Sanyo DS31820 Service Manual

Also see for DS31820: Owner's manual

Contents

ASFILE NO.SERVICE MANUAL Remote Control ColorTelevision DS31820 (U.S.A.)(CANADA)ORIGINAL VERSIONChassis No. 31820-00NOTE: Match the Chassis No. onthe unit’s back cover withthe Chassis No. in theService Manual.If the Original VersionService Manual ChassisNo. does not match theunit’s, additional ServiceLiterature is required. Youmust refer to “Notices” to theOriginal Service Manualprior to servicing the unit.ContentsSafety Instructions . . . . . . . . . . . . . . . . . . 2Service Adjustments . . . . . . . . . . . . . 3 - 10Service Hints . . . . . . . . . . . . . . . . . . . . . . 10Mechanical Disassemblies. . . . . . . . . . . 11Chassis Electrical Parts List . . . . . . 12 - 23Cabinet Parts List . . . . . . . . . . . . . . . . . . 24Component and Test PointLocations . . . . . . . . . . . . . . . . . . . 25 - 28Schematic Insert . . . . . . . . . . . . . . . 29 - 36Schematic Notes . . . . . . . . . . . . . . . . . 29Pin Layouts . . . . . . . . . . . . . . . . . . . . . 29Capacitor and Resistor Codes . . . . . . 29Block Diagram . . . . . . . . . . . . . . . 30 - 31Voltage Charts . . . . . . . . . . . . . . . 30 - 32Waveforms. . . . . . . . . . . . . . . . . . . . . . 32Main PC Board . . . . . . . . . . . . . . . 33 - 36Audio/Video Board. . . . . . . . . . . . 35 - 36CRT Socket Board . . . . . . . . . . . . . . . . 33SpecificationsPower Rating . . . . . . . . . . . . . . . . . . . . . 120V, 60Hz89W (Avg), 2.5A (Max)Antenna Input Impedance . . . . . . . . . . . . . . . . . 75ΩUHF/VHF/CATVReceiving Channel . . . . . . . . . . . . . . . . 2 - 13 (VHF),14 - 69 (UHF),01, 14-94, 95-125 (CATV)Remote Ready . . . . . . . . . . 43 Key Remote ControlSound Output . . . . . . . . . . . . . . . . . . . . . . 1.0 W/CHIntermediate FrequencyPicture IF Carrier . . . . . . . . . . . . . . . . . . 45.75MHzSound IF Carrier . . . . . . . . . . . . . . . . . . 41.25MHzColor Sub Carrier . . . . . . . . . . . . . . . . . 42.17MHzPicture Tube . . . . . . . . . . . . . . . . . . M78JUA361X72SemiconductorsIntegrated Circuits. . . . . . . . . . . . . . . . . . . . . . . 15Transistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Except within Tuner and RC Pre-Amp.Cabinet DimensionsWidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 754 mmHeight . . . . . . . . . . . . . . . . . . . . . . . . . . . . 732 mmDepth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 538 mmREFERENCE No. SM780083DS31820, G7SVM, PRODUCT CODE 111359085ASMTS STEREO