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Sanyo DS19310 Service Manual

Remote control color television
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See also: Service Manual , Owner's Manual
SERVICE MANUAL
Contents
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . 2
Service Adjustments. . . . . . . . . . . . . . . . . . . 3 - 8
Service Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Mechanical Disassemblies . . . . . . . . . . . . . . . 12
Chassis Electrical Parts List . . . . . . . . . . . 13 - 20
Cabinet Parts List . . . . . . . . . . . . . . . . . . . . . . 21
Schematic Diagrams . . . . . . . . . . . . . . . . 25 - 32
Block Diagram . . . . . . . . . . . . . . . . . . . . . 26 - 27
Voltage Charts . . . . . . . . . . . . . . . . . . . . . 26 - 27
Waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
DS19310, G8EDM, PRODUCT CODE 111355483
Remote Control Color
Television

Specifications

Power Rating . . . . . . . . . . . . . . . . . . . . . . 120V, 60Hz
Antenna Input Impedance . . . . . . . . . . . . . . . . . . 75Ω
Receiving Channel . . . . . . . . . . . . . . . . . 2 - 13 (VHF),
Remote Ready. . . . . . . . . . . . 24 Key Remote Control
Sound Output . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 W
Intermediate Frequency
Picture Tube. . . . . . . . . . . . A48AAB37X/A48AGD12X
Semiconductors
Cabinet Dimensions
AS
FILE NO.
DS19310
ORIGINAL VERSION
Chassis No. 19310-00
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.
68W (Avg), 1.4A (Max)
01, 14-94, 95-125 (CATV)
Picture IF Carrier . . . . . . . . . . . . . . . . . . 45.75MHz
Sound IF Carrier. . . . . . . . . . . . . . . . . . . 41.25MHz
Color Sub Carrier . . . . . . . . . . . . . . . . . . 42.17MHz
Integrated Circuits. . . . . . . . . . . . . . . . . . . . . . . . . 7
Transistors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Except within Tuner and RC Pre-Amp.
Width. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 488mm
Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 452mm
Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 467mm
REFERENCE No.
(U.S.A.)
(CANADA)
UHF/VHF/CATV
14 - 69 (UHF),
SM
5110224

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Summary of Contents for Sanyo DS19310

  • Page 1: Table Of Contents

    Height ......452mm Depth ......467mm DS19310, G8EDM, PRODUCT CODE 111355483 REFERENCE No.

  • Page 2: Safety Instructions

    SAFETY INSTRUCTIONS SAFETY PRECAUTIONS WARNING: The chassis of this receiver has a floating ground READING SHOULD NOT EXCEED 750 mV. with the potential of one half the AC line voltage in respect to AC VOLTMETER earth ground. Service should not be attempted by anyone not (5000 ohms per volt or more sensitivity) familiar with the precautions necessary when working on this type of equipment.

  • 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 SERVICE ADJUSTMENTS (Continued) PROGRAM CODES Note 3. Red/Blue Drive Adjustments in Service Menu No. The microprocessor used in this model is a multi-purpose type 041 DRV: Adjust Red and Blue Drive Levels alternately with 1, and is used in several different models. To ensure proper 3, 7, and 9 keys on the remote control.
  • Page 6 SERVICE ADJUSTMENTS (Continued) ANTENNA CONNECTIONS GRAYSCALE ADJUSTMENT This receiver is designed for UHF/VHF reception. A 75 ohm 1. Set the picture controls to the Auto levels. terminal is provided for UHF and VHF receptions. When 2. Turn off the receiver and disconnect the AC power cord connecting a CATV antenna system, connect the 75 ohm (120V AC line).

  • Page 7: Integrated Circuits

    APC DET ADJUSTMENT VIDEO LEVEL ADJUSTMENT 1. Connect a color-bar generator to the antenna terminal. Note: APC DET must be adjusted after IC101 (Signal 2. Switch the generator to a white field (100 IRE). Processor), IC802 (EEPROM) or T151 (PLL VCO Coil) 3.
  • Page 8 SERVICE ADJUSTMENTS (Continued) VIDEO INPUT LEVEL ADJUSTMENT HIGH VOLTAGE CHECK Note: +B (+135V) Voltage Check and Grayscale Adjustment Note: Video Input Level adjustment affects brightness level. When must be completed before attempting High Voltage Check. Video Input Level adjustment is made, brightness level must be checked.

  • Page 9: Service Hints

    SERVICE HINTS POWER FAILURE DETECTOR This set 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 which results in a low voltage supply, the CPU will turn the set off in 1.5 seconds to prevent unnecessary damage: •...

  • Page 10: Purity And Convergence Adjustments

    PURITY AND CONVERGENCE ADJUSTMENTS CAUTION: Purity and Convergence adjustments have been made at the factory. Readjustments should be made only after the picture tube or deflection yoke is replaced. Follow the steps below for the necessary readjustments. PURITY ADJUSTMENT 1. When replacing picture tube or deflection yoke, mount deflection yoke and purity-convergence magnets assembly properly.
  • Page 11 CONVERGENCE ADJUSTMENT CENTER CONVERGENCE ADJUSTMENT OUTER AREA CONVERGENCE ADJUSTMENT 1. Connect a crosshatch generator to antenna terminals. The outer area convergence is performed by positioning of the 2. Set Contrast control to low level to eliminate Blooming. yoke as follows: Reduce Brightness level to obtain black background if 1.

  • Page 12: Mechanical Disassemblies

    MECHANICAL DISASSEMBLIES CHASSIS REMOVAL CABINET BACK REMOVAL 1. Remove cabinet back. 1. Refer to Figure 1, remove 4 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 C405 404 084 4006 ELECT 2.2U M C843 403 235 6203 CERAMIC 0.01U Z C406 403 076 0200 CERAMIC 220P K 500V C862 403 235 6203 CERAMIC 0.01U Z C407 403 076 3607 CERAMIC 470P K...
  • Page 15 Schematic Schematic Part No. Description Part No. Description Location Location 407 063 9306 ZENER DIODE MTZJ7.5C (7.5V) 407 099 5600 ZENER DIODE MTZJ6.8A (6.8V) D496 407 013 4306 DIODE 1S2076A 407 013 7109 DIODE 1S2473 408 008 2406 DIODE 1N4148 INTEGRATED CIRCUITS D501 407 005 8602...
  • Page 16 Schematic Schematic Part No. Description Part No. Description Location Location Q101 (Cont.) 405 020 7709 TR 2SC945A-QA 405 004 3109 TR 2SA564A-Q(CU) 405 020 7907 TR 2SC945A-RA 405 004 3208 TR 2SA564A-R(CU) 405 151 8705 TR 2SC536NG-NPA 405 006 1707 TR 2SA933S-Q 405 157 0505 TR 2SC536NF-NPA...
  • Page 17 Schematic Schematic Part No. Description Part No. Description Location Location 405 011 8609 TR 2SC1740S-S RESISTORS 405 012 2002 TR 2SC1815-GR NOTES: 405 012 2101 TR 2SC1815-O Read description of the Resistor as follows: 405 012 2309 TR 2SC1815-Y 405 020 7501 TR 2SC945A-PA (Example) CARBON...
  • Page 18 Schematic Schematic Part No. Description Part No. Description Location Location R206 401 150 6001 MT-GLAZE 0.000 ZA 1/10W R518 401 025 4606 CARBON 18K JA 1/6W R207 401 150 6209 MT-GLAZE 1K JA 1/10W R601 402 055 3201 WIRE WOUND 1 KA WA 6W R212 401 255 6005...

  • Page 19: Transistors

    Schematic Schematic Part No. Part No. Description Description Location Location TRANSFORMERS R847 401 162 4101 MT-GLAZE 5.6K JA 1/10W R848 401 162 4101 MT-GLAZE 5.6K JA 1/10W T131 645 027 6095 TRANS,IF 4.5MHZ R849 401 162 4101 MT-GLAZE 5.6K JA 1/10W T151 645 027 6088 TRANS,OSC 45.75MHZ...
  • Page 20 Schematic Schematic Part No. Part No. Description Description Location Location 610 117 7924 DY SPACER Q901A2(Cont.) Q901A3 610 117 0154 DY SPACER 610 117 7924 DY SPACER RL601 645 000 4155 RELAY 645 011 2713 RELAY 645 015 8629 RELAY 645 024 7767 RELAY 645 024 7828...

  • Page 21: Cabinet Parts List

    610 293 2669 CABINET FRONT 645 044 3190 ASSY,RC TRANSMITTER OR 645 044 3237 ASSY,RC TRANSMITTER 610 285 5685 SANYO BADGE 610 290 1221 RC-BATTERY COVER 610 289 8071 DEC SHEET OR 610 290 1283 RC-BATTERY COVER 610 289 3731...

  • Page 22: Component And Test Point Locations

    COMPONENT AND TEST POINT LOCATIONS CAUTION FOR CONTINUED PROTECTION AGAINST A RISK OF FIRE, REPLACE ONLY WITH THE SAME TYPE 4A, 125V FUSE. ATTENTION : POUR MAINTENIR LA PROTECTION 4A 125V CONTRE LES RISQUES D’ INCENDIE UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE 4A, 125V MAIN BOARD - Parts Side —...
  • Page 23 MAIN BOARD - Foil Side — 23 —...

  • Page 24: Picture Tube

    PICTURE TUBE SOCKET BOARD - Parts Side 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) August / 2001 / 2200 SMC Printed in U.S.A.

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