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KV-AR25M50A
RM-952
TABLE OF CONTENTS
SELF DIAGNOSTIC FUNCTION ........................................ 4
1. DISASSEMBLY
1-1.
Rear Cover Removal ................................................... 6
1-2.
Speaker Block Assy Removal ..................................... 6
1-3.
Chassis Assy Removal ................................................ 6
1-4.
Service Position .......................................................... 6
1-5.
Terminal Bracket and J Board Removal .................... 6
1-6.
H1 and H2 Boards Removal ....................................... 6
1-7.
A and B9 Boards Removal ......................................... 7
1-8.
Picture Tube Removal ................................................. 7
2. SET-UP ADJUSTMENTS
2-1.
Beam Landing ............................................................. 9
2-2.
Convergence .............................................................. 10
2-3.
Focus Adjustment ..................................................... 12
2-4.
G2 (SCREEN) and White Balance Adjustments ..... 13
3. CIRCUIT ADJUSTMENTS
3-1.
Adjustment With Commander .................................. 14
3-2.
Adjustment Method .................................................. 14
3-3.
Picture Quality Adjustments ..................................... 19
3-4.
Deflection Adjustments ............................................ 19
3-5.
H-Trapezoid Adjustment .......................................... 20
3-6.
A Board Adjustment After IC003 (MEMORY)
Replacement .............................................................. 20
Replacement .............................................................. 20
3-7.
Picture Distortion Adjustment .................................. 21
Section
Title
Page
Section
Title
Page
4. DIAGRAMS
4-1.
Block Diagram .......................................................... 22
4-2.
Circuit Boards Location ........................................... 24
4-3.
Schematic Diagram ................................................... 25
(1) A Board Schematic Diagram .............................. 26
(2) B9 Board Schematic Diagram ............................ 30
(3) C6 Board Schematic Diagram ............................ 32
(4) H1 Board Schematic Diagram ............................ 34
(5) VM1 and H2 Boards Schematic Diagram .......... 36
(6) J Board Schematic Diagram ............................... 38
(1) A Board Schematic Diagram .............................. 26
(2) B9 Board Schematic Diagram ............................ 30
(3) C6 Board Schematic Diagram ............................ 32
(4) H1 Board Schematic Diagram ............................ 34
(5) VM1 and H2 Boards Schematic Diagram .......... 36
(6) J Board Schematic Diagram ............................... 38
4-4.
Voltage List and Waveforms ..................................... 39
4-5.
Printed Wiring Boards and Parts Location ............... 43
4-6.
Semiconductors ......................................................... 48
5. EXPLODED VIEWS
5-1.
Speaker Block ........................................................... 49
5-2.
Chassis ...................................................................... 50
5-3.
Picture Tube .............................................................. 51
6. ELECTRICAL PARTS LIST ......................................... 52
INSTRUCTION MANUAL
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
! ON
THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
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.
THE ANODE CAP TO THE METAL CHASSIS, CRT SHIELD,
OR CARBON PAINTED ON THE CRT, AFTER REMOVING THE
ANODE.
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