KP-46WT520, KP-51WS520, KP-57WS520 (serv.man3) - Sony TV Service Manual (repair manual). Page 2

Specifi cations ................................................................................. 4
Warnings and Cautions .................................................................. 5
Safety Check-Out ........................................................................... 6
Self-Diagnostic Function................................................................. 7

SECTION 1:  DISASSEMBLY............................................................... 10

1-1.  Rear Board Removal............................................................ 10
1-2. Chassis Assembly Removal................................................. 10
1-3. Service Position ....................................................................11
1-4.  Terminal Board Removal.......................................................11
1-5.  BH Board Board Removal.................................................... 12
1-6.  A Board, D Board, and G Board Removal............................ 12
1-7.  High-Voltage Cable Installation and Removal...................... 13
1-8. Picture Tube Removal.......................................................... 13
1-9.  Speaker Grille, HA1 Board, and HB2 Board Removal 

(KP-46WT520 Only)............................................................. 14

(KP-51WS520/57WS520 Only)............................................ 14

1-11. Beznet Assembly  Removal .................................................. 15

1-11-1. Screen Tape Method................................................ 15

1-12. SR Board Removal .............................................................. 16
 Wire 

Dressing....................................................................... 17

2-1.  Screen Voltage Adjustment (G2) (Coarse Adjustment) ........ 31
2-2.  Screen (G2) Adjustment (Fine Adjustment).......................... 31
2-3. Defl ection Yoke Tilt Adjustment ............................................ 31
2-4. Focus Lens Adjustment........................................................ 32
2-5. Focus VR Adjustment........................................................... 32
2-6. Centering Magnet Adjustment.............................................. 33
2-7. 2-Pole Magnet Adjustment .................................................. 33
2-8. 4-Pole Magnet Adjustment ................................................... 33
2-9. Defocus Adjustment (Blue)................................................... 33
2-10. Electrical Adjustments by Remote Commander................... 34

2-10-1. Method of Entering the Service Adjustment Mode .. 34
2-10-2. Memory Write Confi rmation Method ........................ 34
2-10-3. Adjusting Buttons and Indicator ............................... 34

2-11. Adjustable Service Data Lists .............................................. 35

2-11-1. ID Map Table............................................................ 46

2-12. Registration Adjustment (PJE Mode Only)........................... 47

2-12-1. Setup for Adjustment ............................................... 47
2-12-2. Main Defl ection Adjustment ..................................... 47
2-12-3. Operation Method for Projector Engine Mode ......... 48

2-13. PJE Adjustment (Sub Defl ection Adjustment) ...................... 49

2-13-1. Adjustment for NTSC Full Mode .............................. 50
2-13-2. Copying All Registration Data to Other Modes ........ 52

2-14. Auto Registration Offsets ..................................................... 52
2-15. Auto Registration Error Codes ............................................. 53
2-16. Auto Registration Diagnostics .............................................. 54

D BOARD ..................................................................................... 55
3-1.  HV Regulation Circuit Check and Adjustment...................... 55
3-2.  HV Hold Down Circuit Operation Check .............................. 55
G BOARD ..................................................................................... 56
3-3.  +B Max Voltage Confi rmation .............................................. 56
3-4.  +B OVP Confi rmation........................................................... 56

SECTION 4:  CIRCUIT ADJUSTMENTS.............................................. 57

4-1.  P & P Sub Contrast Adjustment (Video) (SCON) ................. 57
4-2.  P & P Sub Contrast Adjustment (RF) (SCON) ..................... 57
4-3.  P & P Sub-Hue and Sub-Color Adjustment Video 

(SHUE, SCOL) ..................................................................... 57

(SHUE, SCOL) ..................................................................... 57

4-5. Blue Offset Adjustment......................................................... 58

SECTION 5:  DIAGRAMS..................................................................... 59

5-1.  Circuit Boards Location ........................................................ 59
5-2.  Printed Wiring Boards and 

Schematic Diagrams Information ......................................... 59

5-3. Block Diagrams .................................................................... 61

Power Block Diagram........................................................... 61
Audio Signal Path Block Diagram ........................................ 62
Video Path Block Diagram ................................................... 63
SYNC/OSD Path Block Diagram.......................................... 64

5-4.  Schematics and Supporting Information  ............................. 65

CR Board Schematic Diagram  ............................................ 65
CB Board Schematic Diagram  ............................................ 66
CG Board Schematic Diagram ............................................ 67
VM Board Schematic Diagram ............................................ 70
A Board Schematic Diagram (1 of 6).................................... 71
A Board Schematic Diagram (2 of 6).................................... 72
A Board Schematic Diagram (3 of 6).................................... 73
A Board Schematic Diagram (4 of 6).................................... 74
A Board Schematic Diagram (5 of 6).................................... 75
A Board Schematic Diagram (6 of 6).................................... 76
D Board Schematic Diagram (1 of 2) ................................... 81
D Board Schematic Diagram (2 of 2) ................................... 82
BH Board Schematic Diagram (1 of 2)................................. 86
BH Board Schematic Diagram (2 of 2)................................. 87
G Board Schematic Diagram ............................................... 89
HA1 Board Schematic Diagram  .......................................... 92
SR Board Schematic Diagram  ............................................ 93
HB1 Board Schematic Diagram 

(KP-51WS520/57WS520 Only)  .............................. 93

HB2 Board Schematic Diagram (KP-46WT520 Only).......... 93

5-5. Semiconductors ................................................................... 95

6-1.  Cover (KP-46WT520 Only) .................................................. 96
6-2.  Cover (KP-51WS520 Only) .................................................. 97
6-3  Cover (KP-57WS520 Only) .................................................. 98
6-4. Chassis ................................................................................ 99
6-5. Picture Tube ....................................................................... 100

SECTION  7:  ELECTRICAL PARTS LIST......................................... 101