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BBK LEM1968DT Service Manual
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BBK LEM1968DT Service Manual

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SERVICE MANUAL
：ＬＥＭ１９６８ＤＴ／ＬＥＭ２２６８ＦＤＴ／ＬＥＭ２４６８ＦＤＴ
MODEL
SAFETY PRECAUTION
SPECIFICATION
BLOCK DIAGRAM
CIRCUIT DIAGRAM
FACTORY MODE&ADJUSTMENT
UPGRADE SOFTWAR
TROUBLE SHOOTING
APPENDIX
（ＳＯＵＲＴＩＯＮ　ＭＳＤ３０９）
CONTENTS

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  • Page 1 SERVICE MANUAL ：ＬＥＭ１９６８ＤＴ／ＬＥＭ２２６８ＦＤＴ／ＬＥＭ２４６８ＦＤＴ MODEL （ＳＯＵＲＴＩＯＮ　ＭＳＤ３０９） CONTENTS SAFETY PRECAUTION SPECIFICATION BLOCK DIAGRAM CIRCUIT DIAGRAM FACTORY MODE&ADJUSTMENT UPGRADE SOFTWAR TROUBLE SHOOTING APPENDIX...
  • Page 2 H IJKLM NOM+ PNQRMS + H OPMLTUMH KOP ./0 12 134567 2 0 890 :;< =1 9;8>=? 6@12 A67 < ;>= 0 810 9=2 < /=2 B? 69@:< 2 2 < /;< 2 B? =1=8< 12 ; 2 ? 0 1C2 6D 2 =7 =:< ? 0 :2 1/6:C 2 6? 2 B=? 168;7 2 0 8E @? 3F ./0 12 134567 2 0 890 :;<...
  • Page 3 Ｐｒｏｄｕｃｔ　Ｓｐｅｃｉｆｉｃａｔｉｏｎ Model LEM1968DT / LEM2268FDT / LEM2468FDT Solution MSD309 PAL BG/DK/ I SECAM BG/DK/L 48.25~863.25 MHz 38.90MHz （BG,DK,I） Picture I.F. 33.40 (BG) Sound I.F. 32.40MHz(DK,L) ATV System 32.90MHz(I) Tuning System FS With PLL Tuner Band Standard system with hyper band...
  • Page 4 2.5W NICAM / STEREO Audio Bass Treble Balance OSD Language Russian , English Brand INNOLUX MT185GW0 Model LEM1968DT LCD Panel Size 18.5” （Only For Reference, Backlight Parameters according to panel model） 0.3mm (H) x Pixel Pitch 0.3mm(V) Horizontal (dots) 1366...
  • Page 5 Backlight LEM2268FDT 0.248 mm x Pixel Pitch 0.248mm Horizontal (dots) 1920 LCD Panel Resolution Vertical (Lines) 1080 （Only For Brand Reference, Model LM230WF5 Parameters according Size 23.6” to panel model） Backlight LEM468FDT 0.265 mm x Pixel Pitch 0.265mm Horizontal (dots) 1920 Resolution Vertical (Lines)
  • Page 6 Ｂｌｏｃｋ　Ｄｉａｇｒａｍ 1.8V Power manage Power Module 3.3V DC/DC & LDO 1.2V DDR 1 DDR 2 MAX3543 Antenna CVBS& LCD Panel MSD309PX Demodulator ,Decoder, SCALER,ADC,Audio/Vid 30PIN 2.0mm LVDS jack eo Decoder …… TDA1517 Headp Audio Amplifier hone Speaker HDMI Headphone serial jack Flash CVBS&R/L...
  • Page 7 L0M05(00)_20110815.sch-1 - Mon Sep 19 10:58:10 2011...
  • Page 8 L0M05(00)_20110815.sch-2 - Mon Sep 19 10:58:15 2011...
  • Page 9 L0M05(00)_20110815.sch-3 - Mon Sep 19 10:58:53 2011...
  • Page 10 L0M05(00)_20110815.sch-4 - Mon Sep 19 10:58:56 2011...
  • Page 11 L0M05(00)_20110815.sch-5 - Mon Sep 19 10:58:58 2011...
  • Page 12 L0M05(00)_20110815.sch-6 - Mon Sep 19 10:58:59 2011...
  • Page 13 IR BOARD SCHEMATICS TV&DVD KEY BOARD SCHEMATICS...
  • Page 14 Ｉｎｔｅｒｆａｃｅ　Ｄｅｓｃｒｉｐｔｉｏｎ...
  • Page 15 NO NO NO NO Description Description NO NO NO NO Description Description Description Description Description Description COAXIAL Output USB 2.0 jack CON9,CON11 HDMI Input CON1 Speaker Jack CON7 VGA Input CN1(optional) power supply jack RF Input Key Jack PC Audio Input CN5(optional) 12V power supply jack Full Scart CN11...
  • Page 16 ★CN10 CN10: : : : ( ( ( ( 7PIN2.0 7PIN2.0) ) ) ) DVD INTERFACE DVD INTERFACE( ( ( ( Optional) Optional) CN10 CN10 7PIN2.0 7PIN2.0 DVD INTERFACE DVD INTERFACE Optional) Optional) Definition Description SPI Communication Protocol SCL SPI Communication Protocol SDA DRIN Right Channel of DVD Audio Input SPI Communication Protocol STB...
  • Page 17 ★CN11 CN11 CN11 CN11( ( ( ( 6PIN2.0 6PIN2.0 6PIN2.0) ) ) ) I I I I nternal power supply jack 6PIN2.0 nternal power supply jack nternal power supply jack (Optional) nternal power supply jack (Optional) (Optional) (Optional) Definition Description 12V Power Supply BL_ON Back Light ON/OFF...
  • Page 18 EDA2- LVDS EVEN2 - Signal EDA1+ LVDS EVEN1 + Signal EDA1- LVDS EVEN1 - Signal EDA0+ LVDS EVEN0 + Signal EDA0- LVDS EVEN0 - Signal ODA3+ LVDS ODD3 + Signal ODA3- LVDS ODD3 + Signal OCK+ LVDS ODD Clock + Signal OCK- LVDS ODD Clock - Signal ODA2+...
  • Page 19 FACTORY MODE AND ADJUSTMENT 1) How to enter service mode Press “Source” button on the remote control, then press”2580”, the service menu will be displayed.
  • Page 20 2) Service mode description Color Temp: select a color temperature mode that you want to adjust; R Gain: red gain for white balance adjusting; G Gain: green gain for white balance adjusting; B Gain: blue gain for white balance adjusting; R Offset: red offset for white balance adjusting;...
  • Page 21 Ｓｏｆｔ　Ｕｐｄａｔｉｎｇ Main Board Software upgrade 1 Please burn the software to USB device. Noted please, software name have to be MERGE309.bin. 2 Power on TV, and switch source to ATV. 3 Insert USB device to TV, then screen will display a message window to inform you upgrade TV or not.
  • Page 22 ＴＲＯＵＢＬＥ　ＳＨＯＯＴＩＮＧ 1 231 1 45 6 7 8 9 8            (&   "   (&    +# $     "  % # & '           ...
  • Page 23 12 34 56 7 8 8 9 5 4 8 5 9 2 3  5       !   "#  $ ("# ) *  "#  ' +  % !  ,( + -                        ...
  • Page 24 1 2 3 4 4 567 8 9 3 4 9 7 3  2  3      ! "# $ % " " $ &  ' ,& ( -  $ &  ) ".
  • Page 25 12 2 34 5 6 2 7 6 8 9 7 2 4   9 7            !"  # # $%# # $%# & ' (!" ) *   !"  + ) ,+  - +   &...
  • Page 26 ＡＶ，Ｓｃａｒｔ　ａｎｄ　ＨＤＭＩ　ｍｏｄｅ　ｒｅｐａｉｒ　ｆｌｏｗｃｈａｒｔ !"#$" %& '( ) *+ , '- * * , .  "/          /0 +  0 (*) &  7 8 4. 9 :  , .  0 *9 50 *( 0 (*) & +0 1&...
  • Page 27 12 2 34 5 6 2 7 6 8 9 7 2 4   9 7     !" # $ ! ! # %  & '  ( !   , - '% . /  # %  ( !. 0( !  ( !  "(  ) *   %+ 1 - '% !  # %  & 0 ( ! 2 $ "...
  • Page 28 1 2 3 4 5 5 6 7 8 9 3 6 5 4  9 6       ! " #    " $  %    ! " #    " $  % &$ ' (  "...
  • Page 29 USB Repair Flowchart START Enter USB mode Insert USB device Can’t find the Check the USB device are Fully Reinsert the device USB device Insert Check the USB device is normal Change the USB device Check the USB Signal Wire are Insert the wire Fully Insert 1: Change the USB Sub board.
  • Page 30 APPENDIX: Power Supply Board Specification...
  • Page 31 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. PAGE EDITION: 2 of 13 Table of contents Input Electrical Characteristics Overview Output Electrical Characteristics Overview Output Voltage ,Current & Regulation. DC Output Ripple & Noise. Output Transient Response. DC Output Hold-Up Time. DC Output Overshoot At Turn On &...
  • Page 32 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION : PAGE 3of 13 Temperature Humidity Altitude Cooling Method Vibration Impact...
  • Page 33 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION : PAGE 4 of 13 1.1 Table 1 Input Electrical Characteristics Overview...
  • Page 34 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION : PAGE 5 of 13 1.2 Output Electrical Characteristics Overview 1.2.1 Table 2 Output Voltage ,Current & Regulation. Output Voltage Regulation Min. current Rated current Peak current +12V 1.2.2 Table 3 DC Output Ripple & Noise. Output Voltage Ripple &...

  • Page 35: Output Transient Response

    TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION : PAGE 6 of 13 1.2.3 Output Transient Response. Table 4. Test condition. Slew Rate Voltage regulation Test Condition: Load Changing Scope Min. to 50% load and 50% to Max load 0.2A/uS +12V,±5%;...
  • Page 36 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION: PAGE 7 of 13 1.2.5 Table 6 DC Output Overshoot At Turn On & Turn Off. + 12V + 12V Note: All of dc output current from Min. to Max. 1.2.6 Table 7 DC output voltage rise time Output Voltage 120Vac input &Full Load...
  • Page 37 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION : 8 of 13 PAGE 1.4 Protection: 1.4.2 Table 10 DC Output Over current Protection. Output Voltage Over Current Comments +12V 4Atyp Hiccup 1.4.3 Table 11 DC Output Short Circuit Protection. Output Voltage Comments +12V...
  • Page 38 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION : 9of 13 PAGE 2. Isolation 2.1 Table 12 2.2 Table 13 Safety 4.1 EMI...

  • Page 39: Environmental Requirement

    TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION : 10of 13 PAGE 4.2 EMS 5. Environmental Requirement 5.1 Temperature * Operating: * Store: 5.2 Humidity * Operating: From 10%to90% relative humidity (non-condensing). * Store: From 5 to 95% relative humidity (non-condensing).
  • Page 40 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION : 11of 13 PAGE 5.3 Altitude * Operating: to10,000 ft. * Store: to 20,000ft. 5.4 Cooling Method * Ventilation cooling . 5.5 Vibration Testing * 10-55Hz, 49.0m/s (5G), 3minutes period, 60minutes each along X, Y and Z axis. 5.6 Impact Testing * 196.1m/s (20G),11ms, once each X, Y and Z axis.

  • Page 41: Pin Connection

    TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION : 12of 13 PAGE 8. Pin Connection Table 15 Pin-CON2 Connection And Function TYPE : 2.0MM*6PIN Pin Connection Function 1.2.3 V OUTPUT V RETURN 4.5.6 TYPE : 3.96MM*3PIN( Table 16 Pin-C0N1 Connection And Function Pin Connection Function...

  • Page 42: Power Supply Mounting

    TOPOW CH P/N: CUSTOMER P/N: EDITION : 13of 13 PAGE SHEN ZHEN ELECTRONICS CO 9. Power Supply Mounting...
  • Page 44 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. PAGE EDITION: 2 of 13 Table of contents Input Electrical Characteristics Overview Output Electrical Characteristics Overview Output Voltage ,Current & Regulation. DC Output Ripple & Noise. Output Transient Response. DC Output Hold-Up Time. DC Output Overshoot At Turn On &...
  • Page 45 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION : PAGE 3of 13 Temperature Humidity Altitude Cooling Method Vibration Impact...
  • Page 46 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION : PAGE 4 of 13 1.1 Table 1 Input Electrical Characteristics Overview...
  • Page 47 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION : PAGE 5 of 13 1.2 Output Electrical Characteristics Overview 1.2.1 Table 2 Output Voltage ,Current & Regulation. Output Voltage Regulation Min. current Rated current Peak current +12V 1.2.2 Table 3 DC Output Ripple & Noise. Output Voltage Ripple &...
  • Page 48 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION : PAGE 6 of 13 1.2.3 Output Transient Response. Table 4. Test condition. Slew Rate Voltage regulation Test Condition: Load Changing Scope Min. to 50% load and 50% to Max load 0.2A/uS +12V,±5%;...
  • Page 49 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION: PAGE 7 of 13 1.2.5 Table 6 DC Output Overshoot At Turn On & Turn Off. + 12V + 12V Note: All of dc output current from Min. to Max. 1.2.6 Table 7 DC output voltage rise time Output Voltage 120Vac input &Full Load...
  • Page 50 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION : 8 of 13 PAGE 1.4 Protection: 1.4.2 Table 10 DC Output Over current Protection. Output Voltage Over Current Comments +12V 5Atyp Hiccup 1.4.3 Table 11 DC Output Short Circuit Protection. Output Voltage Comments +12V...
  • Page 51 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION : 9of 13 PAGE 2. Isolation 2.1 Table 12 2.2 Table 13 Safety 4.1 EMI...
  • Page 52 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION : 10of 13 PAGE 4.2 EMS 5. Environmental Requirement 5.1 Temperature * Operating: * Store: 5.2 Humidity * Operating: From 10%to90% relative humidity (non-condensing). * Store: From 5 to 95% relative humidity (non-condensing).
  • Page 53 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION : 11of 13 PAGE 5.3 Altitude * Operating: to10,000 ft. * Store: to 20,000ft. 5.4 Cooling Method * Ventilation cooling . 5.5 Vibration Testing * 10-55Hz, 49.0m/s (5G), 3minutes period, 60minutes each along X, Y and Z axis. 5.6 Impact Testing * 196.1m/s (20G),11ms, once each X, Y and Z axis.
  • Page 54 TOPOW CH P/N: CUSTOMER P/N: SHEN ZHEN ELECTRONICS CO., LTD. EDITION : 12of 13 PAGE 8. Pin Connection Table 15 Pin-CON2 Connection And Function TYPE : 2.54MM*6PIN Pin Connection Function 1.2.3 V OUTPUT V RETURN 4.5.6 TYPE : 3.96MM*3PIN( Table 16 Pin-C0N1 Connection And Function Pin Connection Function...
  • Page 55 TOPOW CH P/N: CUSTOMER P/N: EDITION : 13of 13 PAGE SHEN ZHEN ELECTRONICS 9. Power Supply Mounting...
  • Page 56 +12V +12V R8 R9 R10 R12 R11 Title Size Number Revision Date: 19-Jan-2011 Sheet of File: C:\Documents and Settings\Administrator\ Drawn By: \TPE056 SCH.DDB...

  • Page 57: Specification Sheet

    ＡＰＰＥＮＤＩＸ　Ｃ　：　ＢＡＣＫＬＩＧＨＴ　ＢＯＡＲＤ　ＳＰＥＣＩＦＩＣＡＴＩＯＮ SPECIFICATION SHEET Customer Pare Care Description Model M185B3-LA1 &V185B1-LE1 V2.1 DATE Approved by Customer Approve Check Prepare 0756-3818829 3820260 0756-3818826 http://www.paict.cn E-mail: jason@penic.cn penic888@163.com 1200 18666113200...
  • Page 58 Electronic technology co., ltd PROJECT NO.: LDA15-45V160H electronic technology co.,ltd Jiuzhou Avenue East, NO.1200 sixth floor Tel: 0756-3818829 3820260 ,Guangdong Zhuhai City Fax:0756-3818826 E-mail: jason@pacit.cn penic888@163.com http://www.pacit.cn LDA15-45V160H LED driver Ver:1.0 2/6...

  • Page 59: General Description

    Record of Revision Revision Date Page Old description New Description Remark First Edition for 2011-03-31 Customer 1. General description Scope: LDA15-45V160H This sepic LED driver for 18.5” of LCD backlight system. 2. Applications M185B3-LA1 &V185B1-LE1 V2.1 18.5” LED Backlight LCD panels For 3.

  • Page 60: Electrical Requirements

    4.Electrical Requirements This section defines the electrical requirements for the LED driver 4.1Input Characteristics PARAMETER SYMBOL UNIT REMARK Input voltage 12.0 Input current 0.60 0.89 Vadj=0V RL= LED Panel Input power 7.16 9.82 Vadj=0V RL= LED Panel Off State Input voltage Von/off On State Bright adjust...
  • Page 61 5.2 Output connector 5.2.1 Connector type CN5 : 6712K-F12N-02R (ENTERY CO.,LTD) Pin number Output Name IRLED(Current Out) IRLED(Current Out) IRLED(Current Out) IRLED(Current Out) VLED(Voltage in) VLED(Voltage in) IRLED(Current Out) IRLED(Current Out) IRLED(Current Out) IRLED(Current Out) 5.2.2Connector type (CN1): S2BPHA (2P 2.0mm) Pin number Output Name VLED(Voltage in)
  • Page 62 7.0 SHAPES AND DIMENSIONS CN1 6P2.0 CN10 electronic technology co.,ltd Jiuzhou Avenue East, NO.1200 sixth floor Tel: 0756-3818829 3820260 ,Guangdong Zhuhai City Fax:0756-3818826 E-mail: jason@pacit.cn penic888@163.com http://www.pacit.cn LDA15-45V160H LED driver Ver:1.0 6/6...
  • Page 63 Electronic technology co., ltd SPECIFICATION SHEET Customer Pare Care Description Model DATE Approved by Customer Approve Check Prepare 0756-3818829 3820260 0756-3818826 http://www.paict.cn E-mail: jason@penic.cn penic888@163.com 1200 18666113200...
  • Page 64 Electronic technology co., ltd PROJECT NO.: LDA15-63V240K electronic technology co.,ltd Jiuzhou Avenue East, NO.1200 sixth floor Tel: 0756-3818829 3820260 ,Guangdong Zhuhai City Fax:0756-3818826 E-mail: jason@pacit.cn penic888@163.com http://www.pacit.cn LDA15-63V240K LED driver Ver:1.0 2/6...
  • Page 65 Record of Revision Revision Date Page Old description New Description Remark First Edition for 2011-03-31 Customer 1. General description Scope: LDA15-63V240K This sepic LED driver for 23” of LCD backlight system. 2. Applications 23” LED Backlight LCD panels For LG LM230WF5-TLD1 3.
  • Page 66 4.Electrical Requirements This section defines the electrical requirements for the LED driver 4.1Input Characteristics PARAMETER SYMBOL UNIT REMARK Input voltage 12.0 13.0 Input current 1.28 1.48 Vadj=0VRL= LM230WF5-LA1 Panel Input power 15.35 16.32 Vadj=0VRL= LM230WF5-LA1 Panel Off State Input voltage Von/off On State Bright adjust...
  • Page 67 5.2 Output connector 5.2.1 Connector type CN9 : 6P1.0 FFC (ENTERY CO.,LTD) Pin number Output Name IRLED(Current Out) IRLED(Current Out) VLED(Voltage in) VLED(Voltage in) IRLED(Current Out) IRLED(Current Out) 5.2.2Connector type (CN1): S2BPHA (2P 2.0mm) Pin number Output Name VLED(Voltage in) IRLED(Current Out) Operating Temperature Range:0 ~ 40 Operating Humidity: 10% ~ 85% RH, non-condensing.
  • Page 68 7.0 SHAPES AND DIMENSIONS CN1 6P2.0 CN10 Q2 TO-252 2504 GTM 12N10 TO-252 100V12A CEU electronic technology co.,ltd Jiuzhou Avenue East, NO.1200 sixth floor Tel: 0756-3818829 3820260 ,Guangdong Zhuhai City Fax:0756-3818826 E-mail: jason@pacit.cn penic888@163.com http://www.pacit.cn LDA15-63V240K LED driver Ver:1.0 6/6...
  • Page 69 Electronic technology co., ltd SPECIFICATION SHEET Customer Pare Care Description Model DATE Approved by Customer Approve Check Prepare 0756-3818829 3820260 0756-3818826 http://www.paict.cn E-mail: jason@penic.cn penic888@163.com 1200 18666113200...
  • Page 70 Electronic technology co., ltd PROJECT NO.: LDA15-45V240H electronic technology co.,ltd Jiuzhou Avenue East, NO.1200 sixth floor Tel: 0756-3818829 3820260 ,Guangdong Zhuhai City Fax:0756-3818826 E-mail: jason@pacit.cn penic888@163.com http://www.pacit.cn LDA15-45V240H LED driver Ver:1.0 2/6...
  • Page 71 Record of Revision Revision Date Page Old description New Description Remark First Edition for 2011-03-31 Customer 1. General description Scope: LDA15-45V240H This sepic LED driver for 21.5~24” of LCD backlight system. 2. Applications 21.5” LED Backlight LCD panels For CMO M215H3-LA1 V236H1-DE01 K1.0 3.
  • Page 72 4.Electrical Requirements This section defines the electrical requirements for the LED driver 4.1Input Characteristics PARAMETER SYMBOL UNIT REMARK Input voltage 12.0 13.0 Input current 0.95 1.18 Vadj=0V RL= M215H3-LA1 Panel Input power 11.44 12.95 Vadj=0V RL= M215H3-LA1 Panel Off State Input voltage Von/off On State...
  • Page 73 7.0 SHAPES AND DIMENSIONS CN1 6P2.0 CN10 electronic technology co.,ltd Jiuzhou Avenue East, NO.1200 sixth floor Tel: 0756-3818829 3820260 ,Guangdong Zhuhai City Fax:0756-3818826 E-mail: jason@pacit.cn penic888@163.com http://www.pacit.cn LDA15-45V240H LED driver Ver:1.0 6/6...

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