JVC-XVNA70BK-cd-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LIMITED No.XA011 2003/10 DVD AUDIO/VIDEO PLAYER XA011200310 XV-NA70BK,XV-NA77SL TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2、. . . . . 1-3 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、 . . . . . 1-9 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、 . . . . . . . . . . 1-23 2 5 8 1 4 7 3 6 9 010+10 TITLE/ GROUP TV/VIDEO CANCELRETURNPAGE VOLVOL+ CH + CH VFPZOOM AMP VOL AUDIO fs/Rate 3D PHONIC SUB TITLEANGLE DIMMERREPEAT OPEN/ CLOSE TV1TV2TV3 TV4TV5TV6 TV7TV8TV9 TV-/-TV0MUTING TVDVD NEXTPREVIOUS SELECTCLEAR SLOW-SLOW+ T O P M E N U M E N U O N S

5、 C R E E N C H O I C E ENTER STANDBY/ON TVDVD PROGRESSIVE SCAN Area Suffix (XV-NA70BK) J - U.S.A. C - Canada Area Suffix (XV-NA77SL) J - U.S.A. C - Canada B - U.K. E - Continental Europe EN - Northern Europe EV - Eastern Europe EE - Russian Federation A - Australia UF - China UJ - U.S.A.Militaly US

6、- Singapore UW - Brazil,Mexico,Peru RadioFans.CN 收音机爱 好者资料库 1-2 (No.XA011) SPECIFICATION For U.S.A. Specifications and appearance are subject to change without prior notice. Manufactured under license from Dolby Laboratories. Dolby, MLP Lossless and the double-D symbol are trademarks of Dolby Labora

7、tories. DTS and DTS Digital Surround are registered trademarks of Digital Theater Systems, Inc. GeneralReadable discsDVD AUDIO, DVD VIDEO, DVD-R (Video format), DVD-RW (Video format/VR format), DVD-RAM (VR format), SVCD, Video CD, Audio CD (CD-DA), MP3/WMA format, JPEG, CD-R/RW (CD-DA, SVCD, Video C

8、D, MP3/WMA format, JPEG) Video formatREMOTE, 480i (Interlaced scan)/480p (Progressive scan) selectable OtherPower requirementsAC 120 V , 60 Hz Power consumption16 W (POWER ON), 2.0 W (STANDBY mode) Mass2.1 kg (4.7 lbs) Dimensions (W H D)435 mm 45 mm 270.5 mm (17-3/16 inch 2-13/16 inch 10-11/16 inch)

9、 Video outputsCOMPONENT (pin jacks)Y Output: 1.0 Vp-p (75 ) PB/PR Output: 0.7 Vp-p (75 ) VIDEO OUT (pin jack)1.0 Vp-p (75 ) S-VIDEO OUT (S jack)Y Output: 1.0 Vp-p (75 ) C Output: 286 mVp-p (75 ) Horizontal resolution500 lines or more Audio outputsANALOG OUT (pin jack)2.0 Vrms (10 k) DIGITAL OUT (COA

10、XIAL) 0.5 Vp-p (75 termination) DIGITAL OUT (OPTICAL)-21 dBm to -15 dBm (peak) Audio characteristics Frequency responseCD (sampling frequency 44.1 kHz):2 Hz to 20 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

11、 kHz):2 Hz to 44 kHz DVD (sampling frequency 192 kHz/176.4kHz):2 Hz to 88 kHz Dynamic range16 bit: More than 100 dB 20 bit/24 bit: More than 110 dB Wow and flutterUnmeasurable (less than 0.002%) Total harmonic distortion16 bit: less than 0.0018% 20 bit/24 bit: less than 0.0012% RadioFans.CN 收音机爱 好者资

12、料库 (No.XA011)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 changes should be made to the original design unless authorized in writing by the manuf

13、acturer. 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 alterati

14、ons 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 products have special safety-related characteristics. These characteris- tics a

15、re 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 special safety characteristics are identified in the Parts List of Ser- vice Manu

16、al. 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- teristics as the recommended replacement parts shown in the Parts List of Ser

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

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

19、f 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 transformer during this check. Plug the AC line cord directly into the AC outlet. Usin

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

21、ine 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 part and a known good earth ground. Measure the AC voltage across the resistor

22、 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 not

23、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 be mad

24、e 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 chassis. Th

25、erefore, 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 ( ), diode (

26、 ) 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 C version) Good earth ground Place this probe on each exposed metal part. AC

27、 VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15 F AC TYPE RadioFans.CN 收音机爱 好者资料库 1-4 (No.XA011) 1.5Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in

28、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 DVD players. Be careful to use proper grounding in the ar

29、ea 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 Use an anti-static wrist strap to release any static el

30、ectricity 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 shorted parts to their original condition. (Refer to the

31、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 (optical pickup) to strong shocks, as it is a sensitiv

32、e, 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 traverse unit. Be careful not to take too long a time when a

33、ttaching 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. 1M Conductive material (conductive sheet) or iron palate (caption) Anti-static

34、 wrist strap (No.XA011)1-5 1.7Importance administering point on the safety B104 B119 C670 C678 C680 C681 C683 C684 C853 C861 C902 C904 C905 C906 C907 C908 C913 C914 C918 C950 C951 C952 C953 C958 C965 C966 C967 C980 C981 CN651 CN861 CN862 R907 CN903 CN904 CP951 D851 D852 D901 D903 D904 D905 D951 D952

35、 D954 D955 D956 D957 D960 EP951 EP952 EP953 EP954 FC901 FC902 IC901 IC904 J601 J603 J851 L851 L852 L901 L951 L952 L953 L954 L955 P901 PC901 Q611 Q612 Q852 Q951 R691 R692 R693 R694 R655 R658 R662 R663 R664 R665 B601 R679 R680 R854 C850 B141 B221 R901 R902 R903 R904 R905 R906 R910 R912 R915 R951 R954

36、RA1 RA2 S601 S901 T901 X851 B407 B201 B105 B401 B402 B505 B213 B303 B113 B701 B507 B109 B501 B107 CN902 B112 B207 B111 B108 B116 CN901 B115 B210 B304 B404 B403 B120 B308 B502 B214 B310 B309 B311 B504 B312 B139 B313 B132 B126 B125 B124 B123 C955 B136 B405 B406 B305 B130 B129 B128 B127 B131 B307 B211

37、B133 B134 B306 B301 B202 B121 B702 B204 B137 B801 B302 B106 B506 B602 B205 B140 B135 B138 B122 C959 C963 C964 C988 C691 C693 C695 C672 C674 C676 B212 B209 B603 D953 B503 B802 B110 B114 B203 B206 B208 Full Fuse Replacement Marking Graphic symbol mark (This symbol means fast blow type fuse.) should be

38、 read as follows ; FUSE CAUTION FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE AND RATING OF FUSES ; F901 : 1.6 A / 125 VF901 : 1.6 A / 125 V Marquage Pour Le Remplacement Complet De Fusible PRECAUTIONS SUR LES FUSIBLES POUR UNE PROTECTION CONTINUE CONTRE DES RISQUES DINC

39、ENDIE, REMPLACER SEULEMENT PAR UN FUSIBLE DU MEME TYPE ; Le symbole graphique (Ce symbole signifie fusible de type a fusion rapide.) doit etre interprete comme suit ; 1-6 (No.XA011) 1.8Important for laser products 1.CLASS 1 LASER PRODUCT 2.DANGER : Invisible laser radiation when open and inter lock

40、failed or defeated. Avoid direct exposure to beam. 3.CAUTION : There are no serviceable parts inside the Laser 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 s

41、witches which prevent emission of radiation when the drawer is open and the safety interlocks have failed or 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 performanc

42、e of procedures other than those specified herein may result in hazardous radiation exposure. ! Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. REPRODUCTION AND POSITION OF LABEL and PRINT WARNING LABEL and PRINT CAUTION: Invisible lase

43、r radiation when open and interlock failed or defeated. AVOID DIRECT EXPOSURE TO BEAM. (e) ADVARSEL: Usynlig laser- strling ved bning, nr sikkerhedsafbrydere er ude af funktion. Undg udst- telse for strling (d) VARNING: Osynlig laser- strlning nr denna del r ppnad och sprren r urkopplad. Betrakta ej

44、 strlen. (s) VARO: Avattaessa ja suo- jalukitus ohitettaessa olet alttiina nkymttmlle lasersteilylle. l katso steeseen. (f) CAUTION: Invisible laser radiation when open and interlock failed or defeated. AVOID DIRECT EXPOSURE TO BEAM. (e) ADVARSEL: Usynlig laser- strling ved bning, nr sikkerhedsafbry

45、dere er ude af funktion. Undg udst- telse for strling (d) VARNING: Osynlig laser- strlning nr denna del r ppnad och sprren r urkopplad. Betrakta ej strlen. (s) VARO: Avattaessa ja suo- jalukitus ohitettaessa olet alttiina nkymttmlle lasersteilylle. l katso steeseen. (f) The inside of a chassis base

46、(No.XA011)1-7 1.9Precautions for Service 1.9.1Handling 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 not use a tester to e

47、xamine 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 the short land which i

48、s 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 adjustment. 1.9.2Destruction of Traverse Unit and Laser Pickup by Static Elect