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KV-XA25M61/XA25M31/XA25M90/XA25M80/XA25M50
RM-954
KV-XA25M87/XA25M84/XA25M86
RM-953
TABLE OF CONTENTS
Section
Title
Page
SELF DIAGNOSIS FUNCTION
................................
5
1. GENERAL
........................................................................
8
2. DISASSEMBLY
2-1.
Rear Cover Removal ............................................... 46
2-2.
Speaker Removal ..................................................... 46
2-3.
Chassis Assy Removal ............................................. 46
2-4.
F Bracket Removal .................................................. 46
2-5.
Service Position ....................................................... 46
2-6.
Replacement of Parts ............................................... 46
2-6-1 Replacement of Light Guide ..............................................
46
2-6-2 Replacement of Power Button ...........................................
46
2-7.
HV Cap Block, PWB Holder and J Board Removal .. 47
2-8.
Terminal Bracket Removal ...................................... 47
2-9.
B1 Board Removal .................................................. 47
2-10. H Board Removal .................................................... 47
2-11.
2-11.
A and B Boards Removal ........................................ 47
2-12. Picture Tube Removal ............................................. 48
3. ADVANCE OPERATION
3-1.
"RESET" Function ................................................... 49
4. SET-UP ADJUSTMENTS
4-1.
Beam Landing .......................................................... 50
4-2.
Convergence Adjustment ......................................... 51
4-3.
Focus Adjustment .................................................... 53
4-4.
G2 (Screen) and White Balance Adjustments ......... 54
5. CIRCUIT ADJUSTMENTS
5-1.
Adjustments with Commander ................................ 55
5-2.
Adjustment Method ................................................. 55
5-3.
Picture Quality Adjustments .................................... 61
5-4.
Deflection Adjustment ............................................. 61
5-5.
H-Trapezoid Adjustment ......................................... 62
5-6.
A Board Adjustment after IC003 Replacement ...... 62
5-7.
Picture Distortion Adjustment ................................. 63
Section
Title
Page
6.
DIAGRAMS
6-1. Block Diagram .......................................................... 65
6-2. Circuit Board Location ............................................. 67
6-3. Schematic Diagrams ................................................. 68
6-2. Circuit Board Location ............................................. 67
6-3. Schematic Diagrams ................................................. 68
(1) Schematic Diagram of H Board ......................... 69
(2) Schematic Diagram of A Board .......................... 71
(3) Schematic Diagram of B Board ......................... 87
(4) Schematic Diagram of P2 Board ....................... 89
(5) Schematic Diagram of V1 Board ........................ 91
(6) Schematic Diagram of C6 Board ........................ 93
(7) Schematic Diagram of B1 Board ........................ 94
(8) Schematic Diagram of VM1 Board .................... 95
(9) Schematic Diagram of F and J Boards ............... 96
(10) Schematic Diagram of J1 Board ....................... 97
(2) Schematic Diagram of A Board .......................... 71
(3) Schematic Diagram of B Board ......................... 87
(4) Schematic Diagram of P2 Board ....................... 89
(5) Schematic Diagram of V1 Board ........................ 91
(6) Schematic Diagram of C6 Board ........................ 93
(7) Schematic Diagram of B1 Board ........................ 94
(8) Schematic Diagram of VM1 Board .................... 95
(9) Schematic Diagram of F and J Boards ............... 96
(10) Schematic Diagram of J1 Board ....................... 97
6-4.
Voltage Measurements ............................................ 101
6-5.
Waveforms .............................................................. 108
6-6.
Printed Wiring Boards and Parts Location ............. 109
6-7.
Semiconductors ....................................................... 117
7.
EXPLODED VIEWS
7-1.
Picture Tube ............................................................ 119
7-2.
Chassis .................................................................... 120
8.
ELECTRICAL PARTS LIST
.................................... 121
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