Read Sony KV-XG25M8J Service Manual online
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KV-XG25M8J/XG25P50
RM-952
TABLE OF CONTENTS
Section
Title
Page
SELF DIAGNOSIS FUNCTION
................................
5
1. GENERAL
........................................................................
9
2. DISASSEMBLY
2-1.
Rear Cover Removal ................................................ 24
2-2.
Speaker Removal ..................................................... 24
2-3.
Chassis Assy Removal ............................................. 24
2-4.
Service Position ....................................................... 24
2-5.
Replacement of Parts ............................................... 24
2-5-1. Replacement of Control Button .....................................
24
2-5-2. Replacement of Light Guide ..........................................
24
2-6.
Terminal Bracket Removal ...................................... 25
2-7.
H2 Board Removal .................................................. 25
2-8.
A and B6 Boards Removal ...................................... 25
2-9.
Picture Tube Removal .............................................. 26
2-10. Removal of Anode Cap ............................................ 26
3. SET-UP ADJUSTMENTS
3-1.
Beam Landing .......................................................... 27
3-2.
Convergence ............................................................. 28
3-3.
Focus Adjustment .................................................... 30
3-4.
G2 (Screen) and White Balance Adjustments ......... 31
4. CIRCUIT ADJUSTMENT
4-1.
Adjustments with Commander ................................ 32
4-2.
Adjustment Method ................................................. 32
4-3.
Picture Quality Adjustments .................................... 37
4-4.
Deflection Adjustment ............................................. 37
4-5.
H-Trapezoid Adjustment ......................................... 37
4-6.
A Board Adjustment After IC003 (Memory)
Replacement ............................................................. 37
Replacement ............................................................. 37
4-7.
Picture Distortion Adjustment ................................. 38
Section
Title
Page
5. DIAGRAMS
5-1.
Block Diagram ......................................................... 39
5-2.
Circuit Boards Location .......................................... 41
5-3.
Schematic Diagrams ................................................ 42
(1)
Schematic Diagram of B6 Boards ........................... 43
(2)
Schematic Diagrams of A Board ............................. 45
(3)
Schematic Diagram of H2 Board ............................... 61
(4)
Schematic Diagrams of C6 Board ........................... 63
(5)
Schematic Diagram of VM1 Board ......................... 65
5-4.
Voltage Measurements ............................................ 67
5-5.
Waveforms ............................................................... 71
5-6.
Printed Wiring Boards and Parts Location .............. 73
5-7.
Semiconductors ........................................................ 77
6. EXPLODED VIEWS
6-1.
Picture Tube ............................................................. 79
6-2.
Chassis ..................................................................... 80
7. ELECTRICAL PARTS LIST
....................................... 81
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