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Sanyo AVM-3651G Service Manual

Remote control color television
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SERVICE MANUAL

Contents
Safety Instructions . . . . . . . . . . . . . . . . . . 2
Service Adjustments . . . . . . . . . . . . . . 3 - 9
Service Hints . . . . . . . . . . . . . . . . . . . . . . 10
Mechanical Disassemblies. . . . . . . . . . . 11
Chassis Electrical Parts List . . . . . . 12 - 22
Cabinet Parts List . . . . . . . . . . . . . . . . . . 23
Locations . . . . . . . . . . . . . . . . . . . 24 - 27
Schematic Insert . . . . . . . . . . . . . . . 29 - 36
Schematic Notes . . . . . . . . . . . . . . . . . 29
Pin Layouts . . . . . . . . . . . . . . . . . . . . . 25
Block Diagram . . . . . . . . . . . . . . . 30 - 31
Voltage Charts . . . . . . . . . . . . . . . 30 - 32
Waveforms. . . . . . . . . . . . . . . . . . . . . . 32
Schematic Diagrams . . . . . . . . . . 33 - 36
AVM-3651G, G7RBM, PRODUCT CODE 111355681
Remote Control Color
Television

Specifications

Power Rating . . . . . . . . . . . . . . . . . . . . . 120V, 60Hz
Antenna Input Impedance . . . . . . . . . . . . . . . . 75W
Receiving Channel . . . . . . . . . . . . . . . . 2 - 13 (VHF),
Remote Ready . . . . . . . . . . 33 Key Remote Control
Sound Output . . . . . . . . . . . . . . . . . . . . . . 3.0 W/CH
Intermediate Frequency
Picture Tube . . . . . . . . . . . . . . . . . . . A90AEJ15X02
Semiconductors
Cabinet Dimensions
AS
FILE NO.
AVM-3651G
ORIGINAL VERSION
Chassis No. G7R-3651G0
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.
107W (Avg), 2.5A (Max)
01, 14-94, 95-125 (CATV)
Picture IF Carrier . . . . . . . . . . . . . . . . . . 45.75MHz
Sound IF Carrier . . . . . . . . . . . . . . . . . . 41.25MHz
Color Sub Carrier . . . . . . . . . . . . . . . . . 42.17MHz
Integrated Circuits. . . . . . . . . . . . . . . . . . . . . . . 12
Transistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Except within Tuner and RC Pre-Amp.
Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 848mm
Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . 751mm
Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 618mm
REFERENCE No.
(U.S.A.)
UHF/VHF/CATV
14 - 69 (UHF),
SM
780073

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  Summary of Contents for Sanyo AVM-3651G

  • Page 1: Table Of Contents

    Height ......751mm Depth ......618mm AVM-3651G, G7RBM, PRODUCT CODE 111355681 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. IC802 (EEPROM) REPLACEMENT When IC802 (EEPROM) is replaced, IC801 (CPU) will automatically write the initial reference data into IC802 for basic TV operation. However, the bus data should be checked and some bus data should be set up before attempting the service adjustments.
  • Page 4 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 5 Table 1. ON-SCREEN SERVICE MENU (Continued) 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 (Continued) DRIVE / BIAS ADJUSTMENTS PROGRAM CODES Note 3. Red/Blue Drive Adjustments in Service Menu NO. The microprossesor used in this model is a multi-purpose 72 DRV: Adjust Red and Blue Drive Levels alternately with type and is used in several different models. To ensure 1, 3, 7, and 9 keys on the remote control.
  • Page 7: Antenna Connections

    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, change resistor R513...
  • Page 8 SERVICE ADJUSTMENTS (Continued) GRAYSCALE ADJUSTMENT BRIGHTNESS LEVEL ADJUSTMENT 1. Set the picture controls to the Sports levels or Reset Note: Grayscale, RF AGC, Video Level, and High Voltage Check (use MENU key and key or RESET key). must be adjusted before attempting Brightness Level 2.
  • Page 9 SOUND ADJUSTMENT SEPARATION ADJUSTMENT 1. Connect a color-bar generator to the antenna terminals 7. Turn off the receiver and disconnect the AC power cord with audio signal of 1KHz at 100% modulation. (AC 120V line). 2. Set the picture controls to the Sports levels 8.
  • Page 10: 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 unnecessary damage: •...
  • Page 11: 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 12: 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 13 Schematic Schematic Part No. Description Part No. Description Location Location C256 403 049 0008 ELECT 1U M C504 403 045 9807 ELECT 2200U M C257 403 224 6108 CERAMIC 0.01U K C505 403 067 7805 MT-COMPO 0.47U J C258 403 043 9106 ELECT 47U M C505...
  • Page 14 Schematic Schematic Part No. Description Part No. Description Location Location C843 403 357 9601 CERAMIC 0.1U Z C3412 403 043 9106 ELECT 47U M C853 403 047 8402 ELECT 0.1U M C3413 403 046 9905 ELECT 4.7U M C854 403 235 0706 CERAMIC 120P J C3414...
  • Page 15 Schematic Schematic Part No. Description Part No. Description Location Location 408 009 9404 DIODE 1N4002ID 407 013 7109 DIODE 1S2473 D490 407 057 0104 ZENER DIODE RD5.6EB3 (5.6V) 408 008 2406 DIODE 1N4148 407 063 8903 ZENER DIODE MTZJ5.6C (5.6V) D751 407 013 4306 DIODE 1S2076A...
  • Page 16 Schematic Schematic Part No. Description Part No. Description Location Location INTEGRATED CIRCUITS 645 001 4758 INDUCTOR, 100U K L727 610 029 8149 PEAKING COIL 100UH K IC001 409 389 4607 IC LA4600 645 001 4758 INDUCTOR, 100U K IC101 409 491 4809 IC LA76834NM-TBM L801 645 008 2894...
  • Page 17 Schematic Schematic Description Description Part No. Part No. Location Location Q202 405 001 7407 TR 2SA1015-O(SAN) 405 012 2101 TR 2SC1815-O 405 001 7605 TR 2SA1015-Y(SAN) 405 012 2309 TR 2SC1815-Y 405 004 3109 TR 2SA564A-Q(CU) 405 020 7501 TR 2SC945A-PA 405 004 3208 TR 2SA564A-R(CU) 405 020 7709...
  • Page 18 Schematic Schematic Part No. Part No. Description Description Location Location Q722 (C0nt.) 405 012 2002 TR 2SC1815-GR 405 012 2309 TR 2SC1815-Y 405 012 2101 TR 2SC1815-O 405 020 7501 TR 2SC945A-PA 405 012 2309 TR 2SC1815-Y 405 020 7709 TR 2SC945A-QA 405 020 7501 TR 2SC945A-PA...
  • Page 19 Schematic Schematic Part No. Part No. Description Description Location Location Q1706 405 011 8401 TR 2SC1740S-Q NOTES: 405 011 8500 TR 2SC1740S-R Read description of the Resistor as follows: 405 011 8609 TR 2SC1740S-S (Example) 405 012 2002 TR 2SC1815-GR CARBON 4.7K A 1/4W...
  • Page 20 Schematic Schematic Part No. Part No. Description Description Location Location R274 401 162 4101 MT-GLAZE 5.6K JA 1/10W R489 401 059 5907 OXIDE-MT 18 JA R275 401 256 6608 MT-GLAZE 68K JA 1/10W R491 401 012 5708 CARBON 1K JA 1/4W R276 401 024 9701 CARBON...
  • Page 21 Schematic Schematic Part No. Part No. Description Description Location Location R707 401 069 8202 OXIDE-MT 8.2K JA R881 401 255 6500 MT-GLAZE 100 JA 1/10W R709 401 027 2303 CARBON 560 JA 1/6W R882 401 255 6500 MT-GLAZE 100 JA 1/10W R711 401 024 8308 CARBON...
  • Page 22 Schematic Schematic Part No. Part No. Description Description Location Location R1727 401 012 3506 CARBON 10 JB 1/4W TRANSFORMERS R1728 401 016 9801 CARBON 27 JB 1/4W T151 645 027 6088 TRANS, OSC 45.75MHZ R1730 401 012 5708 CARBON 1K JA 1/4W T401 610 000 1138 DRIVE TRANS...
  • Page 23: Cabinet Parts List

    SCREW 3X10 (2 USED) 610 290 1092 DEC AV SHEET 610 289 1669 BUTTON UNIT 610 285 1199 CAP RC 610 102 7151 DC HOLDER (2 USED) 610 292 8853 DEC SHEET 645 025 0675 SANYO BADGE — 23 —...
  • Page 24: Component And Testpoint Locations

    COMPONENT AND TESTPOINT LOCATIONS MAIN BOARD PARTS SIDE IC3401 IC101 — 24 —...
  • Page 25: Locations

    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 MAIN BOARD COMPONENTS AND TEST POINTS PIC TUBE SOCKET BOARD COMPONENTS GRID LOCATIONS...
  • Page 26 COMPONENT AND TESTPOINT LOCATIONS (Cont.) MAIN BOARD FOIL SIDE — 26 —...
  • Page 27 PICTURE TUBE SOCKET BOARD — 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) April / 2001 / 2700 SMC Printed in U.S.A. — 28 —...
  • Page 29: Block Diagram

    MODEL AVM-3651G Chassis No. G7R-3651G0 WAVEFORMS MODEL DS35510-00 Chassis No. 35510-00 NOTE: Waveforms were taken with color bar signal and the controls adjusted for normal picture. CAUTION FOR CONTINUED PROTECTION AGAINST A RISK OF FIRE, REPLACE ONLY WITH THE SAME TYPE 4A, 125V FUSE.
  • Page 30 MAIN AV1/2 S1-SW A101 V2 IN F1BAM0261 R1021 D1021 C1021 1/10GJ 16EM10 C1081 R1049 MODEL AVM-3651G Chassis No. G7R-3651G0 16EM47 1/10GJ 27KC R1048 1/10GJ10KC MODEL DS35510 Chassis No. 35510-00 Y2 IN C101 IC301 S1-SW 6.3EM 3 LINE K1051 R1022 C306...

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Ds35510