Sanyo DP23625 Service Manual
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Sanyo DP23625 Service Manual

Sanyo DP23625 Service Manual

Sanyo dp23625 remote control digital color television
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SERVICE MANUAL

Contents
Safety Instructions . . . . . . . . . . . . . . . . . . 2
Service Adjustments . . . . . . . . . . . . . 3 - 10
Power Failure Circuit . . . . . . . . . . . . . . . 11
Mechanical Disassemblies . . . . . . . 12 - 13
Chassis Electrical Parts List . . . . . . 14 - 25
Cabinet Parts List . . . . . . . . . . . . . . . . . . 26
Locations . . . . . . . . . . . . . . . . . . . 27 - 31
Control Port Functions. . . . . . . . . . . 40 - 41
Schematic Notes . . . . . . . . . . . . . . . . . . . 42
Pin Layouts. . . . . . . . . . . . . . . . . . . . . . . . 42
Capacitor and Resistor Codes . . . . . . . . 43
Schematic Diagrams . . . . . . . . . . . . 45 - 56
DP23625, N2TE, PRODUCT CODE 111377004
Remote Control Digital
Color Television
AS
FILE NO.
DP23625
ORIGINAL VERSION
Chassis No. 23625-00
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),
01, 14-94, 95-125 (CATV)
Remote Ready . . . . . . . . . . 25 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
LCD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V230W1-L02
Cabinet Dimensions
Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 692mm
Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . 385mm
Depth including base . . . . . . . . . . . . . . . . 181mm
REFERENCE No.
(U.S.A.)
(CANADA)
95W (Avg), 1.8A (Max)
UHF/VHF/CATV
14 - 69 (UHF),
SM
780104

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Summary of Contents for Sanyo DP23625

  • Page 1: Table Of Contents

    Height ......385mm Depth including base ....181mm DP23625, N2TE, PRODUCT CODE 111377004 REFERENCE No.

  • Page 2: Safety Instructions

    SAFETY INSTRUCTIONS SAFETY PRECAUTIONS READING SHOULD NOT EXCEED 750 mV. 1. Comply with all caution and safety-related notes provided AC VOLTMETER on the side of the cabinet, inside the cabinet, and on the (5000 ohms per volt or more sensitivity) chassis, 2.

  • 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- vice adjustments. Volume – Enter Service Menu ON-SCREEN SERVICE MENU SYSTEM 1. Enter the Service Menu: •...
  • Page 4 ON-SCREEN SERVICE MENU Name Initial Data Note V ENH GAIN TV RF input V ENH GAIN OTHER Except RF V ENH MAX POINT TV RF input V ENH MAX POINT OTHER Except RF V ENH SLICE LEVEL TV RF input V ENH SLICE LEVEL OTHER Except RF FENH TV...
  • Page 5 Name Initial Data Note HUE–480i/p 480i/p input TOF TV RF input TOF OTHER Except RF Y–CLAMP–MAIN Except 480i/p Y–CLAMP–480i 480i input Y–CLAMP–480p 480p input C–CLAMP–MAIN Except 480i/p C–CLAMP–480i 480i input C–CLAMP–480p 480p input C–CLAMP F–MAIN Except 480i/p C–CLAMP F–480i 480i input C–CLAMP F–480p 480p input COL–KILLER TV...
  • Page 6 Name Initial Data Note C NOISE OTHER Except RF 480i Sub–Cont Component (480i) input (Difference) ↓ 480i Sub–Brightness ↓ 480i Sub–Color ↓ 480i Sub–Tint ↓ 480i Sub–Sharp 480p Sub–Cont Component (480p) input (Difference) ↓ 480p Sub–Brightness ↓ 480p Sub–Color ↓ 480p Sub–Tint ↓...
  • Page 7 Name Initial Data Note White–AV–R Composite (AV) input, White Balance (Standard) ↓ White–AV–G ↓ White–AV–B Black–AV–R Composite (AV) input, Black Balance (Standard) ↓ Black–AV–G ↓ Black–AV–B White–S–R S (AV) input, White Balance (Difference) ↓ White–S–G ↓ White–S–B Black–S–R S (AV) input, Black Balance (Difference) ↓...
  • Page 8 Name Initial Data Note BLight–Bright Back Light Bright (PWM value) BLight–Mid Back Light Middle (PWM value) BLight–Dark Back Light Dark (PWM value) APL–SW APL Switch APL–PER AI Cycle (8ms/step) APL–LO APL Low-Pass and Inside Region Threshold APL–HI APL Inside and High Region Threshold APL–MIN Gamma Minimum Value (Table No.) APL–CEN...
  • Page 9 Name Initial Data Note VST FULL VST JUST VST ZOOM VST NORMAL VUP FULL 480p VUP JUST 480p VUP ZOOM 480p VUP NORMAL 480p VSC FULL 480p VSC JUST 480p VSC ZOOM 480p VSC NORMAL 480p HSC1 N FULL 480p HSC1 N JUST 480p HSC1 N ZOOM 480p HSC1 N NORMAL 480p...

  • Page 10: White Balance Adjustment

    SERVICE ADJUSTMENTS (Continued) The White Balance Level adjustment data will be written WHITE BALANCE ADJUSTMENT automatically in the following Service Menu: Composite (External Video Input) No 89 (R), 8A (G), 8B (B) 1. Connect a color-bar generator to the external (compos- S (Y/C) No.

  • Page 11: Power Failure Circuit

    POWER FAILURE CIRCUIT CPU (IC801) is programmed so the set will go to the standby mode when there is circuit failure as described below. (Refer to “Block Diagram Power Lines” and “Block Diagram Power Board”). 1. Power Failure 1: Detected voltage failure for digital circuit. (Connected to IC801 pin 1.) 2.

  • Page 12: Mechanical Disassembly

    MECHANICAL DISASSEMBLY TUNER CAUTION: This LCD TV uses several different kinds of CATV 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 13 MAIN BOARD REMOVAL Remove 5 screws (E: 3X10) to remove the main board Hook Hook CONTROL with the terminal base (TMNL/B) and audio output jacks (MO/JACK) (assembly parts). CH/HLD RC BOARD REMOVAL Remove a screw (F: 4X14) to remove the RC board. POWER BOARD REMOVAL TMNL/B Remove 4 screws (G: 3X10) to remove the power board...

  • Page 14: 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 15: Ceramic

    Schematic Schematic Part No. Part No. Description Description Location Location C1600 403 135 0707 CERAMIC 1U K C632 403 393 0006 ELECT 470U M 403 420 1402 ELECT 470U M C1601 403 135 0707 CERAMIC 1U K # C1602 C633 403 279 0106 CERAMIC 0.1U Z...
  • Page 16 Schematic Schematic Part No. Part No. Description Description Location Location C2104 403 234 9908 CERAMIC 27P J C2008 403 387 5307 ELECT 47U M 6.3V 403 392 1202 ELECT 47U M 6.3V C2106 403 364 7508 CERAMIC 10P J C2009 403 235 6203 CERAMIC 0.01U Z...
  • Page 17 Schematic Schematic Part No. Part No. Description Description Location Location C3026 403 345 6605 CERAMIC 1U Z D1600 407 007 7702 DIODE EU2A C3027 403 345 6605 CERAMIC 1U Z D1601 407 007 7702 DIODE EU2A # D1602 C3028 403 345 6605 CERAMIC 1U Z 407 231 2801...
  • Page 18 Schematic Schematic Part No. Part No. Description Description Location Location COILS TRANSISTORS # LF1600 645 019 3873 LINE FILTER Q002 405 014 4509 TR 2SC2412K-T-96-R L601 645 075 0564 INDUCTOR, 33U M 405 014 4608 TR 2SC2412K-T-96-S L606 645 073 9156 INDUCTOR, 1000U M 405 015 8724 TR 2SC2812-L6-TB...
  • Page 19 Schematic Schematic Part No. Part No. Description Description Location Location Q1606 405 014 4509 TR 2SC2412K-T-96-R 405 163 1701 TR 2SC2812N-L7-TB 405 173 9803 TR 2SC3928A1R 405 014 4608 TR 2SC2412K-T-96-S 405 173 9902 TR 2SC3928A1S 405 015 8724 TR 2SC2812-L6-TB Q677 405 014 4509 TR 2SC2412K-T-96-R...
  • Page 20 Schematic Schematic Part No. Part No. Description Description Location Location Q2142 405 134 5925 TR 2SA1037AK T146 R Q2092 405 134 5925 TR 2SA1037AK T146 R 405 147 2205 TR 2SA1037AK T146 S 405 147 2205 TR 2SA1037AK T146 S 405 002 0308 TR 2SA1037K-T-96-R 405 002 0308...

  • Page 21: Fusible

    Schematic Schematic Part No. Part No. Description Description Location Location Q3031(Cont)405 163 1602 TR 2SC2812N-L6-TB RB2001 645 037 0663 R-NETWORK 22X4 0.063W 405 163 1701 TR 2SC2812N-L7-TB 645 021 4943 R-NETWORK 22X4 1/16W 405 173 9803 TR 2SC3928A1R RB2002 645 037 0663 R-NETWORK 22X4 0.063W 405 173 9902 TR 2SC3928A1S...
  • Page 22 Schematic Schematic Part No. Part No. Description Description Location Location R677 401 162 3005 MT-GLAZE 22K JA 1/10W R856 401 256 3607 MT-GLAZE 15K JA 1/10W R678 401 162 3005 MT-GLAZE 22K JA 1/10W R862 401 256 7605 MT-GLAZE 3.9K JA 1/10W R691 401 150 6001 MT-GLAZE...
  • Page 23 Schematic Schematic Part No. Part No. Description Description Location Location R1665 401 256 6301 MT-GLAZE 47K JA 1/10W R1209 401 150 6001 MT-GLAZE 0.000 ZA 1/10W R1211 401 150 6001 MT-GLAZE 0.000 ZA 1/10W R1666 401 162 3005 MT-GLAZE 22K JA 1/10W R1212 401 150 6001 MT-GLAZE...
  • Page 24 Schematic Schematic Part No. Part No. Description Description Location Location R2101 401 256 6004 MT-GLAZE 27K JA 1/10W R3032 401 150 5806 MT-GLAZE 100K JA 1/10W R2102 401 150 5905 MT-GLAZE 10K JA 1/10W R3033 401 150 5905 MT-GLAZE 10K JA 1/10W R2103 401 150 6001 MT-GLAZE...
  • Page 25 Schematic Schematic Part No. Part No. Description Description Location Location R7302 401 150 6001 MT-GLAZE 0.000 ZA 1/10W SWITCHES R7303 401 150 6001 MT-GLAZE 0.000 ZA 1/10W SW1901 645 026 2791 SWITCH, PUSH 1P-1TX1 R7304 401 150 6001 MT-GLAZE 0.000 ZA 1/10W SW1902 645 026 2791 SWITCH, PUSH 1P-1TX1...

  • Page 26: Cabinet Parts List

    610 320 2761 DEC AV SHEET-N2TE 610 320 2730 COVER BTM-N2TE 610 320 2969 STAND TOP-N2TE 610 320 2952 STAND BASE-N2TE 610 320 2747 DEC RC-N2TE 645 066 7213 BADGE, SANYO*35.0X7.5L35.0 610 320 2754 DEC SHEET VIZON-N2TE — 26 —...

  • Page 27: Component And Testpoint Locations

    COMPONENT AND TESTPOINT LOCATIONS CONTROL BOARD PART SIDE SC191 SC1903 SC1902 SC1906 R1908 J1901 J1902 R1907 R1906 R1909 SW1901 SC1901 R1902 R1904 SC193 SW1903 SW1906 SW1902 R1901 R1903 SC1904 CONTROL BOARD FOIL SIDE PWB,CONTROL N2GE PWB,CONTROL N2GE B10N0710B **** B10N0710B **** SC192 RC BOARD PART SIDE J1962...
  • Page 28 COMPONENT AND TESTPOINT LOCATIONS (Cont.) MAIN BOARD PARTS SIDE J7598 SW7301 J7599 Q3012 SC04 SC05 XL1002 Q3011 K1001 R1004 C018 C013 R1031 R1029 L7599 L7598 L7597 R1032 XL1011 SC3012 C1021 R3013 R2132 C3082 R2112 R2133 R3014 TPS_CLK R7305 R7296 R2113 R7599 TP7551 J7554...
  • Page 29 MAIN BOARD FOIL SIDE — 29 —...
  • Page 30 COMPONENT AND TESTPOINT LOCATIONS (Cont.) POWER BOARD PARTS SIDE C1628 C1632 R1629 C1626 IC1600 C1617 L1607 C1622 C1623 HEAT SINK (D1610&D1613) L1600 C1615 D1610 D1613 C1614 T1601H16 T1601H9 T1601 IC1601H1 T1601H1 T1601H8 R1626 C1608H1 IC1601 C1608H2 IC1601H2 BLACK WHITE TPGND K1600 LF160A VA1600...
  • Page 31 POWER BOARD FOIL SIDE SCR1603 SCR1604 R1655 R1656 Q1605 R1629 R1653 Q1611 R1642 Q1609 Q1612 R1616 D1613H1 D1613H2 D1610 D1613 Q1601 D1607 D1603 T1601H16 T1601H9 T1601 T1601H8 T1601H1 R1626 R1624H1 R1623H1 R1607 IC1601H2 TPGND K1600 VA1600 D1604 SCR1602 — 31 —...

  • Page 32: Block Diagram Power Lines

    BLOCK DIAGRAM POWER LINES — 32 —...

  • Page 33: Block Diagram Signal Lines

    BLOCK DIAGRAM SIGNAL LINES — 33 —...
  • Page 34 BLOCK DIAGRAM POWER BOARD — 34 —...

  • Page 35: Ic Block Diagrams

    IC BLOCK DIAGRAMS IP Converter/Screen Controller/LVDS Transmitter (IC7201) Line Doubler (for 20V) 656/601 Sharpness H-Scaling 656/601 V-Scaling Decoder (Y Only) (4/5) Input Line Tripler (for 15V) Tint Matrix Contrast Brightness γ LVDS Test LVDS -Correct Output Pattern Insert Transmitter Black-Expander I2C-Bus SCL SDA Digital Decoder (IC2001)

  • Page 36: Block Diagrams

    IC BLOCK DIAGRAMS (CONT.) Audio Processor (IC3001) TONE TONE SR FIL OUTa LINEa MONa IN1a IN2a 2 VOL 1 TONE VOL 2 IN3a 3 IN4a 4 NJRC IICBUS Sorround Interface "eala" & Simulated Stereo IN1b IN2b 29 VOL 1 VOL 2 TONE IN3b 28 IN4b 27...

  • Page 37: Trouble Shooting Flow Charts

    TROUBLE SHOOTING FLOW CHARTS NO POWER fuse (F1600) Check: Varistor (VA1600), Diode Bridge (D1604), open? IC (IC1601), Diode (D1612), Thermistor (R1600) the voltage Check: to "5V_STBY" line IC (IC1601,IC1600), Diode (D1600,D1601, supplied? D1605,D1606,D1610), Transistor (Q1607) All 0V (except '5V_STBY' line) the voltage to all lines Check: arround supplied?
  • Page 38 TROUBLE SHOOTING FLOW CHARTS (CONT.) NO VIDEO Check: RF(TV) only All Modes? Line: A101 17pin - IC1201 5pin Parts: Around A101 (TU_IF), Q101 Check: AV1 only Line: IC1201 1pin (Composite Video: CV) Check: IC1201 3pin (S-Input: Y) AV2 only Line: IC2001 90pin (S-Input: C) IC1202 1pin (CV) Check:...
  • Page 39 NO AUDIO All Modes ? Is there Check: signal at speaker Speaker (SP901, SP902) terminal ? Check: Is there signal at IC001 2pin (L) Line: IC001 1pin - Q002(C) - IC801 (CPU) 14pin (Mute) Parts: Around IC001 (Audio AMP.), Q002 or 4pin (R) ? Check: Parts: Around IC3001 (Audio SW, Control, Surround)

  • Page 40: Control Port Functions

    CONTROL PORT FUNCTIONS System Control (CPU : IC801) Pin Name Function I/O Description P-FAIL(DIGITAL) Power Failure for Digital Circuit, Failure : Low POWER-2 Power port for LCD panel, Panel On : Low IIC bus control for factory, Detect STATUS : Low STATUS IIC bus control for factory, Connect to factory line : Low INT0...
  • Page 41 I/O Expander (IC899) Pin Name Function I/O Description SERIAL OUTPUT – BUS SCL IIC Bus port, SCL : Clock BUS SDA IIC Bus port, SDA : Data – NOT USED – NOT USED – NOT USED – NOT USED AV SWITCH 1 Connect to IC1001 2pin AV SWITCH 2 Connect to IC1001 4pin...

  • Page 42: Pin Layouts

    SCHEMATIC DIAGRAMS NOTES ON SCHEMATIC DIAGRAMS 1. All resistance values in ohms K=1,000 M=1,000,000. 2. 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 . 3.

  • Page 43: Capacitor And Resistor Code Chart

    CAPACITOR AND RESISTOR CODE CHART CAPACITOR (Example) 500 C K 1500 B D ......±0.5pF T ......+50% – J ......±5% K ......±10% M ......±20% N ......±30% Characteristics P ......+100% – Value code Z ......+80% –...
  • Page 44 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) March / 2005 / 2000 SMC Printed in U.S.A. — 44 —...

  • Page 45: Lcd

    MODEL DP23625 Chassis No. 23625-00 SCHEMATIC DIAGRAMS <CH-> <CH+> <POWER> <VOL-> <VOL+> Control SW1906 SCREW SW1904 EL901 S10B S10B SW1901 SW1902 SW1903 LCD Module 3530G 3530G S10B S10B S10B SC191 SC192 SC193 SC194 1AV4T40B60001 R1906 3530G 3530G 3530G 1/10GJ R1902...
  • Page 46 MODEL DP23625 Chassis No. 23625-00 SCHEMATIC DIAGRAMS K8091 B4J11B0230N IC1201 Video (V/Y) SW J10EG055G R1003 R1213 R1203 NJM2535MP 1/10GZ0C R1201 R1208 1/10GZ0C 1/10GJ1MC TV_CVBS 1/10GJ1MC 1/10GZ0C R1002 R1001 SC1001 R2005 AV_SW2 VIN3 R1209 1/10GJ75C 1/10GZ0C Z30B0220G 1/10GZ0C K1001 9V_ANALOG VIN2...
  • Page 47 MODEL DP23625 Chassis No. 23625-00 SCHEMATIC DIAGRAMS To Panel J7599 1/10GZ0C <LCD_23V:5VOLTS> PANEL_POW J7598 1/10GZ0C J7551 1/10GZ0C 1/10GZ0C J7552 PANEL_POW DC/DC 6.3KK4.7LZB <LCD 23V:5V> C7559 C7554 C7557 25KZ0.1LZF Converter L7261 25KZ 0.1LZF 1.5V_SCR C7273 6.3KK4.7LZB L7268 J7553 C7265 C7221 IC7232 3.3V_SCR...

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