter4 cm Woofer12 cm Impedance6 Dimensions (approx.) (W x H x D) (including projecting parts) 141 mm 250 mm 181 mm Mass (approx.)1.8 kg each RadioFans.CN 收音机爱 好者

8、资料库 (No.MB736)1-3 SPECIFICATION Design and specifications are subject to change without notice. For Asia(Main unit CA-UXF2B) General Power sourceAC 110 - 127 V/AC 220 - 240 V (adjustable with the voltage selector), 50 Hz/60 Hz Power consumption (at operation)40 W Power consumption (on standby)1.00 W

9、 or less Dimensions (approx.) (W x H x D) (including projecting parts) 236 mm 123 mm 285 mm Mass (approx.)2.0 kg Amplifier Output Power100 W (50 W + 50 W) at 6 (10% THD) Audio InputAUDIO IN: Stereo mini ( 3.5 mm) Speaker impedance6 - 16 Tuner FM frequency87.50 MHz - 108.00 MHz AM frequency531 kHz -

10、1 710 kHz (at 9 kHz intervals) 530 kHz - 1 710 kHz (at 10 kHz intervals) USB USB specificationCompatible with USB 2.0 Full Speed Compatible deviceMass storage class Compatible systemFAT16, FAT32 Output powerDC 5 V 500 mA SD Compatible deviceSD, SDHC Compatible systemFAT16, FAT32 Speaker SP-UXF2B Spe

11、aker typeBass-reflex type Tweeter4 cm Woofer12 cm Impedance6 Dimensions (approx.) (W x H x D) (including projecting parts) 141 mm 250 mm 181 mm Mass (approx.)1.8 kg each RadioFans.CN 收音机爱 好者资料库 1-4 (No.MB736) SECTION 1 PRECAUTION 1.1Safety Precautions (1) This design of this product contains special

12、 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 used in the original circuits. Services should be per-

13、 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 and will further relieve the manufacture of responsibi

14、lity 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 protection afforded by them necessarily be obtained

15、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 identified by shading on the schematics and by ( ) on the

16、 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) The leads in the products are routed and dressed w

17、ith 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

18、 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, screw heads, headphone jack, control shafts, etc.)

19、 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, partic

20、ular- 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 voltmeter having, 1,000 per volt or more sensitivity in the

21、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 each exposed metal part, particularly any exposed me

22、tal 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 (r.m.s.). 1.2Warning (1) This equipment has been de

23、signed 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

24、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- forming repair of this system. 1.4Critical parts fo

25、r 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 critical for safety. When replacing them, be sure to use

26、 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) 1500 10W 0.15 F AC TYPE (No.MB736)1-5 1.5Preventing

27、 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 repairs. 1.5.1 Grounding to prevent damage by static el

28、ectricity 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 workbench by laying conductive material (such as a condu

29、ctive 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 maintain quality during transport and before installa

30、tion, 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 optical pickup. The testers internal power source can

31、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 nippers, etc. after replacing the optical pickup. For sp

32、ecific 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 may break when subjected to strong force. (4) I t is n

33、ot possible to adjust the 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 connect

34、or on the servo board. (If 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 (capti

35、on) Anti-static wrist strap solder short part 1-6 (No.MB736) 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

36、not view directly with optical 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

37、 emission of radiation when the 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

38、than those specified here in may 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 (No.MB736)1-7 SECTION 2 SPECIFIC SERVICE IN

39、STRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. SECTION 3 DISASSEMBLY 3.1Main body (Used model: UX-F2E) 3.1.1Removing the Top cover (See Fig.1, 2, 3) (1) Remove the four screws A attaching the Top cover. (See Fig.1) Fig.1 (2) Remove the two screws B and two screws C a

40、ttaching both side of the Top cover. (See Fig.2) Fig.2 (3) Remove the three screws D and three screws E attaching the Top cover. (See Fig.3) Fig.3 3.1.2Removing the Main board (See Fig.4) (1) Disconnect the connector wire from Jack board connected to connector CN606 of the Main board. (2) Disconnect

41、 the connector wire from FAN connected to con- nector CN612 of the Main board. (3) Disconnect the card wire from Upgrade board connected to connector CN605 of the Main board. (4) Disconnect the connector wire from SMPS board connect- ed to connector CN603 of the Main board. (5) Disconnect the card w

42、ire from MPEG board connected to connector CN609 of the Main board. (6) Disconnect the connector wire from MPEG board connect- ed to connector CN607 of the Main board. (7) Disconnect the connector wire from SMPS board connect- ed to connector CN601 of the Main board. (8) Disconnect the card wire fro

43、m Display board connected to connector CN602 of the Main board. (9) Disconnect the card wire from Tuner pack connected to connector CN604 of the Main board. (10) Remove the five screws F attaching the Main board. Fig.4 AA B C D E F F F F F CN606 CN605CN604 CN612CN603 CN609 CN607 CN601 CN602 1-8 (No.

44、MB736) 3.1.3Removing the SMPS board (See Fig.5, 6) (1) Disconnect the connector wire from Display board connect- ed to connector CN902 of the SMPS board. (See Fig.5) Fig.5 (2) Remove the two screws G, one screw H and one screw J attaching the SMPS board. (See Fig.6) Fig.6 3.1.4Removing the CD mechan

45、ism (See Fig.7, 8, 9, 10, 11) (1) Remove the one screw K and one screw L attaching the Rear cabinet bracket. (See Fig.7) Fig.7 (2) Remove the two screws M and two screws N attaching the CD mechanism. (See Fig.8) Fig.8 (3) Disconnect the connector wire from MPEG board connect- ed to connector of Load

46、er board. (See Fig.9) Fig.9 (4) Solder the short part of the Pickup board. (See fig.10) Fig.10 (5) Disconnect the card wire from CD mechanism connected to connector CN102 of the MPEG board. (See Fig.11) Fig.11 CN902 G HJ K L M N M N Loader boardconnector solder short part CN102 (No.MB736)1-9 3.1.5Re

47、moving the MPEG board (See Fig.12) (1) Disconnect the card wire from USB board connected to connector CN108 of the MPEG board. (2) Remove the four screws P attaching the MPEG board. Fig.12 3.1.6Removing the Front panel (See Fig.13, 14) (1) Disengage one hook a engaged Front panel. (See Fig.13) Fig.1

48、3 (2) Disengage two hooks b engaged both side of the Front panel. (See Fig.14) Fig.14 3.1.7Removing the Jack board (See Fig.15) (1) Remove the two screws Q attaching the Jack board. Fig.15 3.1.8Removing the USB board (See Fig.16) (1) Disconnect the connector wire from Display board connect- ed to co

49、nnector CN203 of the USB board. (2) Remove the two screws R attaching the USB board. Fig.16 3.1.9Removing the Display board (See Fig.17) (1) Remove the twelve screws S attaching the Display board. Fig.17 CN108 P P P hook a hook b Q R CN203 S S S S 1-10 (No.MB736) SECTION 4 ADJUSTMENT This service manual does not describe ADJUSTMENT. SECTION 5 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING. (No.MB736)1-11 (No.MB736) VSE Printed in Japan Victor Company of Japan, Limited Home Entertainment Business Divisi