KV-27HS420 (serv.man2) - Sony TV Service Manual (repair manual). Page 2

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KV-27HS420/29DRC430/30HS420/32HS420/34HS420
KV-27HS420/29DRC430/30HS420/32HS420/34HS420
TABLE OF CONTENTS 
SECTION TITLE   
PAGE
SECTION TITLE   
PAGE
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
SECTION 4:  CIRCUIT ADJUSTMENTS ............................................... 39
4-1. Setting Service Adjustment Mode ........................................ 39
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
4-2.  Memory Write Confi rmation Method .................................... 40
4-3.  Remote Adjustment Buttons and Indicators ......................... 40
4-4. Service Data 
......................................................................... 41
 KV-27HS420/29DRC430 
Only 
............................................. 41
 KV-30HS420 
Only 
................................................................ 55
 KV-32HS420 
Only 
................................................................ 69
 KV-34HS420 
Only 
................................................................ 83
4-5. ID Map Table ........................................................................ 96
SECTION 5:  DIAGRAMS ..................................................................... 97
5-1.  Circuit Boards Location ........................................................ 97
5-2.  Printed Wiring Boards and 
Schematic Diagrams Information ......................................... 97
5-3. Block Diagrams .................................................................... 98
5-4.  Schematics and Supporting Information ............................ 101
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
5-5.  Semiconductors (1 of 2) ..................................................... 130
 
Semiconductors (2 of 2) ..................................................... 131
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
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