– 3 –
KV-XA21M93
RM-952
TABLE OF CONTENTS
Section
Title
Page
SELF DIAGNOSIS FUNCTION
................................
4
1. GENERAL
........................................................................
7
2. DISASSEMBLY
2-1.
Rear Cover Removal ................................................ 20
2-2.
Speaker Removal ..................................................... 20
2-3.
Chassis Assy Removal ............................................. 20
2-4.
F Bracket Removal .................................................. 20
2-5.
J2 Board and Terminal Bracket Removal ................ 20
2-6.
Service Position ....................................................... 20
2-7.
Replacement of Parts ............................................... 21
2-7-1 Replacement of Light Guide ..............................................
21
2-7-2 Replacement of Power Button ...........................................
21
2-8.
Picture Tube Removal .............................................. 21
3. SET-UP ADJUSTMENTS
3-1.
Beam Landing .......................................................... 23
3-2.
Convergence Adjustment ......................................... 24
3-3.
Focus Adjustment .................................................... 26
3-4.
G2 (Screen) and White Balance Adjustments ......... 27
4. CIRCUIT ADJUSTMENTS
4-1.
Adjustments with Commander ................................ 28
4-2.
Adjustment Method ................................................. 28
4-3.
Picture Quality Adjustments .................................... 33
4-4.
Deflection Adjustment ............................................. 33
4-5.
A Board Adjustment After IC003
(memory) Replacement ........................................... 33
4-6.
Picture Distortion Adjustment ................................. 34
Section
Title
Page
5.
DIAGRAMS
5-1. Block Diagram .......................................................... 35
5-2. Circuit Board Location ............................................. 37
5-3. Schematic Diagrams ................................................. 38
(1) Schematic Diagrams of F, J2 and C1 Boards ..... 39
(2) Schematic Diagram of A Board .......................... 41
5-4. Voltage Measurements .............................................. 57
5-5. Waveforms ................................................................ 60
5-6. Printed Wiring Boards and Parts Location ............... 61
5-7. Semiconductors ......................................................... 65
6.
EXPLODED VIEWS
6-1. Picture Tube .............................................................. 67
6-2. Chassis ...................................................................... 68
7.
ELECTRICAL PARTS LIST
...................................... 69
