Sanyo DS20424 Service Manual Download Page 22

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FOR CONTINUED PROTECTION AGAINST A RISK OF FIRE,
REPLACE ONLY WITH THE SAME TYPE 4A, 125V FUSE.

ATTENTION : POUR MAINTENIR LA PROTECTION CONTRE
LES RISQUES D’ INCENDIE UTILISER UN FUSIBLE DE
RECHANGE DE MEME TYPE 4A, 125V.

4A 125V

CAUTION

MAIN BOARD COMPONENTS AND TEST POINTS GRID LOCATIONS

Part

Loc.

D002

D429

D612

D806

IC001

IC501

IC601

IC681

IC801

IC802

IC1001

IC3401

Q001

Part

Loc.

Q005

Q131

Q132

Q401

Q402

Q486

Q490

Q601

Q613

Q627

Q681

Q693

Q695

Part

Loc.

Q831

R512

R513

TE7

TP7

TJ1

TJ6

TP16

TP50

TP51

TP317

TP318

Summary of Contents for DS20424

Page 1: ...structions 2 Service Adjustments 3 10 Service Hints 11 Mechanical Disassemblies 12 Chassis Electrical Parts List 13 19 Cabinet Parts List 20 Component and Test Point Locations 21 24 Schematic Insert 25 32 Schematic Notes 25 Pin Layouts 25 Capacitor and Resistor Codes 25 Block Diagram 26 27 Voltage Charts 26 27 Waveforms 28 Schematic Diagrams 29 32 AS FILE NO SERVICE MANUAL Remote Control Color Tel...

Page 2: ...inet screw heads metal overlays control shafts etc Measure the AC voltage across the 1500 ohm resistor The AC voltage should not exceed 750 mV A reading exceeding 750 mV indicates that a dangerous potential exists The fault must be located and corrected Repeat the above test with the receiver power plug reversed NEVER RETURN A RECEIVER TO THE CUSTOMER WITHOUT TAKING THE NECESSARY CORRECTIVE ACTION...

Page 3: ...ETUP Note When IC802 EEPROM is replaced change the following initial reference data for proper TV operation before attempting service adjustments 1 Disconnect the AC power cord AC 120V line 2 While pressing the MENU key reconnect the AC power cord The Service Menu display will now appear 3 Select NO 3B SCN Sub Contrast with or key Adjust the data with or key for 18 4 Select NO 3C SCO Sub Color wit...

Page 4: ...r key Adjust the data with or key for C0 19 Select NO 8A ROV RF Over Shoot Adjust with or key Adjust the data with or key for 04 20 Select NO 8B RPR RF Pre Shoot Adjust with or key Adjust the data with or key for 20 21 Select NO 8D HR H Display Position with or key Adjust the data with or key for 24 22 Select NO 8E SBO Sub Bright Offset with or key Adjust the data with or key for 04 23 Press the M...

Page 5: ... 0 4A GB 00 00 00000000 Green Bias 7 0 4B BB 00 00 00000000 Blue Bias 7 0 4C RD 40 40 01000000 Red Drive 6 0 4D GD 08 08 00001000 Green Drive 3 0 4E BD 40 40 01000000 Blue Drive 6 0 4F SBI 40 30 00110000 Sub Bias 6 0 50 Not Used 51 Not Used 52 OSD 03 03 00000011 On Screen Display Contrast 1 0 53 ABL5MSD4RTS3BAT 14 1C 00011100 ABL Defeat 5 MID Stop 4 RGB Temp 3 ABL Thresh 2 0 54 CRG 12 12 00010010 ...

Page 6: ...ystem 2 0 90 DCN 00 00 00000000 YUV Sub Contrast 6 0 91 DBR 00 00 00000000 YUV Sub Bright 6 0 92 DCL 00 00 00000000 YUV Sub Color 6 0 93 DTN 00 00 00000000 YUV Sub Tint 6 0 94 DSH 00 00 00000000 YUV Sub Sharpness 6 0 95 DCG 00 00 00000000 YUV Sub Coring 6 96 DVG 00 00 00000000 YUV Sub VM Gain 5 0 97 DHS 00 00 00000000 YUV Sub E W DC 5 0 98 DRY 0E 0E 00001110 YUV R Y Offset 3 0 99 DBY 90 90 1000011...

Page 7: ...will not operate properly BIT FUNCTION DATA 0 1 0 1 TV HOTEL MON N A N A 2 VIDEO MODE NONE YES 3 4 CLOCK N A N A 5 ASPECT RATIO NONE YES 6 NOT USED 7 SURROUND NONE YES Note 1 Red Blue Drive Adjustments in Service Menu NO A8 DRV Adjust Red and Blue Drive Levels alternately with 1 3 7 and 9 keys on the remote control See Figure 2 The Drive Level adjustment data will be written in the Service Menu No...

Page 8: ...NU key reconnect the AC power cord The Service Menu display will now appear 5 Select NO 42 VS Vertical Size with s or t key 6 Adjust the data with or key for full scan To turn off the Service Menu display press the MENU key VERTICAL CENTERING ADJUSTMENT 1 Tune receiver to an active channel 2 Check that picture is in the center of TV screen If picture center is too low change resistor R513 from 1K ...

Page 9: ... Check and Grayscale Adjustment must be completed before attempting high voltage Check 1 Connect high voltage voltmeter lead to ground and connect lead to anode of picture tube 2 Tune receiver to an active channel and confirm TV is operating properly 3 Eliminate the beam current by adjusting the contrast and brightness controls to minimum 4 Confirm high voltage is within 28 0 KV and 31 1 KV If rea...

Page 10: ... LEVEL ADJUSTMENT 1 Connect a signal to the antenna terminals with audio of 1 KHZ 100 modulation 2 Turn off the receiver and disconnect the AC power cord AC 120V line 3 Connect voltmeter RMS to TP317 and ground 4 While pressing the Menu key reconnect the AC power cord The Service Menu will now appear 5 Select NO 80 ATT Attenuation with the or key 6 Adjust the or key for a voltmeter reading of 400 ...

Page 11: ...f these failures remains uncorrected the CPU will shut off the power within three seconds Check the following if the unit is turned off by the power failure detector 1 Disconnect the AC power cord 120V AC line for at least 10 seconds 2 Connect a DC Voltmeter to the following TEST POINTS 3 Press the Power key and check for the proper voltage supplies 4 If any of these voltages is low the power fail...

Page 12: ...p these assemblies intact unless picture tube is being replaced Discharge the picture tube to the coating before handling the tube 1 Remove chassis see Chassis Removal instructions 2 Place cabinet s front face down on a soft surface 3 Remove the screw on each corner of the picture tube and GENTLY lift the picture tube out of the cabinet 4 Install a replacement picture tube in reverse order Properl...

Page 13: ...P Pico Farad U Micro Farad Material CERAMIC Ceramic MT PAPER Metalized Paper POLYESTER Polyester MT POLYEST Metalized Polyester POLYPRO Polypropylene MT POLYPRO Metalized Polypropylene COMPO FILM Composite Film MT COMPO Metalized Composite STYRENE Styrene TA SOLID Tantalum Solid AL SOLID Aluminum Solid ELECT Electrolytic NP ELECT Non Polarized Electrolytic OS SOLID Aluminum Solid with Organic Semi...

Page 14: ... 3801 ELECT 1U M 50V C631 404 088 2909 CERAMIC 1000P M 250V 404 088 7102 CERAMIC 1000P M 250V C632 404 088 2909 CERAMIC 1000P M 250V 404 088 7102 CERAMIC 1000P M 250V C683 404 084 2804 ELECT 100U M 16V C693 404 086 5100 POLYESTER 0 1U J 63V C701 403 235 1109 CERAMIC 270P J 50V C702 403 069 8305 CERAMIC 0 01U Z 50V C711 403 235 1109 CERAMIC 270P J 50V C721 403 235 1109 CERAMIC 270P J 50V C742 403 0...

Page 15: ...MPG06G 407 124 6404 DIODE ERA18 04 D624 407 106 2806 DIODE RU3YX D625 407 129 7000 DIODE RU4AM LF L1 407 211 5808 DIODE FE201 6L43 D680 407 013 4306 DIODE 1S2076A 407 013 7109 DIODE 1S2473 408 008 2406 DIODE 1N4148 D683 407 013 4306 DIODE 1S2076A 407 013 7109 DIODE 1S2473 408 008 2406 DIODE 1N4148 D693 407 099 5600 ZENER DIODE MTZJ6 8A 6 8V D699 407 006 0100 DIODE ERA91 02 D801 407 013 4306 DIODE ...

Page 16: ...681 405 011 8401 TR 2SC1740S Q 405 011 8500 TR 2SC1740S R 405 011 8609 TR 2SC1740S S 405 012 2002 TR 2SC1815 GR 405 012 2101 TR 2SC1815 O 405 012 2309 TR 2SC1815 Y 405 020 7501 TR 2SC945A PA 405 020 7709 TR 2SC945A QA 405 020 7907 TR 2SC945A RA 405 151 8705 TR 2SC536NG NPA 405 157 0505 TR 2SC536NF NPA Q693 405 011 8401 TR 2SC1740S Q 405 011 8500 TR 2SC1740S R 405 011 8609 TR 2SC1740S S 405 012 200...

Page 17: ... 1 6W R422 401 052 6802 MT FILM 10K FA 1 6W R423 401 053 2605 MT FILM 3 3K FA 1 6W R426 401 027 5205 CARBON 680 JA 1 6W R428 401 025 1902 CARBON 15K JA 1 6W R471 401 006 7701 CARBON 1 JB 1 2W R472 401 067 3100 OXIDE MT 3 9 JA 2W R481 401 010 2600 CARBON 47 JB 1 2W R482 401 011 9004 CARBON 1 JB 1 4W R485 401 025 4606 CARBON 18K JA 1 6W R486 401 065 1801 OXIDE MT 12 JA 2W R487 401 026 6609 CARBON 39...

Page 18: ... 401 026 1000 CARBON 2 7K JA 1 6W R881 401 255 6500 MT GLAZE 100 JA 1 10W R882 401 255 6500 MT GLAZE 100 JA 1 10W R883 401 024 6700 CARBON 100 JA 1 6W R884 401 024 6700 CARBON 100 JA 1 6W R1001 401 255 6500 MT GLAZE 100 JA 1 10W R1002 401 256 2709 MT GLAZE 75 JA 1 10W R1003 401 255 6500 MT GLAZE 100 JA 1 10W R1004 401 256 2709 MT GLAZE 75 JA 1 10W R1006 401 255 6500 MT GLAZE 100 JA 1 10W R1007 401...

Page 19: ...68 7013 TUNER U V A700 610 316 6858 ASSY PWB SOCKET A1901 645 047 6228 UNIT REMOCON RECEIVER F601 423 007 1601 FUSE 125V 4A 423 007 1809 FUSE 125V 4A 423 018 8101 FUSE 125V 4A 423 029 8008 FUSE 125V 4A F601A 645 000 5077 HOLDER FUSE 645 016 0479 HOLDER FUSE F601B 645 000 5077 HOLDER FUSE 645 016 0479 HOLDER FUSE K701 645 028 0306 SOCKET CRT 8P 652 001 1472 SOCKET CRT 8P K1001 645 063 9616 JACK RCA...

Page 20: ...412 036 1805 SCREW 4X14 7 USED OR 411 078 1101 SCREW 4X14 7 USED 7 412 018 8402 SCREW 3X10 1 USED 8 610 306 5007 BUTTON UNIT 9 610 289 5148 CAP RC 10 610 317 4648 DEC SHEET 11 645 067 3818 SANYO BADGE 12 610 306 5342 DEC AV SHEET 13 610 306 5311 DOOR 610 316 6643 OWNER S MANUAL 645 065 6910 RC TRANSMITTER 645 065 6934 RC TRANSMITTER 610 312 0287 RC BATTERY COVER 610 312 0317 RC BATTERY COVER CABIN...

Page 21: ...614 C612 R607 L612 R606 R611 R613 D614 L611 Q611 R615 R692 Q612 C603 C604 R107 R430 R634 C609 D001 D408 L626 J618 C623 L413 R408 T401A R605 J606 J616 R635 R630 R610 J614 L602A C630 J690 R406 R699 R498 D699 R405A R405 K1001 IC801 X141 L131 C134 C201 C203 C204 C206 Q131 R204 C518 C519 C403 C401 R411 R412 R414 C143 C148 C214 C213 C212 C211 Q132 L132 X131 X201 C869 X801 J201 R203 J202 KS J803 R804 R86...

Page 22: ...A 125V 4A 125V CAUTION MAIN BOARD COMPONENTS AND TEST POINTS GRID LOCATIONS Part Loc D002 C3 D429 E2 D612 B5 D806 E3 IC001 F5 IC501 D2 IC601 C5 IC681 C6 IC801 F4 IC802 F4 IC1001 E3 IC3401 E5 Q001 D4 Part Loc Q005 D4 Q131 F3 Q132 E3 Q401 B2 Q402 C2 Q486 C4 Q490 D4 Q601 A3 Q613 A4 Q627 B6 Q681 C6 Q693 B5 Q695 B5 Part Loc Q831 D5 R512 E2 R513 E2 TE7 F2 TP7 F3 TJ1 C3 TJ6 D3 TP16 F3 TP50 A2 TP51 A2 TP3...

Page 23: ...3 C002 C001 J3401 J3402 J3404 C015 J017 R486 R489A R487 D486 J1011 J1004 R833 J144 D472 J446 R495A D422 D421 C421 R276 Q490 R499 D490 R488 C497 J492 J811 R1910 R1911 J808 J481 J809 J482 J608 R511A R489 A1901 J3471 L3401 D836 R832 R495 R472 C489 Q486 J502 L812 J842 J843 IC802 C806 C802 C811 C822 C829 D834 D843 L811 L801 R883 R884 J1013 J848 Q005 R006 Q001 J116 J117 J113 J114 C693 Q693 R694 D693 Q69...

Page 24: ...2 Q721A Q711A Q711 Q721 R707 R704 R721 R711 C702 R717 R727 SCREEN R701 R724 K7S R716 K7B GND L701 PICTURE TUBE SOCKET BOARD July 2004 2000 SMC Printed in U S A For parts or service contact 21605 Plummer Street Chatsworth CA 91311 U S A 300 Applewood Crescent Concord Ontario L4K 5C7 CANADA SANYO Fisher Service Corporation COMPONENT AND TESTPOINT LOCATIONS Cont ...

Page 25: ... X RADIATION NOMINAL 2ND ANODE VOLTAGE IS 29 1KV AT ZERO BEAM CURRENT AT 120 VOLTS AC LINE AND MUST NOT EXCEED 31 1KV UNDER ANY OPERATING CONDITION SEE HIGH VOLTAGE CHECK ON PAGE 9 1 1 1 1 TOP VIEW SIDE VIEW COUNT TERMINALS IN ARROW DIRECTION MARK E C B A K A K A K A K A K A K INFRARED EMITTING A ANODE K CATHODE INTEGRATED CIRCUITS TRANSISTORS 1 DIODES PHOTO COUPLERS B BASE C COLLECTOR E EMITTER E...

Page 26: ... R683 1 2DJ 2 7 R505 1 10GJ 330C R816 1 10GJ100C R881 1 10GJ4 7KC R809 1 10GJ 330KC R1102 1 10 GJ 18KC R517 D486 1 10GJ 470C R139 R D002 L625 EK2 2AE C503 EM1 LBWA C212 12V EM1 LBWA C134 EM10LBWA C516 EM1LBWA C012 2SD400E MP Q490 2SD400F MP 1 10GJ 75C R1106 KX3P 1 10GJ 1KC R143 X R513 SW1902 2SK2638 F82 Q601 KK0 01 LZB C216 1SJ39 R495 DJ1B R482 2SJ4 7 R497 PQ050EA1MXP IC681 1 2 3 1 10GJ3 9KC R3426...

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