Table Of Contents; Section Title - Sony TRINITRON KV-27HS420 Service Manual

SECTION TITLE
Specifi cations ................................................................................. 4
Warnings and Cautions .................................................................. 6
Safety Check-Out ........................................................................... 7
Self-Diagnostic Function ................................................................. 8
SECTION 1: DISASSEMBLY ................................................................11
1-1. Rear Cover Removal .............................................................11
1-2. Chassis Assembly Removal ..................................................11
1-3. Service Position ....................................................................11
1-4. Picture Tube Removal .......................................................... 12
Anode Cap Removal Procedure .......................................... 12
Cable Wire Dressing ............................................................ 13
SECTION 2: SET-UP ADJUSTMENTS ................................................ 26
2-1. Beam Landing ...................................................................... 26
2-2. V-PIN and V-CEN Adjustment .............................................. 27
2-3. Convergence ........................................................................ 27
2-3.1. Vertical and Horizontal Static Convergence ............ 27
2-3.2. Operation of BMC (Hexapole) Magnet .................... 27
2-3.3. TLH Plate Adjustment .............................................. 27
2-3.4. Screen-Corner Convergence ................................... 28
2-3.5. Dynamic Convergence Adjustments ........................ 28
2-4. Focus Adjustment ................................................................. 29
2-4.1. Dynamic Focus/Dynamic Quadra-Pole Data ........... 29
2-5. Screen (G2) .......................................................................... 30
2-6. Picture Quality Adjustments ................................................. 30
2-6.1. Video Input - Sub Contrast Adjustment .................... 30
2-6.2. Video Input - Sub Hue/Sub Color Adjustment .......... 31
2-6.3. RF Input - Sub Contrast Adjustment ........................ 31
2-6.4. RF Input - Sub Hue/Sub Color Adjustment .............. 32
2-7. White Balance (CRT) and Sub Bright Adjustment ................ 32
2-7.1. Color Offset Adjustment Procedure ......................... 32
2-8. H Raster Center Adjustment ................................................ 33
2-9. Picture Distortion Adjustments ............................................. 33
2-9.1. NTSC (DRC) Full Mode Adjustment ........................ 33
CXA2170D-1 ................................................................... 33
CXA2170D-2 ................................................................... 34
2-9.2. 1080i HD Mode Adjustment ..................................... 34
2-9.3. Vertical Compressed Mode Check and Confi rmation
(For 4x3 CRT Only) ................................................. 34
2-9.4 Normal, Zoom and Wide Zoom modes .................... 34
SECTION 3: SAFETY RELATED ADJUSTMENTS .............................. 35
3-1. Preparation Before Confi rmation .......................................... 35
3-1.1 Hold-Down Operation Confi rmation ......................... 35
3-2. B+ Max Confi rmation ........................................................... 35
3-3. B+ Voltage Check ................................................................ 35
3-4. High Voltage (HV) Check ..................................................... 35
3-5. Preparation for HV and Ik Protector Check .......................... 35
3-6. HV Protector Check ............................................................. 35
3-6-1. Cut Off Condition ..................................................... 35
3-6-2. High Light Condition ................................................ 36
3-7. IK Protector Check ............................................................... 36
3-8. Hold Down Check ................................................................ 36
3-9. Restoration ........................................................................... 36
3-10. HV Service Flowchart ........................................................... 37
HV Service Flowchart Table ................................................. 38
KV-27HS420/29DRC430/30HS420/32HS420/34HS420

TABLE OF CONTENTS

PAGE

SECTION TITLE

SECTION 4: CIRCUIT ADJUSTMENTS ............................................... 39
4-1. Setting Service Adjustment Mode ........................................ 39
4-2. Memory Write Confi rmation Method .................................... 40
4-3. Remote Adjustment Buttons and Indicators ......................... 40
4-4. Service Data ......................................................................... 41
4-5. ID Map Table ........................................................................ 96
SECTION 5: DIAGRAMS ..................................................................... 97
5-1. Circuit Boards Location ........................................................ 97
5-2. Printed Wiring Boards and
5-3. Block Diagrams .................................................................... 98
5-4. Schematics and Supporting Information ............................ 101
5-5. Semiconductors (1 of 2) ..................................................... 130
SECTION 6: EXPLODED VIEWS ...................................................... 132
6-1. Chassis (KV-27HS420/29DRC430 Only) ........................... 132
6-2. Picture Tube (KV-27HS420/29DRC430 Only) .................... 133
6-3. Chassis (KV-30HS420/34HS420 Only) .............................. 134
6-4. Picture Tube (KV-30HS420/34HS420 Only) ...................... 135
6-5. Chassis (KV-32HS420 Only) .............................................. 136
6-6. Picture Tube (KV-32HS420 Only) ...................................... 137
SECTION 7: ELECTRICAL PARTS LIST .......................................... 138
KV-27HS420/29DRC430/30HS420/32HS420/34HS420
4-1.1. Service Adjustment Mode In .................................... 39
4-1.2. Service Adjustment Mode Memory .......................... 39
4-1.3. Reading the Memory ............................................... 39
4-1.4. Adjusting the Picture ................................................ 39
4-1.5. Resetting the Data ................................................... 39
4-1.6. Resetting the MID NVM Data .................................. 39
4-1.7. Resetting the System NVM Data ............................. 39
4-1.8. Copy Function .......................................................... 39
KV-27HS420/29DRC430 Only ............................................. 41
KV-30HS420 Only ................................................................ 55
KV-32HS420 Only ................................................................ 69
KV-34HS420 Only ................................................................ 83
Schematic Diagrams Information ......................................... 97
A Board Schematic Diagram (1 of 2) .................................. 101
A Board Schematic Diagram (2 of 2) .................................. 102
B Board Schematic Diagram (1 of 2) ................................. 105
B Board Schematic Diagram (2 of 2) ................................. 106
CH Board Schematic Diagram ........................................... 109
D Board Schematic Diagram (1 of 2) .................................. 111
D Board Schematic Diagram (2 of 2) ..................................112
HAX Board Schematic Diagram .........................................114
HB Board Schematic Diagram ............................................115
HCX Board Schematic Diagram ..........................................116
M Board Schematic Diagram (1 of 4) ..................................118
M Board Schematic Diagram (2 of 4) ..................................119
M Board Schematic Diagram (3 of 4) ................................. 120
M Board Schematic Diagram (4 of 4) ................................. 121
P Board Schematic Diagram ............................................. 124
PA Board Schematic Diagram ........................................... 125
UY Board Schematic Diagram ........................................... 126
WY Board Schematic Diagram .......................................... 128
Semiconductors (2 of 2) ..................................................... 131
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