Sony Trinitron KV-28DC20B, Руководство по обслуживанию

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TABLE OF CONTENTS
Section Title Page Section Title Page
Specifications .................... 3
Connectors .................... 4
Self Diagnostic Software .................... 5
1. GENERAL
Automatically Tuning the TV .................... 9
Adjusting the Picture & Sound .................... 10
Using the Further Programme
Preset Feature
.................... 11
Manually Tuning the TV .................... 12
Teletext .................... 13
Specifications .................... 15
Troubleshooting .................... 15
2. DISASSEMBLY
2-1. Rear Cover Removal .................... 16
2-2. Chassis Assy Removal .................... 16
2-3-1. Service Position(1) .................... 16
2-3-2. Service Position(2) .................... 16
2-4. Wire Dressing .................... 17
2-5. A Board Removal .................... 17
2-6. A Extension Board .................... 17
2-7. Picture Tube Removal .................... 18
Removal and Replacement of
the Main-Bracket Bottom Plates....................
19
3. SET-UP ADJUSTMENTS
3-1. Beam Landing .................... 20
3-2. Convergence .................... 21
3-3. Screen (G2) .................... 23
3-4. Focus .................... 23
3-5. White Balance .................... 23
4. CIRCUIT ADJUSTMENTS
4-1. Electrical Adjustments .................... 24
4-2. ‘TT’ Test Mode .................... 27
4-3. ‘T’ Test Mode .................... 28
5. DIAGRAMS
5-1. Block Diagram (1) .................... 29
Block Diagram (2) .................... 33
Block Diagram (3) .................... 37
Block Diagram (4) .................... 41
5-2. Circuit Board Location .................... 44
5-3. Schematic Diagrams and
Printed Wiring Boards
.................... 44
* C Board .................... 45
* D Board .................... 49
* VM Board .................... 52
* H Board .................... 53
* D2 Board .................... 55
* J4 Board .................... 56
* N Board .................... 59
* J3 Board .................... 74
* J5 Board .................... 76
* D1 Board .................... 77
* A Board .................... 83
* A2 Board .................... 89
5-4. Semiconductors .................... 95
5-5. IC Blocks .................... 97
6. EXPLODED VIEWS
6-1. Chassis .................... 99
6-2. Picture Tube .................... 100
7. ELECTRICAL PARTS LIST .................... 101
CAUTION
SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND THE
ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR THE
CARBON PAINTED ON THE CRT, AFTER REMOVAL OF THE
ANODE CAP.
WARNING !!
AN ISOLATION TRANSFORMER SHOULD BE USED DURING ANY
SERVICE WORK TO AVOID POSSIBLE SHOCK HAZARD DUE TO
LIVE CHASSIS, THE CHASSIS OF THIS RECEIVER IS DIRECTLY
CONNECTED TO THE POWER LINE.
SAFETY-RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY SHADING AND MARKED £ 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.
ATTENTION
APRES AVOIR DECONNECTE LE CAP DE’LANODE,
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 RISQUE D’ELECTROCUTION PROVENANT
D’UN CHÁSSIS SOUS TENTION, UN TRANSFORMATEUR
D’ISOLEMENT DOIT ETRE UTILISÈ LORS DE TOUT DÈPANNAGE
LE CHÁSSIS DE CE RÈCEPTEUR EST DIRECTMENT RACCORDÈ
Á L’ALIMENTATION SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS Á
LA SECURITÈ!!
LES COMPOSANTS IDENTIFIÈS PAR UNE TRAME ET PAR UNE
MARQUE
£ SUR LES SCHÈMAS DE PRINCIPE, LES VUES
EXPLOSÈES ET LES LISTES DE PIECES SONT D’UNE IMPOR-
TANCE CRITIQUE POUR LA SÈCURITÈ DU FONCTIONNEMENT,
NE LES REMPLACER QUE PAR DES COMPSANTS SONY DONT LE
NUMÈRO DE PIÈCE EST INDIQUÈ DANS LE PRÈSENT MANUEL
OU DANS DES SUPPLÈMENTS PUBLIÈS PAR SONY.