Read Sony KV-SZ252M50 (serv.man3) Service Manual online
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KV-SZ252M50/M91
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 ............................................... 5
1-4.
Service Position ......................................................... 5
1-5.
A and H2 Board Removal ......................................... 5
1-6.
Picture Tube Removal ................................................ 6
2. WIRE DRESSING
2-1.
Lead Assy, Jumper Wire Dressing at A board ........... 7
2-2.
Lead Assy, Jumper Wire Dressing at A board
(only for Audio 6+6 Non DSP models) .................... 7
(only for Audio 6+6 Non DSP models) .................... 7
2-3.
Wire Dressing at A and H2 board ............................. 7
2-4.
Dressing of Conn Assy, 4P VH ................................. 8
2-5.
Dressing of Conn Assy, 5P YUV ............................... 8
2-6.
Dressing of Conn Assy, 4P VM and
Connector Assy, 5P Front In ...................................... 8
Connector Assy, 5P Front In ...................................... 8
2-7.
Installation and Dressing of Earth Assy Coating ...... 8
2-8.
Installation and Dressing of Earth Assy Coating ...... 9
2-9.
Insertion of Lead Assy, H Static ................................ 9
2-10. Dressing of Conn Assy, 5P Front In .......................... 9
2-11. Dress Lead Assy, Earth and Conn Assy,
2-11. Dress Lead Assy, Earth and Conn Assy,
5P In with Purse Lock Ø 5 ...................................... 10
2-12. CV Board Connector Assy dressing ........................ 10
2-13. Connector Assy Wire Dressing ................................ 10
2-14. Connector Assy Wire Dressing ................................ 11
2-15. Overall View of Rotation Coil Conn Dressing ....... 11
2-16. Overall View of Lead Assy, G2; Lead Assy, Focus
2-13. Connector Assy Wire Dressing ................................ 10
2-14. Connector Assy Wire Dressing ................................ 11
2-15. Overall View of Rotation Coil Conn Dressing ....... 11
2-16. Overall View of Lead Assy, G2; Lead Assy, Focus
and Rotation Coil Conn Dressing ........................... 11
2-17. Dress Lead Assy, Speaker to Rotation Coil using
Purse Lock Ø 9 ........................................................ 12
2-18. Dressing of PF Board Conn Assy (for models
with PF board only) ................................................. 12
2-19. Cap Assy, High Voltage Installation ........................ 12
2-20. HV Cap Assy Wire Dressing ................................... 13
2-21. AC Power Cord Wire Dressing ............................... 13
2-20. HV Cap Assy Wire Dressing ................................... 13
2-21. AC Power Cord Wire Dressing ............................... 13
3. SET-UP ADJUSTMENTS
3-1.
Beam Landing Adjustment ...................................... 14
3-2.
Convergence Adjustment ......................................... 15
3-3.
Focus Adjustment .................................................... 17
3-4.
G2 (SCREEN) Adjustments .................................... 17
3-5.
Sub Bright Adjustment ............................................ 17
3-6.
White Balance Adjustment ...................................... 17
Section
Title
Page
Section
Title
Page
4. CIRCUIT ADJUSTMENTS
4-1.
Adjustment With Commander ................................ 18
4-2.
Adjustment Method ................................................ 19
4-3.
Picture Quality Adjustment .................................... 36
4-3-1. P Max/Contrast Adjustment ......................... 36
4-3-2. WHTL Adjustment ..................................
4-3-1. P Max/Contrast Adjustment ......................... 36
4-3-2. WHTL Adjustment ..................................
36
4-3-3. Sub Color Adjustment ..................................36
4-3-4. Sub Hue Adjustment .................................... 37
4-3-4. Sub Hue Adjustment .................................... 37
4-4.
Geometry Adjustment .............................................37
4-4-1. H-Trapezoid Adjustment ..............................37
4-4-2. Normal Mode 50Hz/60Hz ............................37
4-4-3. Wide Mode 50Hz/60Hz
(V Compression Adjustment)................................ 37
4-4-1. H-Trapezoid Adjustment ..............................37
4-4-2. Normal Mode 50Hz/60Hz ............................37
4-4-3. Wide Mode 50Hz/60Hz
(V Compression Adjustment)................................ 37
5. DIAGRAMS
5-1.
Block Diagram ......................................................... 38
5-2.
Circuit Boards Location .......................................... 39
5-3.
Schematic Diagram Information ............................. 39
5-3-1. A Board — (Block 001) ............................... 40
5-3-2. A Board — (Block 002) ............................... 42
5-3-3. A Board — (Block 003) .............................. 44
5-3-4. A Board — (Block 004) ............................... 46
5-3-5. A Board — (Block 005) ............................... 48
5-3-6. A Board — (Block 006) ............................... 50
5-3-7. A Board — (Block 007) ............................... 52
5-3-8 CV Board Schematic Diagram ..................... 53
5-3-9. H2 Board Schematic Diagram ...................... 55
5-3-10. PF Board Schematic Diagram .................... 57
5-3-1. A Board — (Block 001) ............................... 40
5-3-2. A Board — (Block 002) ............................... 42
5-3-3. A Board — (Block 003) .............................. 44
5-3-4. A Board — (Block 004) ............................... 46
5-3-5. A Board — (Block 005) ............................... 48
5-3-6. A Board — (Block 006) ............................... 50
5-3-7. A Board — (Block 007) ............................... 52
5-3-8 CV Board Schematic Diagram ..................... 53
5-3-9. H2 Board Schematic Diagram ...................... 55
5-3-10. PF Board Schematic Diagram .................... 57
5-4.
Voltage Measurement and Waveform ...................... 58
5-5.
Printed Wiring Boards ............................................. 62
5-6.
Semiconductors ........................................................ 66
6. EXPLODED VIEWS
6-1.
Chassis ..................................................................... 68
7. ELECTRICAL PARTS LIST .......................................... 70
OPERATING INSTRUCTIONS
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.
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.
ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR
CARBON PAINTED ON THE CRT, AFTER REMOVING THE
ANODE.
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