
– 6 –
KP-43T70K/43T70T/48VS70K/53VS70K/53VS70T
RM-Y906K RM-Y906 RM-Y906K RM-Y906K RM-Y906
(CAUTION)
SHORT CIRCUITTHEANODE OF THE PICTURE TUBEAND THE
ANODE CAP TO THE METAL CHASSIS, CRTSHIELD, OR CAR-
BON PAINTED ON THE CRT, AFTER REMOVING THE ANODE.
WARNING!!
AN ISOLATION TRANSFORMER SHOULD BE USED DURING
ANY SERVICE TO AVOID POSSIBLE SHOCK HAZARD, BE-
CAUSE OF LIVE CHASSIS.
THE CHASSIS OF THIS RECElVER IS DIRECTLYCONNECTED
TO THEAC POWER LINE.
TABLE OF CONTENTS
Section Title Page
–––––– –––– –––– Section Title Page
–––––– –––– ––––
SELF DIAGNOSIS FUNCTION............................................ 4
1. GENERAL
Remote Control ....................................................................... 7
Precautions .............................................................................. 7
Installing and Connecting the Projection TV.......................... 8
Basic Set Up .......................................................................... 12
Using Your New Projection TV ............................................ 13
Adjusting Your SET UP (menus) .......................................... 16
Operating Video Equipment.................................................. 21
Operating a Cable Box .......................................................... 22
Troubleshooting .................................................................... 23
2. DISASSEMBLY
2-1. Rear Board Removal ................................................. 24
2-2. Chassis Assy Removal .............................................. 24
2-3. Service Position......................................................... 24
2-4. HA Board and HB Board Removal
(Except KP-43T70K/43T70T) .................................. 24
2-5. HA Board and HB Board Removal
(KP-43T70K/43T70T) .............................................. 25
2-6. Mirror Cover Removal .............................................. 25
2-7. Beznet Assy Removal ............................................... 25
2-8. HC Board and S Board Removal .............................. 25
2-9. A ,G and FA Boards Removal ................................... 26
2-10. Picture Tube Removal ............................................... 26
2-11. High-Voltage Cable Installation and Removal .......... 26
3. SET-UP ADJUSTMENTS
3-1. Screen Voltage Adjustment (Rough Alignment) ....... 27
3-2. Focus Lens Adjustment ............................................. 27
3-3. Screen (G2) Adjustment ............................................ 27
3-4. Focus VR Adjustment ............................................... 27
3-5. Deflection York Tilt Adjustment ............................... 28
3-6. 2-Pole Magnet Adjustment (Green, Red) .................. 28
3-7. 4-Pole Magnet Adjustment ........................................ 28
3-8. Defocus Adjustment (Blue) ....................................... 28
3-9. Electrical Adjustment by Remote Commander ......... 29
3-10. Registration Adjustment ............................................ 34
3-11. Auto Registration Error Code List ............................ 37
4. SAFETY RELATED ADJUSTMENTS
4-1. HV Regulation Circuit Check andAdjustment ......... 38
4-2. HV Hold Down Circuit Operation andAdjustment .. 38
4-3. +B Max Voltage Confirmation .................................. 38
4-4. +B OVP Confirmation .............................................. 39
5. CIRCUIT ADJUSTMENTS
5-1. TV Input Sub ContrastAdjustment
(VPNT-SCON) .......................................................... 40
5-2. Video Input Sub-HUE and Sub-Color Adjustment
(VPNT-SHUE, SCOL) .............................................. 40
5-3. Component Input Sub-HUE and SubColorAdjustment
(DAC-UVSH, UVSC) ............................................... 40
5-4. P & P Sub Contrast Adjustment (SC-SYDR) ............ 40
5-5. Sub-HUE, Sub-Color and Main Contrast Adjustment
(MC-MYDR, MSHU, MSCL, SC-SSHU, SSCL) .... 41
5-6. Bar Display Position Adjustment (OP-DISP) ........... 41
5-7. PIP Position Adjustment (PI-PIPH, PIPV)................ 41
7. DIAGRAMS
6-1. Block Diagram (1)..................................................... 43
Block Diagram (2)..................................................... 45
Block Diagram (3)..................................................... 51
Block Diagram (4)..................................................... 55
Block Diagram (5)..................................................... 57
6-2. Frame Schematic Diagram ........................................ 61
6-3. Circuit Boards Location ............................................ 64
6-4. Printed Wiring Boards and Schematic Diagrams ...... 64
• A (1/3)Board ....................................................................... 65
• A (2/3)Board ....................................................................... 69
• A (3/3)Board ........................................................... 73
• G Board................................................................... 81
• CG Board ................................................................ 88
• CR Board ................................................................ 88
• CB Board ................................................................ 89
• HA Board ................................................................ 91
• HC Board ................................................................ 91
• HB Board ................................................................ 92
• FA Board ................................................................. 93
6-5. Semiconductors ......................................................... 94
7. EXPLODEDVIEWS
7-1. Cover (KP-43T70K/43T70T).................................... 96
7-2. Cover (KP-48VS70K) ............................................... 97
7-3. Cover (KP-53VS70K/VS70T) .................................. 98
7-4. Chassis (KP-43T70K/43T70T) ................................. 99
7-5. Chassis (Except KP-43T70K/43T70T) ................... 100
7-6. Picture Tube ............................................................ 101
8. ELECTRICAL PARTS LIST ................................. 102
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADINGAND MARK !ONTHE
SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE
PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE
THESECOMPONENTS WITH SONY PARTS WHOSE PART NUM-
BERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLE-
MENTS PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT
ARE CRITICALTO SAFEOPERATIONARE IDENTIFIED IN THIS
MANUAL. FOLLOW THESE PROCEDURES WHENEVER CRITI-
CAL COMPONENTS ARE REPLACED OR IMPROPER OPERA-
TION IS SUSPECTED.