KV-J25MF8J - Sony TV Service Manual (repair manual). Page 3

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TABLE OF CONTENTS
Section
Title
Page
1. GENERAL
........................................................................
4
2. DISASSEMBLY
2-1.
Rear Cover Removal ................................................ 11
2-2.
Speaker Removal ..................................................... 11
2-3.
Chassis Assy Removal ............................................. 11
2-4.
Service Position ....................................................... 12
2-5.
S1 Board Removal ................................................... 12
2-6.
A and D Boards Removal ........................................ 12
2-7.
F1 and H3 Boards Removal ..................................... 13
2-8.
Picture Tube Removal .............................................. 13
3. SET-UP ADJUSTMENTS
3-1.
Beam Landing .......................................................... 15
3-2.
Convergence ............................................................. 16
3-3.
Focus Adjustment .................................................... 19
3-4.
G2 (Screen) and White Balance Adjustments ......... 20
4. SELF DIAGNOSIS FUNCTION
................................ 21
5. CIRCUIT ADJUSTMENT
5-1.
Adjustments with Commander ................................ 22
5-2.
Adjustment Method ................................................. 23
5-3.
Picture Quality Adjustment ..................................... 27
5-4.
A Board Adjustment ................................................ 27
5-5.
ABoard Adjustyment After IC003 (Memory)
Replacement ............................................................. 28
5-6.
Picture Distortion Adjustment ................................. 28
Section
Title
Page
6. DIAGRAMS
6-1.
Block Diagram ......................................................... 29
6-2.
Frame Schematic Diagram ...................................... 31
6-3
Circuit Boards Location .......................................... 34
6-4.
Schematic Diagrams and Printed Wiring Boards .... 34
(1)
Schematic Diagrams of D, F1 and H3 Boards ........ 35
(2)
Schematic Diagram of A Board ............................... 43
(3)
Schematic Diagram of S1 Board ............................. 50
(4)
Schematic Diagram of C2 Board ............................ 53
(5)
Schematic Diagrams of VM Board ......................... 55
6-5.
Semiconductors ........................................................ 57
7. EXPLODED VIEWS
7-1.
Picture Tube ............................................................. 59
7-2.
Chassis ..................................................................... 60
8. ELECTRICAL PARTS LIST
....................................... 61
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