Read Sony KV-XF25M50 (serv.man4) Service Manual online
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KV-XF25M50
RM-954
TABLE OF CONTENTS
Section
Title
Page
SELF DIAGNOSIS FUNCTION
................................
4
1. GENERAL
........................................................................
8
2. DISASSEMBLY
2-1.
Rear Cover Removal ................................................ 25
2-2.
Chassis Assy Removal ............................................. 25
2-3.
F Bracket Removal .................................................. 25
2-4.
Service Position ....................................................... 25
2-5.
Replacement of Parts ............................................... 26
2-5-1.
Replacement of Control Button .......................
26
2-5-2.
Replacement of Light Guide ............................
26
2-6.
Terminal Bracket Removal ...................................... 26
2-7.
H3 Board Removal .................................................. 26
2-8.
A and B3 Boards Removal ...................................... 27
2-9.
Picture Tube Removal .............................................. 27
3. SET-UP ADJUSTMENTS
3-1.
Beam Landing .......................................................... 29
3-2.
Convergence ............................................................. 30
3-3.
Focus Adjustment .................................................... 32
3-4.
G2 (Screen) and White Balance Adjustments ......... 33
4. CIRCUIT ADJUSTMENT
4-1.
Adjustments with Commander ................................ 34
4-2.
Adjustment Method ................................................. 35
4-3.
Picture Quality Adjustments .................................... 40
4-4.
A Board Adjustment After IC003 (Memory)
Replacement ............................................................. 40
Replacement ............................................................. 40
4-5.
Picture Distortion Adjustment ................................. 41
Section
Title
Page
5. DIAGRAMS
5-1.
Block Diagram ......................................................... 43
5-2.
Frame Schematic Diagram ...................................... 46
5-3
Circuit Boards Location .......................................... 49
5-4.
Schematic Diagrams and Printed Wiring Boards ... 50
(1)
Schematic Diagram of A (1/2) Board ...................... 53
(2)
Schematic Diagrams of A (2/2) and F Boards ........ 57
(3)
Schematic Diagram of B2 and VM1 Boards ........... 61
(4)
Schematic Diagrams of B3 Board ........................... 64
(5)
Schematic Diagram of C and H3 Boards ................ 73
5-5.
Semiconductors ........................................................ 76
6. EXPLODED VIEWS
6-1.
Speaker Bracket ....................................................... 79
6-2.
Chassis ..................................................................... 80
6-3.
Picture Tube ............................................................. 81
7. ELECTRICAL PARTS LIST
....................................... 82
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