Sanyo DS35224 Service Manual
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Sanyo DS35224 Service Manual

Sanyo DS35224 Service Manual

Remote control color tv
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SERVICE MANUAL

Contents
Safety Instructions . . . . . . . . . . . . . . . . . . 2
Service Adjustments . . . . . . . . . . . . . 3 - 10
Service Hints . . . . . . . . . . . . . . . . . . . . . . 11
Mechanical Disassemblies. . . . . . . . . . . 12
Chassis Electrical Parts List . . . . . . 13 - 23
Cabinet Parts List . . . . . . . . . . . . . . . . . . 24
Locations . . . . . . . . . . . . . . . . . . . 25 - 28
Schematic Insert . . . . . . . . . . . . . . . 29 - 36
Schematic Notes . . . . . . . . . . . . . . . . . 29
Pin Layouts . . . . . . . . . . . . . . . . . . . . . 29
Block Diagram . . . . . . . . . . . . . . . 30 - 31
Voltage Charts . . . . . . . . . . . . . . . 30 - 32
Waveforms. . . . . . . . . . . . . . . . . . . . . . 32
Main PC Board . . . . . . . . . . . . . . . 33 - 36
Audio/Video Board. . . . . . . . . . . . 35 - 36
CRT Socket Board . . . . . . . . . . . . . . . . 33
DS35224, G7RZA, PRODUCT CODE 111355699
Remote Control Color
Television

Specifications

Power Rating . . . . . . . . . . . . . . . . . . . . . 120V, 60Hz
Antenna Input Impedance . . . . . . . . . . . . . . . . . 75Ω
Receiving Channel . . . . . . . . . . . . . . . . 2 - 13 (VHF),
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 . . . . . . . . . . . . . . . . . . . A89AEJ15X02
Semiconductors
Integrated Circuits. . . . . . . . . . . . . . . . . . . . . . . 14
Transistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Cabinet Dimensions
Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 848 mm
Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . 751 mm
Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 619 mm
AS
FILE NO.
DS35224
(CANADA)
ORIGINAL VERSION
Chassis No. 35224-00
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.
105W (Avg), 2.5A (Max)
UHF/VHF/CATV
14 - 69 (UHF),
01, 14-94, 95-125 (CATV)
Except within Tuner and RC Pre-Amp.
REFERENCE No.
SM
780123

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Summary of Contents for Sanyo DS35224

  • Page 1: Table Of Contents

    Height ......751 mm Depth ......619 mm DS35224, G7RZA, PRODUCT CODE 111355699 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.) 18. Select NO. 58 AFC7CBP5 (Auto Flesh / C Band Pass Filter) with key. Adjust the data with number keys for C0. 19. 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) 00001110 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 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 12 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 C271 404 087 0500 ELECT 220U M C493 404 056 5307 NP-ELECT 2.2U M 100V C272 404 084 4105 ELECT 3.3U M C497 404 084 2200 ELECT 100U M 6.3V C284 404 084 3207 ELECT...
  • Page 15 Schematic Schematic Part No. Description Part No. Description Location Location C856 404 084 3801 ELECT 1U M C3421 403 224 5606 CERAMIC 2700P K C857 403 235 1000 CERAMIC 220P J C3422 403 323 3602 CERAMIC 0.047U K C858 403 224 5705 CERAMIC 1000P K C3423...
  • Page 16 Schematic Schematic Part No. Description Part No. Description Location Location D601 407 222 4708 DIODE RM3A D1002 408 047 2306 ZENER DIODE MTZJ10B (10V) D602 407 222 4708 DIODE RM3A D1011 408 047 2306 ZENER DIODE MTZJ10B (10V) D603 407 222 4708 DIODE RM3A D1026 408 047 2306...
  • Page 17 Schematic Schematic Part No. Description Part No. Description Location Location L611 610 078 5946 PIPE CORE 405 020 7709 TR 2SC945A-QA 652 000 1725 CORE, PIPE 405 020 7907 TR 2SC945A-RA L612 610 078 5946 PIPE CORE 405 151 8705 TR 2SC536NG-NPA 652 000 1725 CORE, PIPE...
  • Page 18 Schematic Schematic Part No. Description Part No. Description Location Location Q321 (Cont.)405 002 6924 TR 2SA1179-M7-TB 405 157 0505 TR 2SC536NF-NPA 405 134 5925 TR 2SA1037AK T146 R Q688 405 001 7605 TR 2SA1015-Y(SAN) 405 147 2205 TR 2SA1037AK T146 S 405 004 3208 TR 2SA564A-R(CU) 405 163 1503...
  • Page 19 Schematic Schematic Part No. Part No. Description Description Location Location 405 173 9902 TR 2SC3928A1S 405 151 3304 TR 2SA608NF-NPA Q1201 405 011 8401 TR 2SC1740S-Q 406 000 6804 TR 2SA1015-GR(SAN) 405 011 8500 TR 2SC1740S-R Q1702 405 011 8401 TR 2SC1740S-Q 405 011 8609 TR 2SC1740S-S...
  • Page 20 Schematic Schematic Part No. Part No. Description Description Location Location Q1708 405 001 7407 TR 2SA1015-O(SAN) R012 401 027 2600 CARBON 5.6K JA 1/6W 405 001 7605 TR 2SA1015-Y(SAN) R106 401 008 2001 CARBON 18K JA 1/2W 405 004 3109 TR 2SA564A-Q(CU) R107 401 023 2802...
  • Page 21 Schematic Schematic Part No. Part No. Description Description Location Location R406 401 011 2302 CARBON 6.8K JA 1/2W R607 401 016 1508 CARBON 22 JA 1/4W R407 401 069 3702 OXIDE-MT 6.8K JA R608 401 162 3807 MT-GLAZE 470K JA 1/10W R408 401 058 5007 OXIDE-MT...
  • Page 22 Schematic Schematic Part No. Part No. Description Description Location Location R808 401 150 5905 MT-GLAZE 10K JA 1/10W R1202 401 256 6608 MT-GLAZE 68K JA 1/10W R809 401 162 3708 MT-GLAZE 4.7K JA 1/10W R1203 401 150 6209 MT-GLAZE 1K JA 1/10W R810 401 024 7400 CARBON...
  • Page 23 Schematic Schematic Part No. Part No. Description Description Location Location R3406 401 150 5806 MT-GLAZE 100K JA 1/10W CRYSTAL/FILTERS R3407 401 255 6005 MT-GLAZE 1M JA 1/10W X141 421 008 9008 SAW F TSF5235P R3411 401 265 4008 MT-GLAZE 62K JA 1/10W X161 610 015 3059 TRAP, CERAMIC 4.5MHZ...

  • Page 24: Cabinet Parts List

    SCREW 3X10 (3 USED) 610 302 5148 DEC AV SHEET 610 289 1652 BUTTON UNIT 610 267 0851 CAP RC 610 102 7151 DC HOLDER (2 USED) 610 291 3484 DEC SHEET 645 045 8880 SANYO BADGE — 24 —...

  • Page 25: 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 R1907 R1904 C3417 C3411 C3416 C3418 J1901 R1903 C3426 R1906 A1901 D1901 R882 C3413 R881 C3421 R1909 SW1906 IC802...
  • Page 26 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 RECHANGE DE MEME TYPE 4A, 125V. 4A 125V AV BOARD COMPONENTS MAIN BOARD COMPONENTS AND TEST POINTS GRID LOCATIONS...
  • Page 27 COMPONENT AND TESTPOINT LOCATIONS (Cont.) MAIN BOARD PARTS SIDE VOL-DN POWER VOL-UP CH-UP CH-DN MENU 4A 125V J3401 A1901 SW1903 SW1904 C3412 SW1901 SW1902 SW1905 SW1906 D1902 C3417 C3444 C3442 C3424 F601 C1901 J1902 4A 125V J1901 C1902 TP301 C3411 C3416 C3413 C3418...
  • Page 28 R3453 R3452 K10F K10G R3456 R3458 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) July / 2003 / 2000 SMC Printed in U.S.A. — 28 —...

  • Page 29: Block Diagram

    MODEL DS35224 Chassis No. 35224-00 WAVEFORMS BLOCK DIAGRAM NOTE: Waveforms were taken with color-bar signal and the controls set for normal picture. SCHEMATIC DIAGRAMS IC101- IC101- IC101- IC101- 52 SP901 SPEAKER (R-Output) (G-Output) (B-Output) (Selected Video) CAUTION FOR CONTINUED PROTECTION AGAINST...
  • Page 30 MODEL DS35224 Chassis No. 35224-00 A101 R1021 F1BAM0290 MAIN AV1/2 1/10GJ J1021 V2 IN R1049 1/10GJ C1021 27KC 1/10 16EM10 C1081 C317 LBWA 16EM47 C1032 KZ0.1 LBWA L301 16EM220 R301 LBWA R312 R856 C106 1/10 K1051 1/10GJ EM3.3 LBWA C319...

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