JVC-XVC5SL-cd-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD. No.XA001 2003/5 DVD VIDEO PLAYER XA00120034 XV-C5SL TABLE OF CONTENTS 1Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2Disassembly met

2、hod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、 . . 16 4Description of major ICs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 TV2 2 TV1 1 TV3 3 TV5 5 TV4 4 TV6 6 TV8 8 TV7 7 TV9 9 TV0 0 TV-/- 10 MUTING +10 VFPZOOM AUDIO DIMMER SUB TITLE REPEAT ANGLE 3D PHONIC

4、AMP VOL EJECT DISPLAY TVDVD NEXTPREVIOUS SELECTCLEAR SLOW SLOW + CH + CH ENTER STANDBY/ON TVDVD RETURN VOLVOL+ TITLE/ GROUP TV/VIDEO CANCEL T O P M E N U M E N U O N S C R E E N C H O I C E Area Suffix B - U.K. E - Continental Europe EN - Northern Europe EV - Eastern Europe EE - Russian Federation U

5、S - Singapore UG - Turkey,South Africa,Egypt UB - Hong Kong RadioFans.CN 收音机爱 好者资料库 1-2 (No.XA001) SPECIFICATION Specifications and appearance are subject to change without prior notice. Manufactured under license from Dolby Laboratories. Dolby and the double-D symbol are trademarks of Dolby Laborat

6、ories. Con- fidential unpublished works. Manufactured under license from Digital Theater Systems, Inc. DTS, DTS Digital Surround, are trademarks of Digital Theater Systems, Inc. Digital output signal chart GeneralReadable discsDVD VIDEO, DVD-R (Video format),DVD-RW (Video format), +RW(Video format),

7、 SVCD, Video CD,Audio CD (CD-DA), MP3 format,JPEG, CD-R/ RW (CD-DA, SVCD,Video CD, MP3 format, JPEG) Video formatPAL OtherPower requirementsAC 230 V , 50 Hz Power consumption12 W (POWER ON), 0.7 W (STANDBY mode) Mass1.7 kg Dimensions (W x H x D)218 mm x 58 mm x 270 mm Video outputsVIDEO OUT (pin jac

8、k)1.0 Vp-p (75 ) Horizontal resolution500 lines or more RGB700 mVp-p (75 ) Audio outputsANALOG OUT (pin jack)2.0 Vrms (10 k) DIGITAL OUT (COAXIAL)0.5 Vp-p (75 termination) DIGITAL OUT (OPTICAL)-21 dBm to -15 dBm (peak) Audio characteristicsFrequency responseCD(sampling frequency 44.1 kHz):2 Hz to 20

9、 kHz DVD(sampling frequency 48 kHz):2 Hz to 22 kHz (4 Hz to 20 kHz for DTS and Dolby Digital bitstream signals) DVD(sampling frequency 96 kHz):2 Hz to 44 kHz Dynamic range16 bit: More than 98 dB 20 bit: More than 100 dB 24 bit: More than 100 dB Wow and flutterUnmeasurable (less than + 0.002%) Total

10、harmonic distortionless than 0.006% Disc type Output PCM ONLYDOLBY DIGITAL/PCMSTREAM/PCM DVD with 48 kHz 16/20/24 bit linear PCM48 kHz 16 bit stereo linear PCM DVD with 96 kHz 16/20/24 bit linear PCM48kHz 16 bit stereo linear PCM (Down sampling) DVD with DTSNo outputDTS bitstream DVD with Dolby Digi

11、tal48 kHz 16 bit stereo linear PCMDolby Digital bitstream DVD with MPEG Multichannel48 kHz 16 bit stereo linear PCMMPEG bitstream SVCD/Video CD/Audio CD44.1 kHz 16 bit stereo linear PCM Audio CD with DTSNo outputDTS bitstream CD-R/RW with MP3Linear PCM RadioFans.CN 收音机爱 好者资料库 (No.XA001)1-3 SECTION 1

12、 Important Safety Precautions 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 should be made to the original design unless authorized in writing by the manufacturer.

13、 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. Any design alterations of the product should not be made. Any design alterations or a

14、dditions 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 products have special safety-related characteristics. These characteris- tics are often

15、 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 special safety characteristics are identified in the Parts List of Ser- vice Manual. Elec

16、trical 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- teristics as the recommended replacement parts shown in the Parts List of Service Man

17、ual 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 parts and/or sharp edges for the prevention of electric shock and fire hazard. When ser

18、vice 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 the product, always perform an isola- tion check on the exposed metal parts of the p

19、roduct (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 transformer during this check. Plug the AC line cord directly into the AC outlet. Using a Lea

20、kage 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- rent must not exceed 0.5mA AC (r.m.s.). Alternate check method Plug the AC line cor

21、d directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more sensi- tivity in the following manner. Connect a 1,500 ohm 10W resistor paralleled by a 0.15 F AC-type capacitor be- tween an exposed metal part and a known good earth ground. Measure the AC voltage across the res

22、istor 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 in the AC outlet and repeat each measurement. Voltage measured any must

23、 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 to ensure that these safety standards are maintained. (3) Repairs must b

24、e 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 Burrs formed during molding may be left over on some parts of the chassi

25、s. 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, the parts that are printed over with black such as the resistor ( ), di

26、ode ( ) 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. (Except the JC version) RadioFans.CN 收音机爱 好者资料库 1-4 (No.XA001) 1.5Preventing static electricity Electrostatic disc

27、harge (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 electricity in the wo

28、rk area can destroy the optical pickup (laser diode) in devices such as DVD players. 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 bef

29、ore 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 laser diode on th

30、e 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 diode. 1.6Handli

31、ng 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 the replacement

32、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 semi-fixed resi

33、stor that adjusts the laser power. Do not turn it. (No.XA001)1-5 1.7Important for laser products (1) CLASS 1 LASER PRODUCT (2) DANGER : Invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure to beam. (3) CAUTION : There are no serviceable parts inside the Laser

34、Unit. Do not disassemble the Laser Unit. Replace the complete Laser Unit if it malfunctions. (4) CAUTION : The compact disc player uses 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

35、are de feated. 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 herein may result in hazardous radiation exposure. CAUTION Ple

36、ase use enough caution not to see the beam directly or touch it in case of anadjustment or operation check. VARNING Osynlig laserstrlning r denna del r ppnad och sprren r urkopplad. Betrakta ej strlen. VARO Avattaessa ja suojalukitus ohitettaessa olet alttiina nkymt- tmlle lasersteilylle. l katso st

37、eeseen. ADVARSEL Usynlig laserstrling ved bning, nr sikkerhedsafbrydere er ude af funktion. Undg udsasttelse for strling. ADVARSEL Usynlig laserstrling ved pning, nr sikkerhetsbryteren er avs- lott. unng utsettelse for strling. REPRODUCTION AND POSITION OF LABEL and PRINT WARNING LABEL and PRINT CLA

38、SS 1 LASER PRODUCT 1-6 (No.XA001) 1.8Precautions for Service 1.8.1Handling of Traverse Unit and Laser Pickup (1) Do not touch any peripheral element of the pickup or the actuator. (2) The traverse unit and the pickup are precision devices and therefore must not be subjected to strong shock. (3) Do n

39、ot use a tester to examine the laser diode. (The diode can easily be destroyed by the internal power supply of the tester.) (4) To replace the traverse unit, pull out the metal short pin for protection from charging. (5) When replacing the pickup, after mounting a new pickup, remove the solder on th

40、e short land which is provided at the center of the flexible wire to open the circuit. (6) Half-fixed resistors for laser power adjustment are adjusted in pairs at shipment to match the characteristics of the optical block. Do not change the setting of these half-fixed resistors for laser power adju

41、stment. 1.8.2Destruction of Traverse Unit and Laser Pickup by Static Electricity Laser diodes are easily destroyed by static electricity charged on clothingor the human body. Before repairing peripheral elements of the traverse unit or pickup, be sure to take the following electrostatic protection:

42、(1) Wear an antistatic wrist wrap. (2) With a conductive sheet or a steel plate on the workbench on which the traverse unit or the pick up is to be repaired, ground the sheet or the plate. (3) After removing the flexible wire from the connector (CN101), short-circuit the flexible wire by the metal c

43、lip. (4) Short-circuit the laser diode by soldering the land which is provided at the center of the flexible wire for the pickup. After completing the repair, remove the solder to open the circuit. Short circuit CN101 DVD Servo control board Flexible wire CN202 CN201 DVD Mechanism (No.XA001)1-7 1.9C

44、aution on disassembly of the main body The power supply board is a board at the power supply first level. Since the pattern side of this board is not covered with anything after removing the bottom cover of the main body, be sure to pull out the power cord from the wall socket before disassembly and

45、 assembly procedure. If turning the power on without the bottom cover, be careful enough not to touch the power supply board. Power supply board 1-8 (No.XA001) SECTION 2 Disassembly method There is a part different from the photograph according to the destination though explains this disassembly met

46、hod by using XV- C5SL for Eastern Europe. 2.1Main body section 2.1.1Removing the bottom cover (See Figure 1, Figure 2) (1) Remove the three rubber caps on the bottom of the main body. *Remove the rubber caps by peeling them with your nails because they are only inserted in the holes. (See Figure 2)

47、(2) Remove the three screws A (long) and one screw B (short) attaching the bottom cover on the bottom of the main body. (3) Lift the bottom cover, and remove it. Fig.1 Fig.2 Rubber cap and screw A Bottom cover A Rubber cap and screw BRubber cap and screw A Side fitting L Rubber cap (No.XA001)1-9 2.1

48、.2Removing the mechanism assembly (See Figure 3, Figure 4, Figure 5) Prior to the following procedure, remove the bottom cover. (1) Remove the four screws C attaching the bottom plate. (2) Disconnect the flat wire from the connector CN811 on the servo control board. (3) Disconnect the connector wire

49、 from the connector CN802 on the FL display board. (4) Remove the main body from the top cover. (5) Remove the three screws D attaching the mechanism as- sembly. (6) Disconnect the connector wires from the connector CN501 and CN502 on the servo control board. (7) Disconnect the card wire from the connector CN611 on the servo control board. Fig.3 Fig.4 Fig.5 Side fitting L Bottom plate C C C Side fitting R Top cover Servo control board FL Display board CN811 CN802 CN611 D D CN501CN502 D Servo