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Sanyo Vizon DP32746 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 - 5
Power Failure Circuit . . . . . . . . . . . . . . . . 6
Mechanical Disassemblies . . . . . . . . . 7 - 8
Chassis Electrical Parts List . . . . . . . 9 - 20
Cabinet Parts List . . . . . . . . . . . . . . . . . . 21
Locations . . . . . . . . . . . . . . . . . . . 22 - 25
Control Port Functions. . . . . . . . . . . 35 - 36
Schematic Notes . . . . . . . . . . . . . . . . . . . 37
Pin Layouts. . . . . . . . . . . . . . . . . . . . . . . . 38
Capacitor and Resistor Codes . . . . . . . . 40
Schematic Diagrams . . . . . . . . . . . . 41 - 48
DP32746, N3HE, PRODUCT CODE 111379904
with a double "Z" is a registered trademark
of Sanyo Manufacturing Corporation.
Remote Control Digital
Color Television
AS
DP32746
ORIGINAL VERSION
Chassis No. P32746-00
NOTE: Match the Chassis No. on
POWER
VOL
CH
Specifications
Power Rating . . . . . . . . . . . . . . . . . . . . . . . . 120VAC
Antenna Input Impedance . . . . . . . . . . . . . . . . . 75Ω
Receiving Channel . . . . . . . . . . . . . . . . 2 - 13 (VHF),
Remote Ready . . . . . . . . . . 32 Key Remote Control
Sound Output . . . . . . . . . . . . . . . . . . . . . . 3.0 W/CH
Intermediate Frequency
Picture IF Carrier . . . . . . . . . . . . . . . . . . 45.75MHz
Sound IF Carrier . . . . . . . . . . . . . . . . . . 41.25MHz
Color Sub Carrier . . . . . . . . . . . . . . . . . 42.17MHz
LCD . . . . . . . . . . . . . . . . . . . . . . . . . . . T315XW01 V5
Cabinet Dimensions
Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 812mm
Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . 614mm
Depth including base . . . . . . . . . . . . . . . . 201mm
FILE NO.
(U.S.A.)
(CANADA)
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.
155W (Avg), 2.7A (Max)
UHF/VHF/CATV
14 - 69 (UHF),
01, 14-94, 95-125 (CATV)
SM
REFERENCE No.
780112

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  • Page 1: Table Of Contents

    “Z” is a registered trademark of Sanyo Manufacturing Corporation. FILE NO. SERVICE MANUAL Remote Control Digital DP32746 (U.S.A.) Color Television (CANADA) ORIGINAL VERSION Chassis No. P32746-00 NOTE: Match the Chassis No. on the unit’s back cover with the Chassis No.
  • Page 2: Safety Instructions

    SAFETY INSTRUCTIONS SAFETY PRECAUTIONS PRODUCT SAFETY NOTICE WARNING: The chassis of this receiver has a floating ground with the hen replacing components in a receiver, always keep in mind potential of one half the AC line voltage in respect to earth ground. the necessary product safety precautions.
  • 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 ser- Volume – Enter Service Menu vice adjustments. ON-SCREEN SERVICE MENU SYSTEM 1. Enter the Service Menu: •...
  • Page 4 ON-SCREEN SERVICE MENU 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

    SERVICE ADJUSTMENTS (Continued) SEPARATION ADJUSTMENT MULTI-SOUND SECTION ADJUSTMENTS 7. Turn off the receiver and disconnect the AC power cord Note: Multi-Sound Section must be adjusted after (AC 120V line). A101 (U/V Tuner), IC3401 (MTS Decoder), Digital 8. Connect oscilloscope CH1 to TP317 and CH2 to TP318 Module or IC802 (EEPROM) is replaced.
  • Page 6: Power Failure Circuit

    POWER FAILURE CIRCUIT Check the following if the unit is turned off by the power This unit is equipped with a Power Failure Detector function failure detector. included in the CPU which checks for an abnormal condi- tion in the chassis power supplies, including the power 1.
  • Page 7: Mechanical Disassemblies

    MECHANICAL DISASSEMBLY CAUTION: This LCD TV uses several different kinds of screws. Using the correct screw is neces- sary 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 cush- ioned surface to protect the screen and finish.
  • Page 8 MECHANICAL DISASSEMBLY (CONT.) 1: DIGITAL BOARD REMOVAL 1-1. Remove the tuner nuts from the analog and digital tuners and remove earth plate connecting the tuners. 1-2. Remove 4 screws (3X6) to take off the digital board. 2: MAIN BOARD REMOVAL 2-1.
  • Page 9: 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 STAR (#) IN THIS PARTS LIST AND THE SCHEMATIC DIAGRAM DESIGNATE COMPONENTS IN WHICH SAFETY CAN BE OF SPECIAL SIGNIFICANCE.
  • Page 10 Schematic Schematic Part No. Part No. Description Description Location Location MAIN PC BOARD C1063 CEXLB1C100WAN ELECT 10U M C1064 CK1H104ZLZFNG CERAMIC 0.1U Z C1065 CEXLB1C100WAN ELECT 10U M CAPACITORS C1066 CEXLB1H2R2WAN ELECT 2.2U M C002 CEXLB1E101WAN ELECT 100U M C1067 CEXLB1H2R2WAN ELECT 2.2U M C004...
  • Page 11 Schematic Schematic Part No. Part No. Description Description Location Location C3402 CEXLB1HR10WAN ELECT 0.1U M INTEGRATED CIRCUITS C3403 CPXLB1H4R7ZAN NP-ELECT 4.7U M IC001 QLA42052-E--N IC LA42052-E C3404 CK1H562KLZBNG CERAMIC 5600P K IC801 QXXAAJQ0724-- IC LC87F4164AU-LCD001 C3405 CK1H123KLZBNG CERAMIC 0.012U K IC801 QXXAVC755---M IC LC8741XXXA...
  • Page 12 Schematic Schematic Part No. Part No. Description Description Location Location L1608 RGFR000ZTAANL MT-GLAZE0.000 ZA 1/10W TRANSISTORS L1609 RGFR000ZTAANL MT-GLAZE0.000 ZA 1/10W Q001 T2SC2412K-R-P TR 2SC2412K-T-96-R L1610 RGFR000ZTAANL MT-GLAZE0.000 ZA 1/10W T2SC2412K-S-P TR 2SC2412K-T-96-S L1611 1AV4L26B2770G INDUCTOR, 220 OHM T2SC2812-L6-P TR 2SC2812-L6-TB L1612 1AV4L26B2770G INDUCTOR, 220 OHM...
  • Page 13 Schematic Schematic Part No. Part No. Description Description Location Location Q810 T2SC2412K-R-P TR 2SC2412K-T-96-R T2SA1179-M7-P TR 2SA1179-M7-TB T2SC2412K-S-P TR 2SC2412K-T-96-S T2SA1179N-M6P TR 2SA1179N-M6-TB T2SC2812-L6-P TR 2SC2812-L6-TB T2SA1179N-M7P TR 2SA1179N-M7-TB T2SC2812-L7-P TR 2SC2812-L7-TB T2SA1235A1E-P TR 2SA1235A1E T2SC2812N-L6P TR 2SC2812N-L6-TB T2SA1235A1F-P TR 2SA1235A1F T2SC2812N-L7P TR 2SC2812N-L7-TB Q1063...
  • Page 14 Schematic Schematic Part No. Part No. Description Description Location Location Q1251 T2SC3928A1S-P TR 2SC3928A1S Q3404 T2SC2412K-R-P TR 2SC2412K-T-96-R (Cont.) Q1252 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...
  • Page 15 Schematic Schematic Part No. Part No. Description Description Location Location R831 RGF4702JTCANL MT-GLAZE 47K JA 1/10W R1006 RGF47R0JTCANL MT-GLAZE 47 JA 1/10W R832 RGF4702JTCANL MT-GLAZE 47K JA 1/10W R1007 RGF47R0JTCANL MT-GLAZE 47 JA 1/10W R833 RGF5601JTCANL MT-GLAZE 5.6K JA 1/10W R1008 RGF2200JTCANL MT-GLAZE...
  • Page 16 Schematic Schematic Part No. Part No. Description Description Location Location R1080 RGF5600JTCANL MT-GLAZE 560 JA 1/10W R1688 RGF2202JTCANL MT-GLAZE 22K JA 1/10W R1081 RGF47R0JTCANL MT-GLAZE 47 JA 1/10W R1690 RGF47R0JTCANL MT-GLAZE 47 JA 1/10W R1082 RGF5600JTCANL MT-GLAZE 560 JA 1/10W R1692 RGF1002JTCANL MT-GLAZE...
  • Page 17 Schematic Schematic Part No. Part No. Description Description Location Location # C647 SC1062 1AV4Z30B0220G SURGE-ABSORBER CEXAV2D821CJN ELECT 820U M 200V SC1063 1AV4Z30B0220G SURGE-ABSORBER CEXAV2D821FDN ELECT 820U M 200V SC1064 1AV4Z30B0220G SURGE-ABSORBER C648 CK1C475KGMBNG CERAMIC 4.7U K # C649 SC1065 1AV4Z30B0220G SURGE-ABSORBER CKXAV2E102ABW CERAMIC...
  • Page 18 Schematic Schematic Part No. Part No. Description Description Location Location C1638 CK1C225ZGMFNG CERAMIC 2.2U Z INTEGRATED CIRCUITS C1692 CE1C222MMYANN ELECT 2200U M IC603 QL6598D-----P IC L6598D CE1C222M6RANN ELECT 2200U M IC671 QUPC1093J---N IC UPC1093J IC1602 QMR4010-7101N IC MR4010-7101 IC1604 QUPC1093J---N IC UPC1093J DIODES D601...
  • Page 19 Schematic Schematic Part No. Part No. Description Description Location Location T2SC2812N-L7P TR 2SC2812N-L7-TB R652 RGA56R0JTDANL MT-GLAZE 56 JA 1/2W # R653 T2SC3928A1R-P TR 2SC3928A1R RG11202JTEANL MT-GLAZE 12K JA T2SC3928A1S-P TR 2SC3928A1S R654 RGF2200JTCANL MT-GLAZE 220 JA 1/10W Q641 T2SK3555-FMYN TR 2SK3555-01MR-MY R655 RGF1003JTCANL MT-GLAZE...
  • Page 20 Schematic Schematic Part No. Part No. Description Description Location Location R1636 RGE7501JTBANL MT-GLAZE 7.5K JA 1/8W R1905 RGF2201JTCANL MT-GLAZE 2.2K JA 1/10W R1637 RGE8201JTBANL MT-GLAZE 8.2K JA 1/8W R1906 RGF3901JTCANL MT-GLAZE 3.9K JA 1/10W # R1638 RFXAVA471JFNN FUSIBLE RES 470 J- 1/2W R1907 RGF5601JTCANL MT-GLAZE...
  • Page 21: Cabinet Parts List

    1AA2CBM0392-- CABINET BACK-N3HE 1JC6P1P0232-- OWNER’S MANUAL (French) 1AA2BUM0529-- BUTTON UNITED-N3HE 1AV0U10B43101 ASSY, REMOCON 1AA2CPM0005-- CAP RC-G5JFM 1AA2RCM0295-A RC BATTERY LID 1AA2MGF0871-- MOUNTING STAND-N3HE 1AA2DES0861-- DEC SHEET DTV-H3EPM 1AV2BAAS015-- BADGE, SANYO*53.5X12L53.5 1AV2BAAS015A- BADGE, SANYO*53.5X12L53.5 1AA2DES0712-F DEC SHEET VIZON-N2TE — 21 —...
  • Page 22: Component And Testpoint Locations

    COMPONENT AND TESTPOINT LOCATIONS MAIN BOARD PARTS SIDE PWB,MAIN-N3HE L1852 1AA4B10N16200 A C014 JP1853 C1102 C1101 IC001 JP1852 K1101 IC001A C002 C008 C005 C009 K_IIC L1802 R1804 R1802 C003 C006 R1806 R009 C013 C1855 R1803 C1854 R1807 C1853 R1808 C1852 R004 R006 R1805...
  • Page 23 MAIN BOARD FOIL SIDE PWB,MAIN-N3HE IC001 L002 1AA4B10N16200 A Q1101 Q1102 IC001A Q001 R1106 R1104 SC1802 SC1102 SC1804 SC1801 SC1803 R1801 K1101 C012 K_IIC SC1806 SC1805 SC1807 C1801 K1061 R3418 K1021 SC1025 K1001 C3421 Q811 Q810 IC1641 IC1621 IC1631 IC1641A IC1631A IC1621A IC1611...
  • Page 24 COMPONENT AND TESTPOINT LOCATIONS (Cont.) POWER BOARD PARTS SIDE Q641H1 — 24 —...
  • Page 25 POWER BOARD FOIL SIDE Q641H1 — 25 —...
  • Page 26: Block Diagram Power Lines

    BLOCK DIAGRAM POWER LINES — 26 —...
  • Page 27: Block Diagram Signal Lines

    BLOCK DIAGRAM SIGNAL LINES — 27 —...
  • Page 28 BLOCK DIAGRAM POWER BOARD Fuse Varistor Line Filter LF641 F601 VA611 Surge Absorber Varistor VA612 SC611 K601 (1, 2) LF642 Line Filter R609 RL670 Power ON Q670 Rush Current Control A13V (Thermistor) DTV & Standby Power Supply AC Rectify T1606 D1606/D1617 RL1603 Power ON...
  • Page 29: Ic Block Diagrams

    IC BLOCK DIAGRAMS Audio Processor (IC3401) — 29 —...
  • Page 30 IC BLOCK DIAGRAMS (CONT.) Audio AMP (IC001) Standby Standby SW CH 1 CH 1 CH 1 CH 1 Input Output (in) (out) RNf1 PRE-GND POWER TSD Protector (For input) (Thermal protection curcuit) (For output) RNf2 CH 2 CH 2 CH 2 Output CH 2 (in)
  • Page 31 IC1602 Oscillator, Regulator Corrector Start-up circuit UVLO Latch circuit reset comparator UVLO comparator Start-up circuit cc(start) cc(startup off) OVP comparator cc(stop) cc(startup on) Thermal Shutdown circuit Soft drive circuit Zero current detection circuit Turn-on dead timer OCP threshold comparator Standby circuit TH(OCL) Burst mode OCP threshold comparator Restart timer...
  • Page 32: Troubleshooting Flow Charts

    TROUBLESHOOTING FLOW CHARTS NO POWER fuse (F601) Check: Varistor (VA611), Diode Bridge (D603), open? IC (IC1602, IC603), Thermistor (R609), Diode (D1618) the voltage Check: to "5V_STBY" line IC (IC1602,IC1604), Diode (D1607, D1608, supplied? D1609, D1610, D1613, D1615, D1616, D1620, D1629) All 0V (except '5V_STBY' line) the voltage to all lines...
  • Page 33 NO VIDEO Check: RF(TV) only All Inputs? Line: A101 17pin - Q101 - IC1201 2pin Parts: Around A101 (TU_IF), Q101 AV1 only Check: Line: IC1201 1pin (Composite Video: CV) AV2 only IC1201 5pin (S-Input: Y) Digital Module K6MA 46pin (S-Input: C) Check: Line: Q1021 - Digital Module K6MA 34pin (Y)
  • Page 34: Trouble Shooting Flow Charts

    TROUBLESHOOTING FLOW CHARTS (CONT.) NO AUDIO All Modes ? Is there Check: signal at speaker Speaker (SP901, SP902) terminal ? Is there Check: signal at IC001 2pin (L) Line: IC001 1pin - Q001(C) - IC801 (CPU) 38pin (Mute) or 4pin (R) ? Parts: Around IC001 (Audio AMP.), Q001 Check: Parts: Around IC3401 (Audio Control)
  • Page 35: Control Port Functions

    CONTROL PORT FUNCTIONS System Control (CPU : IC801) Pin Name Function I/O Description CVin Reserve GND (0Vdc) P70/INT0/TOLCP LINE OFF Detect AC Voltage Reduction (Normal: High) P71/INT1/TOHCP Reserve (Open) P72/INT2/TOIN Reserve (Open) P73/INT3/TOIN RC in RC Input Key in Key Input AFT S-Figure in AFT S-Figure Input P82/AN2...
  • Page 36: Control Port Functions

    CONTROL PORT FUNCTIONS (Cont.) System Control (CPU : IC801 Cont.) Pin Name Function I/O Description P12/SCK0 CRT/FPD Option Setting (CRT: High, FPD: Low) PDP/LCD Option Setting (PDP: High, LCD: Low) PWMA Reserve (Open) PWMB Reserve (Open) PWMC Reserve (Open) P17/PWMD Reserve (Open) Reserve...
  • Page 37: Schematic Notes

    SCHEMATIC DIAGRAMS 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 38: 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 39: Pc Board Connections And Locations

    PC BOARD CONNECTIONS AND LOCATIONS — 39 —...
  • Page 40: Capacitor And Resistor Codes

    Y ......Wire Wound C ......Solid D ......Carbon Film W ......Wire Wound For parts or service contact Sanyo Manfacturing Corporation P .O. Box 2000 3333 Sanyo Road Forrest City, Arkansas 72335-2000 March 2006 SMC Published in U.S.A.
  • Page 41: Schematic Diagrams

    MODEL DP32746 Chassis No. P32746-00 SCHEMATIC DIAGRAMS To LCD Module ELECTROSTATICALLY SENSATIVE DEVICES DP26746 E_PWM I_PWM Many solid-state devices (especially Integrated Circuits) are Electrostatically DP32746 I_PWM E_PWM Sensitive, and, therefore, require special handling techniques as described under “Servicing Electrostatically Sensitive Devices, ” on page two in this service literature. ASSY,PWB,POWER RT604 1/10GZ0C...
  • Page 42 MODEL DP32746 Chassis No. P32746-00 SCHEMATIC DIAGRAMS To LCD Panel (LVDS) To Digital Board (K6MA) ASSY,PWB,MAIN K_DL KLCD L1678 L1679 J10EA063N 5/12V_LVDS C1666 C1665 R1662 KZ0.1LZF KZ0.1LZF C842 KLCD_G L1676 L1675 KZ0.1LZF 1/10GJ820C L1677 L1674 K8MA R891 1/10GZ0C BL_ON R821 LINE_OFF 1/10GJ Q801...

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