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Sanyo DP19648 Service Manual

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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. . . . . . . . . . . . . . . . . . . 6-8
CHASSIS ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . 10
CABINET PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . 25
BLOCK DIAGRAM POWER LINES. . . . . . . . . . . . . . . . . 29
BLOCK DIAGRAM SIGNAL LINES . . . . . . . . . . . . . . . . 30
IC BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . 31-36
TROUBLESHOOTING FLOW CHARTS . . . . . . . . . . 37-38
CONTROL PORT FUNCTIONS. . . . . . . . . . . . . . . . . . . . 40
SIGNAL FLOW CHARTS . . . . . . . . . . . . . . . . . . . . . . 42-46
SCHEMATIC NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . 51-52
DP19648, N4TP , PRODUCT CODE 113013804
Remote Control Digital
Color Television
FILE NO.
DP19648
ORIGINAL VERSION
Chassis No. P19648-00
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. . . . . . . . . 32 KEY REMOTE CONTROL
SOUND OUTPUT. . . . . . . . . . . . . . . . . . . . . . . . 2.0 W/CH
INTERMEDIATE FREQUENCY
PICTURE IF CARRIER . . . . . . . . . . . . . . . . . . 45.75MHz
SOUND IF CARRIER . . . . . . . . . . . . . . . . . . . 41.25MHz
COLOR SUB CARRIER . . . . . . . . . . . . . . . . . 42.17MHz
CABINET DIMENSIONS
WIDTH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480.1mm
HEIGHT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 383.5mm
DEPTH INCLUDING BASE . . . . . . . . . . . . . . . 185.4mm
REFERENCE No.
(U.S.A.)
(CANADA)
50W (AVG.)
UHF/VHF/CATV
DIGITAL
14 - 69 (UHF),
01, 14-94, 95-135 (CATV)
1-135 (DIGITAL)
SM
780149

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   Summary of Contents for Sanyo DP19648

  • Page 1: Table Of Contents

    SCHEMATIC DIAGRAMS ..... 51-52 DEPTH INCLUDING BASE ....185.4mm DP19648, N4TP , PRODUCT CODE 113013804 REFERENCE No.

  • Page 2: Safety Instructions

    SAFETY INSTRUCTIONS SAFETY PRECAUTIONS READING SHOULD NOT EXCEED 750 mV. AC VOLTMETER WARNING: The chassis of this receiver has a floating (5000 ohms per volt or more sensitivity) ground with the potential of one half the AC line voltage in respect to earth ground.

  • Page 3: On-screen Service Menu System

    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 ser- Enter Service Menu vice adjustments. ON-SCREEN SERVICE MENU SYSTEM 1. Enter the Service Menu: •∑...

  • 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. STAND REMOVAL Note: Position TV face down on a padded or cushioned surface to protect the screen and finish.

  • Page 7

    ELECTROSTATICALLY SENSATIVE 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. POWER BOARD REMOVAL Remove 4 screws (3X10) to take off the power unit. Power Unit MAIN BOARD REMOVAL Remove 3 screws (3X10) to take off the main board.

  • Page 8

    MECHANICAL DISASSEMBLY (CONT.) MOUNTING BRACKET AND SPEAKER REMOVAL Remove 11 screws (3X10) to take off the mouniting bracket and the left and right speakers. Mounting Bracket SPEAKER REMOVAL Lift both speakers from cabinet. – 8 –...

  • Page 9

    LCD PANEL REMOVAL Lift panel from cabinet. LCD Panel CONTROL BOARD REMOVAL Remove 2 screws (3X10) to take off the control board with the button assembly parts. Control Board – 9 –...

  • Page 10: 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 11

    Schematic Schematic Part No. Part No. Description Description Location Location CAPACITORS C1244 CEXLB1V470VDN ELECT 47U M C1245 CK1H104KLZBNG CERAMIC 0.1U K C001 CPXLB1C100YAN NP-ELECT 10U M C1246 CEXLB1V470VDN ELECT 47U M CPXLB1C100ZAN NP-ELECT 10U M C1247 CEXLB1V470VDN ELECT 47U M C002 CK1H104ZLZFNG CERAMIC...

  • Page 12

    Schematic Schematic Part No. Part No. Description Description Location Location C1683 CK1H104ZLZFNG CERAMIC 0.1U Z C5519 CK1A105KLZBNG CERAMIC 1U K C1684 CK1H104ZLZFNG CERAMIC 0.1U Z C5520 CK1A105KLZBNG CERAMIC 1U K C1685 CEXLB1V471VDN ELECT 470U M C5521 CK1H104ZLZFNG CERAMIC 0.1U Z C1686 CK1H104ZLZFNG CERAMIC...

  • Page 13

    Schematic Schematic Part No. Part No. Description Description Location Location C5573 CK1H104ZLZFNG CERAMIC 0.1U Z C5639 CC1H150JLZCNG CERAMIC 15P J C5574 CK1A105KLZBNG CERAMIC 1U K C5640 CK1H104ZLZFNG CERAMIC 0.1U Z C5575 CK1H104ZLZFNG CERAMIC 0.1U Z C5642 CK1H104ZLZFNG CERAMIC 0.1U Z C5576 CK1A105KLZBNG CERAMIC...

  • Page 14: Integrated Circuits

    Schematic Schematic Part No. Part No. Description Description Location Location C6063 CK1H104KLZBNG CERAMIC 0.1U K DIODES C6065 CK1A105KLZBNG CERAMIC 1U K D801 DD1SS352——G DIODE 1SS352-(TPH3) C6066 CEXLB0J221VDN ELECT 220U M 6.3V DD1SS355——G DIODE 1SS355 TE-17 C6067 CEXLB0J102VDN ELECT 1000U M 6.3V D821 DD1SS352——G...

  • Page 15

    Schematic Schematic Part No. Part No. Description Description Location Location IC1680 QLA5774MPE—P IC LA5774MP-DL-E L1652 1AV4L2WK150MN INDUCTOR, 15U M IC1690 QPST600DMT—P IC PST600DMT 1LB4L26B1000N INDUCTOR, 15UH IC2400 QXXAVC837—-P IC AT24C02BN-10SU-1.8 L1653 RGFR000ZTAANL MT-GLAZE 0.000 ZA 1/10W QXXAVC986—-P IC CAT24C02WI-GT3 L1661 1LB4L26B0740G INDUCTOR, 220 OHM IC3200...

  • Page 16

    Schematic Schematic Part No. Part No. Description Description Location Location L5750 RGFR000ZTAANL MT-GLAZE 0.000 ZA 1/10W L6366 RGFR000ZTAANL MT-GLAZE 0.000 ZA 1/10W L5800 RGFR000ZTAANL MT-GLAZE 0.000 ZA 1/10W L6367 RGFR000ZTAANL MT-GLAZE 0.000 ZA 1/10W L5801 1AV4L2GA150JG INDUCTOR, 15U J L6368 RGFR000ZTAANL MT-GLAZE 0.000 ZA 1/10W L5802...

  • Page 17

    Schematic Schematic Part No. Part No. Description Description Location Location L7014 RGFR000ZTAANL MT-GLAZE 0.000 ZA 1/10W Q813 T2SC2412K-R-P TR 2SC2412K-T-96-R L7015 RGFR000ZTAANL MT-GLAZE 0.000 ZA 1/10W T2SC2412K-S-P TR 2SC2412K-T-96-S L7016 RGFR000ZTAANL MT-GLAZE 0.000 ZA 1/10W T2SC2812-L6-P TR 2SC2812-L6-TB L7017 RGFR000ZTAANL MT-GLAZE 0.000 ZA 1/10W T2SC2812-L7-P TR 2SC2812-L7-TB...

  • Page 18

    Schematic Schematic Part No. Part No. Description Description Location Location Q1204 T2SC2412K-R-P TR 2SC2412K-T-96-R Q5800 T2SC2412K-R-P TR 2SC2412K-T-96-R T2SC2412K-S-P TR 2SC2412K-T-96-S T2SC2412K-S-P TR 2SC2412K-T-96-S T2SC2812-L6-P TR 2SC2812-L6-TB T2SC2812-L6-P TR 2SC2812-L6-TB T2SC2812-L7-P TR 2SC2812-L7-TB T2SC2812-L7-P TR 2SC2812-L7-TB T2SC2812N-L6P TR 2SC2812N-L6-TB T2SC2812N-L6P TR 2SC2812N-L6-TB T2SC3928A1R-P TR 2SC3928A1R...

  • Page 19

    Schematic Schematic Part No. Part No. Description Description Location Location Q6063 T2SC2412K-R-P TR 2SC2412K-T-96-R R821 RGF1002JTCANL MT-GLAZE 10K JA 1/10W T2SC2412K-S-P TR 2SC2412K-T-96-S R824 RGF1000JTCANL MT-GLAZE 100 JA 1/10W T2SC2812-L6-P TR 2SC2812-L6-TB R828 RGF4701JTCANL MT-GLAZE 4.7K JA 1/10W T2SC2812-L7-P TR 2SC2812-L7-TB R829 RGF1002JTCANL MT-GLAZE...

  • Page 20

    Schematic Schematic Part No. Part No. Description Description Location Location R905 RGF1002JTCANL MT-GLAZE 10K JA 1/10W R1073 RGF75R0JTCANL MT-GLAZE 75 JA 1/10W R906 RGF4701JTCANL MT-GLAZE 4.7K JA 1/10W R1074 RGF82R0JTCANL MT-GLAZE 82 JA 1/10W R907 RGF4701JTCANL MT-GLAZE 4.7K JA 1/10W R1075 RGF82R0JTCANL MT-GLAZE...

  • Page 21

    Schematic Schematic Part No. Part No. Description Description Location Location R1304 RGFR000ZTCANL MT-GLAZE 0.000 ZA 1/10W R1691 RGF1202JTCANL MT-GLAZE 12K JA 1/10W R1305 RGFR000ZTCANL MT-GLAZE 0.000 ZA 1/10W R1692 RGF1202JTCANL MT-GLAZE 12K JA 1/10W R1306 RGFR000ZTCANL MT-GLAZE 0.000 ZA 1/10W R1694 RGFR000ZTCANL MT-GLAZE...

  • Page 22

    Schematic Schematic Part No. Part No. Description Description Location Location R5526 RGF1000JTCANL MT-GLAZE 100 JA 1/10W R5596 RGFR000ZTCANL MT-GLAZE 0.000 ZA 1/10W R5527 RGF27R0JTCANL MT-GLAZE 27 JA 1/10W R5597 RGFR000ZTCANL MT-GLAZE 0.000 ZA 1/10W R5530 RGF4701JTCANL MT-GLAZE 4.7K JA 1/10W R5598 RGFR000ZTCANL MT-GLAZE...

  • Page 23

    Schematic Schematic Part No. Part No. Description Description Location Location R5838 RGF6800JTCANL MT-GLAZE 680 JA 1/10W R6282 RGF1002JTCANL MT-GLAZE 10K JA 1/10W R5840 RGF47R0JTCANL MT-GLAZE 47 JA 1/10W R6283 RGF3301JTCANL MT-GLAZE 3.3K JA 1/10W R5842 RGF47R0JTCANL MT-GLAZE 47 JA 1/10W R6284 RGF1002JTCANL MT-GLAZE...

  • Page 24: Power Board

    Schematic Schematic Part No. Part No. Description Description Location Location MISCELLANEOUS POWER BOARD A001 1AA0B10N237A0 ASSY, PWB, MAIN_Z-N4TP U901 1LB4U20B02300 UNIT, POWER A002 1AA0B10N225E0 ASSY, PWB, CONTROL-N6FE Non-servicable part. No discreet parts are supplied for this PC A003 1AA0B10N24400 ASSY, PWB, SUB PC-N6CE board.

  • Page 25: Cabinet Parts List

    DESCRIPTION KEY NO. PARTS NO. DESCRIPTION 1AA2CAM0588-A CABINET FRONT 1JC6P1P0301- OWNERS MANUAL 1AA2CBM0429A- CABINET BACK 1LB0U10B01803 REMOCON, GXCC 1AA2SDM0172-A STAND COVER 1AA2RCM0305-B RC-BATTERY LID-GXCB 1AA2BUM0529-A BUTTON UNITED 1AA2DEM0444-- DEC IND 1AA2DES0915-A DEC SHEET HDTV 1AV2BAAS016AA BADGE, SANYO – 25 –...

  • Page 26: Component And Testpoint Locations

    COMPONENT AND TESTPOINT LOCATIONS MAIN BOARD PARTS SIDE – 26 –...

  • Page 27

    MAIN BOARD SOLDER SIDE – 27 –...

  • Page 28

    CONTROL BOARD PART SIDE CONTROL BOARD SOLDER SIDE PC BOARD PART SIDE PC BOARD SOLDER SIDE – 28 –...

  • Page 29: Block Diagram Power Lines

    BLOCK DIAGRAM POWER LINES – 29 –...

  • Page 30: Block Diagram Signal Lines

    BLOCK DIAGRAM SIGNAL LINES – 30 –...

  • Page 31: Ic Block Diagrams

    IC BLOCK DIAGRAMS IC001, Audio AMP IC1251 Audio Select X-COMMON Y-COMMON – 31 –...

  • Page 32

    IC BLOCK DIAGRAMS (CONT.) IC1600, DC to DC Converter IC1240, Component Selecter – 32 –...

  • Page 33

    IC1651, DC to DC Converter IC1671, DC to DC Converter – 33 –...

  • Page 34

    IC BLOCK DIAGRAMS (CONT.) IC5500 Screen Controller – 34 –...

  • Page 35

    IC6270, Audio A/D IC3200, Audio Controller – 35 –...

  • Page 36

    IC BLOCK DIAGRAMS (CONT.) IC5700, DDR: Double Data Rate SDRAM – 36 –...

  • Page 37: Troubleshooting Flow Charts

    TROUBLESHOOTING FLOW CHARTS NO POWER 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 (IC801), Crystal (X801), Power Unit (or the voltage to some lines is not supplied.) After a few seconds, the set will be switched off.

  • Page 38

    TROUBLESHOOTING FLOW CHARTS (CONT.) NO VIDEO Check: RF(TV), Analog(TV), All Inputs? Line: A6100 21pin - IC5500 AE2pin A6100 20pin - IC5500 AF2pin Digital(TV) only Parts: Around A6100 (TU_IF), IC5500 Check: AV1 only Line: Terminal(CV) - Q5800,5804 - IC5500 W3pin Terminal(Y) - Q5801,5805 - IC5500 U3pin Terminal(C) - Q5802,5806 - IC5500 V3pin Parts: Around IC5500 Check:...

  • Page 39

    NO AUDIO Is there Check: All Modes ? signal at speaker Speaker (SP901, SP902) terminal ? Is there Check: signal at IC001 3pin (L) Line: IC001 7pin - IC800 (CPU) 22pin (Mute) or 5pin (R) ? Parts: Around IC001 (Audio AMP.) Check: Parts: Around IC3200 (Audio Control) Check:...

  • Page 40: Control Port Functions

    CONTROL PORT FUNCTIONS System Control (CPU : IC800) Name Function Description P12/SCK0 Reserve (OPEN) P13/SO1 Reserve (OPEN) P14/SI1/SB1 IIC-BUS for NV (DATA)Active ‘L’for IC data NV P15/SCK1 IIC-BUS for NV (CLOCK)Active ‘L’ for IIC clock NV P16/T1PWML REG SW2 REG SW2 (ON:High OFF:Low) P17/T1PWMH/BUZ REG SW3 REG SW3 (ON:High OFF:Low)

  • Page 41

    Name Function Description P73/INT3/T0IN Rcin RC Input RESET in Microcomputer Reset RESET:Low Normal:High XT1/AN10 Connect to VDD1 XT2/AN11 Reserve (OPEN) VSS1 GND (0Vdc) Main Clock IN (Fosc=8MHz) Main Clock OUT (Fosc=8MHz) VDD1 Power IN 5V (5Vdc ± 10%) Key in Key input AFT(Reserve) PANEL READY...

  • Page 42: Signal Flow Charts

    SIGNAL FLOW CHARTS DDR2 DDR2 SPI Flash 256Mbit 256Mbit (32 Mbit) (400MHz) (400MHz) Video Video 2 (Component) Video 3 (Component) MPEG2 DEMUX Video RS-232C Decode PC (D-Sub) Clock (24.576MHz) RESET Video Scaler S/P DIF RF-IN Audio NTSC Digital/ Processing Decoder Analog Unit I²C...

  • Page 43

    DDR2 DDR2 SPI Flash 256Mbit 256Mbit (32 Mbit) (400MHz) (400MHz) Video 2 (Component) Video 3 (Component) MPEG2 Video DEMUX RS-232C Video Decode PC (D-Sub) Clock (24.576MHz) RESET Video Scaler S/P DIF RF-IN Audio NTSC Digital/ Processing Decoder Analog Unit I²C Back Light cont Tuner Audio...

  • Page 44

    SIGNAL FLOW CHARTS (CONT.) DDR2 DDR2 SPI Flash 256Mbit 256Mbit (32 Mbit) (400MHz) (400MHz) Video 2 (Component) Video 3 (Component) MPEG2 DEMUX Video RS-232C Decode PC (D-Sub) Clock (24.576MHz) RESET Scaler Video S/P DIF RF-IN 8VSB Audio Digital/ Processing Analog NTSC Unit I²C...

  • Page 45

    DDR2 DDR2 SPI Flash 256Mbit 256Mbit (32 Mbit) (400MHz) (400MHz) Video 2 (Component) Video 3 (Component) MPEG2 DEMUX Video RS-232C Decode PC (D-Sub) Clock (24.576MHz) RESET Scaler Video S/P DIF RF-IN Audio NTSC Digital/ Processing Decoder Analog Unit I²C Back Light cont Tuner Audio Back Light level...

  • Page 46

    SIGNAL FLOW CHARTS (CONT.) DDR2 DDR2 SPI Flash 256Mbit 256Mbit (32 Mbit) (400MHz) (400MHz) Video 2 (Component) Video 3 (Component) MPEG2 DEMUX Video RS-232C Decode PC (D-Sub) Clock (24.576MHz) Video RESET Scaler S/P DIF RF-IN Audio NTSC Digital/ Processing Decoder Analog Unit I²C...

  • Page 47: 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 48: Ic, Diode, And Transistor Pin Layouts

    IC, DIODE, AND TRANSISTOR PIN LAYOUTS INTEGRATED CIRCUITS PHOTO COUPLERS DIODES TRANSISTORS TOP VIEW TOP VIEW MARK COUNT TERMINALS IN ARROW DIRECTION SIDE VIEW INFRARED EMITTING B ... BASE C ... COLLECTOR A..ANODE E ... EMITTER K..CATHODE CHIP TRANSISTORS CHIP RESISTORS TOP VIEW TOP VIEW 12 x 10 = 12K ohm...

  • Page 49: Pc Board Connections And Locations

    PC BOARD CONNECTIONS AND LOCATIONS – 49 –...

  • Page 50: Capacitor And Resistor Code Chart

    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 March 2008 SMC Published in U.S.A.

  • Page 51: Schematic Diagrams

    MODEL DP19648 Chassis No. P19648-00 SCHEMATIC DIAGRAMS TO SPEAKER ELECTROSTATICALLY SENSATIVE DEVICES Many solid-state devices (especially Integrated Circuits) are Electrostatically J10EA043N GREASE ZB13 IC001E PC_AUDIOL Sensitive, and, therefore, require special handling techniques as described under IC001A :ZB29 2HEA0353 PC_AUDIOR “Servicing Electrostatically Sensitive Devices, ” on page two in this service literature.

  • Page 52

    MODEL DP19648 Chassis No. P19648-00 SCHEMATIC DIAGRAMS D6053 D6052 1SS355 UDZS3.0BG :1SS352G P_FAIL IC6050 CL6376 C6352 PQ070XNA1ZPP C6055 LVDS_POW L6051 KZ0.1LZF 10KK1LZB 1/10GZ0.0 CL6050 *C6354 3.3V 16EM100LBVD R6051 L6366 1/10GZ0.0 1/10GF560C L6367 R6375 C6056 R6052 L5800 1/10GZ0.0 D D G...

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