– 3 –
KV-XF25M81
RM-954
TABLE OF CONTENTS
Section
Title
Page
SELF DIAGNOSIS FUNCTION
................................
4
1. GENERAL
........................................................................
8
2. DISASSEMBLY
2-1.
Rear Cover Removal ................................................ 23
2-2.
Chassis Assy Removal ............................................. 23
2-3.
F Bracket Removal .................................................. 23
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 ...................................... 24
2-7.
V1 Board Removal .................................................. 24
2-8.
H3 Board Removal .................................................. 25
2-9.
A and B3 Boards Removal ...................................... 25
2-10.
Picture Tube Removal .............................................. 25
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 ................................................. 33
4-3.
Picture Quality Adjustments .................................... 38
4-4.
A Board Adjustment After IC003 (Memory)
Replacement............................................................. 38
4-5.
Picture Distortion Adjustment ................................. 39
Section
Title
Page
5. DIAGRAMS
5-1.
Block Diagram ......................................................... 41
5-2.
Frame Schematic Diagram ...................................... 44
5-3
Circuit Boards Location .......................................... 47
5-4.
Schematic Diagrams and Printed Wiring Boards ... 48
(1)
Schematic Diagram of A (1/2) Board ...................... 51
(2)
Schematic Diagrams of A (2/2), B2 and F Boards . 55
(3)
Schematic Diagram of C Board .............................. 61
(4)
Schematic Diagrams of H3, V1 and VM1 Boards .. 67
(5)
Schematic Diagram of B3 Board ............................ 70
5-5.
Semiconductors ........................................................ 75
6. EXPLODED VIEWS
6-1.
Speaker Bracket ....................................................... 78
6-2.
Chassis ..................................................................... 79
6-3.
Picture Tube ............................................................. 80
7. ELECTRICAL PARTS LIST
...................................... 81
Summary of Contents for TRINITRON KV-XF25M81
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