Read Sony KV-LS21M50 Service Manual online
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KV-LS21M50/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.
Service Position ........................................................... 5
1-4.
A Board Removal ........................................................ 5
1-5.
H1 Board Removal ...................................................... 5
1-6.
Picture Tube Removal .................................................. 6
2. SET-UP ADJUSTMENTS
2-1.
Beam Landing Adjustment .......................................... 7
2-2.
Convergence Adjustment ............................................. 7
2-3.
Focus Adjustment ........................................................ 9
2-4.
G2 (SCREEN) Adjustment .......................................... 9
2-5.
White Balance Adjustment .......................................... 9
2-6.
Sub Bright Adjustment ................................................ 9
3. CIRCUIT ADJUSTMENTS
3-1.
Adjustments With Commander ................................. 10
3-2.
Adjustment Method ................................................... 11
3-3.
Picture Quality Adjustment ....................................... 30
3-3-1. P MAX/Contrast Adjustment ......................... 30
3-3-2. Sub Color Adjustment .................................... 30
3-3-3. Sub Hue Adjustment ....................................... 30
3-3-1. P MAX/Contrast Adjustment ......................... 30
3-3-2. Sub Color Adjustment .................................... 30
3-3-3. Sub Hue Adjustment ....................................... 30
3-4.
Geometry Adjustment ................................................ 31
3-4-1. General Setting ............................................... 31
3-4-2. Pal 50Hz Normal Mode .................................. 31
3-4-1. General Setting ............................................... 31
3-4-2. Pal 50Hz Normal Mode .................................. 31
4. DIAGRAMS
4-1.
Block Diagram ........................................................... 32
4-2.
Circuit Boards Location ............................................ 33
4-3.
Schematic Diagram Information ............................... 33
4-3-1. A Board — (Block 001) .................................. 34
4-3-2. A Board — (Block 002) .................................. 36
4-3-3. A Board — (Block 003) .................................. 38
4-3-4. A Board — (Block 004) .................................. 40
4-3-5. A Board — (Block 005) .................................. 42
4-3-6. A Board — (Block 006) .................................. 44
4-3-7. A Board — (Block 007) .................................. 46
4-3-8. CV Board Schematic Diagram ....................... 47
4-3-9. H1 Board Schematic Diagram ........................ 48
4-3-1. A Board — (Block 001) .................................. 34
4-3-2. A Board — (Block 002) .................................. 36
4-3-3. A Board — (Block 003) .................................. 38
4-3-4. A Board — (Block 004) .................................. 40
4-3-5. A Board — (Block 005) .................................. 42
4-3-6. A Board — (Block 006) .................................. 44
4-3-7. A Board — (Block 007) .................................. 46
4-3-8. CV Board Schematic Diagram ....................... 47
4-3-9. H1 Board Schematic Diagram ........................ 48
4-4.
Voltage Measurement and Waveforms ...................... 49
4-5.
Printed Wiring Boards ............................................... 52
4-6.
Semiconductors .......................................................... 55
5. EXPLODED VIEWS
5-1.
Picture Tube, Speaker Bracket and Chassis .............. 57
6. ELECTRICAL PARTS LIST .............................................. 59
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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