Sony KP 48S70 Training Manual Download Page 80

Page: 80 / 101

Model:KP-43T70, KP-46C70, KP-48S70, KP-48S72, KP-48V80, KP-53N74,
KP-53S70, KP-53V80, KP-61S70, KP-61V80

No.

430

Subject:

Dark Screen, Picture Is Barely Visible.

Date:

December 3, 1999

Symptom:

(1321)

The screen is extremely dark and the picture is barely visible. This symptom may be
caused by a defective Q801.

Solution:

If the problem is caused by a defective Q801 replace it with a new type and change
the value of R830, R849, R850, and R851 as shown in the following table.

REF

FORMER

NEW

DESCRIPTION

PART NUMBER

DESCRIPTION

PART NUMBER

Q801

TRANSISTOR,

2SD601A

8-729-422-26

TRANSISTOR,

DTC144EKA

8-729-027-59

R830

RESISTOR,

100 OHM, CHIP

1-216-025-91

RESISTOR,

470 OHM, CHIP

1-216-041-91

R849

RESISTOR,

100 OHM, CHIP

1-216-025-91

RESISTOR,

470 OHM, CHIP

1-216-041-91

R850

RESISTOR,

100 OHM, CHIP

1-216-025-91

RESISTOR,

470 OHM, CHIP

1-216-041-91

R851

RESISTOR,

100 OHM, CHIP

1-216-025-91

RESISTOR,

470 OHM, CHIP

1-216-041-91

See next page for A-board component mounting locations.

csv-1

Sony Service Company
National Technical Services
A Division of Sony Electronics Inc.
Park Ridge, New Jersey 07656

CONFIDENTIAL

Service Bulletin
TV Products

SONY



Reference: F. Medeiros

PRINTED IN USA

Summary of Contents for KP 48S70

Page 1: ...l Circuit Description and Troubleshooting Course TVP 10 Projection Television RA 3 RA 4A Chassis Models KP 43T70 KP 53N74 KP 48V80 KP 46C70 KP 52S70 KP 53V80 KP 48S70 KP 61S70 KP 61V80 KP 48S72 KP 53XBR300 KP 61XBR300 ...

Page 3: ...61S70 KP 61V80 KP 48S72 KP 53XBR300 KP 61XBR300 Prepared by National Training Department Sony Service Company A Division of Sony Electronics Inc Course presented by _____________________________________ Date___________________________________________________ Student Name ___________________________________________ ...

Page 4: ...S SEL Service Company A Division of Sony Electronics Inc 1 Sony Drive Park Ridge New Jersey 07656 TVP100100 Printed in U S A ...

Page 5: ...0 Video Switching 7 KP 53V80 Video 4 and Video 5 Inputs 7 Composite Video and Y Switching 7 Color Switching 7 Comb Filter V Models 9 Table of Contents 8 Bit A D Converter 9 Picture and Picture V Models 11 Main Y Signals 11 Main C Signal 11 Main Decoder and YUV Switch 11 Picture and Picture Controller 11 Video Processing 13 YUV Controller 13 YCJ 13 On Screen Displays 15 Micro OSD 15 V Chip CC OSD 1...

Page 6: ...RGB Inputs Selected 29 DTV Video Processing 31 Circuit Description 31 VD Mute 33 RGB Mute 33 Appendix 1 Self Diagnostics i Standby Power Supply iii Converter Operation iii Regulation iii Over Current Protection OCP v Over Voltage Protection OVP v Secondary Output v Checking Q621 v Switching Power Supply vii Primary Rectifier vii Oscillator vii Regulation vii Soft Start ix Limit ix Troubleshooting ...

Page 7: ...xv Auto Focus xxv Circuit Description xxix BD Input xxxi Digital Convergence xxxi BD Output xxxiii IC1701 Regi Correction xxxiii Convergence Out xxxv Regi Mute xxxv Convergence Amp xxxv Appendix 2 Service Bulletins ...

Page 8: ... following features Flash Focus System Steady Sound Auto Volume Advanced Picture Stabilizer Shading Compensation 2 Tuner PIP Velocity Modulation Scanning Free Layout PIP Dynamic Focus Circuitry Flash Focus One button system that aligns the horizontal and vertical centering of the red green and blue tubes This system differs from pre vious Sony one touch systems in that it does not align the skew o...

Page 9: ...registration and auto focus circuits located on the BD board in the RA 4 chassis are used They are mounted to the A board in the RA 3 chassis The RA 3 chassis uses the same digital registration system used in the RA 4 chassis Digital registration allows the servicer to adjust the set using course and fine modes The fine mode uses a point system that allows 81 different points to be adjusted for ea...

Page 10: ...2 Inverting input IC651 3 Non inverting input is connected to ground If the voltage at IC651 2 becomes negative a HIGH will be output at IC651 1 This HIGH output is applied to the latch circuit and also to IC002 Sys tem Control on the A board for the Self Diagnostic feature If this occurs the Timer LED will flash twice Standby Unregulated OVP Current from T602 9 is rectified by D667 to produce a p...

Page 11: ...51 R688 D664 MTZJ 2 7A IC655 BAO5T 5V REG I G O R689 R662 R657 R654 R667 G BOARD PART OF T602 STB STANDBY 5V TO Q652 B RELAY DRIVE OVP OCP RELAY FROM11V LVP 18V OVP TO RY601 POWER RELAY 135V FROM D652 A AND D653 A STANDBY 5V RY DRIVE FROM Q652 C IC651 OVP OCP uPC393C 135V BRIDGE NEG POWER SUPPLY PROTECTION 11TVP10 1214 PROTECTION LATCH CN605 TO CN681 A BOARD R681 R660 TO Q656 B LIMITER ...

Page 12: ...he YUV controller and input the YCJ Keep in mind that this line will also carry the P P picture P P Processing The P P processing circuit uses inputs from both the main picture path and the sub picture path because of the Twin View functions The main video path can be from two sources They are Main Y and C if composite S video is used and component video If composite S video input is selected for ...

Page 13: ...YUV YUV Y UV COMPONENT YUV OR PIP YUV YUV MAIN YUV C Y TO TUBES R G B OSD RGB Y V MODELS VIDEO BLOCK 18TVP10 SUB YUV U BOARD 3D COMB FILTER Y SW INPUTS UV SWITCH YUV SW P P YUV CONTROLLER SWITCHING SUB DECODER MAIN DECODER YCJ PJED VCHIP SYSCON Y SW MAIN C UV Y YUV ...

Page 14: ...or component video inputs is selected the Y signal from the selected input is switched to IC1702 56 In this case a Y signal will be output from Q1724 Buffer to CN1701 18 Color Switching Composite video signals are processed by the Comb Filter on the A board The Comb Filter separates the Y and C components of the composite video signal The C output from the comb filter is coupled through CN1703 5 t...

Page 15: ... PR VIDEO 4 VIDEO 5 Q1724 BUFFER Q1723 BUFFER 32 31 SDA SCL 17 20 1 5 3 18 16 10 9 5 VOUT1 MAIN COMP V Y MAIN C COMB C SUB Y SUB C SUB U SUB V MAIN U MUV SW IC1702 A V SWITCH CXA1845 IC1704 YUV SWITCH NJM 2283M IC1703 YUV SWITCH NJM 2533M Q1726 1729 BUFFER Q1731 1734 BUFFER Q1732 1735 BUFFER KP53V80 VIDEO SWITCHING 3TVP10 1204 U BOARD S VIDEO MONITOR OUT J1706 TO CN401 A BOARD TO CN201 A BOARD TO ...

Page 16: ...nnected to IC202 27 OE IC202 Frame Memory is four Meg of EDO memory Since IC202 Frame Memory is EDO type memory it needs to be refreshed constantly This is done using the RAS Row Address Strobe and CAS Column Address Strobe lines IC204 10 MCAS outputs a CAS signal to IC202 28 and 29 UCAS and LCAS IC204 98 MRAS is output to IC202 14 RAS These lines are always active and keep the memory constantly r...

Page 17: ... CN1701 CN401 MAIN C MAIN Y IC204 3D COMB FILTER uPC64O81 MRAS X1 AYO MAO MA8 WE OE LCAS UCAS SDA SCL SDA SCL RAS I01 I016 VIN DB1 DB8 CLK PCL ALTE STO CSI IC203 A D CONVERTER uPC659 DYC0 2 DYC0 9 MIO 0 MIO 15 AO A8 IC202 4MB EDO MSM514265C TO IC1402 34 CVBS Y IN FL202 Q203 207 B P F FSCOUT FROM IC206 57 YCJ KILLER FROM IC002 30 CN201 FSC1 ACO COMB FILTER V MODELS 4TVP10 1200 84 3 1 7 2 Q210 BUFFE...

Page 18: ...ignals are output at IC1404 15 14 and 4 These signals are input back into IC1402 Main Decoder at pins 11 12 and 13 These signals are passed through an auto pedestal adjusting circuit and output at IC1402 8 7 and 6 These signals are then sent to IC1405 P P Controller Picture and Picture Controller The main picture YUV is input to IC1405 10 6 and 8 The Sub picture signals goes through a similar deco...

Page 19: ... Q1403 BUFFER SDA SCL SDA SCL V SYNC HSYNC CIN Y OUT U OUT V OUT X1401 503kHz CVBS YIN X1402 3 58MHz MY MU MV DY DU DV DFB DAO0 DAO7 DA17 DA10 AD0 AD8 SDA SDA SCL SCL SC DT WE RAS CAS SC DT WE RAS CAS YIN UIN VIN DYIN YOUT UOUT VOUT DUIN DVIN INH DVDSW IC1404 YUV SW BU4053 IC1401 2MVRAM IC1405 P P CONTROLLER SAB 9076 H SY SU SV SVSY NC P Y TO IC1407 1 B Y TO IC1407 3 R Y TO IC1407 2 TO IC1407 19 Y...

Page 20: ...YCJ for sync only The Y Out at IC1407 8 would be used for the picture The inputs at IC1407 16 Color and IC1407 17 Hue are DC voltages that control the level of Sub Color and Sub Hue for the PIP picture These voltage levels were preset at the factory and should not need adjustment However if necessary they can be changed by adjusting UVSC Color and UVSH Hue in the service mode YCJ Here we will be d...

Page 21: ...BUFFER TO V CHIP BGP SDA SCL SDA SCL PB Y PR Y DVD B Y MAIN C FROM IC1702 58 DU FROM IC1405 90 DV FROM IC1405 88 MAIN U FROM CN401 3 MAIN V FROM CN401 1 MAIN Y FROM Q1402 MAIN Y SW FROM IC1409 7 FULL DVD FROM IC1409 1 COLOR FROM IC1409 5 HUE FROM IC1409 6 DVD R Y DVD Y TV IN DL YSW YSW COLOR HUE YOUT RYOUT BYOUT TVOUT CLAMP EY IN ERY IN EBY IN C IN Y IN CN204 ROUT GOUT BOUT IKIN IC206 YCJ CXA2147 ...

Page 22: ... beneath the OSD This is evident in the Program Palette Menu when the video can be seen in the back ground while the menu is superimposed over it The YS signal is input from IC002 36 to IC206 13 The YM signal is output from IC002 37 to IC206 12 The main OSD can be muted using Q011 Q012 and Q013 These mute transistors are controlled by IC002 35 Micro I Main OSD will be muted when the PJ OSD is in o...

Page 23: ...Y FROM Q1402 MAIN Y BUFFER VIDEO R G B BOX 15 14 SDA SCL PJ OSD FROM A BOARD PJED BLOCK RIN GIN BIN YM YS IC206 YCJ CXA2147 Q008 BUFFER Q009 BUFFER Q010 BUFFER Q014 BUFFER Q015 BUFFER OSD ALL MODELS 7TVP10 1201 MICRO R FROM IC002 32 MICRO G FROM IC002 33 MICRO B FROM IC002 34 MICRO I FROM IC002 35 OSD YS FROM IC002 36 DISP YM FROM IC002 37 ROUT 20 24 26 GOUT BOUT TO CN731 CB BOARD VIA CN204 A BOAR...

Page 24: ...al applied to G1 that makes the picture darker during certain portions of the picture If this shading input is missing you may see an imbalance in color on either the right or left hand sides of the screen G2 is also a control grid used to limit the acceleration of electrons as they travel through the neck of the tube These changes in the acceleration of the beam change the picture brightness Each...

Page 25: ... Q733 R741 R742 L731 R736 R739 200V D732 C735 CN731 FROM A BD CN204 R736 C734 R737 R746 Q734 R747 D735 R743 CN732 IkR IkB 9V CN737 TO FOCUS BLOCK C737 R744 CN736 CN735 CN734 TO G BOARD CN503 CG BOARD 9 CRT DRIVE CG 10TVP10 1213 1 R733 Q731 R735 R753 CLK C733 D731 Q722 D733 D734 CN733 G IK TO CR BOARD CN702 TO CB BOARD CN762 ...

Page 26: ...uses inputs from only the sub picture path The main video path can be from two sources They are Main Y and C or component video If composite S video input is selected for sub picture input to PIP it is first decoded to YUV by the Sub Decoder and applied to the YUV switch If a component video input is chosen the Y signal is applied to the YUV switch along with the UV signals from the component inpu...

Page 27: ...TCHING MONITOR OUT CV C MC RGB RGB RGB YUV CONTROLLER YUV SW YUV YUV YUV YUV YUV SUB DECODER YCJ R G B TO C BOARDS PIP OR COMP SYNC TO DEFLECTION PIP MY Y Y SW UV COMPONENT Y SC SY OSD C M H SYNC MY Y S MODELS VIDEO BLOCK 17TVP10 INPUTS SUB UV MAIN UV YUV SW ...

Page 28: ...site video inputs are input to IC1101 A V Switch Whichever input is chosen is output at IC1101 41 This signal is sent to Q1103 and Q1104 Buffer and then the filter network consisting of Q1701 FL1701 Q1702 and Q1703 After filtering the signal is input to IC1702 Comb Filter There is also a 3 58 MHz signal input to IC1702 11 CK In from IC206 YCJ The comb filter separates the Y and C signals in the co...

Page 29: ...1 Y2 Y3 Y4 C1 C2 C3 IC1101 AV SWITCH CXA2079Q MAIN Y TO IC1901 19 23 YUV CONTROLLER TVIN DVD Y MAIN C TO IC206 64 YCJ CIN TO IC1902 30 SUB DECODER CIN TO IC1903 1YUV SWITCH DYIN IC1902 34 SUB DECODER YIN AND IC1602SUB V CHIP FSC OUT FROM IC206 57 TO J1105 MONITOR OUT YUV MUTE FROM Q1110 FROM MAIN TUNER FROM J1102 FROM CN1702 5 FROM J1101 FROM SUB TUNER S VIDEO INPUTS Q1701 FL1701 Q1702 Q1703 Q1103...

Page 30: ...hen input to IC11903 2 12 and 5 IC1902 has another set of YUV signals input at pins 1 13 and 3 The Y signal is the SY signal The Sub U and V signals come from the Video 3 component input at J1106 IC1903 9 10 and 11 are connected to IC1904 3 DVD SW IC1904 is a D A Converter that outputs a voltage level dependent on the data it receives This voltage level selects which input is used for the sub pic ...

Page 31: ...DVD SW 2 FROM IC1904 3 RY IN RU IN RV IN RY OUT RU OUT RV OUT XNTSC APC CERA SDA SCL VSYNC H SYNC SDA SCL VOUT UOUT YOUT X1902 3 58MHz X1901 503 5kHz VOUT UOUT YOUT DVD SW DV IN DY IN DU IN YOUT UOUT VOUT SDA SCL SDA SCL Y IN U IN V IN X IN XQ SEL V IN U IN Y IN SUB Y TO IC602 SUB V CHIP TO IC1901 6 YUV SW TO IC1901 3 TO IC1901 2 IC1902 SUB DECODER CXA2019 IC1905 PIP PROCESSOR SDA9288 PICTURE IN P...

Page 32: ... to converge the set in the coarse and fine modes The fine mode uses a point to point system for adjusting It is the same system used in the RA 3 chassis High Performance Video Processor 3D Digital Comb Filter Brightview Dual Component Screen The screen contains a Thin Film Fresnel that brightens and sharpens the picture and a Fine Pitch Lenticular screen that achieves higher resolution by using b...

Page 33: ... be hidden If correction was not made these lines would be visible at the top of a 16 9 picture This circuit takes the IK reference pulses and CC data and puts them in the normal 4 3 overscan area by placing a pulse into the vertical drive signal The following are minor circuit differences that will not be covered in this manual The component values in the H deflection circuit have been changed be...

Page 34: ...gnal is selected is output to IC1008 Main CPU for V Chip CC The V Chip CC Data is returned to IC1307 to be output as part of the main YUV signal The outputs from IC1307 YUV Switch are then input to the BR board DRC and the BM board MID The BR board outputs 960I signals which are the main video signals and are then input to IC511 Video Pro cessor The BM board is used for PIP and Twin View functions...

Page 35: ...MAIN Y COMP MAIN C IC1305 MAIN CHROMA DECODER IC1307 YUV SW CCD MIX C BR BOARD YUV IC1008 MAIN CPU IC2402 3D COMB FILTER MAIN Y MAIN Y YUV BM BOARD CCD V CHIP OSD Y FOR V CHIP RGB BUFFER IC511 VIDEO PROCESSOR IC1004 OSD PROCESSOR VIDEO 5 DTV INPUT DTV YUV RGB MAIN YUV PIP YUV CV FOR PIP OSD YUV RGB RGB TO TUBES VIDEO 4 COMPONENT RA 4A VIDEO PATH BLOCK 14TVP10 BA BOARD IC1403 MAIN YUV SELECT RGB PJ...

Page 36: ...curs The YUV signals that were input back into IC511 are processed and output as RGB to the tubes The H and V sync from the Y signal is separated and output to the deflection circuits The Y signal input with U and V signals input to IC1403 Main YUV Select is switched through to IC1303 IC1403 selects this signal because of the O DTV input received from IC1008 Main CPU The signal is passed by IC1303...

Page 37: ...W IC1303 SW IC1008 MAIN CPU DTV SYNC V5 DTV INPUT IC511 VIDEO PROCESSOR YUV H V SYNC TO DEFLECTION CIRCUITS TO TUBES 12 H SYNC O720P FROM OSD CPU IC1009 61 TO IC515 FOR AUDIO SWITCHING IVP ODTV VIN Y Y Y DTV VIDEO PROCESSING BLOCK 16TVP10 YUV Y 480I TO BR BOARD YUV ...

Page 38: ...tching IC that switches between the YUV which came from the Video 5 DTV input and the inputs from Video 4 These signals are input at IC1403 pins 3 1 and 13 The inputs selected are dependent upon the inputs at IC1403 pins 9 10 and 11 If the input to these pins is Low the DTV inputs are selected and if the inputs are High then the Video 4 component inputs are selected In this case the input would be...

Page 39: ...OM DTVIN J501 Y G PB B PR R BUFFER BUFFER BUFFER 1 3 5 DTV VIDEO PROCESSING BUFFER Q1308 1309 IC1307 MAIN YUV SW CXA2119 7 6 5 22 IC1403 MAIN YUV SELECT MC14053BF 3 1 13 4 15 14 9 10 11 25 J503 YUV4 INPUT 5 2 12 Q1420 O DTV FROM OC1008 3 IC1303 SW NJM2533 1 2 3 7 TO IC1008 22 MAIN CPU VIN FOR VCHIP O 720 P FROM IC1009 61 CN503 TO CN7101 CR BOARD 15TVP10 Q1312 ...

Page 40: ... outputs from changing state IC1609 11 QD is LOW for the first 7H of the VTIM signal and HIGH for the rest The signal from IC1609 15 RCO is input to IC1608 9 Load The signals from IC1609 11 are input to IC1608 1 CLR CLR disables the IC1608 outputs when it is LOW Therefore for the first 7H the output at IC1608 12 will be LOW When IC1608 1 goes HIGH the outputs are enabled and the signal at IC1608 1...

Page 41: ... BLK PULSE CHANGE RCO ENT ENP CLR LOAD Q2 IC1608 TC74HC 163AF BLK PULSE CHANGE DEF 5V 10 10 C1648 C1650 C1651 R1667 Q1629 R1664 R1665 R1676 R1677 Q1630 Q1621 R1662 C1649 C1647 TO IC1625 AND GATE FOR SCP TO IC518 5 VD DRIVE AMP IN V SAW AMP OUT FROM IC514 1 VD MUTE 13TVP10 Q1631 ENP A B C D A B D C IC1623 D1634 CLR R1678 DEFLECTION 5V R1661 7 11 Q3 TO RGB MUTE IC1623 ...

Page 42: ...APPENDIX 1 ...

Page 43: ...s 3 times 4 times Lamp OFF 3 0 seconds Lamp ON 0 3 seconds Lamp OFF 0 3 seconds If the problem is intermittent and you can get the set to operate you can display a menu showing the number of times failures have occurred This is done by pressing the following sequence of buttons on the remote Display Channel 5 Vol Power The display will look as follows SELF CHECK 2 B OCP XX 2 B OCP XX 3 B OVP XX 4 ...

Page 44: ...ii ...

Page 45: ...due to C630 As C630 charges it reduces the voltage at Q621 G Once this voltage falls below a certain threshold Q621 Converter turns OFF Once Q621 Converter turns OFF all polarities are reversed This rever sal of polarity helps speed up turn OFF of Q621 D623 along with C631 and R640 form a snubber network voltage clamp This network clamps excessive voltage overshoot caused by the collapsing magneti...

Page 46: ... SIDE R631 R636 Q622 PROT C699 C630 R632 D698 D624 D699 MTZ T 77 15 R633 R634 D626 RD6 2ESB2 C635 R638 C633 D627 C636 T621 SRT D628 C637 G BOARD IC622 5V REG BAO5T CN641 C650 I O G STANDBY 5V TO A BOARD CN1641 TO RY600 POWER RELAY 6 5 4 3 2 1 11 10 9 8 STANDBY SUPPLY 3 CTV26 1187 10 D D625 S 7 2VDC TO Q646 E BACKUP 12 28 99 ...

Page 47: ... Secondary Output The power coupled through T621 SRT places a voltage on T621 9 that when rectified and filtered by D628 and C637 is 7 2 volts This voltage is constant due to the regulation circuit on the primary side of T621 SRT This 7 2 volts is applied to Q646 E for backup during the start of regula tion by the regular power supply It is also applied to IC622 5 Volt Regulator which regulates it...

Page 48: ... SIDE R631 R636 Q622 PROT C699 C630 R632 D698 D624 D699 MTZ T 77 15 R633 R634 D626 RD6 2ESB2 C635 R638 C633 D627 C636 T621 SRT D628 C637 G BOARD IC622 5V REG BAO5T CN641 C650 I O G STANDBY 5V TO A BOARD CN1641 TO RY600 POWER RELAY 6 5 4 3 2 1 11 10 9 8 STANDBY SUPPLY 3 CTV26 1187 10 D D625 S 7 2VDC TO Q646 E BACKUP 12 28 99 ...

Page 49: ...with a black raster Start Up The current path for initial start up of the oscillator is through IC601 2 through the winding of pins 2 and 1 of T604 the winding of pins 6 and 5 of T605 and then through C621 When current flows through this path a magnetic field is created in the windings of T604 This field continues to grow until C621 is fully charged After C621 is fully charged the mag netic fields...

Page 50: ...viii ...

Page 51: ...harging This causes the voltage at the positive capacitor terminal to rise causing Q654 to decrease conduction less dc current flows through the trans former control winding the oscillator frequency decreases and the secondary voltage increases further C666 continues to charge and the secondary voltages continue to rise until the capacitor charges to the point that its voltage potential is the sam...

Page 52: ...x ...

Page 53: ...r R608 open you should follow the above proce dure RA 2 Chassis Power Supply Output Voltages CN653 and A Board Unplugged Primary Gnd D602 neg end Secondary Gnd Ground rail on G Board Variable AC Input Oscillator Voltage Oscillator Frequenc y 135 30 15 15 11 5 5 Stand by 12V 20Vac 50 Vp p 72 kHz 48 7V 14 5V 5 0V 3 6V 4 5V 2 1V 35V 2 7V 30Vac 70 Vp p 84 kHz 63 0V 18 5V 5 8V 3 7V 5 8V 2 5V 60V 4 6V 4...

Page 54: ...xii ...

Page 55: ...xiii L601 T605 1 T604 1 IC651 IC653 CN653 1 IC655 RY601 T603 1 3 4 Hot Ground TVP07GBPS ...

Page 56: ...xiv IC655 CN653 CN507 IC652 IC653 IC601 R608 TVP07GPSTOP ...

Page 57: ... vp p spikes are output and applied to the yokes and Flyback Transformer T504 Also a sample of this pulse is sent back to the Y C JungleIC301 36 HP Hoff This pulse is compared to the reference created by X304 for phase correction of the horizontal oscillator The HP pulse is also sent to IC001 System Control for OSD positioning and IC802 Wave Generator See Waveform D Pincushion The purpose of the p...

Page 58: ...xvi ...

Page 59: ... is necessary because the red and blue tubes are at opposite angles to the screen in reference to the green tube which is straight Therefore by applying DC voltages of opposite polarities with reference to the center tap we are centering red and blue to green If you place the negative lead of your DVM to pin 8 of T504 FBT and the positive lead on D514 Cathode or D515 anode you should read 4V and 4...

Page 60: ...xvii ...

Page 61: ...xix CN502 CN503 CN504 Q505 CN653 Q501 Q502 TVP GBVT ...

Page 62: ...xx T501 1 T502 1 Q505 L505 1 CN504 1 CN502 1 T504 CN503 1 Q502 Q501 TVP07GBHV ...

Page 63: ...nal output from pin 5 is about 55Vp p This is possible because IC1501 contains a voltage boost circuit IC1501 3 is used as a flyback supply and boost the positive supply on the output to 45V A sample of this pulse is used to create VP The output signal swings from 10V to 45V The vertical drive signal is then sent through L1501 to the three deflection coils via CN1501 The coils are con nected in se...

Page 64: ...xxii ...

Page 65: ...he P Bus to an IC which outputs the correct waveforms These waveforms are output to the Sub Deflection amplifiers and applied to the sub yokes Auto Focus Auto Registration The Auto Focus button on the front of the set allows the customer to adjust the skew and centering of the three colors at the touch of a button When Auto Focus is selected the PJED OSD sends out signals which are sent through a ...

Page 66: ...xxiv ...

Page 67: ...the system does not pick a new optimum value when the customer uses it but rather changes centering and skew adjustment data to get an optimum sensor reading The drawing below shows the position of the sensors around the screen 5 3 0 2 7 4 1 6 SCREEN 0 UPPER SENSOR 1 LEFT SENSOR 2 RIGHT SENSOR 3 LOWER SENSOR 4 UL SENSOR 5 UR SENSOR 6 LL SENSOR 7 LR SENSOR When Auto Focus button is pressed Pattern ...

Page 68: ...ses the Auto Focus button the system will change the convergence data to receive the optimum value at the A D converter 250 1000 900 800 700 600 500 400 300 200 100 0 0 10 20 30 40 50 60 200 150 100 50 0 A A A B B 0 5mm BV CENT mes ratio A D data mes_data0 mes_data1 mes_rati main YES YES NO NO Initial settings H SIZE enlargement Dark current measurement G VCENT alignment SKEW measurement R VCENT V...

Page 69: ...STEP ADJUST Measure 4V 4V Measure 4V 4V Did CENT SKEW measurement exceed center point 4STEP change in CENT SKEW Did CENT measurement exceed center point 1STEP change in CENT Did SKEW measurement exceed center point 1STEP change in SKEW The flowchart below left shows the steps taken during the adjustment portion of the previous flowchart As these adjustments are performed the convergence data value...

Page 70: ... 10 Sensor Output Level Low Check wiring beam position sensor 20 Sensor Output Level High Check OP amp circuit 30 Adjustment Loop Counter Overflow 0 CENT V 1 CENT H 2 SKEW V 3 SKEW H 40 Regi Data Overflow Same as Loop Counter Overflow 50 Regi Data Overflow Same as Loop Counter Overflow 60 Offset Overflow Same as Loop Counter Overflow Check beam position If need adjust PWM2 for H error V CENT main ...

Page 71: ...nsistors Q1609 through Q1616 To ensure precise measurements each sensor also has its own reset line that grounds the peak hold circuit every vertical blanking pulse The top left right and bottom sensors outputs are applied directly to the BD board The four corner sensors are applied to a switch The switch is necessary because the PJED CPU only has six A D inputs Since we do not need to use the cor...

Page 72: ...xxx ...

Page 73: ...nging the skew data tilts the picture on its vertical or horizon tal axis Size The effect of the horizontal size control is to change the box width from the center outwards Linearity The linearity control changes the linearity or the width of the boxes on the left side of center as compared to the right While changing the linearity control if the box width on the right side were getting smaller th...

Page 74: ...xxxii ...

Page 75: ...put to IC1702 2 IC1702 is a filter amplifier outputs the RH signal to CN523 on the A board The Green Vertical Output is input to IC714 14 RSI and IC720 14 RSI The analog signals are output from pin 6 of each of these ICs They are combined and input to IC1708 2 IC1708 is a filter amplifier which outputs the GV signal to CN523 on the A board The Green Horizontal Output is input to IC714 15 LSI and I...

Page 76: ...xxxiv ...

Page 77: ...o the D board This LOW is applied to the base of Q5024 keeping it OFF If Q5024 is OFF then Q5025 and Q5027 are also OFF This causes IC5005 12 and 13 Mute to be 0 volts This will mute IC5005 and it will not output any signals After three seconds the Regi Mute output will go HIGH This causes Q5024 to turn ON This will cause Q5025 and Q5027 to turn ON This places 19 volts on IC5005 12 and 13 which en...

Page 78: ...xxxvi ...

Page 79: ...APPENDIX 2 ...

Page 80: ...ESCRIPTION PART NUMBER DESCRIPTION PART NUMBER Q801 TRANSISTOR 2SD601A 8 729 422 26 TRANSISTOR DTC144EKA 8 729 027 59 R830 RESISTOR 100 OHM CHIP 1 216 025 91 RESISTOR 470 OHM CHIP 1 216 041 91 R849 RESISTOR 100 OHM CHIP 1 216 025 91 RESISTOR 470 OHM CHIP 1 216 041 91 R850 RESISTOR 100 OHM CHIP 1 216 025 91 RESISTOR 470 OHM CHIP 1 216 041 91 R851 RESISTOR 100 OHM CHIP 1 216 025 91 RESISTOR 470 OHM ...

Page 81: ...ii Q801 R830 R849 R851 R850 KP 43T70 Service Manual Page 83 KP 48V80 Service Manual Page 88 A board Mounting Diagram Coordinates J 2 IC805 ...

Page 82: ...M Instruction Manual for operating instructions CSV 1 Sony Service Company National Technical Services A Division of Sony Electronics Inc Park Ridge New Jersey 07656 CONFIDENTIAL Service Bulletin TV Products SONY Rear Projection Models Model Chassis Type CPU Board CPU Ref CPU Reset pin EEPROM IC Ref DIP Switch 1 DIP Switch 2 DIP Switch 3 DIP Switch 4 KWP 65HD1 DR 1 A IC1008 9 IC5703 ON OFF OFF OFF...

Page 83: ...3S65 RA 2 A IC001 15 IC007 OFF OFF OFF OFF KP53V45 RA 2 A IC001 15 IC007 OFF OFF OFF OFF KP61S35 RA 2 A IC001 15 IC007 OFF OFF OFF OFF KP61S65 RA 2 A IC001 15 IC007 OFF OFF OFF OFF KP61V45 RA 2 A IC001 15 IC007 OFF OFF OFF OFF KP48V75 RA 2A A IC001 15 IC007 OFF OFF OFF OFF KP53V75 RA 2A A IC001 15 IC007 OFF OFF OFF OFF KP61V75 RA 2A A IC001 15 IC007 OFF OFF OFF OFF KP43T70 RA 3 A IC002 12 I OSC IC...

Page 84: ...ROT IC005 OFF OFF ON ON RA 4 BD IC1703 55 WR PROT IC1704 ON OFF ON ON KP61XBR200 RA 4 A IC1008 55 WR PROT IC1007 OFF OFF ON ON RA 4 BM IC009 55 WR PROT IC005 OFF OFF ON ON RA 4 BD IC1703 55 WR PROT IC1704 ON OFF ON ON KP53XBR300 RA 4A A IC1008 55 WR PROT IC1007 OFF OFF ON ON RA 4A BM IC009 55 WR PROT IC005 OFF OFF ON ON RA 4A BD IC1703 55 WR PROT IC1704 ON OFF ON ON This model uses two EEPROM Ics ...

Page 85: ...F OFF KV32TS46 AA 1 M IC101 36 IC102 OFF OFF OFF OFF KV32TW67 AA 1 M IC101 36 IC102 OFF OFF OFF OFF KV32TW68 AA 1 M IC101 36 IC102 OFF OFF OFF OFF KV32TW77 AA 1 M IC101 36 IC102 OFF OFF OFF OFF KV32TW78 AA 1 M IC101 36 IC102 OFF OFF OFF OFF KV32V15 AA 1 M IC101 36 IC102 OFF OFF OFF OFF KV32V16 AA 1 M IC101 36 IC102 OFF OFF OFF OFF KV32XBR37 AA 1 M IC101 36 IC102 OFF OFF OFF OFF KV27XBR45 AA 1A M I...

Page 86: ...F OFF OFF KV13V50 BA 1 A IC101 36 IC102 OFF OFF OFF OFF KV20M10 BA 1 A IC101 36 IC102 OFF OFF OFF OFF KV20TR23 BA 1 A IC101 36 IC102 OFF OFF OFF OFF KV20TR23 BA 1 A IC101 36 IC102 OFF OFF OFF OFF KV20TS29 BA 1 A IC101 36 IC102 OFF OFF OFF OFF KV20TS29 BA 1 A IC101 36 IC102 OFF OFF OFF OFF KV20TS32 BA 1 A IC101 36 IC102 OFF OFF OFF OFF KV20TS50 BA 1 A IC101 36 IC102 OFF OFF OFF OFF KV20V50 BA 1 A I...

Page 87: ...50 BA 1 A IC101 36 IC102 OFF OFF OFF OFF KV20V50 BA 1 A IC101 36 IC102 OFF OFF OFF OFF KV20V50 BA 1 A IC101 36 IC102 OFF OFF OFF OFF KV13M10 BA 2 A IC101 30 IC102 OFF OFF OFF OFF KV20S10 BA 2 A IC101 30 IC102 OFF OFF OFF OFF KV20S11 BA 2 A IC101 30 IC102 OFF OFF OFF OFF KV13M20 BA3 A IC001 30 IC003 OFF OFF OFF OFF KV13M30 BA3 A IC001 30 IC003 OFF OFF OFF OFF KV13M31 BA3 A IC001 30 IC003 OFF OFF OF...

Page 88: ...003 OFF OFF OFF OFF KV27V66 BA 4D A IC001 30 IC003 OFF OFF OFF OFF KV9PT50 BN1 A IC101 36 IC102 OFF OFF OFF OFF KV9PT60 BN1 A IC101 36 IC102 OFF OFF OFF OFF KV13VM40 CN 141 MA IC1701 43 IC1705 OFF OFF ON ON KV13VM41 CN 141 MA IC1701 43 IC1705 OFF OFF ON ON KV20VM40 CN 141 MA IC1701 43 IC1705 OFF OFF ON ON KV20VS40 CN 141 MA IC1701 43 IC1705 OFF OFF ON ON KV32XBR100 DA1 AB IC7001 36 IC7003 OFF OFF ...

Page 89: ...cond then color returns Solution If the customer should complain of the following symptoms please do the following 27 inch models 1 In the service Mode record on paper the following register information in both RF Video mode VP SHUE RF Data ______ Video Data _______ VP SCOL RF Data_______ Video Data ________ VP SSHP RF Data_______ Video Data_________ 2 1 Replace the CPU IC001 2 Enter the service M...

Page 90: ...RF Data ______ Video Data _______ DA 2COL RF Data ______ Video Data _______ DA 2SHU RF Data ______ Video Data _______ 2 1 Replace the CPU IC001 2 Enter the service Mode using the remote Then press 8 then Enter This will reset the CPU turning the set off then back on automatically 3 Re enter the Service Mode 4 In the RF mode replace the data in the 2SHU 2COL SSHP with the recorded data from the ori...

Page 91: ...also cause this problem to occur and the bottom left corner would show DTV FORMAT 1080i Solution If the customer complains of this problem change the value of R600 and R698 on the A board as shown in the following table REF FORMER NEW DESCRIPTION PART NUMBER DESCRIPTION PART NUMBER R600 RESISTOR CHIP 470 OHM 1 216 041 91 RESISTOR CHIP 1K 1 216 049 91 R698 RESISTOR CHIP 1K 1 216 049 91 RESISTOR CHI...

Page 92: ...m and replace any that are found to be defective REF FORMER NEW DESCRIPTION PART NUMBER DESCRIPTION PART NUMBER SG702 CR BOARD SPARK GAP 1 519 422 11 SPARK GAP 1 517 729 31 SG732 CG BOARD SPARK GAP 1 519 422 11 SPARK GAP 1 517 729 31 SG762 CB BOARD SPARK GAP 1 519 422 11 SPARK GAP 1 517 729 31 Q706 CR BOARD TRANSISTOR 2SA1091 O 8 729 200 17 SAME AS FORMER PART Q733 CG BOARD TRANSISTOR 2SA1091 O 8 ...

Page 93: ...3 254 255 CRT R CRT G CRT B A 1501 526 A A 1501 522 A A 1501 527 A 53S70 S N 95XXX 253 254 255 CRT R CRT G CRT B 8 733 572 05 8 733 570 05 8 733 575 05 53N74 253 254 255 CRT R CRT G CRT B 8 733 572 15 8 733 570 15 8 733 575 15 8 733 572 05 8 733 570 05 8 733 575 05 61S70 253 254 255 CRT R CRT G CRT B 8 733 573 15 8 733 570 15 8 733 576 15 8 733 573 05 8 733 570 05 8 733 576 05 Note Two types of CR...

Page 94: ...from scratch The part number for the NVM Jig is T 935 010 91 List price is 160 00 HARDWARE Green LED Read light indicator Yellow LED Write light indicator Red LED Power light indicator Read Switch Toggle push button Switch for Reading from Target NVM Write Switch Toggle push button Switch for Writing to Target NVM Toggle switch Power switch Connector RJ45 connector for both the SOIC and DIP cables...

Page 95: ...and select first bus by moving switch in the up position second bus is selected by placing switch in the down position 5 volts and gnd are supplied by the jig for power and signal setting purposes PLEASE NOTE Power and GND are provided from the JIG The RESET pin on the Microcontroller will need to be tied LOW A test clip is provided on the connector for this purpose There is a special note at the ...

Page 96: ...it on and then back off again and try reading again This error will occur when the NVM has not acknowledged any of the addresses for our NVMs These addresses range from A0 hex to AE hex When communication has been interrupted between the JIG and NVM And when the data does not compare properly between the JIG and Target NVM AFTER GETTING AN ERROR INDICATION Press one of the keys once for a duration...

Page 97: ...ire pullups NOTES If you press either key the software will start the process of either writing or reading RA 4 XBR OPTIONS With the RA4 you will need to ground the WP lines BD Board pin 55 IC1703 PJED CPU A Board pin 55 IC1008 Main CPU BM Board Grounding 55 IC1009 Pull ups will be needed with the RA 4 model on all boards There are no pullups close to the NVM chip on any of the boards On earlier m...

Page 98: ...ine pin 55 IC805 PJED CPU and supply 5 from the NVM reader writer to pin 41 and 58 IC805 PJED CPU With the RA3 Main CPU NVM you will need to ground the CPU crystal pin 12 IC002 Main CPU Also it will be necessary to use the NVM reader writer 5 supply for 5 standby pin 41 IC002 Main CPU ...

Page 99: ...n and Part Number Model Ref Description Part Number KP 53N74 102 Contrast Screen 4 071 582 11 KP 53N74 KP 53S70 103 Fresnel Screen 4 070 602 01 KP 61S70 103 Fresnel Screen 4 066 082 01 KP 53N74 104 Lenticular Screen 4 064 343 11 KP 53S70 104 Lenticular Screen 4 063 555 01 KP 61S70 104 Lenticular Screen 4 070 283 01 csv 1 Sony Service Company National Technical Services A Division of Sony Electroni...

Page 100: ...ion and Part Number Model Ref Description Part Number KP 48S72 52 Contrast Screen 4 064 651 01 KP 46C70 53 Fresnel Screen 4 057 324 02 KP 48S70 KP 48S72 53 Fresnel Screen 4 058 455 02 KP 46C70 54 Lenticular Screen 4 063 603 01 KP 48S70 54 Lenticular Screen 4 063 566 01 KP 48S72 54 Lenticular Screen 4 070 235 01 csv 1 Sony Service Company National Technical Services A Division of Sony Electronics I...

Page 101: ...ase see the table below for the correct screen Ref Description and Part Number Model Ref Description Part Number KP 43T70 2 Contrast Screen 4 070 286 01 KP 43T70 3 Fresnel Screen 4 070 285 11 KP 43T70 4 Lenticular Screen 4 070 284 11 CSV 1 Sony Service Company National Technical Services A Division of Sony Electronics Inc Park Ridge New Jersey 07656 CONFIDENTIAL Service Bulletin TV Products SONY R...

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