Advertisement

Quick Links

23"LCD TV
Service
Service
Service
Description
Table of Contents............................................................1
Important Safety Notice...................................................2
Revision List.........................................................3
1. General Specification..................................................4
2. Operating Instructions............................................5
2.1 The Use of Remote Control...................................5
2.2 To Use the Menus................................................6
2.3 How to Connect................................................12
2.4 Front Panel Control Knobs..................................14
3. Input/Output Specification.......................................16
4. Mechanical Instructions.........................................18
5. Repair Flow Chart ..............................................21
6. PCB Layout .......................................................28
6.1 Main Board.......................................................28
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

TABLE OF CONTENTS

SAFETY NOTICE
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
Page
Description
6.2 Power Board..................................................30
6.3 LED Board.....................................................33
6.4 Key Board.....................................................33
6.5 IR Board.......................................................33
7. Adjustment.......................................................34
8. Block Diagram........................................................35
9. Schematic Diagram..........................................37
9.1 Main Board....................................................37
9.2 Power Board..................................................46
9.3 LED Board.....................................................48
9.4 Key Board.....................................................49
9.5 IR Board........................................................50
10. Exploded View..............................................51
11. BOM List......................................................53
1
AOC LE23H037
Horizontal Frequency
31.5~68 KHz
Page

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the LE23H037 and is the answer not in the manual?

Questions and answers

Summary of Contents for AOC LE23H037

  • Page 1: Table Of Contents

    23″LCD TV AOC LE23H037 Service Service Service Horizontal Frequency 31.5~68 KHz TABLE OF CONTENTS Description Page Description Page Table of Contents..……........…..1 6.2 Power Board………………..…….…….………..30 Important Safety Notice........……..2 6.3 LED Board……...…………..…….…….………..33 Revision List…………………………………………………3 6.4 Key Board………………………..……..………..33 1. General Specification......……...…..4 6.5 IR Board………………………….……..………..33 2.
  • Page 2: Important Safety Notice

    Important Safety Notice Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service procedures recommended by AOC and described in this service manual are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose. The special tools should be used when and as recommended.
  • Page 3: Revision List

    Revision List Version Release Date Revision Instructions TPV Model Aug.24,2010 Initial Release E23ASANSWEB13N...
  • Page 4: General Specification

    1. General Specification Modelo LE23H037 598mm (23”) Tamanho da Tela 1920 x 1080 Resolução Padrão NTSC Sistema da TV PAL-M & PAL-N VHF: 2 até 13 Cobertura de Canais UHF: 14 até 69 Cable TV: 1 até 125 Alto-falantes 3W x 2 Impedância da Antena...
  • Page 5: Operating Instructions

    2. Operating Instructions 2.1 The Use of Remote Control...
  • Page 6: To Use The Menus

    2.2 To Use the Menus...
  • Page 12: How To Connect

    2.3 How to Connect...
  • Page 14: Front Panel Control Knobs

    2.4 Front Panel Control Knobs...
  • Page 16: Input/Output Specification

    3. Input/Output Specification 3.1 RGB Signal Input 15 - Pin Color Display Signal Cable Pin No. Description Pin No. Description Red Video No Pin Green Video Sync Ground Blue Video Serial Data for DDC Ground H-Sync. Red Video Ground V-Sync. Green Video Ground Serial Clock for DDC Blue Video Ground...
  • Page 17 3.3 Compatible Mode Table Sync Polarity Presence Screen Mode Vertical Horizontal Dots x Lines Frequency Frequency Normal FULL Horizontal Vertical Horizontal Vertical (Hz) (kHz) (4:3) (16:9) 720x400 70.1 31.5 640x480 59.9 31.5 800x600 60.0 37.9 1024x768 60.0 48.363 1360x768 59.79 47.72 1440x900 55.93...
  • Page 18: Mechanical Instructions

    4. Mechanical Instructions 1. Remove the screws to remove the stand, base and rear cover. 2. Remove the screws to remove AC cover and bracket.
  • Page 19 3. Remove the screws to remove main board and power board. 4. Remove the screws to remove key board, IR board, speakers and separate bezel and mainframe.
  • Page 20 5. Remove the screws to separate mainframe and panel. 6. The panel.
  • Page 21: Repair Flow Chart

    5. Repair Flow Chart 1. No power No power (LED “Off”) Check the AC input and Power “On” the power is “ON”? Power board Replace the power board output=5.2V? Check the IR board and LED Replace the IR board Replace the main board...
  • Page 22 2. Can’t start Can’t start(LED red) Replace the power board Power board output=16V? Replace the key board Check the power key is under control? Replace the IR board Check the IR receiver is normal? Replace the main board Replace the Power board...
  • Page 23 3. Abnormal Display Abnormal Display Reset the source Check the source Enter factory mode to do “EEPROM initial”&“Reset” Replace the main board Check the main board Check the LVDS cable Replace the LVDS cable Check the panel Replace the panel...
  • Page 24 4. No display No display (LED white) Check TV is under control and power Replace the main board on/off by remote control and power key? Check the backlight is “On”? Check the LVDS cable Check the B/L signal is available? Reinsert or replace the LVDS cable Replace main board...
  • Page 25 5. Sound problem No sound or sound abnormal Check the audio source connection and the TV system are correct? Reinsert the audio cable or change the TV system Check the TV is muted, adjust the volume or enter the menu to reset? Enter factory mode to do “Reset”...
  • Page 26 6. Remote control malfunction Remote Control malfunction Check the remote control battery is Replace the battery not properly placed or no power? Use the other remote controls Replace the remote control Whether the IR board is Replace the IR board abnormal? Replace the main board...
  • Page 27 7. OSD is unstable or can’t work normally OSD is unstable or can’t work normally Reconnect the key board Key board connected properly? Replace the button function Buttons are OK? Replace the key board Key board is OK? Enter factory mode to do “Reset” Replace the main board...
  • Page 28: Pcb Layout

    6. PCB Layout 6.1 Main Board 715G3806M01000004L...
  • Page 30: Power Board

    6.2 Power Board 715G4313P01000003S...
  • Page 33: Led Board

    6.3 LED Board 715G4087T01000004W 6.4 Key Board 715G4053K01000004F 6.5 IR Board 715G4086R01000004S...
  • Page 34: Adjustment

    7. Adjustment It’s no need to adjust the white balance for this model. 1. Enter into the factory mode: Turn on the TV, press MENU key with remote control, then press number key 1 9. It will achieve the factory mode. 2.
  • Page 35: Block Diagram

    8. Block Diagram HDMI EDID(U301) SDA,SCL Himax M2D U405 AV Line Out CN301 CVBS_O SCART CVBS Out RX0,RX1,RX2,RXCLK HDMI (Option) HDMI_RXA0,A1,A2,CLK (CN106) CN104 Y,Pb,Pr AINA2,AINB2,AINC2,SOG2 YPbPr CVBS AINA5 CN107 AV&S-VIDEO AINB4,AINC4 R,B,G,H,V AINA1,AINB1,AINC1 CN102 HSYNC,VSYNC RS232 CN101 Himax M2D HDMI/ADC CVBS AINA3 SC_R,SC_G,SC_B...
  • Page 36 5VSB VCC3 1084-33 1077mA 5VSB U701 VCC3AD VCC3AD VCC3IO / V33LV VCC3 VCC3IO / V33LV MX25L4005AM2C HX6201 U402 U405 822mA AVDD18 / VCCLV AVDD18 / VCCLV 1084_1.8 VCC18_CORE HX6202A U708 U405 281mA V33ADC / VCCADC / VDDA33 V33HDMI / VCCADC / VDDA33 5VSB VCC5 1084_33...
  • Page 37: Schematic Diagram

    9. Schematic Diagram 9.1 Main Board 715G3806M01000004L VCC3 5VSB BL_ON1 VCC18_CORE U701 U708 V_IPWM V12_ADP G1084-33TU3Uf G1084-18TU3Uf VOUT VOUT V12_ADP C714 C715 C741 C724 C742 C743 100nF 50V 220uF/16V 100nF 50V 220uF/16V 100nF 50V 470uF/16V C720 100nF 50V C702 PWR_ON 5VSB 10uF/50V 5VSB...
  • Page 38 RXACLKN_M2 RXACLKN_M2 9 OUT1 RXACLKP_M2 RXACLKP_M2 9 OUT2 CN301 HDMI RXA0N_M2 RXA0N_M2 OUT3 RXA0P_M2 RXA0P_M2 OUT4 RXA2P_M2 U302 D2 Shield RXA2N_M2 RXA1P_M2 D1 Shield RXA1N_M2 RXA0P_M2 U303 D0 Shield RXA0N_M2 RXA1N_M2 RXA1N_M2 OUT1 RXACLKP_M2 RXA1P_M2 RXA1P_M2 OUT2 CK Shield RXACLKN_M2 RXA2N_M2 RXA2N_M2 OUT3...
  • Page 39 5V for Tuner TGND TU100 M40CTP-6N-E U159 G965-25ADJPIUF +5VT +5VT VCC5 +5VT TGND FB151 2.2 OHM 1/10W R739 220R/2000mA C323 C308 C309 C219 C218 330uF 10V 47PF/16V 56pF 50V 100nF 50V C324 100uF 56pF 50V TGND R317 12K1/10W R320 100 OHM 1/10W TGND R173 100 OHM 1/10W...
  • Page 40 UART_RX R/G/B : 75 Ohm Trace R151 R156 C155 1N 50V SOGAIN 100OHM1/16W 100OHM1/16W CN108 C152 R160 R164 GAIN 60 OHM 100OHM1/16W RED_GND 60 OHM 47N 16V VGASDA_IN R161 C147 C146 GRN_GND 22P 50V NC 180pF 50V VGA_HIN BLU_GND GRN_GND 75 OHM 1/10W R148 UART_TX...
  • Page 41 L101 L105 R254 CVBS1_IN 18OHM1/16W R247 C194 CVBS 100OHM1/16W 100N 16V 2.2uH 2.2uH ZD101 C189 C217 R248 220P 50V 220P 50V 56R 1/16W 5% CVBS_GND L106 S-video CN107A L102 R257 SY _IN JACK 18OHM1/16W R255 C188 SV_Y 100OHM1/16W 100N 16V 2.2uH 2.2uH SC_IN...
  • Page 42 HDMI 3.3V POWER V33_ADC V33ADC FB302 V33ADC1 V33ADC1 V33HDMI 300 OHM AVDD18 V18_33HDMI C305 C306 10uF 16V V33HDMI V33ADC_PLL 100nF 50V C301 C307 10N 50V V33ADC_PLL V33ADC_PLL 100nF 50V C311 R314 U405A 100nF 50V FILT VCC18 1K62 1/10W 1% FILT V18_33HDMI HSY NC HSY NC...
  • Page 43 VCC5 R602 C602 SIF1+ 0.1uF 50V SIF1- 0R05 1/16W C648 R604 U604 100nF 50V C649 VCC3AD 10uF 16V VCC5 C603 5VSB 0.1uF 50V V33AUD C662 C615 1.5nF 50V R603 R642 R612 R630 10K 1/10W C645 SW_AMP_RIN 47K 1/16W U405B 1uF 25V C650 1uF 25V APA2176A...
  • Page 44 VCC3 IRDAT VCC3 VCC3 Q402 5VSB R402 PMBS3906 C403 4.7K 1/16W Q403 100nF 50V IRVCC C423 PMBS3906 FB402 150OHM 10UF 6.3V X5R +-20% R405 FB403 150OHM IR_D IRVCC U402 IR_D 560R 1/10W 5% LEDY LED_Y R404 10K 1/10W FB405 150OHM LEDY LEDG R406...
  • Page 45 PN swap for layout 5VSB R510 10K 1/10W R523 10K 1/10W R522 10K 1/10W R519 10K 1/10W R526 10K 1/10W U405C R512 10K 1/10W R509 10K 1/10W R511 10K 1/10W SCL_A_Tuner 6 GPIO_18/GVON GPIO_19/GVOFF SDA_A_Tuner 6 PANEL_ON GPIO_20/OEV/TTL_DE V33LV TX3BN TX3BN1 AMP_MUT AVDD3V_LV(3.3V)
  • Page 46: Power Board

    9.2 Power Board 715G4313P01000003S R9 65 100 OHM 1/4W R9 01 C901 100 OHM 1/4W R9 02 100 OHM 1/4W 1N 500V Coil T901 R9 03 L901 POWER X''FMR 100 OHM 1/4W +16V BD901 R90 4 R905 D901 KBP208GL 100K 1/4W 100 K 1/4W MBRF20200CT C944...
  • Page 47 +16V L904 C927 C929 100UH IC904 100N 50V C928 47UF 35V RT8482GS 330UF 35V D906 R987 13K 1/6W GBIAS GATE FB901 GATE BEAD B3100B C932 C931 82UF 100V C933 Q902 R927 R928 R929 CN906 470NF 25V AO4438 C934 R930 DCTL 100N 50V ACTL C935...
  • Page 48: Led Board

    9.3 LED Board 715G4087T01000004W L301 CN301 CONN LED_W 81G 15W 1 EL 33G8032 2F HR T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size TPV MODEL 絬 隔 瓜 絪 腹 Key Component 01-LED PCB NAME 715G4087 <称爹>...
  • Page 49: Key Board

    9.4 Key Board 715G4053K01000004F SW01 VOL+ ~2.59V TACT SW FWRD H1.5MM 20K 1/8W 1% SW02 VOL- ~2.12V TACT SW FWRD H1.5MM 8.2K +-1% 1/8W SW03 ~1.72V 3V3_STB TACT SW FWRD H1.5MM 4.32KOHM +-1% 1/8W SW04 CN01 NC/0.1uF/16V NC/4.7uF/16V ~1.29V TACT SW FWRD H1.5MM PWR-SW FUNC_KEY 2.74K 1/8W 1%...
  • Page 50: Ir Board

    9.5 IR Board 715G4086R01000004S CN201 CONN U201 IRRV VOUT R201 15K 1/10W C201 0.1uF 16V 33G8032 3F HR T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size TPV MODEL 絬 隔 瓜 絪 腹 Key Component 01-IR PCB NAME...
  • Page 51: Exploded View

    10. Exploded View...
  • Page 52 Item Description DECO BEZEL PANEL I/O BRACKET MAINFRAME MAIN BOARD LED BOARD DECO BACK LIGHT HINGE Item Part No. Description STAND 0Q1G 930 6 47 CR3 SCREW(MAINFRAME/BEZEL) BASE 0M1G1730 8120 SCREW(POWER BOARD/MAINFRAME/MAIN BOARD) KEY COVER 0M1G1730 6120 SCREW(MAINFRAME/PANEL) 0Q1G 940 8 47 CR3 SCREW(MAINFRAME/BEZEL) KEY BAORD 0M1G1140 6120...
  • Page 53: Bom List

    11. BOM List Note: The parts information listed below are for reference only, and are subject to change without notice. Please go to http://cs.tpv.com.cn/hello1.asp for the latest information. E23ASANSWEB13N Location Part No. Description Remark 036T 600 18109 NONWOVEN FABRTC 040G 581689 4A BARCODE LABEL FOR 1 045G 77500 BARCODE RIBBON...
  • Page 54 CN602 033G3802 4B Y WAFER CN402 033G3802 8B Y CONNECTOR CN701 033G380212B Y CONNECTOR 12P 2.0PITCH 055G 23524 WELDING FLUX WITHOUT PB C636 067G215C4714HV EC 470UF 25V 10*13 C640 067G215C4714HV EC 470UF 25V 10*13 C666 067G215C4714HV EC 470UF 25V 10*13 L600 073G 253158 H CHOKE COIL 22UH+/-25%...
  • Page 55 U101 056G 662502 IC ESD AZC199-04S.R7G SOT23-6L U103 056G 662502 IC ESD AZC199-04S.R7G SOT23-6L U101 056G 662505 IC ESD AOZ8105CI SOT-23-6 AOS U103 056G 662505 IC ESD AOZ8105CI SOT-23-6 AOS U404 056G113353A IC M24C32-WMN6T SO-8 ST U402 056G1133923 IC MX25L4005AM2C-12G SOP-8 U402 056G1133923 1 IC MX25L4005AM2I-12G SOP-8...
  • Page 56 R224 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R245 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R246 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R301 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R319 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R429 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN...
  • Page 57 R264 061G0402681 JF RST CHIP 680R 1/16W 5% FENGHUA R657 061G0402750 JY RST CHIPR 75OHM +-5% 1/16W YAGEO R655 061G0402750 JY RST CHIPR 75OHM +-5% 1/16W YAGEO R263 061G0402750 JY RST CHIPR 75OHM +-5% 1/16W YAGEO R619 061G0603000 JF RST CHIPR MAX 0R05 1/10W FENGHUA R313 061G0603000 JF RST CHIPR MAX 0R05 1/10W FENGHUA...
  • Page 58 R442 061G0603103 JF RST CHIPR 10K OHM +-5% 1/10W FENGHUA R454 061G0603103 JF RST CHIPR 10K OHM +-5% 1/10W FENGHUA R465 061G0603103 JF RST CHIPR 10K OHM +-5% 1/10W FENGHUA R466 061G0603103 JF RST CHIPR 10K OHM +-5% 1/10W FENGHUA R277 061G0603104 JT RST CHIP 100K 1/10W 5% TZAI YUAN...
  • Page 59 R150 061G0603750 JY RST CHIPR 75 OHM +-5% 1/10W YAGEO R161 061G0603750 JY RST CHIPR 75 OHM +-5% 1/10W YAGEO R656 061G0603750 JY RST CHIPR 75 OHM +-5% 1/10W YAGEO R614 061G06037501FF RST CHIPR 7.5KOHM +-1% 1/10W FENGHUA R618 061G06037501FF RST CHIPR 7.5KOHM +-1% 1/10W FENGHUA R172 061G08053832FF...
  • Page 60 C334 065G060310432K CAP CHIP 0603 100NF K 50V X7R C333 065G060310432K CAP CHIP 0603 100NF K 50V X7R C332 065G060310432K CAP CHIP 0603 100NF K 50V X7R C331 065G060310432K CAP CHIP 0603 100NF K 50V X7R C329 065G060310432K CAP CHIP 0603 100NF K 50V X7R C328 065G060310432K CAP CHIP 0603 100NF K 50V X7R...
  • Page 61 C726 065G060310432K CAP CHIP 0603 100NF K 50V X7R C464 065G060310432K CAP CHIP 0603 100NF K 50V X7R C466 065G060310432K CAP CHIP 0603 100NF K 50V X7R C467 065G060310432K CAP CHIP 0603 100NF K 50V X7R C469 065G060310432K CAP CHIP 0603 100NF K 50V X7R C470 065G060310432K CAP CHIP 0603 100NF K 50V X7R...
  • Page 62 C477 065G080510615K CHIP 10UF 16V X5R 0805 C604 065G080510615K CHIP 10UF 16V X5R 0805 C622 065G080510615K CHIP 10UF 16V X5R 0805 C649 065G080510615K CHIP 10UF 16V X5R 0805 C644 065G080510617Z CAP CHIP 0805 10U 16V Y5V -20~+80% C646 065G080510617Z CAP CHIP 0805 10U 16V Y5V -20~+80% C651 065G080510617Z CAP CHIP 0805 10U 16V Y5V -20~+80%...
  • Page 63 L103 073T 6322910M CHIP IND 0603 2.2UH+-10% MICROGATE L102 073T 6322910M CHIP IND 0603 2.2UH+-10% MICROGATE L101 073T 6322910M CHIP IND 0603 2.2UH+-10% MICROGATE R206 073T 6322910M CHIP IND 0603 2.2UH+-10% MICROGATE L106 073T 6322910M CHIP IND 0603 2.2UH+-10% MICROGATE CN301 088G 34019H VA HDMI HEADER 19P V/T H:13.0MM...
  • Page 64 E715 715G4087T01000004S LED BOARD PCB 2nd source E715 715G4087T01000004W LED BOARD PCB P15G8299 1CKD BKT-VESA PLTVAC604SQDHC POWER BOARD 040G 45762412B CBPC LABEL GND2 009G6005 1 GROUND TERMINAL GND1 009G6005 1 GROUND TERMINAL CN902 033G327813D CONNECTOR CN906 033G3802 6B YH CONN.6P 2.0 DIP CN906 033G3802 6B YH WAFER...
  • Page 65 705TQA93022 D903 ASS'Y D903 093G 60298 DIODE SBT15006JST 15A/60V TO-220ML(LS) D903 093G 60946 SCHOTTKY MBRF20150CT 20 150 0M1G1730 8120 SCREW Q90T0195 1 HEAT SINK 709T4313 QM001 COMSUPTIVE ASS'Y 055G 23524 WELDING FLUX WITHOUT PB Q55G 100625 TIN STICK_LOW ARGENTUM IC901 056G 379529 IC LD7576AGR SOP-7 IC904...
  • Page 66 R972 061G08051009FY RST CHIP R 10OHM +/-1% 1/8W R962 061G08051009FY RST CHIP R 10OHM +/-1% 1/8W R960 061G08051009FY RST CHIP R 10OHM +/-1% 1/8W R959 061G08051009FY RST CHIP R 10OHM +/-1% 1/8W R958 061G08051009FY RST CHIP R 10OHM +/-1% 1/8W R956 061G08051009FY RST CHIP R 10OHM +/-1% 1/8W...
  • Page 67 R919 061G0805332 JF RST CHIPR 3.3KOHM +-5% 1/8W FENGHUA R919 061G0805332 JY RST CHIPR 3K3 +-5% 1/8W YAGEO R934 061G08053602FF RST CHIPR 36KOHM +-1% 1/8W FENGHUA R934 061G08053602FT RST CHIP 36K 1/8W 1% R924 061G08053901FT RST CHIP 3K9 1/8W 1% R924 061G08053901FY RST CHIPR 3.9KOHM +-1% 1/8W YAGEO...
  • Page 68 R922 061G1206624 JT RST CHIPR 620 KOHM +-5% 1/4W TZAI YUAN R921 061G1206624 JT RST CHIPR 620 KOHM +-5% 1/4W TZAI YUAN R920 061G1206624 JT RST CHIPR 620 KOHM +-5% 1/4W TZAI YUAN R922 061G1206624 JY RST CHIPR 620 KOHM 1/4W YAGEO R921 061G1206624 JY RST CHIPR 620 KOHM 1/4W YAGEO...
  • Page 69 Q918 057G 417513 T TRA 2N3904 TO-92 FOSHAN LANJIAN Q915 057G 417513 T TRA 2N3904 TO-92 FOSHAN LANJIAN Q913 057G 417513 T TRA 2N3904 TO-92 FOSHAN LANJIAN Q912 057G 417513 T TRA 2N3904 TO-92 FOSHAN LANJIAN Q911 057G 417513 T TRA 2N3904 TO-92 FOSHAN LANJIAN Q910 057G 417513 T...
  • Page 70 J906 095G 90 23 JUMPER WIRE J903 095G 90 23 JUMPER WIRE J901 095G 90 23 JUMPER WIRE J924 095G 90 23 JUMPER WIRE J905 095G 90 23 JUMPER WIRE J908 095G 90 23 JUMPER WIRE FB902 095G 90 23 JUMPER WIRE FB903 095G 90 23...
  • Page 71 004F061210T 01 METAL WASHERS12.0*4.72*1.0T 004F061212T 00 WASHER 004F061210M 00 METAL WASHERS12.0*6.03*4.70H 004F0612121 00 WASHER 004F0611051 00 WASHER 089G 17356C553 AUDIO CABLE 1800MM...

Table of Contents