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Sanyo DS32224 Notice

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See also: Service Manual , Owner's Manual
Notice
CORRECTION
SERVICE FLASH
Please add this notice to the Service Manual listed below.
COLOR TELEVISION
:
Category
DS32224
Model:
U.S.A. / CANADA
Destination:
NOTE: Match the Chassis No. on the unit's back cover with the Chassis No. in the Service Manual.
If the Service Manual Chassis No. does not match the unit's, additional Service Literature
is required. This chassis is similar to Chassis No. 32224-00, however, all Service Information
is given in this Notice for Chassis No. 32224-02 used in Model DS32224.
Contents
Safety Instructions . . . . . . . . . . . . . . . . . . 2
Service Adjustments . . . . . . . . . . . . . 3 - 10
Service Hints . . . . . . . . . . . . . . . . . . . . . . 11
Mechanical Disassemblies. . . . . . . . . . . 12
Chassis Electrical Parts List . . . . . . 13 - 21
Cabinet Parts List . . . . . . . . . . . . . . . . . . 22
Locations . . . . . . . . . . . . . . . . . . . 23 - 26
Schematic Insert . . . . . . . . . . . . . . . 29 - 36
Schematic Notes . . . . . . . . . . . . . . . . . 29
Pin Layouts . . . . . . . . . . . . . . . . . . . . . 29
Capacitor and Resistor Codes . . . . . . 29
Block Diagram . . . . . . . . . . . . . . . 30 - 31
Voltage Charts . . . . . . . . . . . . . . . 30 - 32
Waveforms. . . . . . . . . . . . . . . . . . . . . . 32
Main Board . . . . . . . . . . . . . . . . . . 33 - 36
CRT Socket Board . . . . . . . . . . . . . . . . 33
DS32224, G7TJA, PRODUCT CODE 111370488
PRODUCTION CHANGE
ADD INFORMATION
REF : No.
AS
FILE NO.
REVISION 02
Date:
Effective from : Chassis No.
SS780048
Specifications
Power Rating . . . . . . . . . . . . . . . . . . . . . 120V, 60Hz
Antenna Input Impedance . . . . . . . . . . . . . . . . . 75Ω
Receiving Channel . . . . . . . . . . . . . . . . 2 - 13 (VHF),
Remote Ready . . . . . . . . . . 33 Key Remote Control
Sound Output . . . . . . . . . . . . . . . . . . . . . . 1.0 W/CH
Intermediate Frequency
Picture IF Carrier . . . . . . . . . . . . . . . . . . 45.75MHz
Sound IF Carrier . . . . . . . . . . . . . . . . . . 41.25MHz
Color Sub Carrier . . . . . . . . . . . . . . . . . 42.17MHz
Picture Tube . . . . . . . . . . . . . . . . . . M80JUA068X72
Semiconductors
Integrated Circuits. . . . . . . . . . . . . . . . . . . . . . . 10
Transistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Except within Tuner and RC Pre-Amp.
Cabinet Dimensions
Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 755 mm
Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . 732 mm
Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 538 mm
REFERENCE No.
MARCH / 15 / 2004
32224-02
89W (Avg), 2.5A (Max)
UHF/VHF/CATV
14 - 69 (UHF),
01, 14-94, 95-125 (CATV)
SS780048-02

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Summary of Contents for Sanyo DS32224

  • Page 1: Table Of Contents

    If the Service Manual Chassis No. does not match the unit’s, additional Service Literature is required. This chassis is similar to Chassis No. 32224-00, however, all Service Information is given in this Notice for Chassis No. 32224-02 used in Model DS32224. Contents Specifications Safety Instructions .

  • 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.) 16. Select NO. 58 AFC7CBP5 (Auto Flesh / C Band Pass Filter) with key. Adjust the data with number keys for C0. 17. 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 01110000 Aspect Ratio(5) Comb Filter(4) Clock(3) Scan Velocity(2) 01000010 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: Rf Agc Adjustment

    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. Part No. Description Description Location Location C284 404 084 3009 ELECT 220U M C466 404 084 4204 ELECT 4.7U M C285 403 224 6108 CERAMIC 0.01U K C482 404 084 4709 ELECT 47U M 100V C301 404 084 2705 ELECT 10U M...
  • Page 15 Schematic Schematic Part No. Part No. Description Description Location Location C634 404 084 3207 ELECT 47U M C3431 403 224 6009 CERAMIC 4700P K C636 403 224 6108 CERAMIC 0.01U K C3432 404 087 1200 ELECT 0.1U M C641 404 084 4303 ELECT 47U M C3433...
  • Page 16 Schematic Schematic Part No. Part No. Description Description Location Location D602 407 005 7605 DIODE EM2B D836 407 013 4306 DIODE 1S2076A 407 013 3200 DIODE 1S1887A 407 013 7109 DIODE 1S2473 408 008 8606 DIODE GP15G 408 008 2406 DIODE 1N4148 D603 407 005 7605...
  • Page 17 Schematic Schematic Part No. Part No. Description Description Location Location 652 000 1725 CORE, PIPE 405 004 3109 TR 2SA564A-Q(CU) L621 610 078 5946 PIPE CORE 405 004 3208 TR 2SA564A-R(CU) 652 000 1725 CORE, PIPE 405 006 1707 TR 2SA933S-Q L623 610 078 5946 PIPE CORE...
  • Page 18 Schematic Schematic Part No. Part No. Description Description Location Location Q635 (Cont.) 405 012 2101 TR 2SC1815-O 406 000 3605 TR 2SC3620(LB-SAN-1) 405 012 2309 TR 2SC1815-Y Q711 405 041 6507 TR 2SC2621-D-RA 405 020 7501 TR 2SC945A-PA 405 041 6705 TR 2SC2621-E-RA 405 020 7709 TR 2SC945A-QA...
  • Page 19 Schematic Schematic Part No. Part No. Description Description Location Location R004 401 256 3805 MT-GLAZE 1.5K JA 1/10W R406 401 010 8305 CARBON 5.6K JA 1/2W R005 401 150 5905 MT-GLAZE 10K JA 1/10W R407 401 069 3702 OXIDE-MT 6.8K JA R006 401 023 1706 CARBON...
  • Page 20 Schematic Schematic Part No. Part No. Description Description Location Location R606 401 019 9600 CARBON 47 JA 1/4W R809 401 162 3708 MT-GLAZE 4.7K JA 1/10W R607 401 016 1508 CARBON 22 JA 1/4W R811 401 024 7400 CARBON 10K JA 1/6W R608 401 162 3807 MT-GLAZE...
  • Page 21 Schematic Schematic Part No. Part No. Description Description Location Location R1901 401 150 5905 MT-GLAZE 10K JA 1/10W TRANSFORMERS R1902 401 150 6209 MT-GLAZE 1K JA 1/10W T151 645 049 3775 TRANS, OSC 45.75MHZ R1903 401 162 2800 MT-GLAZE 1.8K JA 1/10W T401 610 000 1138 DRIVE TRANS...

  • Page 22: Cabinet Parts List

    CABINET BACK 412 064 4304 SCREW 4X14 (8 USED) 411 026 2303 SCREW 3X10 (3 USED) 610 312 3219 DEC AV SHEET 610 312 3981 BUTTON UNIT 610 265 3786 CAP RC 610 313 0781 SANYO BADGE — 22 —...

  • Page 23: Component And Testpoint Locations

    COMPONENT AND TESTPOINT LOCATIONS MAIN BOARD FOIL SIDE D1902 J3401 C3412 C3424 C3441 C3443 C1901 J1902 R3422 R1905 R1902 R3462 R3461 C3423 R3421 C1902 C3417 R1907 R1904 C3411 C3416 C3418 J1901 R1903 C3426 R1906 A1901 D1901 R882 R881 C3413 C3421 R1909 SW1906 IC802...
  • Page 24 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. MAIN BOARD COMPONENTS AND TEST POINTS GRID LOCATIONS Part...
  • Page 25 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 C3443 C3441 C3424 F601 C1901 J1902 4A 125V J1901 C1902 TP301 C3411 C3416 C3413 C3418...
  • Page 26 COMPONENT AND TESTPOINT LOCATIONS (Cont.) PICTURE TUBE SOCKET BOARD PIC TUBE SOCKET BOARD COMPONENTS Part Q701 Q711 Q721 — 26 —...
  • Page 27 NOTES NOTES — 27 —...
  • Page 28 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. — 28 —...

  • Page 29: Block Diagram

    MODEL DS32224 Chassis No. 32224-02 WAVEFORMS CAUTION FOR CONTINUED PROTECTION AGAINST A RISK OF FIRE, REPLACE ONLY WITH THE SAME TYPE 4A, 125V FUSE. BLOCK DIAGRAM NOTE: Waveforms were taken with color-bar signal and the controls set for normal picture.
  • Page 30 MODEL DS32224 Chassis No. 32224-02 MAIN AV1/2 A101 R1061 C1061 1/10 KK0.01LZB GJ75C D1061 1516 1718 R1073 R1072 C1081 1/10GJ27KC L1002 16EM47LBWA R301 TP11 1/10GZ0C C336 16EM10 5VB6 C311 9V-1 LBWA C317 16EM L301 KZ0.1LZF 47LBWA R1067 C106 1/10GJ4.7KC EM3.3...

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