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Sanyo DS32424 Service Manual

Remote control color television
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See also: Owner's Manual

SERVICE MANUAL

Contents
Safety Instructions . . . . . . . . . . . . . . . . . . 2
Service Adjustments . . . . . . . . . . . . . 3 - 10
Service Hints . . . . . . . . . . . . . . . . . . . . . . 11
Mechanical Disassemblies. . . . . . . . . . . 12
Chassis Electrical Parts List . . . . . . 13 - 25
Cabinet Parts List . . . . . . . . . . . . . . . . . . 26
Locations . . . . . . . . . . . . . . . . . . . 27 - 32
Schematic Insert . . . . . . . . . . . . . . . 33 - 40
Schematic Notes . . . . . . . . . . . . . . . . . 33
Pin Layouts . . . . . . . . . . . . . . . . . . . . . 33
Block Diagram . . . . . . . . . . . . . . . 34 - 35
Voltage Charts . . . . . . . . . . . . . . . 34 - 36
Waveforms. . . . . . . . . . . . . . . . . . . . . . 36
Main PC Board . . . . . . . . . . . . . . . 37 - 40
Audio/Video Board. . . . . . . . . . . . 39 - 40
CRT Socket Board . . . . . . . . . . . . . . . . 37
Pincushion Correction Board . . . . . . . 37
DS32424, G7ZEA, PRODUCT CODE 111372384
Remote Control Color
Television
AS
FILE NO.
DS32424
ORIGINAL VERSION
Chassis No. 32424-00
NOTE: Match the Chassis No. on
the unit's back cover with
the Chassis No. in the
Service Manual.
If the Original Version
Service Manual Chassis
No. does not match the
unit's, additional Service
Literature is required. You
must refer to "Notices" to the
Original Service Manual
prior to servicing the unit.

Specifications

Power Rating . . . . . . . . . . . . . . . . . . . . . 120V, 60Hz
Antenna Input Impedance . . . . . . . . . . . . . . . . . 75Ω
Receiving Channel . . . . . . . . . . . . . . . . 2 - 13 (VHF),
01, 14-94, 95-125 (CATV)
Remote Ready . . . . . . . . . . 39 Key Remote Control
Sound Output . . . . . . . . . . . . . . . . . . . . . . 3.0 W/CH
Intermediate Frequency
Picture IF Carrier . . . . . . . . . . . . . . . . . . 45.75MHz
Sound IF Carrier . . . . . . . . . . . . . . . . . . 41.25MHz
Color Sub Carrier . . . . . . . . . . . . . . . . . 42.17MHz
Picture Tube. . . . . . . . . . . . . . . . . . . A80ERF082X13
Semiconductors
Integrated Circuits. . . . . . . . . . . . . . . . . . . . . . . 13
Transistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Except within Tuner and RC Pre-Amp.
Cabinet Dimensions
Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 768 mm
Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . 732 mm
Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 577 mm
REFERENCE No.
(U.S.A.)
(CANADA)
100W (Avg), 2.5A (Max)
UHF/VHF/CATV
14 - 69 (UHF),
SM
780093

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Summary of Contents for Sanyo DS32424

  • Page 1: Table Of Contents

    Height ......732 mm Depth ......577 mm DS32424, G7ZEA, PRODUCT CODE 111372384 REFERENCE No.

  • Page 2: Safety Instructions

    SAFETY INSTRUCTIONS SAFETY PRECAUTIONS WARNING: The chassis of this receiver has a floating READING SHOULD NOT EXCEED 750 mV. AC VOLTMETER ground with the potential of one half the AC line voltage in (5000 ohms per volt or more sensitivity) respect to earth ground.

  • Page 3: Service Adjustments

    SERVICE ADJUSTMENTS GENERAL This set has an on-screen Service Menu system included in the CPU that allows remote operation for most of the service adjustments. To enter the Service Menu, first disconnect the AC power cord. Then while pressing the MENU key on the front control panel, recon- nect the AC power cord.
  • Page 4 SERVICE ADJUSTMENTS (Cont.) INITIAL BUS DATA SETUP (Cont.) 19. Select NO. 58 AFC7CBP5 (Auto Flesh / C Band Pass Filter) with key. Adjust the data with number keys for C0. 20. Select NO. 59 DIG6ABL5MSD4BAT (OSD D/A / ABL Defeat / Mid Stop / ABL Threshold) with key.
  • Page 5 Table 1. ON-SCREEN SERVICE MENU When IC802 (EEPROM) is replaced, check the bus data to confirm they are the same as below. The shaded menu should be checked and be set up or readjusted according to the procedures described in the following pages. Initial Setup Data marked with an * should be changed from Initial Reference Data.
  • Page 6 SERVICE ADJUSTMENTS (Cont.) Table 1. ON-SCREEN SERVICE MENU (Continued) INITIAL REFERENCE INITIAL SETUP INITIAL SETUP TITLE FUNCTION DATA HEX DATA HEX DATA BINARY 00100000 Wide Band 00100000 Spectral 00111100 Aspect Ratio(5) Comb Filter(4) Clock(3) Scan Velocity(2) 00101110 V Guide(7) Tone(6) AV(5) PIP(4) F/V(3) I-Ch(2) C En(1) C En Sel 00011000 PIP Up Vertical Position 10010011...
  • Page 7 DRIVE AND BIAS ADJUSTMENTS PROGRAM CODES The microprossesor used in this model is a multi-purpose Note 1. type and is used in several different models. To ensure Red/Blue Drive Adjustments in Service Menu NO. AF DRV: proper operation and the correct features for your particu- Adjust Red and Blue Drive Levels alternately with 1, 3, 7, lar model, the program codes must be correct.
  • Page 8 SERVICE ADJUSTMENTS (Continued) ANTENNA CONNECTIONS VERTICAL CENTERING ADJUSTMENT This receiver is designed for UHF/VHF reception. A 75 ohm 1. Tune receiver to an active channel. terminal is provided for UHF and VHF receptions. When 2. Check that picture is in the center of TV screen. If picture connecting a CATV antenna system, connect the 75 ohm center is too low, add resistor R513 (1K ohm 1W).
  • Page 9 GRAYSCALE ADJUSTMENT BRIGHTNESS LEVEL ADJUSTMENT 1. Connect a color-bar generator to the antenna terminals. Note: Grayscale Adjustment and High Voltage Check must be 2. Switch the generator to the white pattern. completed before attempting Brightness Level 3. Set the picture controls to the Sports level or Reset (use Adjustment.

  • Page 10: Input Level Adjustment

    SERVICE ADJUSTMENTS (Continued) PINCUSHION CORRECTION ADJUSTMENT MULTI-SOUND SECTION ADJUSTMENTS 1. Connect a color-bar generator to the antenna terminals Note: Multi-Sound Section must be adjusted after and select a crosshatch pattern. A101 (U/V Tuner), IC3401 (MTS Decoder), or IC802 2. Set the picture controls to the Sports level. (EEPROM) is replaced.

  • Page 11: Service Hints

    SERVICE HINTS POWER FAILURE DETECTOR This unit is equipped with a Power Failure Detector function included in the CPU which checks for an abnormal condition in the chassis power supplies, including the power supply derived from the Horizontal Output Transformer. If, while the power is on, a failure is caused by any of the following that results in a low voltage supply, the CPU will turn the unit off in 1.5 seconds to prevent further damage: •...

  • Page 12: Mechanical Disassemblies

    MECHANICAL DISASSEMBLIES CHASSIS REMOVAL CABINET BACK REMOVAL 1. Remove cabinet back. 1. Refer to Figure 1, remove 11 screws. 2. Discharge the picture tube anode (2nd anode lead) to the 2. Pull off cabinet back and remove. dag coating (picture tube grounding lead). 3.

  • Page 13: Chassis Electrical Parts List

    CHASSIS ELECTRICAL PARTS LIST CAUTION: To Protect against electrical shock and for continued product safety, refer to SAFETY PRECAUTIONS, X-RADIATION PRECAUTIONS, HIGH VOLTAGE HOLD-DOWN TEST, and PRODUCT SAFETY NOTICE on Page 2. PRODUCT SAFETY NOTICE PRODUCT SAFETY SHOULD BE CONSIDERED WHEN A REPLACEMENT IS MADE IN ANY AREA OF A RECEIVER. COMPONENTS INDICATED BY A STAR ( ) IN THIS PARTS LIST AND THE SCHEMATIC DIAGRAM DESIGNATE COMPONENTS IN WHICH SAFETY CAN BE OF SPECIAL SIGNIFICANCE.
  • Page 14 Schematic Schematic Part No. Description Part No. Description Location Location C253 404 084 3702 ELECT 0.47U M 403 392 8102 MT-POLYPRO 0.18U J 250V C256 404 084 3801 ELECT 1U M C419 403 158 9107 MT-POLYEST 2.2U K 100V C257 403 224 6108 CERAMIC 0.01U K...
  • Page 15 Schematic Schematic Description Description Part No. Part No. Location Location C613 403 061 9805 POLYESTER 0.047U J C1031 403 224 6108 CERAMIC 0.01U K 403 312 2104 POLYESTER 0.047U J C1032 404 084 3009 ELECT 220U M 404 086 6503 POLYESTER 0.047U J C1051 404 084 2705...
  • Page 16 Schematic Schematic Description Description Part No. Part No. Location Location C3426 403 299 1820 TA-SOLID 10U K D503 408 047 6205 ZENER DIODE MTZJ36A (36V) C3427 404 084 3801 ELECT 1U M D508 407 006 0100 DIODE ERA91-02 C3431 403 224 6009 CERAMIC 4700P K D601...
  • Page 17 Schematic Schematic Part No. Description Part No. Description Location Location D751 407 013 4306 DIODE 1S2076A L306 645 008 2856 INDUCTOR, 39U K 407 013 7109 DIODE 1S2473 645 016 3012 INDUCTOR, 39U K 408 008 2406 DIODE 1N4148 L401 645 052 5926 INDUCTOR, 3.3U, FILTER D801...
  • Page 18 Schematic Schematic Part No. Part No. Description Description Location Location L1706 645 008 2894 INDUCTOR, 5.6U K 405 173 9605 TR 2SA1235A1E 645 016 3104 INDUCTOR, 5.6U K 405 173 9704 TR 2SA1235A1F L1901 645 008 2894 INDUCTOR, 5.6U K Q301 405 014 4509 TR 2SC2412K-T-96-R...
  • Page 19 Schematic Schematic Part No. Part No. Description Description Location Location Q462 405 138 0906 TR 2SB1370-D 405 004 3208 TR 2SA564A-R(CU) 405 138 1002 TR 2SB1370-E 405 006 1806 TR 2SA933S-R 405 138 1101 TR 2SB1370-F 405 151 3304 TR 2SA608NF-NPA 405 138 1309 TR 2SB1565-E 406 000 6804...
  • Page 20 Schematic Schematic Part No. Part No. Description Description Location Location Q831 405 001 7407 TR 2SA1015-O(SAN) 405 012 2309 TR 2SC1815-Y 405 001 7605 TR 2SA1015-Y(SAN) 405 020 7501 TR 2SC945A-PA 405 004 3109 TR 2SA564A-Q(CU) 405 020 7709 TR 2SC945A-QA 405 004 3208 TR 2SA564A-R(CU) 405 020 7907...
  • Page 21 Schematic Schematic Part No. Part No. Description Description Location Location 405 157 0505 TR 2SC536NF-NPA NOTES: Read description of the Resistor as follows: Q1707 405 011 8401 TR 2SC1740S-Q 405 011 8500 TR 2SC1740S-R (Example) 405 011 8609 TR 2SC1740S-S CARBON 4.7K A 1/4W...
  • Page 22 Schematic Schematic Part No. Part No. Description Description Location Location R251 401 150 5905 MT-GLAZE 10K JA 1/10W R444 401 025 4606 CARBON 18K JA 1/6W R252 401 027 2600 CARBON 5.6K JA 1/6W R445 401 058 2501 OXIDE-MT 100 JA R272 401 256 7308 MT-GLAZE...
  • Page 23 Schematic Schematic Part No. Part No. Description Description Location Location R615 401 180 8402 OXIDE-MT 0.47 JA R808 401 150 5905 MT-GLAZE 10K JA 1/10W R616 401 162 4101 MT-GLAZE 5.6K JA 1/10W R809 401 162 3708 MT-GLAZE 4.7K JA 1/10W R617 402 001 8106 FUSIBLE RES...
  • Page 24 Schematic Schematic Part No. Part No. Description Description Location Location R1049 401 256 6004 MT-GLAZE 27K JA 1/10W R1744 401 024 9305 CARBON 1.2K JA 1/6W R1051 401 256 2709 MT-GLAZE 75 JA 1/10W R1753 401 024 6700 CARBON 100 JA 1/6W R1052 401 255 6500 MT-GLAZE...
  • Page 25 Schematic Schematic Part No. Part No. Description Description Location Location SWITCHES MISCELLANEOUS SW1901 645 006 9673 SWITCH, PUSH (POWER) A100 610 311 9922 MAIN PWB ASSY G7ZEA 645 027 7382 SWITCH, PUSH (POWER) A101 645 067 4594 TUNER, U/V 645 052 2284 SWITCH, PUSH (POWER) A400 610 312 1963...

  • Page 26: Cabinet Parts List

    SCREW 4X14 (8 USED) 411 026 2303 SCREW 3X10 (3 USED) 610 299 3950 DEC AV SHEET 610 299 3875 BUTTON UNIT 610 285 1199 CAP RC 610 313 0781 SANYO BADGE 610 299 5527 DEC SHEET — 26 —...

  • Page 27: Component And Testpoint Locations

    COMPONENT AND TESTPOINT LOCATIONS MAIN BOARD FOIL SIDE D1902 J3401 C3412 C3424 C3442 C3444 C1901 J1902 R1905 R3422 R1902 R3462 R3461 C3423 R3421 C1902 C3417 R1907 R1904 C3411 C3416 C3418 J1901 R1903 C3426 R1906 A1901 D1901 R882 C3413 R881 IC802 C3421 R1909 SW1906...

  • Page 28: Locations

    COMPONENT AND TESTPOINT LOCATIONS (Cont.) CAUTION 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 4A 125V RECHANGE DE MEME TYPE 4A, 125V.
  • Page 29 MAIN BOARD PARTS SIDE VOL-DN POWER VOL-UP CH-UP CH-DN MENU 4A 125V J3401 A1901 SW1903 SW1904 C3412 C3444 SW1901 SW1902 SW1905 SW1906 D1902 C3417 C3442 F601 C3424 C1901 J1902 4A 125V J1901 C1902 TP301 C3411 C3416 C3413 C3418 C3427 D1901 L1901 R1909 C806...
  • Page 30 COMPONENT AND TESTPOINT LOCATIONS (Cont.) PICTURE TUBE SOCKET BOARD PIC TUBE SOCKET BOARD COMPONENTS Part Q701 Q702 Q711 Q712 Q721 Q722 Q1706 Q1707 Q1708 Q1709 Q1711 Q1712 — 30 —...
  • Page 31 AV BOARD PARTS SIDE B10B0900A IC1001 PB1001H IC1003 IC1002 K10G K10F AV BOARD FOIL SIDE B10B0900A J1011 R304 J1012 IC1001 R1002 R1022 C304 J1021 JS301 R1031 R1011 JS315 Q301 R303 R315 Q315 C315 PB1001H R317 C322 R1092 C326 R1096 R1091 J1097 IC301 C314...
  • Page 32 R465 C472 R479 C479 R469 D462 For parts or service contact SANYO Fisher Service Corporation 21605 Plummer Street Chatsworth, CA 91311 (U.S.A.) 300 Applewood Crescent, Concord, Ontario L4K 5C7 (CANADA) March / 2004 / 2000 SMC Printed in U.S.A. — 32 —...

  • Page 33: Block Diagram

    MODEL DS32424 Chassis No. 32424-00 WAVEFORMS BLOCK DIAGRAM NOTE: Waveforms were taken with color-bar signal and the controls set for normal picture. SP901 SPEAKER SCHEMATIC DIAGRAMS CAUTION FOR CONTINUED PROTECTION AGAINST IC3401 IC001 IC101- MTS DECODER AUDIO IC101- IC101- IC101- 52...
  • Page 34 MODEL DS32424 Chassis No. 32424-00 A101 UHF/VHF TUNER R1021 F1BAM0291 MAIN AV1/2 1/10GJ V2 IN R1049 1/10GJ C1021 27KC 16EM10 C1081 C317 LBWA 16EM47 KZ0.1 Y2 IN LBWA L301 C1032 R301 R312 16EM220 D1022 C1022 C312 1/10 LBWA K1051 R856...

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