– 3 –
KV-AR25M81A
RM-952
TABLE OF CONTENTS
SELF DIAGNOSTIC FUNCTION ........................................
4
1. DISASSEMBLY
1-1.
Rear Cover Removal ................................................... 7
1-2.
Speaker Block Assy Removal ..................................... 7
1-3.
Chassis Assy Removal ................................................ 7
1-4.
Service Position .......................................................... 7
1-5.
Terminal Bracket and J Board Removal .................... 7
1-6.
V1 Board Removal ..................................................... 7
1-7.
H1 and H2 Boards Removal ....................................... 8
1-8.
A and B9 Boards Removal ......................................... 8
1-9.
Picture Tube Removal ................................................. 8
2. SET-UP ADJUSTMENTS
2-1.
Beam Landing ........................................................... 10
2-2.
Convergence .............................................................. 11
2-3.
Focus Adjustment ..................................................... 13
2-4.
G2 (SCREEN) and White Balance Adjustment ....... 14
3. CIRCUIT ADJUSTMENTS
3-1.
Adjustment With Commander .................................. 15
3-2.
Adjustment Method .................................................. 15
3-3.
Picture Quality Adjustments ..................................... 21
3-4.
Deflection Adjustments ............................................ 21
3-5.
H-Trapezoid Adjustment .......................................... 22
3-6.
A Board Adjustment After IC003 (MEMORY)
Replacement .............................................................. 22
3-7.
Picture Distortion Adjustment .................................. 23
Section
Title
Page
Section
Title
Page
4. DIAGRAMS
4-1.
Block Diagram .......................................................... 24
4-2.
Circuit Board Location ............................................. 26
4-3.
Schematic Diagram ................................................... 27
(1) A Board Schematic Diagram .............................. 28
(2) B9 Board Schematic Diagram ............................ 32
(3) V1 Board Schematic Diagram ............................ 34
(4) C6 Board Schematic Diagram ............................ 36
(5) H1 Board Schematic Diagram ............................ 38
(6) H2 Board Schematic Diagram ............................ 40
(7) J Board Schematic Diagram ............................... 41
(8) VM1 Board Schematic Diagram ........................ 42
4-4.
Voltage List and Waveforms ..................................... 43
4-5.
Printed Wiring Boards and Parts Location ............... 47
4-6.
Semiconductors ......................................................... 52
5. EXPLODED VIEWS
5-1.
Speaker Block ........................................................... 54
5-2.
Chassis ...................................................................... 55
5-3.
Picture Tube .............................................................. 56
6. ELECTRICAL PARTS LIST .........................................
57
INSTRUCTION MANUAL
