Read Sony KDL-22L4000 Service Manual online
3
KDL-22L4000
KDL-22L4000
TABLE OF CONTENTS
SECTION TITLE
PAGE
SECTION TITLE
PAGE
Specifi cations ................................................................................. 4
Warnings and Cautions .................................................................. 6
Safety-Related Component Warning .............................................. 8
Safety Check-Out ......................................................................... 10
Self-Diagnostic Function ................................................................11
SECTION 1: DISASSEMBLY ............................................................... 12
1-1. Rear Cover Removal ............................................................ 12
1-2. Function Key and H1 Board Removal .................................. 12
1-3. A Board and G Board Removal ............................................ 13
1-4. Table-Top Stand Assembly and Under Cover Removal ....... 13
1-5. Loudspeaker Removal ......................................................... 14
1-6. Bottom Cover, H2 Board, H3 Board, IR Lens and
LED Lens Removal .............................................................. 14
1-7. LCD Panel Removal
............................................................. 15
1-7-1. Cleaning the LCD Panel ............................................ 15
Wire Dressing ............................................................................... 16
SECTION 2: SERVICE ADJUSTMENTS ............................................. 17
2-1. Accessing Service (Factory) Mode ...................................... 17
2-2. Reviewing Service (Factory) Mode ...................................... 18
2-3. Resetting to Factory Defaults after Board Replacement ...... 18
2-4. Viewing Model Information
................................................... 19
SECTION 3: DIAGRAMS ..................................................................... 20
3-1. Circuit Boards Location ........................................................ 20
3-2. Printed Wiring Boards and
Schematic Diagrams Information ......................................... 20
3-3. Block Diagram
...................................................................... 22
3-4. Schematics and Supporting Information .............................. 23
A Board Schematic Diagram (1 of 21) .................................. 23
A Board Schematic Diagram (2 of 21) .................................. 24
A Board Schematic Diagram (3 of 21) .................................. 25
A Board Schematic Diagram (4 of 21) .................................. 26
A Board Schematic Diagram (5 of 21) .................................. 27
A Board Schematic Diagram (6 of 21) .................................. 28
A Board Schematic Diagram (7 of 21) .................................. 29
A Board Schematic Diagram (8 of 21) .................................. 30
A Board Schematic Diagram (9 of 21) .................................. 31
A Board Schematic Diagram (10 of 21) ................................ 32
A Board Schematic Diagram (11 of 21) ................................ 33
A Board Schematic Diagram (12 of 21) ................................ 34
A Board Schematic Diagram (13 of 21) ................................ 35
A Board Schematic Diagram (14 of 21) ................................ 36
A Board Schematic Diagram (15 of 21) ................................ 37
A Board Schematic Diagram (16 of 21) ................................ 38
A Board Schematic Diagram (17 of 21) ................................ 39
A Board Schematic Diagram (18 of 21) ................................ 40
A Board Schematic Diagram (19 of 21) ................................ 41
A Board Schematic Diagram (20 of 21) ................................ 42
A Board Schematic Diagram (21 of 21) ................................ 43
G Board Schematic Diagram (1 of 2) ................................... 45
G Board Schematic Diagram (2 of 2) ................................... 46
H1 Board Schematic Diagram .............................................. 48
H2 Board Schematic Diagram .............................................. 50
H3 Board Schematic Diagram .............................................. 52
SECTION 4: EXPLODED VIEWS ........................................................ 54
4-1. Rear Cover Assembly and Table-Top Stand Assembly ....... 54
4-2. Chassis ................................................................................ 55
4-3. Screw Legend ...................................................................... 56
APPENDIX A: ENCRYPTION KEY COMPONENTS ..........................A-1
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