Jvc-XVM-50-BK-Service-Manual电路原理图.pdf

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1、SERVICE MANUALDVD VIDEO PLAYERNo.A0008Jun. 2001COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.XV-M50BKXV-M50BKContentsSafety precautions - 1-2Preventing static electricity - 1-3Precautions for Service - 1-4Importance admistering pointon the safety - 1-5Disassembly method - 1-6Adjustment method - 1-21De

2、scription of major ICs - 1-25Area SuffixJ - U.S.A.C - CanadaDISCSELECTTV DVDPLAYMODE12356890 +1010743DPHONICTV/VIDEOCANCELSUBTITLEANGLETV1 TV2 TV3TV4 TV5 TV6TV7 TV8 TV9TV -/- TV0 MUTINGAUDIOTHEATERPOSITIONDIGESTPREVIOUS NEXTCLEARSTROBESLOW+SLOWTITLEMENUCHOICEENTERRM-SXVM50J REMOTE CONTROLCH+SELECTCH

3、-VOL+VOL-DISPLAYZOOMRETURNTV DVDSTANDBY/ONDISC TITLE CHAP RESUME THEATERDVDEACHSTANDBYSTANDBY/ONPAUSEPLAYSTOPSKIPDISC 3DISC 2DISC 1DISC 3DISC 2DISC 1321DOLBYD I G I T A LPLAY FUSE CAUTIONFOR CONTINUED PROTECTION AGAINST RISKOF FIRE, REPLACE ONLY WITH SAME TYPEAND RATING OF FUSES ;F901 : 1.6 A / 125

4、VF901 : 1.6 A / 125 VMarquage Pour Le Remplacement Complet De FusiblePRECAUTIONS SUR LES FUSIBLESPOUR 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

5、 comme suit ;Importance Admistering point on the Safety F901C902C904C905C906C907C908C909C913C914C915C916C918R953 C960C962B9113C964C965C966C969C973C963C978C979C982C984C987C989C992C995C996C997B9028B9029CN961CN981CP951CP952D901D902D903D904D908D910D911D950D951D952D953D954D956D957D960D970D972D973D974D991

6、EP951FC901FC902IC901IC951IC953K902K951K952K953L901L951L952L955L957L959P901PC901PC902Q951Q953CN971Q965Q966Q991R901R903R904R906R907R908R911R960R954R976R980T901B9207B9111B9206B9023B9024B9105B9106B9204B9026B9002B9104B9003B9011B9017B9014B9022R910B9021B9018B9013B9107R956B9201B9203B9010B9601B9101B9004C912B

7、9006B9102B9202B9016R957B9005B9012B9027C911B9025B9801K954B9007B9008B9019B9020B9031CN952CN951B9001B9301B9015HS901B9030B9501C974F901A11.6A/125VLEA10018-S1BXV-M50BK1-6Remove the two screws A attaching the top cover on the back of the body.Remove the four screws B attaching the top cover on both sides of

8、 the body.Pull the lower parts of the top cover sides and remove the top cover in the direction of the arrow.1.2.3.Disassembly methodRemoving the top cover (See Fig.1)Prior to performing the following procedure, remove the top cover.Disconnect the wire from connector CN971 on the power supply board.

9、Disconnect the card wire from connector CN703 on the system control board.Remove the three screws C attaching the front panel assembly on the bottom of the body.Release the joint a on the bottom and the two joints b on both sides of the body. Remove the front panel assembly toward the front.1.2.3.4.

10、Removing the front panel assembly (See Fig.2 to 5)Fig.1Fig.2Fig.3Fig.5Fig.4Top coverB 2B 2AFront panel assemblyCN971CN703Power supply boardSystem control boardCCCJoint aFront panel assemblyJoint bFront panel assemblyJoint bXV-M50BK1-7Prior to performing the following procedure, remove the top cover.

11、Remove the eleven screws D attaching the rear panel on the back of the body and detach the rear panel.1.Removing the rear panel (See Fig.6)Prior to performing the following procedure, remove the top cover and front panel assembly.Remove the one screw E.Disconnect the 9 pin wire from connector CN961

12、on the power supply board.Disconnect the card wire from connector CN601 on the video board.Disconnect the card wires from connector CN701 and CN702 on the system control board.Remove the four screws F attaching the DVD changer mechanism assembly. It is easy for removing the front panel assembly to r

13、emove the mechanism assembly though the mechanism assembly can be removed even in the state that the front panel assembly adheres. 1.2.3.4.5.Removing the DVD changer mechanism assembly(See Fig.7)Fig.6Fig.7DDD Rear panelFF FFDVD changer mechanism assemblyPower supply boardSystem control boardCN701Vid

14、eo boardCN601CN961CN702EXV-M50BK1-8Prior to performing the following procedure, remove the top cover.Disconnect the wire from connector CN971 on the power supply board (The wire is extending from the front panel assembly).Disconnect the 9 pin wire from connector CN961 on the power supply board (The

15、wire is extending from the DVD changer mechanism assembly).Disconnect the wire from connector CN951 and CN952 on the power supply board (The wire is extending from the system control board).Remove the screw D attaching the AC jack on the rear panel.Remove the two screws G attaching the power supply

16、board and detach the power supply board.1.2.3.4.5.Removing the power supply board(See Fig.8 and 9)GPower supply boardFront panel assemblyRear panelCN961CN951,CN952CN971Fig.8Fig.9DRear panelXV-M50BK1-9Prior to performing the following procedure, remove the top cover.Disconnect the card wire from conn

17、ector CN601 on the video board (The card wire is extending from the DVD changer mechanism assembly).Disconnect the wire from connector CN704 on the system control board (The wire is extending from the video board).Remove the three screws D attaching the video board on the rear panel. Pull out the vi

18、deo board from the rear panel.1.2.3.Removing the video board(See Fig.10 and 11)Prior to performing the following procedure, remove the top cover.The system control board can be removed even if the video board is attached.Disconnect the card wire from connector CN703 on the system control board (The

19、card wire is extending from the front panel assembly).Disconnect the card wire from connector CN701 and CN702 on the audio board (The card wires are extending from the DVD changer mechanism assembly).Disconnect the wire from connector CN704 on the system control board (The wire is extending from the

20、 video board).Disconnect the wire from connector CN951 and CN952 on the power supply board (The wire is extending from the system control board).Remove the screw H attaching the system control board.Remove the four screws D attaching the system control board on the rear panel. Pull out the system co

21、ntrol board toward the front.1.2.3.4.5.6.Removing the system control board(See Fig.12 and 13)Front panel assemblyRear panelVideo boardSystem controlboardCN601CN704Fig.10Fig.11Fig.12Fig.13Rear panelRear panelDFront panel assemblyRear panelVideo boardSystem control boardCN704CN701CN703 CN702HPower sup

22、ply boardCN951,CN952DXV-M50BK1-10Remove the two screws I on the back of the front panel assembly and remove the bracket from the front panel assembly.Remove the seven screws J attaching the front board.If necessary, unsolder FW803 and disconnect the wire.1.2.Prior to performing the following procedu

23、re, remove the top cover and the front panel assembly.Removing the front board (See Fig.14 and 15)Remove the two screws K on the back of the front panel assembly.If necessary, unsolder FW803 and disconnect the wire.1.Removing the STANDBY switch board (See Fig.16)Fig.14Fig.15Fig.16Front boardFront panel assemblyBracketJJISTANDBY switch boardKIFront boardJFW803FW803