Sharp LC-24LE240E Service Manual
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Sharp LC-24LE240E Service Manual

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DVB-T / DVB-C (HDTV), PAL
TABLE OF CONTENTS .......................................................................................................................
ELECTRICAL SPECIFICATIONS .......................................................................................................
IMPORTANT SERVICE SAFETY PRECAUTIONS ................................................................................
OPERATION MANUAL ...........................................................................................................................
DIMENSIONS ..................................................................................................................................... 13
INTRODUCTION .................................................................................................................................. 14
CIRCUIT DESCRIPTIONS .................................................................................................................. 17
SERVICE MENU SETTINGS ........................................................................................................... 49
SOFTWARE UPDATE ............................................................................................................................ 53
TROUBLESHOOTING ..................................................................................................................... 54
OVERAL WIRING DIAGRAM ........................................................................................................... 63
SCHEMATIC DIAGRAMS ................................................................................................................ 64
PRINTED WIRING BOARD ....................................................................................................................... 74
REPLACEMENT PARTS LISTING ............................................................................................... 75
CABINET AND MECHANICAL PARTS ...................................................................... 81
SHARP CORPORATION
SERVICE MANUAL
LED LCD
/ SECAM
B/G, I
B/G, D/K, L/L'
MODEL
LC-24LE240E
LC-24LE240EK
LC-24LE240EV
In the interests of user safety (required by safety
regulations in some countries) the set should be re-
stored to its original condition and only parts identical
to those specifi ed should be used.
CONTENTS
1
SE00LC24LE240E
COLOUR TELEVISION
SYSTEM COLOUR TELEVISION
17MB62 CHASSIS
This document has been published to
be used for after sales service only.
The contents are subject to change without notice.
LC-24LE240
Issued: 4th May 2012
2
5
7
9
Table of Contents
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Summary of Contents for Sharp LC-24LE240E

  • Page 1 SYSTEM COLOUR TELEVISION B/G, I B/G, D/K, L/L’ 17MB62 CHASSIS MODEL LC-24LE240E LC-24LE240EK LC-24LE240EV In the interests of user safety (required by safety regulations in some countries) the set should be re- stored to its original condition and only parts identical to those specifi...

  • Page 2: Table Of Contents

    LC-24LE240 TABLE OF CONTENTS ELECTRICAL SPECIFICATIONS ................5 IMPORTANT SERVICE SAFETY PRECAUTIONS............7 OPERATION MANUAL....................9 DIMENSIONS......................13 INTRODUCTION......................14 General Block Diagram ................15 MB62 Placement of Blocks ..............16 CIRCUIT DESCRIPTIONS ..................17 Tuner ...................17 Audio Amplifi er Stage with AZAD2102(U163, U164).......19 Audio Amplifi er Stage with TPA3113(U168) ...........22 Power Stage ....................24 Microcontroller-MSTAR(U5) ................29 Interface...

  • Page 3: Electrical Specifications

    Cautions regarding use in high and low temperature environments • As a part of our policy of continuous im- provement, SHARP reserves the right to • When the unit is used in a low temperature space (e.g. room, offi ce), the make design and specifi cation changes picture may leave trails or appear slightly delayed.

  • Page 4: Important Service Safety Precaution

    LC-24LE240 IMPORTANT SERVICE SAFETY PRECAUTION Service work should be performed only by qualifi ed service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow: WARNING 1. For continued safety, no modifi cation of any circuit should be attempted. 2.
  • Page 5 LC-24LE240 PRECAUTIONS FOR USING LEAD-FREE SOLDER 1 Using lead-free wire solder When fi xing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire solder may cause damage or accident due to cracks. As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40°C, we recommend you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station or service branch in your area.
  • Page 6 LC-24LE240 End of life disposal...

  • Page 7: Operation Manual

    LC-24LE240 OPERATION MANUAL LCD TV and Operating Buttons FRONT and REAR VIEW Control buttons VIEW Control Buttons Up direction Down direction Programme/Volume / AV / Standby-On selection switch Note:You can move the switch, upward or downward to change the volume. If you want to change channels, press the middle of the switch once (Position 3) and then move upward or downward.
  • Page 8 LC-24LE240 Operation Manual (Continued) LCD TV and Operating Buttons FRONT and REAR VIEW Control buttons VIEW Control Buttons Up direction Down direction Programme/Volume / AV / Standby-On selection switch Note:You can move the switch, upward or downward to change the volume. If you want to change channels, press the middle of the switch once (Position 3) and then move upward or downward.

  • Page 9: Operation Manual

    LC-24LE240 Operation Manual (Continued) Viewing the Connections - Side Connectors CI Slot is used for inserting a CI card. A CI card allows you to view all the channels that you subscribe to. For more information, see “Conditional Access” section. USB Inputs.

  • Page 10: Using Usb Inputs

    LC-24LE240 Operation Manual (Continued) Using USB Inputs SIDE VIEW USB MEMORY USB Connection • You can connect a USB hard disk drive or USB memory stick to your TV by using the USB inputs of the TV. This feature allows you to play fi les stored in a USB drive or record programmes.

  • Page 11: Connecting To A Dvd Player

    LC-24LE240 Operation Manual (Continued) • Recordings of HD programmes can occupy bigger Connecting to a DVD Player size on the USB disk depending on the broadcast’s via Component Sockets resolution. For this reason it is recommended to use USB hard disk drives for recording HD (YPbPr) or Scart Cable programmes.

  • Page 12: Connecting The Lcd Tv To A Pc

    LC-24LE240 Operation Manual (Continued) Connecting the LCD TV to a PC Remote Control Handset For displaying your computer’s screen image on your Inserting Batteries LCD TV, you can connect your computer to the TV set. • Remove the battery cover located on the back of Power off both computer and display before making the handset by gently pulling backwards from the any connections.

  • Page 13: Dimensions

    LC-24LE240 DIMENSIONS...

  • Page 14: Introduction

    LC-24LE240 INTRODUCTION...

  • Page 15: General Block Diagram

    LC-24LE240 1. General Block Diagram...

  • Page 16: Mb62 Placement Of Blocks

    LC-24LE240 2. MB62 Placement of Blocks...

  • Page 17: Circuit Descriptions

    LC-24LE240 CIRCUIT DESCRIPTIONS 1. Tuner (TU3) 1.1 General description of Sony RE216:...
  • Page 18 LC-24LE240...

  • Page 19: Audio Amplifi Er Stage With Azad2102(U163, U164)

    LC-24LE240 2. Audio Amplifi er Stage with AZAD2102(U163, U164) 2.1. General description 2.2. Features...
  • Page 20 LC-24LE240 2.3. Absolute ratings 2.3.1. Electrical characteristics...
  • Page 21 LC-24LE240 2.3.2. Operating Specifi cations 2.3. Pining...

  • Page 22: Audio Amplifi Er Stage With Tpa3113(U168)

    LC-24LE240 3. Audio Amplifi er Stage with TPA3113(U168) 3.1. General description 3.2. Features 3.3. Absolute ratings 3.3.1. Electrical characteristics...
  • Page 23 LC-24LE240 3.3.2. Operating Specifi cations 3.4. Pinning...

  • Page 24: Power Stage

    LC-24LE240 4. Power Stage JK9 is used for the adapter option and also CN705 inverter socket socket or DB32 chassis with CN706 is used to supply backlight. The power supplies generate 18V, 12V, 5V, 3.3V and 12V, 5V, stand by mode DC voltages. Power stage which is on-chassis generates 5V, 3V3 stand by voltage and 12V, 8V, 5V, 3V3, 2.5V, 1.8V and 1.2V supplies for other different parts of chassis.
  • Page 25 LC-24LE240 The blocks on power block diagram is using dependent to main supply. For PW26 and PW27 just common blocks are enough for proper operation. For IPS16, IPS17, IPS60 below blocks must work properly.
  • Page 26 LC-24LE240 For adapter case also below blocks are necessary. Short CCT Protection Circuit Short circuit protection is necessary for protecting chassis and main IC against damages when any Vcc supply shorts to ground. Protect pin should be logic high while normal operation. When there is a short circuit protect pin should be logic low.
  • Page 27 LC-24LE240 4.1. Power Management...
  • Page 28 LC-24LE240...

  • Page 29: Microcontroller-Mstar(U5)

    LC-24LE240 5. Microcontroller- MSTAR(U5) 5.1. Description...
  • Page 30 LC-24LE240...
  • Page 31 LC-24LE240...
  • Page 32 LC-24LE240...
  • Page 33 LC-24LE240 5.2. MSTAR Block Diagram 5.3 Reset Circuit Reset circuit using for initializing main Mstar IC. Reset condition is high and normal working condition is low for RESET pin.

  • Page 34: Ci Interface

    LC-24LE240 6. CI Interface 7. USB Interface Main Concept IC has integrated 2 USB 2.0 interface. One of them is used for Ethernet function, the other one is used for USB connectivity for last user. Last user can play video, picture and audio fi les. Also digital chan- nels can be recorded to external storage device by this interface.

  • Page 35: Ddr2 Sdram K4T1G164Qf (U155)

    LC-24LE240 8. DDR2 SDRAM K4T1G164QF (U155) 8.1. General Description 8.2. Features...
  • Page 36 LC-24LE240 8.3 Pinning...

  • Page 37: Scaler And Lvds Sockets

    LC-24LE240 9. Scaler and LVDS Sockets 9.1. LVDS sockets Block Diagram 9.2. Panel Supply Switch Circuit This switch is used to open and close panel supply of TCON. It is controlled by port of main ucontroller. Also with this circuit panel sequency could be adjusted correctly. 3 panel supplies are connected to this circuit.

  • Page 38: Spi Flash Memory-Mx25L1005 (U158)

    LC-24LE240 F302 3V3_VCC F289 PANEL SUPPLY SWITCH F288 5V_VCC PANEL_VCC F290 12V_VCC R1725 3V3 or 5V or 12V STBY_ON/OFF_ R1693 Q190 BC848B C1042 R1685 100nF Q194 PANEL_VCC_ON/OFF BC848B 10. SPI Flash Memory-MX25L1005 (U158) 10.1. General Description...
  • Page 39 LC-24LE240 10.2. Features 10.3. Absolute Maximum Ratings 10.4. Pinning...

  • Page 40: Nand Flash Memory-Nand512Xxa2C (U162)

    LC-24LE240 11. NAND Flash Memory-NAND512XXA2C (U162) 11.1. General Description 11.2. Features...
  • Page 41 LC-24LE240 11.3. Pinning...

  • Page 42: Mp2012 (U176)

    LC-24LE240 12. MP2012 (U176) 12.1. General Description 12.2. Features 12.3. Pinning...

  • Page 43: Rta8283A (U23,U173)

    LC-24LE240 13. RTA8283A (U23, U173)) 13.1. General Description 13.2. Features 13.3. Pinning...

  • Page 44: Mp1583 (U174)

    LC-24LE240 14. MP1583 (U174) 14.1. General Description 14.2. Features 14.3. Pinning...

  • Page 45: Lm1117(U175, U180, U181)

    LC-24LE240 15. LM1117 (U175, U180, U181) 15.1. General Description 15.2. Features 15.3. Pinning...

  • Page 46: Fdc642

    LC-24LE240 16. FDC642 16.1. General Description 16.1. General Description This P-Channel 2.5V specified MOSFET is produced using Fairchild’s advanced PowerTrench® process that has been especially tailored to minimize on-state resistance and yet maintain low gate charge for superior switching performance. These devices have been designed to offer exceptional power dissipation in a very small footprint for applications where the larger packages are impractical.

  • Page 47: Fdc604P

    LC-24LE240 17. FDC604P 17.1. General Description This P-Channel 1.8V specified MOSFET uses Fairchild’s low voltage PowerTrench process. It has been optimized for battery power management applications. 17.2. Features 17.2. Features –5.5 A, – –4.5 V VGS = –2.5 V –1.8 V Fast switching speed.
  • Page 48 LC-24LE240 18.2. HDMI (CN707, CN708) 18.3. VGA (CN711)

  • Page 49: Service Menu Settings

    LC-24LE240 SERVICE MENU SETTINGS 1. SERVICE MENU SETTINGS In order to reach service menu, fi rst press “ MENU ”, then press the remote control code two times, which is “ 4725 “. In fi rst screen following item can be seen: 1.
  • Page 50 LC-24LE240 1.2. Audio Settings 1.3. Options Options-1...
  • Page 51 LC-24LE240 Options-2 1.4. Tuning Settings...
  • Page 52 LC-24LE240 1.5. Source Settings 1.6. USB Operations USB operations can not be used directly. It can be used for updating panel tool, hw confi guration, etc.

  • Page 53: Software Update

    LC-24LE240 SOFTWARE UPDATE In MB62 project there is only one software. From following steps software update procedure can be seen: 1. MB62 en. bin, mboot.bin and usb_auto_update_mb62.txt documents should copy directly inside of fl ash memory ( not in a folder). 2.

  • Page 54: Troubleshooting

    LC-24LE240 TROUBLESHOOTING 1. No Backlight Problem Possible causes: Backlight pin, dimming pin, backlight supply, stby on/off pin.
  • Page 55 LC-24LE240 2. CI Module Problem Problem: CI is not working when CI module inserted. Possible causes: Supply, supply control pin, detect pins, mechanical positions of pins CI supply should be 5V when CI module inserted. If it not 5V please check CI_POWER_CTRL, this pin should be low.
  • Page 56 LC-24LE240 Please check mechanical positions of CI module. Detect ports should be low. If it is not low please check CI connector pins, CI module pins and 3V3_VCC on MB62.
  • Page 57 LC-24LE240 3. Led Blinking Problem...
  • Page 58 LC-24LE240 4. IR Problem Problem: LED or IR is not working. Check LED card supply on MB62 chassis.
  • Page 59 LC-24LE240 5. Keypad Touchpad Problems 21.5. Keypad Touchpad Problems Problem: Keypad or Touchpad is not working Check keypad supply and KEYBOARD pin on MB62. 6. USB Problems Problem: USB is not working or no USB detection. Check USB Supply. It should be nearly 5V.
  • Page 60 LC-24LE240 7. No Sound Problem Problem: No audio at main TV speaker outputs. Check supply voltages of VDD_AUDIO, 5V_VCC and 3V3_VCC with a voltage-meter. There may be a problem in headphone connector or headphone detect circuit (when headphone is connected, speakers are automatically muted).
  • Page 61 LC-24LE240 9. Standby On/Off Problem Problem: Device cannot boot, TV hangs in standby mode There may be a problem about power supply. Check 12V_VCC, 5V_VCC and 3V3_VCC with a voltage-meter. Also there may be a problem about SW. Try to update TV with latest SW. Additionally it is good to check SW printouts via hyper-terminal (or Teraterm).
  • Page 62 LC-24LE240 Notes:...

  • Page 63: Overall Wiring Diagrams

    LC-24LE240 OVERALL WIRING DIAGRAM DC CABLE BOARD TO BOARD SOCKETS LVDS CABLE ROCKER SWITCH SOCKET POWER PLUG SPEAKER CABLE LED/IR CABLE...

  • Page 64: Schematics Diagrams

    LC-24LE240 SCHEMATIC DIAGRAMS Tuner & T2 Demodulator Diagram ACTIVE_ANT_SUPPLY NUTUNE/SEMCO/LG C965 100nF C904 TP48 100nF 22uF ANT-DC ANT-DC ACTIVE_ANT_SUPPLY R1595 +3V3 12V_VCC R1597 3V3_TUNER 3V3_TUNER TUN_SCL R1963 IF_AGC_MST 100R IF_AGC_TUNER TUN_SCL_MST F304 R1581 TUN_SCL C912 C910 ACTIVE_ANT_SUPPLY 100nF 100nF FDN336P TUN_SDA_MST R1590 TUN_SDA...
  • Page 65 LC-24LE240 Peripherals Diagram PC INPUT SCART 5V_VCC SCART VIDEO OUTPUT AMPLIFIER C663 100nF R124 F179 12V_VCC 220R SC_CVBS_IN R1949 SC_CVBS_OUT 100R VGA_VSNC 220pF C860 C836 R1243 Q146 100R VGA_HSNC BC858B R1233 47pF C378 220R Q119 R1249 SCART_CVBS_OUT BC848B SC_FB 10uF R1587 R620 SC_CVBS_OUT...
  • Page 66 LC-24LE240 RAM & NAND & CI Diagram NAND FLASH CI INTERFACE MSD9WB9PT-2 DDR18V F187 R1632 CN141 FLH_3.3V 3V3_VCC 3V3_VCC A_MADR0 A_MADR[0] A_MADR1 NAND_WPz PCM_D3 PCM_CD1_N A_MADR[1] C868 NC29 C657 C656 A_MADR2 TS_MDO3 PCM_D4 A_MADR[2] 22uF 100nF 100nF A_MADR3 TS_MDO4 PCM_D5 A_MADR[3] NC28 A_MADR4...
  • Page 67 LC-24LE240 Audio IO & HDMI Inputs Diagram HDMI2 CN708 AUDIO OUTPUTs R1877 HDMI_0_RX2P R1869 R1900 HDMI_0_RX2N MAIN_L 100R DSP_MAIN_L C1197 HDMI_0_RX1P SCART_AUDIO_IN_L C1198 10uF AUL0 RXA0N HDMI_1_RX0N R1868 R1887 SCART_AUDIO_IN_R 10uF AUR0 RXA0P HDMI_1_RX0P HDMI_0_RX1N SAV_AUDIO_IN_L 10uF 10V AUL1 RXA1N HDMI_1_RX1N HDMI_0_RX0P SAV_AUDIO_IN_R...
  • Page 68 LC-24LE240 Audio AMP & HP AMP Diagram AUDIO AMP for 16" to 24" POP NOISE CIRCUIT 12V_VCC U163 PT2333 5V_VCC Q160 MAIN_L BC848B 10uF C612 R623 L_AUDIO_P_OUT 220nF C1032 C665 L_AUDIO_N_OUT 100nF Q195 BC858B AMP_EN BC848B VDD_AUDIO C1058 Q186 100nF R1702 R1684 BC848B...
  • Page 69 LC-24LE240 GPIOS & USB & LVDS_OUT Diagram R1835 R1833 15.6" LVDS OPTION TX_B_0_N PCM_CD1_N TP34 AA19 TX_B_0_P TX_B_0_P R1615 PWM0 LVB0P SERIAL FLASH AA20 3V3_VCC PWM1 LVB0M TX_B_0_N TP33 AA18 TX_B_1_P TX_B_1_N BACKLIGHT_DIM PWM2 LVB1P 3V3_STBY D165 3V3_STBY TX_B_1_N TX_A_0_N LVB1M 3V3_STBY PANEL_VCC...
  • Page 70 LC-24LE240 POWER_1 & LNBP Diagram F274 F277 2V5_VCC AVDD_2V5_PGA 1V2_VCC VDDC_1V2 C1007 C1081 C997 C1005 C1070 100nF 10uF 100nF 100nF 100nF AVSS_PGA F271 3V3_STBY AVDD_3V3 C1030 C1024 C1025 C1022 10uF 100nF 100nF 100nF 60R 402 ferrite secilecek F305 2V5_VCC AVDD2V5_ADC F272 1V8_VCC AVDD_DDR...
  • Page 71 LC-24LE240 POWER_2 Diagram ADAPTER SOCKET W_ADAPTER 12V_STBY 7A/32VDC POWER BLOCK DIAGRAM W/ADAPTOR 12V_INV 7A/32VDC DC/DC1 12V_STBY 12V_VCC DC-DC4 1V2_VCC C1038 DC-DC1 TP36 100nF 5V_VCC U174 12V_VCC 5V_STBY C1112 MP1583 5V_STBY 10nF 1 BS F287 R1972 12V_STBY 12V_STBY R1709 5V_VCC COMP C1091 C1092 C1037...
  • Page 72 LC-24LE240 POWER SUPPLY Diagram...
  • Page 73 LC-24LE240 Led Converter Diagram...

  • Page 74: Printed Wiring Board

    LC-24LE240 PRINTED WIRING BOARD Main Board...

  • Page 75: Parts Listing

    30048473 DIODE DUALSMD BAW56 4A/75V/4A SOT23ROHS D189 30038507 DIODE SMD 1N4148 0.15A/100V SOD123 RoHS 23001050 MD.ASY.17CON08 23.6''CMO LE4 (Converter Board) LC-24LE240E/EK/EV MB62 D191 30038507 DIODE SMD 1N4148 0.15A/100V SOD123 RoHS MAIN Unit 30070436 DIODE SMD ARRAY ESD CDA4C16GTH 0508 RoHS...
  • Page 76 LC-24LE240 PRICE PRICE REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION CODE CODE F271 30019087 FERRIT SMD 60R/100MHz 0.025 M 3A 0805Roh C1096 30047296 CAP SMD 22UF 6.3V M X5R (0805) ROHS C1097 30047296 CAP SMD 22UF 6.3V M X5R (0805) ROHS F272 30019087 FERRIT SMD 60R/100MHz 0.025 M 3A 0805Roh...
  • Page 77 LC-24LE240 PRICE PRICE REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION CODE CODE C860 30022240 CAP SMD 47PF 50V J COG (0402) ROHS C612 30051167 CAP SMD 220NF 10V X7R K (0402) ROHS C615 30065929 CAP ELCH 220UF 10V M 150mA 8x6.5 ROHS C861 30030099 CAP SMD 1NF 50V K X7R (0402) ROHS...
  • Page 78 LC-24LE240 PRICE PRICE REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION CODE CODE R1513 30022085 RES SMD 1/16W 33R J 0402 RoHS R1249 30021960 RES SMD 1/16W 47R J 0402 ROHS R1514 30022085 RES SMD 1/16W 33R J 0402 RoHS R1265 30021996 RES SMD 1/16W 10K J 0402 ROHS...
  • Page 79 LC-24LE240 PRICE PRICE REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION CODE CODE R1907 30021991 RES SMD 1/16W 100R J 0402 ROHS R1699 30021958 RES SMD 1/16W 47K J 0402 RoHS R1908 30022056 RES SMD 1/16W 220R J 0402 RoHS R1701 30021989 RES SMD 1/16W 100K J 0402 ROHS...
  • Page 80 LC-24LE240 PRICE REF No. PARTS DESCRIPTION CODE 30021987 RES SMD 1/16W 4.7K J 0402 RoHS 30021991 RES SMD 1/16W 100R J 0402 ROHS R613 30021987 RES SMD 1/16W 4.7K J 0402 RoHS R614 30021987 RES SMD 1/16W 4.7K J 0402 RoHS R620 30021991 RES SMD 1/16W 100R J 0402 ROHS...

  • Page 81: Cabinet And Mechanical Parts

    LC-24LE240 CABINET AND MECHANICAL PARTS...
  • Page 82 20569417 ROC.SW.AS.(MB60_22942_SHARP) (Rocker Switch & Cable) 20596550 FOOT ASSY 19942(GL-BLK_SHARP) (Stand Foot) 20569443 SPK.AS.22942-LED(R/L)(MB60-6P)(BL(SHARP) (Speakers) 40048939 BRACKET IO MB60S-M4 VER5(I(ABSV0) (SHARP) (Side Bracket) 20571033 CN.A.FFC 30P/300 P=1MM LVDS(24942LE MB60) (LVDS FFC cable) 23038834 CN.A.FFC 12P/500(24"Led Backlight) (Panel converter cable) ACCESSORIES PARTS LISTING...
  • Page 83 LC-24LE240 NOTES:...

  • Page 84: Sharp Corporation

    LC-24LE240 COPYRIGHT © 2012 BY SHARP CORPORATION ALL RIGHTS RESERVED No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

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