Jvc-THA-9-Service-Manual电路原理图.pdf

SERVICE MANUALDVD DIGITAL THEATER SYSTEMNo.20926Mar. 2001COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.Printed in Japan200103(S)TH-A9No.20926Safety precautionsImportant for laser productsPreventing static electricityDismantling and assembling the treverse unitDisassembly methodDiscription of major IC's1-21-31-41-51-81-22Areas suffixJ - U.S.A.C - CanadaContentsRM-STHA9JDVD THEATER SYSTEMDVD MENUTUNING UPDOWNREC/REW FFPAUSESTROBEMEMORYTV/VIDEO MUTINGF.SEARCHB.SEARCHPLAYCHANNELTV VOL VOLUMESTOPDVDAUDIOTV/CATV/DBSSTANDBY/ONVCRDECODESUBTITLETITLE AUDIOTIMEDIGESTZOOMVCRTVSLEEPSETTINGTV RETURN FM MODE 100+AUDIO/TV/VCRCAT/DBSCONTROL SUBWOOFER EFFECTCENTER TESTREAR-RENTERPLAYMODETHEATERPOSITIONDSPMODEREAR-LDISPLAYCHOICEANGLERETURN SOUNDFM/AMAUXSP-PWA9 XV-THA9SP-XSA9SP-XSA9SP-XCA9VICTOR COMPANY OF JAPAN, LIMITEDAUDIO FUSE CAUTIONFOR CONTINUED PROTECTION AGAINST RISKOF FIRE, REPLACE ONLY WITH SAME TYPEAND RATING OF FUSES ;F901 : 1.6 A / 125 VF901 : 1.6 A / 125 VXV-THA9 C/J SEULEMENTMarquage Pour Le Remplacement Complet De FusiblePRECAUTIONS SUR LES FUSIBLESPOUR UNE PROTECTION CONTINUE CONTRE DES RISQUES D'INCENDIE, 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 ;Note : It's means “J“ for U.S.A. market model and “C“ for canada market model. Importance Admistering point on the Safety (XV-THA9)TH-A91-7SP-PWA9 C/J ONLYFull Fuse Replacement MarkingGraphic symbol mark (This symbol means fast blow type fuse.)should be read as follows ;FUSE CAUTIONFOR CONTINUED PROTECTION AGAINST RISKOF FIRE, REPLACE ONLY WITH SAME TYPEAND RATING OF FUSES ;F401 : 4A / 125 VF504 : 8A / 125 VF505 : 8A / 125 VSP-PWA9 C/J SEULEMENTMarquage Pour Le Remplacement Complet De FusiblePRECAUTIONS SUR LES FUSIBLESPOUR UNE PROTECTION CONTINUE CONTRE DES RISQUES D'INCENDIE, 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 ;Note : It's means “J“ for U.S.A. market model and “C“ for canada market model. Importance Admistering point on the Safety (SP-PWA9)F401 : 4A / 125 VF504 : 8A / 125 VF505 : 8A / 125 VTH-A91-8Remove the four screws A that retain the DVD door from the top of the unit.1.Removing the DVD door (See Fig.1) Prior to performing the following procedure, remove the DVD door.Remove the four screws (B) that attach the left and right side covers of the unit, from the bottom panel.Remove the left and right side covers by moving each of them in the direction of the corresponding arrow.1.2.Removing the right and left side covers (See Fig.2)Disassembly methodFig.1Fig.2DVD doorAABBRight side coverLeft side coverBottom panelTH-A91-9Prior to performing the following procedure, remove the left and right side covers.Also remove the DVD door.(Note) The mechanism slide switch for pickup protection should be set to the SHORTED position.Remove the three screws (C) that retain the front panel assembly, from the bottom panel of the unit.Remove four screws (D) that retain the DVD mechanism base, from the top of the unit.Remove the three screws (E) from the rear panel of the unit that retain the DVD mechanism base.Remove the DVD mechanism together with the front panel assembly by lifting them upward from the main unit and moving them toward the front.Disconnect the card wire of the DVD mechanism from the connector CN101 on the DVD servo board.Disconnect the wire of the LED board from the connector CN812 on the analog input/output board.Removing the front panel assembly and the DVD mechanism base(See Figs.3 to 7)1.2.3.4.5.Remove the front panel assembly and the DVD mechanism together, just as they were assembled.CDDBottom panelFront panel assemblyDVD mechanism baseFront panel assemblyFront panel assemblyDVD mechanism baseEEERear panelDVD mechanism baseAnalog I/O boardCN812Front panel assemblyDVD servo boardCN101DVD servo boardCN101DVD mechanism assemblyLED boardAnalog I/O boardCN812Fig.3Fig.4Fig.5Fig.6Fig.7TH-A91-10(Note)(Note)(Note)Prior to performing the following procedure, remove the left and right side covers.Also remove the DVD door.Remove the front panel assembly and the DVD mechanism base together from the main unit. (See Figs. 3 to 7.)On the back of the DVD mechanism base, disengage the four claws at the engaging points (a) that attach the front panel assembly to the DVD mechanism base, and then pull out the front panel assembly in the direction of the arrow to separate it from the DVD mechanism base. Separating the front panel assembly and the DVD mechanism base (See Fig.8)1.2.It is at this stage that the front panel assembly and the DVD mechanism base are separated from each other.Prior to performing the following procedure, remove the left and right side covers.Also remove the DVD door.Also separate the front panel assembly from the DVD mechanism base.Remove the five screws (F) that retain the display board.Removing the display board (See Fig.9)1.Prior to performing the following procedure, remove the left and right side covers.Also remove the DVD door.Remove the four screws (G) from the back of the DVD mechanism base that retain the DVD mechanism cover.Remove the DVD mechanism assembly from the DVD mechanism base.Removing the DVD mechanism assembly(See Figs.10 and 11)1.2.This work is possible even when the front panel assembly is attached to the DVD mechanism base.Prior to performing the following procedure, remove the left and right side covers.Also remove the DVD door.Remove two screws (H) that retain the LED board cover, from the back of the DVD mechanism base.Remove the LED board by pulling it away from the DVD mechanism base.Removing the LED board(See Figs.10 and 11)1.2.This work is possible even when the front panel assembly is attached to the DVD mechanism base.Fig.8Fig.9Fig.10Fig.11DVD mechanism baseEngaging points (a)Engaging points (a)Front panel assemblyDisplay boardFront panel assemblyFFLED board coverHHGGDVD mechanism coverDVD mechanism assemblyLED boardDVD mechanism assembly