– 2 –
KV-HW21P80A
RM-969
TABLE OF CONTENTS
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.
SELF DIAGNOSIS FUNCTION ......................................
3
1. DISASSEMBLY
1-1. Rear Cover Removal ................................................. 6
1-2. Speaker Removal ...................................................... 6
1-3. Chassis Assy Removal .............................................. 6
1-4. Service Position ........................................................ 6
1-5. Terminal Bracket Removal ....................................... 6
1-6. A Board Removal ...................................................... 6
1-7. Picture Tube Removal ............................................... 7
2. SET-UP ADJUSTMENTS
2-1. Beam Landing ........................................................... 8
2-2. Convergence .............................................................. 9
2-3. Focus Adjustment .................................................... 11
2-4. G2 (SCREEN) and White Balance Adjustments ... 11
3. CIRCUIT ADJUSTMENTS
3-1. Adjustment With Commander ................................ 12
3-2. Adjustment Method ................................................ 12
3-3. Picture Quality Adjustment .................................... 18
3-4. Deflection Adjustment ............................................ 18
3-5. A Board Adjustment After IC003 (MEMORY)
Replacement ............................................................ 18
3-6. Picture Distortion Adjustment ................................ 19
Section
Title
Page
Section
Title
Page
4. DIAGRAMS
4-1. Block Diagram ........................................................ 20
4-2. Circuit Boards Location .......................................... 22
4-3. Schematic Diagram ................................................. 22
(1) A Board Schematic Diagram ............................ 23
(2) C Board Schematic Diagrams ........................... 25
4-4. Voltage Measurement and Wareforme ................... 26
4-5. Printed Wiring Boards and Parts Location ............. 29
4-6. Semiconductors ....................................................... 32
5. EXPLODED VIEWS
5-1. Picture Tube and Chassis ........................................ 34
6. ELECTRICAL PARTS LIST ....................................
35
OPERATING INSTRUCTIONS
