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Sanyo DP42849 Service Manual

Remote control digital color television
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SERVICE MANUAL
Servicing should be performed by only trained and qualified service personnel.
Contents
SAFETY INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . 2
SERVICE ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . 3
ON-SCREEN SERVICE MENU . . . . . . . . . . . . . . . . . . . . . 4
POWER FAILURE CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . 5
MECHANICAL DISASSEMBLY . . . . . . . . . . . . . . . . . . . . 6
CHASSIS ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . 8
BLOCK DIAGRAM POWER LINES. . . . . . . . . . . . . . . . . 24
BLOCK DIAGRAM SIGNAL LINES . . . . . . . . . . . . . . . . 25
IC BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . 26
TROUBLESHOOTING FLOW CHARTS . . . . . . . . . . . . . 32
CONTROL PORT FUNCTIONS. . . . . . . . . . . . . . . . . . . . 35
SCHEMATIC NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
SCHEMATIC DIAGRAMS. . . . . . . . . . . . . . . . . . . . . . . . 42
DP42849, N7AE, PRODUCT CODE 113018204
Remote Control Digital
Color Television
FILE NO.
DP42849
ORIGINAL VERSION
Chassis No. P42849-00
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.

Specifications

POWER RATING . . . . . . . . . . . . . . . . . . . . . . . . . 120VAC
ANTENNA INPUT IMPEDANCE. . . . . . . . . . . . . . . . . 75Ω
RECEIVING CHANNEL . . . . . . . . . . . . . . . . . 2 - 13 (VHF),
REMOTE READY. . . . . . . . . 54 KEY REMOTE CONTROL
SOUND OUTPUT. . . . . . . . . . . . . . . . . . . . . . . 10.0 W/CH
INTERMEDIATE FREQUENCY
PICTURE IF CARRIER . . . . . . . . . . . . . . . . . . 45.75MHz
SOUND IF CARRIER . . . . . . . . . . . . . . . . . . . 41.25MHz
COLOR SUB CARRIER . . . . . . . . . . . . . . . . . 42.17MHz
CABINET DIMENSIONS
WIDTH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1012mm
HEIGHT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 704mm
DEPTH INCLUDING BASE . . . . . . . . . . . . . . . . 307mm
REFERENCE No.
(U.S.A.)
(CANADA)
216 W (AVG.)
UHF/VHF/CATV
DIGITAL
14 - 69 (UHF),
01, 14-94, 95-135 (CATV)
1-135 (DIGITAL)
SM
780157

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  Summary of Contents for Sanyo DP42849

  • Page 1: Table Of Contents

    HEIGHT ....... 704mm DEPTH INCLUDING BASE ....307mm DP42849, N7AE, PRODUCT CODE 113018204 REFERENCE No.
  • Page 2: Safety Instructions

    SAFETY INSTRUCTIONS SAFETY PRECAUTIONS WARNING: The chassis of this receiver has a floating ground with the potential of one half the AC line voltage in respect to earth ground. Service should not be attempted by anyone not 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 Volume – the CPU that allows remote operation for most of the Enter Service Menu service adjustments. ON-SCREEN SERVICE MENU SYSTEM 1. Enter the Service Menu: • Turn off the receiver and disconnect the AC power supply.
  • Page 4: On-Screen Service Menu

    ON-SCREEN SERVICE MENU Table 1. ON-SCREEN SERVICE MENU When IC801 (EEPROM) is replaced, check the bus data to confirm they are the same as below. See page 3 for On-Screen Service Menu access and adjustments. Title Initial Data Note MUTE Audio mute at Power ON Volume setup inspection Option 1 Data (HDMI)
  • Page 5: Power Failure Circuit

    POWER FAILURE CIRCUIT Check the following if the unit is turned off by the power CPU (IC800) is programmed so the set will go to standby failure detector. mode when there is circuit failure as described below. (Refer to“Block Diagram Power Lines”.) 1.
  • Page 6: Mechanical Disassembly

    MECHANICAL DISASSEMBLY CAUTION: This LCD TV uses several different kinds of screws. Using the correct screw is necessary to prevent damage. Lead wires must be redressed to their previous locations after servicing. The Earth sheet and gasket are provided to pre- vent interference to other radio and television receivers.
  • Page 7 ELECTROSTATICALLY SENSITIVE DEVICES Many solid-state devices (especially Integrated Circuits) are Electrostatically Sensitive, and, therefore, require special handling techniques as described under “Servicing Electrostatically Sensitive Devices,” on page two in this service literature. BACK CABINET REMOVAL Remove 17 screws to take the back cabinet off. (C: 3x14, 13pcs;...
  • Page 8: Chassis Electrical Parts List

    CHASSIS ELECTRICAL PARTS LIST CAUTION: To Protect against electrical shock and for continued product safety, refer to SAFETY PRECAUTIONS 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 IN THIS PARTS LIST AND THE SCHEMATIC DIAGRAM DESIGNATE COMPONENTS IN WHICH SAFETY CAN BE OF SPECIAL SIGNIFICANCE.
  • Page 9 Schematic Schematic Part No. Part No. Description Description Location Location C1611 CK1H104ZLZFNG CERAMIC 0.1U Z CAPACITORS C1612 CK1A105KLZBNG CERAMIC 1U K C016 CK1E105KGMBNG CERAMIC 1U K C1613 CK1E103KMNBNG CERAMIC 0.01U K C017 CE1E102MZVANN ELECT 1000U M C1614 CK1H103KLZBNG CERAMIC 0.01U K CEXLB1E102VEN ELECT 1000U M...
  • Page 10 Schematic Schematic Part No. Part No. Description Description Location Location C3904 CK0J106KGMBNG CERAMIC 10U K 6.3V C5571 CK1E103KMNBNG CERAMIC 0.01U K C5501 CK0J106KGMBNG CERAMIC 10U K 6.3V C5572 CK0J105KMNBNG CERAMIC 1U K 6.3V C5503 CK0J106KGMBNG CERAMIC 10U K 6.3V C5573 CK0J105KMNBNG CERAMIC 1U K...
  • Page 11 Schematic Schematic Part No. Part No. Description Description Location Location C5657 CC1H470JLZCNG CERAMIC 47P J C6110 CEXLB0J102VDN ELECT 1000U M 6.3V C5658 CC1H470JLZCNG CERAMIC 47P J C6111 CK1H104ZLZFNG CERAMIC 0.1U Z C5659 CC1H470JLZCNG CERAMIC 47P J C6112 CK1H104KLZBNG CERAMIC 0.1U K C5660 CC1H470JLZCNG CERAMIC...
  • Page 12: Integrated Circuits

    Schematic Schematic Part No. Part No. Description Description Location Location C6605 CK1A105KLZBNG CERAMIC 1U K IC2401 QTC7SH08FU—P IC TC7SH08FU(TE85L) C6609 CEXLB1V471VDN ELECT 470U M IC2402 QTC7SH08FU—P IC TC7SH08FU(TE85L) C6611 CK1E103KMNBNG CERAMIC 0.01U K IC2403 QLE24C023M-EP IC LE24C023M-TLM-E QXXAVC837—-P IC AT24C02BN-10SU-1.8 DIODES QXXAVC986—-P IC CAT24C02WI-GT3...
  • Page 13 Schematic Schematic Part No. Part No. Description Description Location Location L6100 RGF1200JTCANL MT-GLAZE 120 JA 1/10W L1614 1LB4L26B0740G “INDUCTOR , 220 OHM” L6101 RGF1200JTCANL MT-GLAZE 120 JA 1/10W L1620 1AV4L26B5930N “INDUCTOR,10U” L1621 RGFR000ZTAANL MT-GLAZE 0.000 ZA 1/10W L6103 1AV4L2FB3R3MG “INDUCTOR,3.3U M” L1622 RGFR000ZTAANL MT-GLAZE 0.000 ZA 1/10W...
  • Page 14 Schematic Schematic Part No. Part No. Description Description Location Location T2SC3928A1S-P TR 2SC3928A1S TISA1235AC1FP TR ISA1235AC1F TXXLBB006—-P TR MMBTSC3928R TXXLBB005—-P TR MMBTSA1235F Q5806 T2SC3928A1R-P TR 2SC3928A1R Q1600 TAO4449——-P TR AO4449 Q1602 T2SC3928A1R-P TR 2SC3928A1R T2SC3928A1S-P TR 2SC3928A1S T2SC3928A1S-P TR 2SC3928A1S TXXLBB006—-P TR MMBTSC3928R TXXLBB006—-P...
  • Page 15 Schematic Schematic Part No. Part No. Description Description Location Location R884 RGF1002JTCANL MT-GLAZE 10K JA 1/10W R015 RGF2701FTCANL MT-GLAZE 2.7K FA 1/10W R885 RGF1000JTCANL MT-GLAZE 100 JA 1/10W R016 RGF6801FTCANL MT-GLAZE 6.8K FA 1/10W R017 RGF4700JTCANL MT-GLAZE 470 JA 1/10W R886 RGF1003JTCANL MT-GLAZE...
  • Page 16 Schematic Schematic Part No. Part No. Description Description Location Location R1102 RGFR000ZTCANL MT-GLAZE 0.000 ZA 1/10W R1673 RGF1001FTCANL MT-GLAZE 1K FA 1/10W R1104 RGFR000ZTCANL MT-GLAZE 0.000 ZA 1/10W R1674 RGF2202JTCANL MT-GLAZE 22K JA 1/10W R1106 RGFR000ZTCANL MT-GLAZE 0.000 ZA 1/10W R1675 RGF1002FTCANL MT-GLAZE...
  • Page 17 Schematic Schematic Part No. Part No. Description Description Location Location R2411 RGF1000JTCANL MT-GLAZE 100 JA 1/10W R5545 RGF4701JTCANL MT-GLAZE 4.7K JA 1/10W R5547 RGF1001JTCANL MT-GLAZE 1K JA 1/10W R2414 RGF3303JTCANL MT-GLAZE 330K JA 1/10W R2415 RGF3303JTCANL MT-GLAZE 330K JA 1/10W R5549 RGF2701FTCANL MT-GLAZE...
  • Page 18 Schematic Schematic Part No. Part No. Description Description Location Location R6305 RGF6802FTCANL MT-GLAZE 68K FA 1/10W R5838 RGF1002JTCANL MT-GLAZE 10K JA 1/10W R5839 RGF1002JTCANL MT-GLAZE 10K JA 1/10W R6306 RGF6802FTCANL MT-GLAZE 68K FA 1/10W R5840 RGF1000JTCANL MT-GLAZE 100 JA 1/10W R6310 RGF2201FTCANL MT-GLAZE...
  • Page 19 Schematic Schematic Part No. Part No. Description Description Location Location R6528 RGF1002JTCANL MT-GLAZE 10K JA 1/10W R6622 RGFR000ZTCANL MT-GLAZE 0.000 ZA 1/10W R6529 RGF1002JTCANL MT-GLAZE 10K JA 1/10W R6623 RGFR000ZTCANL MT-GLAZE 0.000 ZA 1/10W R6530 RGF1002JTCANL MT-GLAZE 10K JA 1/10W R6624 RGF1002JTCANL MT-GLAZE...
  • Page 20: Power Board

    Schematic Schematic Part No. Part No. Description Description Location Location MISCELLANEOUS POWER BOARD A100 1AA0B10N25600 “ASSY,PWB,MAIN_A N7AE” U901 1AV4U20C39200 UNIT,POWER A200 1AA0B10N26100 “ASSY,PWB,CONTROL N7AE” A201 1AA0B10N2610A “ASSY,PWB,KEY_SW N7AE” A202 1AA0B10N2610B “ASSY,PWB,RC_LED N7AE” A3900 1AV4U20C11701 “UNIT,REMOCON RECEIVER” A6100 1AV4F1BAZ0100 “TUNER,U/V” EL901 1AV4T40C05500 LCD(LC420WUN-SBA1) K19CTR...
  • Page 21: Component And Testpoint Locations

    COMPONENT AND TESTPOINT LOCATIONS MAIN BOARD PARTS SIDE L1750 L1752 IC1700 C1704 K1003 C020 C024 C029 C040 C044 C046 L1735 L1755 C026 C042 SC1001 L1751 C1000 R1077 K801 L1754 R1857 R1858 C047 K_JIGU C025 C030 C041 C045 K1004 C819 C016 L006 R883 L007...
  • Page 22 MAIN BOARD SOLDER SIDE C1000 K1003 L1753 L1752 D1701 R1704 R1703 R1702 C1700 R1701 Q1701 K801 C043 C027 A30C5 K_JIGU C1664 K802 R814 Q802 C017 R815 R812 L1679 R849 R820 R850 L1678 R817 R853 C1001 L1660 R874 R822 R858 R1688 R1833 R857 R872...
  • Page 23 CONTROL BOARD PART SIDE SW1901 SW1902 SW1903 SW1904 SW1905 POWER VOL.+ VOL.- CH.+ CH.- PWB,KEY_SW N7AE L1901 1AA4B10N2320A A30C5 K19CTRA K19CTR (3PIN) (8PIN) CONTROL BOARD SOLDER SIDE SW1902 SW1905 SW1904 SW1903 SW1901 L1901 PWB,KEY_SW N7AE 1AA4B10N2320A K19CTRA (3PIN) A30C5 K19CTR (8PIN) PWB RC_LED PART SIDE PWB RC_LED SOLDER SIDE...
  • Page 24: Block Diagram Power Lines

    BLOCK DIAGRAM POWER LINES – 24 –...
  • Page 25: Block Diagram Signal Lines

    BLOCK DIAGRAM SIGNAL LINES – 25 –...
  • Page 26: Ic Block Diagrams

    IC BLOCK DIAGRAMS IC001, Audio AMP – 26 –...
  • Page 27 IC BLOCK DIAGRAMS (CONT.) IC1660, DC to DC Converter IC801, EEPROM – 27 –...
  • Page 28 IC1670, DC to DC Converter IC1640, DC to DC Converter – 28 –...
  • Page 29 IC BLOCK DIAGRAMS (CONT.) IC5500 Block Diagram – 29 –...
  • Page 30 IC6300, Low output Amplifier IC6601, USB Protection – 30 –...
  • Page 31 IC BLOCK DIAGRAMS (CONT.) IC5700, DDR: Double Data Rate SDRAM IC6502, I2C SELECTOR – 31 –...
  • Page 32: Troubleshooting Flow Charts

    TROUBLESHOOTING FLOW CHARTS NO POWER Trouble Shooting Power US1K(42/46) Check: Power Unit fuse open? the voltage Check: Power Unit to "5V_STBY" line supplied? All 0V (except '5V_STBY' line) the voltage to all lines Check: arround supplied? CPU (IC800), IC (IC803), Crystal (X801), Power Unit (or the voltage to some lines is not supplied.) After a few seconds, the set will be switched off.
  • Page 33: Digital

    TROUBLESHOOTING FLOW CHARTS (CONT.) NO VIDEO Trouble Shooting Video US1K(42/46) Check: RF(TV) ,Digital(TV) All Inputs? Line: A6100 21pin - IC5500 AA17pin A6100 20pin - IC5500 AA18pin only Parts: Around A6100 (TU_IF), IC5500 Check: AV1 only Line: Terminal(CV) - Q5802,5806 - IC5500 AD19pin Terminal(Y) - Q5803,5807 - IC5500 AB14pin Terminal(C) - Q5804,5808 - IC5500 AB10pin Parts: Around IC5500...
  • Page 34 NO AUDIO Trouble Shooting Audio US1K(42/46) Is there Check: All Modes ? signal at speaker Speaker (SP901, SP902) terminal ? Is there Check: signal at IC001 7pin (L) Line: IC001 1pin - IC800 (CPU) 22pin (Mute) or 3pin (R) ? Parts: Around IC001 (Audio AMP.) Check: Parts: Around IC6250 (DAC)
  • Page 35: Control Port Functions

    CONTROL PORT FUNCTIONS System Control (CPU : IC800) Name Function Description P12/SCK0 REG SW4 REG SW4 (ON : High OFF : Low) P13/SO1 REG SW5 REG SW5 (ON : Low OFF : High) P14/SI1/SB1 IIC-BUS for NV Data of IIC Bus Active ‘L’ for IIC data NV P15/SCK1 IIC-BUS for NV Clock of IIC Bus Active ‘L’...
  • Page 36 Name Function Description P72/INT2/T0IN CEC output CEC output P73/INT3/T0IN Rcin Remote control signal input RESET in CPU Reset input RESET : Low (and for on-board write) 32.678KHz X’tal input (for clock timer) Xout 32.678KHz X’tal output (for clock timer) VSS1 GND 0Vdc CF1/AN12 Main clock input (8MHz ceramic oscillator)
  • Page 37: Main Sheet Block Diagram & Periphericals

    MAIN SHEET BLOCK DIAGRAM & PERIPHERICALS USB Power SW +1.1V/ +1.8V/ +3.3V DDR2 NAND Flash +12V +9V/ +12V 512Mb (533MHz) (256Mb) fault +24V +12V Write protect Reset RF-IN X243 USB2.0 Digital/ 8VSB/QAM Analog DEMUX Tuner MPEG2 Demod. Video Video1 USB1.1 Decode S-Detect (Composite/S)
  • Page 38: Schematic Notes

    SCHEMATIC NOTES NOTES ON SCHEMATIC DIAGRAMS 1. All resistance values in ohms K=1,000 M=1,000,000. 2. Resistors specified with resistance value are “1/6DJ.” 3. Resistors specified with type of resistor, tolerence and resistance value are “1/4.” 4. Unless otherwise noted on schematic, all capacitor values less than 1 are expressed in μF (Micro Farad), and the values more than 1 are in pF.
  • Page 39: Ic, Diode, And Transistor Pin Layouts

    IC, DIODE, AND TRANSISTOR PIN LAYOUTS – 39 –...
  • Page 40: Pc Board Connections And Locations

    PC BOARD CONNECTIONS AND LOCATIONS – 40 –...
  • Page 41: Capacitor And Resistor Code Chart

    S ......Oxide Metalized Y ......Wire Wound C ......Solid D ......Carbon Film W ......Wire Wound For parts or service contact Sanyo Manufacturing Corporation P.O. Box 2000 3333 Sanyo Road Forrest City, Arkansas 72335-2000 April 2009 SMC Published in Mexico...
  • Page 42: Schematic Diagrams

    MODEL DP42849 Chassis No. P42849-00 SCHEMATIC DIAGRAMS R1614 *C1618 *C1613 1/10GJ L1618 25KK0.01MN 25KK0.01MN 2.2KC C1615 R1619 R1620 L1619 KK0.01LZB C1617 1/10GF470C C1622 1/10GJ1KC C1614 *C1616 KK0.01 C1623 KK0.01LZB GND_S2 R1621 1/10GF1KC R1623 CJ330CL ELECTROSTATICALLY SENSITIVE DEVICES GND_S2 GND_P C1606...
  • Page 43 MODEL DP42849 Chassis No. P42849-00 SCHEMATIC DIAGRAMS R6250 C6251 C6252 IC5700 <HYB18TC512160CF-1.9> L6250 R6251 C6250 1/10GZ0C 35EM B4L26B0740G KZ0.1LZF KZ0.1LZF QXXAVD057P 47LBVD D3.3V MEM_DQA[0-15] L6251 C6259 IC6250 L2FB3R3MG D1.8V_DDR 6.3KK10GMB CS4352-CZZP SN6251 C5703 C5709 C5712 GND GND 6.3KK10GMB 6.3KK10GMB R6257 6.3KK1MN...

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