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Kivi 40FK20G Service Manual

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SERVICE MANUAL
LED TV
Ｃ Ｒ Ｇ
Model No.
40FK20G
３ ４ ６ ３ ７
Chassis
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to
service or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

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  • Page 1 SERVICE MANUAL LED TV Ｃ Ｒ Ｇ Model No. 40FK20G ３ ４ ６ ３ ７ Chassis WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.

  • Page 2: Table Of Contents

    Service Manual Model No.: Chapter 1: General Information 1-1. Table of Contents 1. General Information................1-1. Table of Contents 1-2. General Guidelines 1-3. Important Notice 1-4. How to Read this Service Manual ..................3. Location of Controls and Components........... 3-1. Board Location 3-2.
  • Page 3 Service Manual Model No.: 7. Trouble shooting………….............. 7-1. Simple Check 7-2. Main Board Failure Check 7-3. Panel Failure - 02 -...

  • Page 4: General Guidelines

    Service Manual Model No.: 1-2. General Guidelines When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.
  • Page 5 Service Manual Model No.: 1-3-6 Safety Check after Repairment in the original positions, or whether there are the positions which are deteriorated around the serviced places serviced or not. Check the insulation between the antenna terminal or external metal and the AC cord plug blades. And be sure the safety of that. General Servicing Precautions 1.
  • Page 6 Service Manual Model No.: Electrostatically Sensitive (ES) Devices Some semiconductor (solid-state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor "chip"...

  • Page 7: How To Read This Service Manual

    Service Manual Model No.: 1-3-8. Photo used in this manual The illustration and photos used in this Manual may not base on the final design of products, which may differ from your products in some way. 1-4. How to Read this Service Manual Using Icons: each icon is described in the table below: Note:...
  • Page 8 Service Manual Model No.: Ｃ Ｒ Ｇ Model ３ ９ Screen Size inch Aspect Ratio 16:9 １ ３ ６ ６ ＊ ７ ６ ８ Resolution 9.5 (GRAY TO Response Time (ms) GRAY) Angel of View 160/150 deg Color Display 16.7M No.

  • Page 9: Location Of Controls And Components

    Service Manual Model No.: 3. Location of Controls and Components 3-1 Main Board - 08 -...
  • Page 10 Service Manual Model No.: 3-2-1 Function Description: Main Board Process signal which incept from exterior equipment then translate into signal that panel can display.  &RQQHFWRU GH¿QLWLRQ Main board connector Keypad and remote connector (J 2 ) １ Speaker connector (CN501) Pin number Signal name Description...

  • Page 11: Lcd Panel

    Service Manual Model No.: 3-3. LED Panel Ｌ Ｃ ３ ９ ０ Ｔ Ａ ２ Ａ - 10 -...

  • Page 12: Disassemble And Assemble

    Service Manual Model No.: 4. Disassemble and assemble 4-1 Remove the Stand Base faces upward ｂ ａ ｓ ｅ stand base 4-2 Remove the Back Cover unit. - 11 -...

  • Page 13: Remove The Main Board

    Service Manual Model No.: 4-3 Remove the Main board connect wires, such as LVDS wire, speaker wire - 12 -...

  • Page 14: Remove The Ir Board

    Service Manual Model No.: 4-4 Remove the IR board take out the IR board - 13 -...

  • Page 15: Installation Instructions

    Service Manual Model No.: 5. Installation Instructions 5-1 External Equipment Connections Accessories Remote Control - 14 -...

  • Page 16: Electrical Parts

    +3.3V/670MA Q101 L511 +3.3V_Standby/320MA SY8088B 3407 +3.3V_Normal/150MA 3.3V_TUNER/200MA 11Ω-4A-0603 PWR_ON/OFF SY8088B +1.5V_DDR/220MA MSD3463GS +12VB +5V_Standby/3A 100V~240V SY8113B/3A PWR_ON/OFF +12VB AC POWER IN POWER BOARD DD401 FUSE 5V_USB/1A +24VB +12VB VCC_Pannel /1.5A AO3407 +12V/1.65A +12V_Normal/3A +12VB MP7751 U107 SY8113B/3A +1.2V_VDDC/3A PWR_ON/OFF HDMI1(ARC) NAND_FLASH HDMI输入X2...

  • Page 17: Circuit Diagram

    RT9118 贴片电容/1uF-25V-M-0603-X5R 贴片电容/0.1uF-16V-M-0402-X5R 贴片电容/1uF-25V-M-0603-X5R 贴片电容/0.1uF-16V-M-0402-X5R PVCC +12V CD36 RT9118 PVDDL BSTP_L CD16 贴片磁珠/10Ω-4A-0603 CD38 贴片电容/0.22uF-16V-M-0402-X5R FB12 LOUT+ CD12 PVSS VOUTP_L 电解电容-高频低阻/220uF-16V-Z,Φ6.3*11.5*2.5,编带黑色 贴片磁珠/600Ω-2A-0805 CD20 贴片电容/2200PF-50V-K-0402-X7R CD37 CD39 CD34 CD24 PVDDR BSTN_L CD22 NC/贴片电容/1000PF-50V-K-0402-X7R 贴片电容/0.22uF-16V-M-0402-X5R 插座/4P-2.54-卧式-单列 贴片电容/2200PF-50V-K-0402-X7R GVDD FB13 LOUT- CD17 AMP-INL ROUT+ AMP_AUL GVDD...
  • Page 18 二极管-整流1N5406 二极管-整流1N5406 2012-10-25 二极管-整流1N5406 欧规组件统一改为450V耐压 2013-5-23 二极管-整流1N5406 美国市场改为400V耐压 PM38 2012-11-6 FB14 D803 D804 改善低温-10oC不启动 二极管-肖特基/STB10100VDC 10A/80A/100V/0.5V/ TO-263 强茂低VF D809由1N4007改为FR107 +12V_Normal +12V 穿心磁珠/10Ω-25%-3.5*6*0.8mm，编带52 D807 D805 C1034 +12V +36V EC805 R865 涤纶电容/4700PF-400V-K,D=5,编带,直脚 金属氧化膜电阻/100KΩ-2W-J 卧式 EC806 R882 PEC5 贴片电容/2200PF-50V-K-0402-X7R 贴片电容/1uF-25V-M-0603-X5R 电解电容-高频低阻/68uF00H，编带 东阳光 PEC6 68KΩ-2W-J（立式）...
  • Page 19 1.5V Power for DDR3 1.2V 3A for VDDC U107 工作频率474Khz占空比10%工作电流800mA,实测电压1.16V，纹波35mV IC-DCDC/SY8113BADC,3A,18V,TSOT23-6 Silergy，基准0.6V，轻载高效 1.2V_VDDC 工作频率1.398Mhz占空比30%工作电流234mA,实测电压1.54V,纹波50mV +12V_Normal C117 贴片电容/0.01uF-50V-K-0402-X7R 811MA LD21 +1.5V_DDR L101 贴片功率电感/2.2uH-2.5A-5.9*5.9*3.1mm，带屏蔽 贴片功率电感/2.2uH-2A-4.5*4*4mm，不带屏蔽 C111 贴片电容/10uF-25V-M-0805-X5R R103 TPS563201 R134 C118 贴片电容/10uF-25V-M-0805-X5R 贴片电容/33PF-50V-J-0402-NP0 +5V_Standby C122 SOT23-6 贴片电容/1uF-25V-M-0603-X5R 贴片电阻/10KΩ-1/16W-F-0402 贴片电阻/68KΩ-1/16W-F-0402 RD135 CD96 贴片电容/10uF-6.3V-M-0603-X5R C125 C105 贴片电容/10uF-6.3V-M-0603-X5R...
  • Page 20 CORE POWER DDR3 POWER OTHER RXO0- IM_S 贴片电容/0.1uF-25V-M-0402-X5R C260 RXO_0- IM_S_1 RXO0+ RXO_0+ RXO1- QM_S 贴片电容/0.1uF-25V-M-0402-X5R C257 RXO_1- QM_S_1 RXO1+ AVDD_DDR_DATA RXO_1+ +1.5V_DDR AVDD_DDR_CMD AVDD_DDR_DATA AVDD5V_MHL 贴片电容/0.1uF-25V-M-0402-X5R RXO2- AVDD_DDR_CMD IP_S C258 1.2V_VDDC VDDC DVDD_DDR IP_S_1 RXO_2- AVDDL_DVI RXO2+ AVDD_ETH VDDC VDDC RXO_2+ FB205...
  • Page 21 LVDS CONNECTOR CN202 插座/2*20P-2.0-立式-双列-带卡扣-针脚2.5 RXO0+ RXO0- RO0+ RO0- RXO1+ RXO1- RO1+ RO1- RXO2+ RXO2- RO2+ RO2- RXOC+ RXOC- ROC+ ROC- RXO3+ RXO3- RO3+ RO3- RXO4+ RXO4- RO4+ RO4- RXE0+ RXE0- +3.3V_Normal RE0+ RE0- RXE1+ RXE1- RE1+ RE1- RXE2+ RXE2- RE2+ RE2- RXEC+ RXEC-...
  • Page 22 HDMI2(ARC) HDMI1-RX2P HDMI1/5V DATA2+ DATA2 SHIELD HDMI1-RX2N HDMI1/5V HDMI1-RX2P HDMI1_RX2P DATA2- HDMI1_RX2P HDMI1-RX1P HDMI1-RX2N HDMI1_RX2N DATA1+ HDMI1_RX2N HDMI1-RX1P HDMI1_RX1P RD101 DATA1 SHIELD HDMI1_RX1P HDMI1-RX1N 贴片电阻/1KΩ-1/16W-F-0402 HDMI1-RX1N HDMI1_RX1N RD105 DAT1A- HDMI1_RX1N HDMI1-RX0P 贴片电阻/10KΩ-1/16W-F-0402 DATA0+ R104 R102 DATA0 SHIELD HDMI1-RX0N 贴片电阻/10KΩ-1/16W-F-0402 贴片电阻/10KΩ-1/16W-F-0402 HDMI1-RX0P HDMI1_RX0P HDMI1-HPD...
  • Page 23 贴片电容/0.1uF-25V-M-0402-X5R 贴片电感/27nH-200mA-0402-J，铁氧体叠层 贴片电容/0.022uF-25V-M-0402-X5R 3.3V_TUNER 贴片电容/470PF-50V-K-0402-X7R 贴片电容/0.022uF-25V-M-0402-X5R 贴片电感-高频/270nH-100mA-0402-J，陶瓷叠层，顺络 SDCL1005CR27JTDF 贴片电容/120PF-50V-K-0402-X7R 贴片电感-高频/6.8nH-300mA-0402-J，陶瓷叠层，顺络 SDCL1005C6N8JTDF 贴片电感-高频/270nH-100mA-0402-J，陶瓷叠层，顺络 SDCL1005CR27JTDF 75 ohm line RFIN RFIN RFIN 二极管-肖特基/BAV99 215MA/1A/85V/1.25V/SOT-23 I2C Interface Filter DVB_S2高频头 TUNER_GND Close R842 UD16 CT4的选取： CT10 1.内置隔离器时，CT4=0R 3.3V_TUNER 2.不带内置隔离时，CT4=470PF NC/1.8pF 贴片电阻/330Ω-1/16W-J-0402 高频头屏蔽盖(欧规)/LD3910-WJ38-01 贴片电容/120PF-50V-K-0402-X7R 贴片磁珠/1KΩ-150mA-0402 CT9 贴片电容/1000PF-50V-K-0402-X7R TU_SCL SCL-T TUNER_SCL...
  • Page 24 PCMCIA J701 CI插座/长39mm，垫高8mm，不带桥，插件， PCM_CD1_N PCM_D3 CD1# TS0_D3 PCM_D4 MDO3 TS0_D4 PCM_D5 MDO4 TS0_D5 PCM_D6 MDO5 TS0_D6 PCM_D7 MDO6 TS0_D7 PCM_CE_N MDO7 CE1# +5V_DVD +5V_PCMCIA PCM_A10 CE2# PCM_OE_N VS1# PCM_IORD_N PCM_A11 IORD# PCM_IOWR_N PCM_A9 IOWR# TS1_SYNC PCM_A8 TS1_SYNC MISTRT TS1_D0 PCM_A13 MDI0 TS1_D1 PCM_A14...
  • Page 25 VGA INPUT AV INPUT 1.S2+同轴（不带AV)： LD13 NC，LD14贴，LD12 NC 2.不带S2,带AV 和同轴： SIDE AV LD13 贴，LD14NC，LD12 贴 SIDE_AV SIDE_AV DDC_SCL_D SIDE-AU-L CLOSE TO IC UART_RX SIDE-AU-R RD109 DDC_SDA_D UART_TX CD65 RD71 贴片电阻/100Ω-1/16W-J-0402 VGA_VSYNC VGA-VSYNC NC/10PF/50V/NPO 贴片电阻/75Ω-1/16W-F-0402 RD72 贴片电阻/100Ω-1/16W-J-0402 VGA_HSYNC VGA-HSYNC J410 VGA-B 耳机座/φ3.5，5P，四节15，孔心高3，不带检测，黄色，卧插...

  • Page 26: Wiring Connection Diagram

    Service Manual Model No.: 6-3. Wiring Connection Diagram NO.Name Connection Wire(For Speaker) LVDS Wire Connection Wire(For Remote and Keyboard) Ｂ ａ ｃ ｋ ｌ ｉ ｇ ｈ ｔ 　 Ｗ ｉ ｒ ｅ - 25 -...
  • Page 27 Service Manual Model No.: 7. Trouble shooting 7-1. Simple check - 26 -...
  • Page 28 Service Manual Model No.: 7-2. Main board failure check No picture but have sound Check if Blacklight is test if RD61 3.3V update the software or change mainchip shine is normal Check if there is +12V at PD3 AND QD6 test if RD 40 is ok.
  • Page 29 Service Manual Model No.: AV No sound but have picture Check if there is sound input signal Check the input source Check if there is signal at C220 and C22 Check if there is signal at CD744 and CD743 Change U202 Check if there is signal at FB9.FB11.FB12.FB13 Change UD4 Check LD3 voltage...
  • Page 30 Service Manual Model No.: No sound No picture NO LED indicate Check PD3(12V) PL1(5V) Ch ange the mainboard Check RD40 and RD61 are high Remote ON Check L101(1.2v)LD22(3.3V)LD21(1.5V) Change the U107.UD8.UD7 Chang Check the Q101(3.3V)QD6(12V) Change them. Check L103 (1.2V) LD21(1.5V) Check LD3(12V) Change Check Y1(24MHz)
  • Page 31 Service Manual Model No.: Poor sound Poor sound Verify if sound system is Change sound correct . system For ease of use, recommend that customer format the picture and sound settings in the automatic option. Update the software and Still having make the reboot;...
  • Page 32 Service Manual Model No.: No color for some channel program (black and white) No color for some channel program (blac k and white) Verify if the same Check out of picture and sound problem exists in other system of this channel channels part Change the channel to the right sound check out of picture...
  • Page 33 Service Manual Model No.: How to know whether the Power part is broken? Check if the power cord Reconnect the power cord with the connect well? outlet or Power board. EC805/6 wheather have 300V change Power on and check Replace PD3 PD3 whether have 12V Still having Check if Main board / LVDS wire / Panel are in...
  • Page 34 Trouble Shooting • Mainboard not work Panel not work ™ 1. check if there is +12V/+5V output • 1. check if the voltage input and ™ on the power part. output of voltage boost IC of the • 2.Verify if the DC/DC convertors have backlight is OK.
  • Page 35 Service Manual Model No.: 7-3. Pannel failure Failure Mode Part Name Description Phenomena Failure cause Block Defect :TCP cracking or cracking V B/D Vertical bar Dim or L/D :TCP Sunken :TCP lead cracking :ACF bonding short :Awful environment and something electric enter V Dim Vertal gray line into LCD...
  • Page 36 Service Manual Model No.: Part Name Description Phenomena Failure cause I n c o m i n g I n s p e c t i o n Standard Bright dot dark dot in Dot Defect pannel Bladder between Polarizer and top glass Polarizer Bubble Bladder in Polarizer...
  • Page 37 Service Manual Model No.: Failure Mode Part Name Description Phenomena Failure cause White Screen B/L normal, only white screen display M a y b e c a u s e d by surge current Black Screen B/L normal, and EDS only Black screen display FIIcker...
  • Page 38 Service Manual Model No.: Failure Mode Part Name Description Phenomena Failure cause Mechanlcal When Caused Nolse turn panel,appear b y M e c h a n i c a cacophony noise of backlight unit Ripple Connectric circle Causeed by between mechanism and pannel B/L off...
  • Page 39 Service Manual Model No.: Failure Mode Part Name Description Phenomena Failure cause Brightness B/L unit badness at bottom of LCM Light leakage brighter than normal B / L b r i g h t n e s s Sheet in B/L unit Mechanlcal or B/ asymmetric is uneven...

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