Table Of Contents; Section Title - Sony PVM-20M2U Service Manual

TABLE OF CONTENTS
Section
Title
1. GENERAL
Features............................................................................... 8
Location and Function of Parts and Controls...................... 9
Using On-screen Menus ...................................................... 11
Connections......................................................................... 13
2. DISASSEMBLY
2-l. Top Cover and Rear Cover Removal ...................... 14
2-2. TeTP,Jinal Board Removal ........................................ 14
2-3. J and H Boards Removal......................................... 14
2-4. Picture Tube Removal............................................. 14
2-5. Service Position....................................................... 15
3. SET-UP ADJUSTMENTS
3-l. Preparations
(1) ...................... ............ ............ .. .......
16
3-2. Preparations (2) Initialization.................................. 19
3-3. Writing Model Data ................................................ 19
3-4. Picture Output ......................................................... 20
3-5. Landing Adjustment................................................ 20
3-6. Convergence Adjustment (1) .................................. 21
3-7. Deflection Yoke Neck Rotation Adjustment .......... 22
3-8. Convergence Adjustment (2) .................................. 22
3-9.
02 Adjustment ........................................................ 23
3-10. White Balance Adjustment ..................................... 23
3-11. Blue-Only White Balance Adjustment.................... 24
3-12. Sub Brt Adjustment ................................................. 24
3-13. Focus Adjustment.................................................... 24
4. SAFETY RELATED ADJUSTMENT .................
25
(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
&
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
5. CIRCUIT ADJUSTMENTS
5-l. A Board Adjustments .............................................. 27
6. DIAGRAMS
6-1. Block Diagrams
(1) .................................................
39
Block Diagrams (2) ................................................. 44
6-2. Frame Schematic Diagram ...................................... 49
6-3. Circuit Boards Location.......................................... 52
6-4. Printed Wiring Boards and Schematic Diagrams.... 52
• A Board (113) ........................................................ 59
• A Board (213) ........................................................ 66
• A Board (3/3) ........................................................ 69
• Q Board ................................................................. 74
•G Board ................................................................. 76
• J Board .................................................................. 76
•XBoard ................................................................. 76
• H Board ................................................................. 78
• S Board ................................................................. 78
• C Board ................................................................. 83
6-5. Semiconductors ....................................................... 87
7. EXPLODED VIEWS
7-1. Chassis ..................................................................... 89
7-2. Picture Tube ............................................................ 90
8. ELECTRICAL PARTS LIST..............................
91
(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 DOlT ETRE UTILIS~ LORS DE TOUT D~PANNAGE.
LE CHASSIS DE CE R~CEPTEUR EST DIRECTEMENT RACCORDE
A
L'ALIMENTATION SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS
A
LA
S~CURIT~!!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET PAR UNE
MARQUE
&
SUR LES SCH~MAS DE PRINCIPE, LES VUES
EXPLOS~ES ET LES LISTES DE PIECES SONT D'UNE IMPORTANCE
CRITIQUE POUR LA SECURIT~ DU FONCTIONNEMENT. NE LES
REMPLACER QUE PAR DES COMPOSANTS SONY DONT LE
NUM~RO DE PI~CE EST INDIQU~ DANS LE PR~SENT MANUEL OU
DANS DES SUPPL~MENTS PUBLI~S PAR SONY. LES R~GLAGES
DE CIRCUIT DONT L'IMPORTANCE EST CRITIQUE POUR LA
S~CURIT~ DU FONCTIONNEMENT SONT IDENTIFIES DANS LE
PR~SENT MANUEL SUIVRE CES PROC~DURES LORS DE CHAQUE
REMPLACEMENT DE COMPOSANTS CRITIQUES, OU LORSQU'UN
MAUVAIS FONCTIONNEMENT EST
SUSPECT~.
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