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Kalley LTDN40K221TWAM Service Manual

Summary of LTDN40K221TWAM

  • Page 1

    Lcd television service manual chassis： msd6308 product: ltdn40k221twam ver 1.0 hisense electric co.，ltd. June , 2015.

  • Page 2: Contents

    - 2 - contents contents .................................................................................................................................................................. - 2 - service manual ...............................................................................................

  • Page 3: Service Manual

    - 3 - service manual 1. Precautions and notices before servicing the lcd tv, read the safety precautions in this manual. When replacement parts are required, be sure to use replacement parts specified by the manufacturer. Proper service and repair is important to the safe, reliable operation of all ...

  • Page 4: 1.1 Warning

    - 4 - undertaken any such broad evaluation. Accordingly, a serviceman that uses a service procedure or tools, which are not recommended by hisense, must first satisfy himself thoroughly that neither his safety nor the safe of the equipment will be jeopardized by the service method selected. Hereafte...

  • Page 5

    - 5 - all ics and many other semiconductors are susceptible to electrostatic discharges (esd). Careless handling during repair can reduce life drastically. When repairing, make sure that you are connected with the same potential as the mass of the set by a wristband with resistance. Keep components ...

  • Page 6

    - 6 - -the insulation of the mains lead should be checked for external damage. 1.1.6 (1) do not touch signal and power connector while this product operates. Do not touch emi ground part and heat sink of film filter. (2) do not supply a voltage higher than that specified to this product. This may da...

  • Page 7: 1.2 Notes

    - 7 - cause electric shock. (8) do not damage or modify the power cable. It may cause fire or electric shock. (9) if the power cable is damaged, or if the connector is loose, do not use the product: otherwise, this can lead to fire or electric shock. (10) if the power connector or the connector of t...

  • Page 8

    - 8 - been turned off. • while the main power is on, do not touch any parts or circuits other than the ones specified. If any connection other than the one specified is made between the measuring equipment and the high voltage power supply block, it can result in electric shock or activation of the ...

  • Page 9

    - 9 - original routing and fixing configuration when servicing is completed. All the wires are routed far away from the areas that become hot (such as the heat sink). These wires are fixed in position with the wire clamps so that the wires do not move, thereby ensuring that they are not damaged and ...

  • Page 10: 2. Product Specifications

    - 10 - 2. Product specifications 2.1 main board layout 2.1.1 1main board: 6374 the top: usb hdmi ant msd6308 cable vga vga audio component/av audio component/av video.

  • Page 11

    - 11 - side terminal-1: side terminal-2:.

  • Page 12

    - 12 - bottom:.

  • Page 13: 2.3 Tv Front and Rear

    - 13 - 2.2 this service manual includes tv model panel mode lvds(main-panel) main board & power board lhd32k220twam hd315dh-b12 hx2-2×20klb90p\90.0\无\roh rsag2.908.6374-01\roh ltdn40k221twam hs*hd396df-e01 hx2-2×20klb150p\150.0\无\roh rsag2.908.6374\roh 2.3 tv front and rear tv front.

  • Page 14

    - 14 - tv rear.

  • Page 15: 3.2 Factory Osd Menu

    - 15 - 3. Factory/service osd menu and adjustment 3.1 how to enter the factory osd menu with user’s rc power on the tv. 1. Press “menu” button and call up user osd menu. 2. Select “ sound” -> “balance” item. 3. Press number key 1->9->6 ->9 in sequence when “balance” item is focused. Note: if necessa...

  • Page 16

    - 16 - option: init:.

  • Page 17

    - 17 - version: 3.2.2、design menu note ： the above “factory/service osd menus” are reference only, please refer to the actual unit to determine the appearances..

  • Page 18

    - 18 - 4. Software updating software updating includes mboot write and main software update. Usually first write mboot to nand flashwith (mstv_tool.Exe) then can update main software with securecrt. 4.1 updating main board with securecrt 4.1.1 hardware connecting you can update the software through ...

  • Page 19

    - 19 - for mtk chassis,the bebug boad set as following. 4.1.2 first use mstar bebug tools,and you have to install drive software for bebug board. If your pc is windows xp system: 1、first install ftcunin.Exe of ftc100103(mstar) rar file in your pc. This is a drive software of mstar another: if your p...

  • Page 20

    - 20 - please follow these steps: a) copy the usbupgrade.Bin to the root directory of an usb disk. Insert the usb disk to the board. B) connect the board with your pc via the debug tool. Open the software of securecrt in your pc. C) ac power on the board while pressing the enter key of your pc. D) c...

  • Page 21

    - 21 - b) set i2c parameters. Click i2c‐> set i2c to open the window of below and adjust the i2c speed to 30. C) load the mboot files. Click view‐>eagle/nugget nand program to open the window below..

  • Page 22

    - 22 - load the 3 files to the window as below. D) click program button above and it will write mboot files to the nand flash. E) when you see the status become to “ status: success, please reset power ”, please wait for 2 minutes and then close the mstv_tool. F) ac power off the board. Now you can ...

  • Page 23

    - 23 - 4.3 upgrading with the usb disk 4.3.1 tv in normal state 1. Copy the “ usbupgrade.Bin” file that mboot and main software named to the root directory of two usb disks respectively. 2. Insert the usb disk into the usb slot of the tv set. 3. Press “menu” button of remote control and call up fact...

  • Page 24: 5.Troubleshooting

    - 24 - 6. After update succeeds, tv set will restart automatically. 7. First update the boot software, second update the main software. In order to convenience, prepare two usb disks to save different software respectively. 5.Troubleshooting 5.1 troubleshooting for remote control remote control does...

  • Page 25

    - 25 - 5.2 troubleshooting for function key buttons does not work check switches check key board check key bd cable change key bd replace main board check solder connections and see if any switches are stuck. Replace key bd ok yes yes no yes no no.

  • Page 26

    - 26 - 5.3 tv won’t power on make sure power source is live replace power cord check/replace ir bd or keypad pca tv won’t power on is led light? No yes check power output yes no check power cord only one works replace main bd try power on by rc and button neither works both work power on ok yes no r...

  • Page 27

    - 27 - 5.4 troubleshooting for audio no sound check connecter check speaker wire replace main board reconnect replace speaker wire yes yes no no check speaker set replace speaker set yes no ok yes no power supply board.

  • Page 28

    - 28 -.

  • Page 29

    - 29 - 5.5 troubleshooting for tv/vga/hdmi input no picture on the screen check signal source check connect check cable replace main board make sure signal source is available reconnect replace cable no yes yes no no.

  • Page 30

    - 30 - 5.6 troubleshooting for ypbpr input no picture on the screen check source work or not check connect check wires (green blue, red) replace main board check source device reconnect replace wires no yes yes no yes no.

  • Page 31: 6. Circuit Instruction

    - 31 - 5.7 troubleshooting for video input no picture on the screen check source work or not check connect check cable/ wires replace main board check signal source reconnect replace cable/wires no yes yes no yes no 6. Circuit instruction 6.1 power assign and signal block diagram.

  • Page 32

    - 32 -.

  • Page 33: 7. Schematic Circuit Diagram

    - 33 - 7. Schematic circuit diagram 8. Explode view.

  • Page 34

    5 5 4 4 3 3 2 2 1 1 d d c c b b a a mp1495 +1.15v_vddc/3a yuv mhl av_l/r earphone l r 12v hdmi1 msd6308rt 0r power in 5vain hdmi2 hdmi3 hdmi输入x3 yuvi输入x1 vga输入x1 vga av av输入x1 tuner输入 usb1 usb2 usb输入x2 网络输入x1 rj45 vga_l/r yuv_l/r 音频输入x3 遥控接收、键控板 panel lvds if1 if2 if tas5707 l r l_out r_out eeprom 3...

  • Page 35

    5 5 4 4 3 3 2 2 1 1 d d c c b b a a power for panel 3.3v standby power 3.3v normal power h:on l:off main ic max:300ma power input vout=0.765*(1+r1/r2)=5.16v r1:130k, r2:27k//140k. 靠近dc-dc 靠近电感l08和dc-dc放置 r1 r2 5v power-12v/5v core power 1.15v-mp1495(3a) sot-223 1.5v normal power for ddr3 250ma 1.25 ...

  • Page 36

    5 5 4 4 3 3 2 2 1 1 d d c c b b a a close to mstar ic &hdcp eeprom i2c address at a0. Reset system xtal key pad& ir debug hdmi & audio rf close to mst ic nand & ci & ts & front end audio line in vga close to mstar ic 靠近mstar ic normal power 3.3v standby power 3.3v ddr3 power core power rgb interface...

  • Page 37: Msd Miu

    5 5 4 4 3 3 2 2 1 1 d d c c b b a a msd miu ddr3_resetb ddr3_cke avdd_dram title size schematic name rev date: sheet of hisense electric co.,ltd. No.11,jiangxi road,qingdao,china www.Hisense.Com 1.0 hisense msd6308rt a 4 15 monday, march 16, 2015 title size schematic name rev date: sheet of hisense ...

  • Page 38

    5 5 4 4 3 3 2 2 1 1 d d c c b b a a power decouple note:靠近lvds插座 lvds port lva0n lva0p lva1p lva1n lva2p lvaclkp lvaclkn lva2n lva3p lva4p lva4n lva3n lvb0p lvb1p lvb1n lvb2p lvbclkp lvbclkn lvb2n lvb3p lvb4p lvb4n lvb3n lvb0n ai bit_sel1 sel m-scl m-sda m-scl tcon_scl m-sda tcon_sda lvb4n lva4n tco...

  • Page 39

    5 5 4 4 3 3 2 2 1 1 d d c c b b a a vga vga_rx vga_tx vga-g hs_rgb vs_rgb vga-r vga-b vga-g vga-b vga-r vs-rgb hs-rgb vga-b vga_rx vga_tx vga-g vga-r uart_rx 2 uart_tx 2 vga-lin 2 vga-rin 2 vga-hsync 2 vga-vsync 2 vga-r 2 vga-g 2 vga-b 2 title size schematic name rev date: sheet of hisense electric ...

  • Page 40

    5 5 4 4 3 3 2 2 1 1 d d c c b b a a usb0 usb interface c83靠近usb插座放置 equal length and differential impedance 90ohm wifi/blue tooth usb power usb1_dp usb1_dm usb0_dm wifi_en usb0_dm 5v_usb_wifi_m usb0_dp usb0_dp wifi_en 5v_usb 5vain 5v_usb_wifi 5v_usb 5v_usb_wifi usb1_dm 2 usb1_dp 2 wifi_en 2 usb0_dm ...

  • Page 41

    5 5 4 4 3 3 2 2 1 1 d d c c b b a a coaxial out hdtv input closed to msd6308 av&hdtv input cvbs1-rca av_l av_r av_l cvbs1-rca av_r av-rin spdif_out rgb1-ypbpr_gin+ rgb1-ypbpr_bin+ rgb1-ypbpr_rin+ rgb1-ypbpr_bin+ rgb1-ypbpr_rin+ rgb1-ypbpr_gin+ av-lin av_l av_r rgb1-ypbpr_bin+ rgb1-ypbpr_gin+ rgb1-yp...

  • Page 42

    5 5 4 4 3 3 2 2 1 1 d d c c b b a a hdmi3 靠近ic放置 hdmi1 靠近ic放置 arc det cec & arc 根据arc所放的hdmi定 hdmi3-rx1p hdmi3-rx1n hdmi3-rx0n hdmi3-rx2n hdmi3-clkn hdmi3-rx2p hdmi3-clkp hdmi3-rx0p hdmi3-sda hdmi3-scl hdmi3-hpd hdmi3-sda cec hdmi3_rx1p hdmi3_rx2n hdmi3_rx1n hdmi3_rx2p hdmi3_rx0n hdmi3_rx0p hdmi3_cl...

  • Page 43

    5 5 4 4 3 3 2 2 1 1 d d c c b b a a power off mute mute 0: normal 1: shutdown 耳机输出 n80 i2c addr: 0x54 speaker amp hp_dec power_off-mute power_off-mute mute-amp mute_s ph_l ph_r pwd_mt shutdown shutdown mute_5727 mute-amp amp-lout+ amp-lout- amp-rout- amp-rout+ pop_mute_drv632 mute_632 pop_mute_drv63...

  • Page 44

    5 5 4 4 3 3 2 2 1 1 d d c c b b a a ethernet phy lan_led0 lan_led1 mdi_rn mdi_rp mdi_tn mdi_tp lan_led0 lan_led1 mdi_rn mdi_rp mdi_tn mdi_tp lan_led0 2 lan_led1 2 mdi_tp 2 mdi_tn 2 mdi_rp 2 mdi_rn 2 title size schematic name rev date: sheet of hisense electric co.,ltd. No.11,jiangxi road,qingdao,chi...

  • Page 45: Nand Flash

    5 5 4 4 3 3 2 2 1 1 d d c c b b a a nand flash micron nand需要nc nand power 需靠近主ic 需靠近主ic nand-rez nand-ale nand-wez nand-wpz nand-d1 nand-d1 nand_d4 nand-d0 nand-d7 nand-cez1 nand-d6 nand-d5 nand-cle nand-d4 nand_ale nand-d3 nand-cez nand-d2 nand-rbz nand-cez1 nand-d2 nand_d5 nand-cez nand_cle nand-d...

  • Page 46

    5 5 4 4 3 3 2 2 1 1 d d c c b b a a i2c address: write:c0 read:c1 c367 q值：15(min) bpf_in bpf for 38.9mhz or 38mhz c1 c2 c2 c357 使用fk1602或va1p1bf8402时，c364、c367、c359和l32nc掉， c357=0r，c365=0r，r313=0r，r314=0r，r312=0r，r315=0r c365 c359=180p,for 38.9mhz or 38mhz(pal) c359=100p,for 45.75mhz(ntsc) r313 clos...

  • Page 47

    5 5 4 4 3 3 2 2 1 1 d d c c b b a a 丝印只留c806 丝印只留c957 丝印只留c955 丝印只留c954 pcb上变压器丝印只留t801 bl-on/off bl-adjust bl-adjust vdd gnd_power bl-adjust 12vcc vdd bl-on/off gnd_signal vcc 300v gnd_earth 90v 12vs vcc vcc1 mos-d ref 12vs 90v ref ref mos-d 12vcc vcc1 dimming bl_en gnd dimming bl-on/off 5 bl-adjus...

  • Page 48

    5 5 4 4 3 3 2 2 1 1 d d c c b b a a date change list 20150203 release 20150316 1.增加n24及外围电路； 2.增加主芯片demod部分1.2v和3.3v的供电 title size schematic name rev date: sheet of hisense electric co.,ltd. No.11,jiangxi road,qingdao,china www.Hisense.Com 1.0 hisense msd6308rt a 15 15 wednesday, march 18, 2015 titl...

  • Page 49

    (1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 a b c d e f g h i j k l m n o p q a b c d e f g h i j k l m n o p q r s 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 21 20 23 1 2 3 4 5 speaker bracket 2 1 rsag8.078.4051 1 rsag8.038.4368 rsag6.356...