Sony TRINITRON KV-27V20 Service Manual page 4

TABLE OF CONTENTS
(CAUTION)
SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND THE
ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR CARBON
PAINTED ON THE CRT, AFTER REMOVING THE ANODE.
WARNING!!
AN ISOLATION TRANSFORMER SHOULD BE USED DURING ANY
SERVICE TO AVOID POSSIBLE SHOCK HAZARD, BECAUSE OF
LIVE CHASSIS.
THE CHASSIS OF THIS RECEIVER IS DIRECTLY CONNECTED TO
THE AC POWER LINE.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK A ON THE
SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE PARTS
LIST ARE CRITICAL FOR SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT ARE
CRITICAL FOR SAFE OPERATION ARE IDENTIFIED IN THIS
MANUAL. FOLLOW THESE PROCEDURES WHENEVER CRITICAL
COMPONENTS ARE REPLACED OR IMPROPER OPERATION IS
SUSPECTED.
Section Title Page Section Title Page
1. GENERAL 2. DISASSEMBLY
WelCOmMe lia... ccsicscsisececsoesscscesescsencopudecasvesdcccovesesssnssds cossoangters 5 2-1. Rear Cover Removal ......cccssscssssssecestesessersessssees 22
Checking your model number ........cccssccscccssnsseesesseseesresenees 5 2-2. Chassis Assy Removal .......cccsccccssessecsstscscesetensesvase 22
Step 1S HOOKUD sas cavisssaseesecssaias cecvensosseveevstescvasuceasedvoesacaesey ste 5 2-3. Service POSitiON .......ccsscccccssssesesseessstesesessenecesseneee 22
Step 2: Installing the glass door and adjusting the shelf ........ 9 2-4. Control Switch Removal
Step 3: Setting up the remote commander ........seeseeseees 10 (KV-27V35/29V35C/29V75M/32V35/34V35C) ... 22
Step 4: Setting up the TV automatically (AUTO SET UP)... 10 2-5. Picture Tube Removal (KV-27V20/27V25/
Changing the menu language .........cssssccscesseseseeseseeecssees 12 27V35/29V20M/29V35C/29 V65M/29V75M) ....... 23
Adjusting the tilt of the picture (TILT CORRECTION) ....... 12 2-6. Picture Tube Removal
Watching the TV .u....cscssssesseseseseeesees 12 (KV-32V25/32V35/34V35C) uo. sesssscsssereseeesterteeeesses 23
Watching two programs at a time-PIP 13
Adjusting the picture (VIDEO) sssssssseooone 14 3. SAFETY RELATED ADJUSTMENTS .................. 25
Selecting the video mode (VIDEO) .....sssssssessssesessssseessseesssees 14 4. DIAGRAMS
Adjusting picture brightness automatically 4-1. Block Diagrams 0... ccsessesssssceescssessssscasssseeses
(LIGHTSENSOR) ...ccccsssssssssssssosvsscsesssssscessenesssosvavescesessenes 15 4-2. Circuit Boards Location
Adjusting the sound (AUDIO) 15 4-3. Printed Wiring Boards and Schematic Diagrams.... 35
Using audio effect (EFFECT) 15 @ PSBOard or casscatsteestendicddvecadeencensnsessencetsrdesgacansseessooonts 36
Selecting stereo or bilingual programs (MTS) ...........scseee 16 © SC Board visissccisscnssccsdsasisecisisasstaivassecsssaxanceeasstennsees 39
Setting the speaker switch (SPEAKER) ........sscsccsssssessesens 16 WA Board visscesccsissceteccensecesans oassacssiecsnarsseesvaesseguaeevees 41
Setting audio out (AUDIO OUT) .......cseeesessocesseseesteeeees 16 OU Boat iicccisseiecssiteveesincnvscecarssadsveorsdcsveiecsesivaasies 47
Setting daylight saving time (DAYLIGHT SAVING).......... 17 © WB, SC Boards .......ccccccssssscecsssescssesseessscencatsseeeees 52
Setting the clock (CURRENT TIME SET).......ccssscssssssseees 17 HV, HS Boards .....ccccsesesseccsssssescsssecersscsecreecssens 55
Setting the timer to turn the TV on and off © C, G Boards itis cccssscisseccissovssssosicssecieasesiscatasensaicesect 59
(ON/OFF TIMER) ...ccssssssssscsssessssssnecsssesescsssessesssnessseeesoees 17 CAV, KK Board ci feciectssssaccestedasesvsssesvstnitedesersssesrasecess 64
Customizing the channel names (CHANNEL CAPTION)... 18 4-4, SeMiCONAUCTOLS ......sccccsssccrceresrcerssrcesessseeeeseeeecsaseecens 70
Blocking out a channel (CHANNEL BLOCK) ..........sscss00 18
Setng your favorite channels (FAVORITE CHANNEL)... 18> oa pips KV-32V25/32V35/34V35C) . . . . 71
Setting video labels (VIDEO LABEL) .........c.sssessscesssessesees 5-2, Picture Tube >
Penne a vale Caley ™ey) (EXCEPT KV-32V25/32V35/34V35C) sacsssceesseee 2B
Saale BE NES OE aR 5-3. Chassis (KV-32V25/32V35/34V35C) sasesssannse 14
; a 5-4. Picture Tube (KV-32V25/32V35/34V35C) «0... 75
Troubleshooting ........csscssssssssessevsesssersessessesssssssssssesnsesssesesess
6. ELECTRICAL PARTS LIST... cesses 76
(ATTENTION)
APRES AVOIR DECONNECTE LE CAP DE L'ANODE, COURT-
CIRCUITER L'ANODE DU TUBE CATHODIQUE ET CELUI DE
L'ANODE DU CAP AU CHASSIS METALLIQUE DE L'APPAREIL, OU
AU COUCHE DE CARBONE PEINTE SUR LE TUBE CATHODIQUE
OU AU BLINDAGE DU TUBE CATHODIQUE.
ATTENTION!!
AFIN D'EVITER TOUT RESQUE D'ELECTROCUTION PROVENANT
D'UN CHASSIS SOUS TENSION, UN TRANSFORMATEUR
D'ISOLEMENT DOIT ETRE UTILISE LORS DE TOUT DEPANNAGE.
LE CHASSIS DE CE RECEPTEUR EST DIRECTEMENT RACCORDE
A L'ALIMENTATION SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS A LA
SECURITE!!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET PAR UNE
MARQUE A SUR LES SCHEMAS DE PRINCIPE, LES VUES
EXPLOSEES ET LES LISTES DE PIECES SONT D'UNE IMPORTANCE
CRITIQUE POUR LA SECURITE DU FONCTIONNEMENT. NE LES
REMPLACER QUE PAR DES COMPOSANTS SONY DONT LE
NUMERO DE PIECE EST INDIQUE DANS LE PRESENT MANUEL OU
DANS DES SUPPLEMENTS PUBLIES PAR SONY. LES REGLAGES
DE CIRCUIT DONT L'IMPORTANCE EST CRITIQUE POUR LA
SECURITE DU FONCTIONNEMENT SONT IDENTIFIES DANS LE
PRESENT MANUEL. SUIVRE CES PROCEDURES LORS DE CHAQUE
REMPLACEMENT DE COMPOSANTS CRITIQUES, OU LORSQU'UN
MAUVAIS FONCTIONNEMENT EST SUSPECTE.