KV-SW252M50 (serv.man2) — Sony TV Service Manual (repair manual). Page 2

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KV-SW252M50/M60K/M61/M81/N60
RM-GA002
TABLE OF CONTENTS
SELF DIAGNOSTIC FUNCTION ............................................. 3
1. DISASSEMBLY
1-1. Rear Cover Removal ....................................................... 5
1-2. Speaker Removal ............................................................ 5
1-3. Chassis Assy Removal (Except KV-SW252M60K) ...... 5
1-4. Chassis Assy Removal (KV-SW252M60K) ................... 5
1-5. Service Position (Except KV-SW252M60K) ................. 5
1-6. Service Position ( KV-SW252M60K) ............................ 5
1-7. Terminal Bracket Removal
(Except KV-SW252M60K) ............................................ 6
1-8. Terminal Bracket Removal (KV-SW252M60K) ............ 6
1-9. F2 (except KV-SW252M50/M60K) and J3 Boards
Removal .......................................................................... 6
1-10. F1 Board Removal (Except KV-SW252M60K) ............. 6
1-11. F1 Board Removal (KV-SW252M60K) ......................... 6
1-12. H4 and H7 Boards Removal
 (Except KV-SW252M60K) ........................................... 6
1-13. H4 and H7 Boards Removal (KV-SW252M60K) .......... 7
1-14. A Board Removal  (Except KV-SW252M60K) ............. 7
1-15. A Board Removal (KV-SW252M60K) .......................... 7
1-16. B and K2 Boards Removal (KV-SW252M60K) ............ 7
1-17. Picture Tube Removal (Except KV-SW252M60K) ....... 8
1-18. Picture Tube Removal (KV-SW252M60K) ................... 8
2. SET-UP ADJUSTMENTS
2-1. Beam Landing ............................................................... 10
2-2. Convergence .................................................................. 11
2-3. Focus Adjustment .......................................................... 13
2-4. G2 (SCREEN) Adjustments ......................................... 13
2-5. White Balance Adjustment ........................................... 13
3. CIRCUIT ADJUSTMENTS
3-1. Adjustment With Commander ...................................... 14
3-2. Adjustment Method ...................................................... 15
3-3. Picture Quality Adjustment .......................................... 33
3-3-1. P MAX/Contrast Adjustment ............................. 33
3-3-2. Sub Color Adjustment ........................................ 33
3-3-3. Sub Hue Adjustment .......................................... 33
3-3-4. Sub Bright Adjustment ....................................... 33
3-4. Geometry Adjustment ................................................... 33
3-4-1. General Setting ................................................... 33
3-4-2. Pal 50Hz Normal Mode ..................................... 34
Section
Title
Page
Section
Title
Page
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK 
! ON THE
SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE
PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE
THESE COMPONENTS WITH SONY PARTS WHOSE PART
NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.
CAUTION
SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND THE
ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR
CARBON PAINTED ON THE CRT, AFTER REMOVING THE
ANODE.
4. DIAGRAMS
4-1. Block Diagram .............................................................. 35
4-2. Circuit Boards Location ................................................ 36
4-3. Schematic Diagram Information .................................. 36
4-3-1. A Board —  (Block 001) .................................... 37
4-3-2. A Board —  (Block  002) ................................... 39
4-3-3. A Board —  (Block 003) .................................... 41
4-3-4. B Board Schematic Diagram ............................. 42
4-3-5. C Boards Schematic Diagrams .......................... 44
4-3-6. F2 Boards Schematic Diagram .......................... 46
4-3-7. H7 Board Schematic Diagram ........................... 48
4-3-8. K2 Board Schematic Diagram ........................... 50
4-3-9. VM Board Schematic Diagram .......................... 52
4-3-10. F1 and H4 Board Schematic Diagram ............. 54
4-3-11. J3 Board Schematic Diagram .......................... 55
4-4. Voltage Measurement and Waveforms ......................... 56
4-5. Printed Wiring Boards .................................................. 60
4-6. Semiconductors ............................................................. 67
5. EXPLODED VIEWS
5-1. Picture Tube and Speaker Bracket ................................ 69
5-2(1) Chassis ........................................................................ 71
5-2(2) Chassis ........................................................................ 72
6. ELECTRICAL PARTS LIST .......................................... . 73
OPERATING INSTRUCTIONS
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