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KV-XG25M50
RM-952
TABLE OF CONTENTS
Section
Title
Page
SELF DIAGNOSIS FUNCTION
................................
4
1. GENERAL
........................................................................
8
2. DISASSEMBLY
2-1.
Rear Cover Removal ................................................ 21
2-2.
Speaker Removal ..................................................... 21
2-3.
Chassis Assy Removal ............................................. 21
2-4.
Service Position ....................................................... 21
2-5.
Replacement of Parts ............................................... 21
2-5-1. Replacement of Control Button .....................................
21
2-5-2. Replacement of Light Guide ..........................................
21
2-6.
Terminal Bracket Removal ...................................... 22
2-7.
H2 Board Removal .................................................. 22
2-8.
A and B6 Boards Removal ...................................... 22
2-9.
Picture Tube Removal .............................................. 23
2-10. Removal of Anode Cap ............................................ 23
3. SET-UP ADJUSTMENTS
3-1.
Beam Landing .......................................................... 24
3-2.
Convergence ............................................................. 25
3-3.
Focus Adjustment .................................................... 27
3-4.
G2 (Screen) and White Balance Adjustments ......... 28
4. CIRCUIT ADJUSTMENT
4-1.
Adjustments with Commander ................................ 29
4-2.
Adjustment Method ................................................. 30
4-3.
Picture Quality Adjustments .................................... 35
4-4.
Deflection Adjustment ............................................. 00
4-5.
H-Trapezoid Adjustment ......................................... 00
4-6.
A Board Adjustment After IC003 (Memory)
Replacement ............................................................. 35
Replacement ............................................................. 35
4-7.
Picture Distortion Adjustment ................................. 36
Section
Title
Page
5. DIAGRAMS
5-1.
Block Diagram ......................................................... 37
5-2.
Circuit Boards Location .......................................... 39
5-3.
Schematic Diagrams ................................................ 40
(1)
Schematic Diagram of B6 Boards ........................... 41
(2)
Schematic Diagrams of A Board ............................. 43
(3)
Schematic Diagram of H2 Board ............................... 59
(4)
Schematic Diagrams of C6 Board ........................... 61
(5)
Schematic Diagram of VM1 Board ......................... 63
5-4.
Voltage Measurements ............................................ 64
5-5.
Waveforms ............................................................... 68
5-6.
Printed Wiring Boards and Parts Location .............. 69
5-7.
Semiconductors ........................................................ 74
6. EXPLODED VIEWS
6-1.
Picture Tube ............................................................. 77
6-2.
Chassis ..................................................................... 78
7. ELECTRICAL PARTS LIST
....................................... 79
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