JVC-XVM5GSL-cs-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LIMITED No.XA008 2003/7 DVD VIDEO PLAYER XA00820036 XV-M5GSL TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPEC

2、IFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 4ADJ

3、USTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20 5TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、. 1-26 Area Suffix J - U.S.A. C - Canada 2 5 8 1 4 7 3 6 9 010+10 TITLE/ GROUP TV/VIDEO CANCELRETURN VOL VOL+ CH + CH VFPZOOM AMP VOL AUDIO 3D PHONIC SUB TITLEANGLE DIMMERREPEAT OPEN/ CLOSE DISC SELECT TV1TV2TV3 TV4TV5TV6 TV7TV8TV9 TV-/-TV0MUTING TVDVD NEXTPREVIOUS SELECTCLEAR SLOW-SLOW+ T O P M E N

5、 U M E N U O N S C R E E N C H O I C E ENTER STANDBY/ON TVDVD PROGRESSIVE SCAN V I D E O RadioFans.CN 收音机爱 好者资料库 1-2 (No.XA008) SPECIFICATION General Other Video outputs Audio outputs Audio characteristics Specifications and appearance are subject to change without prior notice. Manufactured under l

6、icense from Dolby Laboratories. Dolby and the double-D symbol are trademarkes of Dolby Laboratories. DTS and DTS Digital Out are trademarks of Digital Theater Systems, Inc. Digital output signal chart Readable discsDVD VIDEO, DVD-R (Video format), DVDRW (Video format), +RW (Video format), SVCD, Vide

7、o CD, Audio CD (CD-DA), MP3/WMA format, JPEG, CD-R/RW (CD-DA, SVCD, Video CD, MP3/WMA format, JPEG) Video formatNTSC, 480i (Interlaced scan)/480p (Progressive scan) selectable Power requirementsAC 120 V, 60 Hz Power consumption12 W (POWER ON) 0.8 W (STANDBY mode) Mass4.2 kg (9.3 lbs) Dimensions (W x

8、 H x D)435mm x 83mm x 322mm (17-3/16 inch x 3-5/16 inc x 12-11/16 inch) COMPONENT (pin jacks)Y Output: 1.0 Vp-p (75 ohm) Pb/Pr Output: 0.7Vp-p (75 ohm) VIDEO OUT (pin jack)1.0 Vp-p (75 ohm) S-VIDEO OUT (S jack)Y Output: 1.0 Vp-p (75 ohm) C Output: 286 mVp-p (75 ohm) Horizontal resolution500 lines or

9、 more ANALOG OUT (pin jack)2.0 Vrms (10 kohm) DIGITAL OUT (COAXIAL)0.5 Vp-p (75 ohm termination) DIGITAL OUT (OPTICAL)-21 dBm to -15 dBm (peak) 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 b

10、itstream 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 harmonic distortionless than 0.006% Disc typeOutput PCM ONLYDOLBY DIGITAL/PCMSTREAM/PCM DVD wit

11、h 48/44.1 kHz, 16/20/24 bit linear PCM 48/44.1 kHz, 16 bit, stereo linear PCM DVD with 96 kHz, 16/22/24 bit linear PCM 48kHz, 16 bit, stereo linear PCM (Down sampling) DVD with DTS48kHz, 16bit, stereo linear PCMDTS bitstream DVD with Dolby Digital48 kHz, 16 bit, stereo linear PCMDolby Digital bitstr

12、eam DVD with MPEG Multichannel 48kHz, 16 bit, stereo linear PCMMPEG bitstream SVCD/Video CD/Audio CD44.1 kHz, 16 bit, stereo linear PCM Audio CD with DTS48kHz, 16bit, stereo linear PCMDTS bitstream CD-R/RW with MP3/WMALinear PCM RadioFans.CN 收音机爱 好者资料库 (No.XA008)1-3 SECTION 1 PRECAUTION 1.1Safety Pr

13、ecautions (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. Replacement parts must be identical to th

14、ose 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 additions will void the manufacturers warra

15、nty 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 not evident from visual inspection nor ca

16、n 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. Electrical components having such features are

17、 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 Manual may create shock, fire, or other hazar

18、ds. (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 service is required, the original lead routin

19、g 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 product (an- tenna terminals, knobs, metal

20、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 Leakage Current Tester, measure the leakage c

21、urrent 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 cord directly into the AC outlet. Use an AC v

22、oltmeter 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 resistor with the AC voltmeter. Move the resi

23、stor 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 exceed 0.75 V AC (r.m.s.). This corre

24、sponds 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 made in accordance with the relevant saf

25、ety 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. Therefore, pay attention to such burrs

26、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 ( ) and ICP ( ) or identified by the m

27、ark 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.XA008) 1.5Preventing static electricity Electrostatic discharge (ESD), which occurs when static elec

28、tricity 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 work area can destroy the optical pickup (la

29、ser 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 before placing the traverse unit (optical pic

30、kup) 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 the replacement optical pickup are shorted.

31、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. 1.6Handling the traverse unit (optical pickup) (1)

32、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 procedure in the text. Remove the anti-sta

33、tic 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 resistor that adjusts the laser power. Do not

34、turn it. (No.XA008)1-5 1.7Importance admistering point on the safety JT901 JT902 JT903 JT904 B922 EP952 C902 C904 C905 C907 C908 C913 C914 C918 C950 C951 C952 C953 C955 C957 C958 C959 C963 C964 C965 C966 C967 C970 C973 C988 CP951 C916 D901 D902 D903 D951 D952 D953 D954 D955 D956 D957 D960 EP951 FC90

35、1 FC902 B910 B920 IC901 IC952 B911 B912 L901 L951 L952 L953 L954 L955 P901 PC901 B913 B914 B902 B907 Q951 Q953 B909 B906 B908 B921 B918 B919 WC901 B915 B916 B917 B923 B926 B927 B925 B924 R901 R903 R906 R910 R912 R913 R915 R951 R954 T901 EP910 D904 B903 B904 B905 Full Fuse Replacement Marking Graphic

36、 symbol mark (This symbol means fast blow type fuse.) should be 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 LE

37、S FUSIBLES POUR UNE PROTECTION CONTINUE CONTRE DES RISQUES DINCENDIE, 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.XA008) 1.8Precautions for Service 1.8.1Handling of Traverse Un

38、it 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 examine the laser diode. (The diode can easily be destroyed by the int

39、ernal 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 is provided at the center of the flexible wire to open the circuit. (6

40、) 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. 1.8.2Destruction of Traverse Unit and Laser Pickup by Static Electricity Laser di

41、odes 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: (1) Wear an antistatic wrist wrap. (2) With a conductive sheet or a steel plate on the wo

42、rkbench 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 clip. (4) Short-circuit the laser diode by soldering the land which is provided at the cen

43、ter of the flexible wire for the pickup. After completing the repair, remove the solder to open the circuit. CN101 Servo control board Short circuit Short circuit *Please refer to the disassembly method for detailes. (No.XA008)1-7 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not

44、describe SPECIFIC SERVICE INSTRUCTIONS. 1-8 (No.XA008) SECTION 3 DISASSEMBLY 3.1Main body section 3.1.1Removing the top cover (See Figure 1) (1) Remove the four screws A attaching the top cover on both sides of the main body. (2) Remove the two screws B attaching the top cover on the back of the mai

45、n body. (3) Raise the both sides and lower part of the rear of the top cover, with opening them slightly in an outward direction. And the top cover will be removed. Fig.1 3.1.2Removing the front panel assembly (See Figure 2, Figure 3, Figure 4) Prior to performing the following procedure, remove the

46、 top cover. There is no need to remove the mechanism assembly. (1) Disconnect the flat wire from connector JT901, JT902 on the power supply board. (2) Disconnect the card wire from connector CN501, CN702 on the servo control board and signal output terminal board respectively. (3) Remove the three s

47、crews C attaching the front panel as- sembly on the bottom of the main body. (4) Hook a and b are removed respectively, and the front panel assembly is removed. 3.1.3Removing the changer mechanism assembly (See Figure 2, Figure 4) Prior to performing the following procedure, remove the top cover. Th

48、ere is no need to remove the front panel assembly. (1) Disconnect the card wire from connector CN501, CN502, CN503 on the servo control board. (2) Remove the four screws D attaching the changer mecha- nism assembly. Fig.2 Fig.3 Fig.4 B B A x 2 A x 2 TOP COVERTOP COVERTOP COVER Power supply board JT9

49、01,JT902D Signal output terminal board CN702 D DD Hook a Hook a Hook b Hook b Front panel assembly C C C Mechanism assemblyServo control boardCN502 CN501CN503 (No.XA008)1-9 3.1.4Removing the servo control board (See Figure 5) Prior to performing the following procedure, remove the chang- er mechanism assembly. (1) Disconnect the card wire from connector CN101, CN103, CN104, CN105, CN201 on the servo control board. ATTENTION : At this