Hisense MTK8222 Service Manual Download Page 56 | Manualshive

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LCD TV Service Manual

Hisense Confidential

4.4.3 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

Replace Power BD

YES

NO

RED

BLUE

Panel Bright

NO

Replace Main BD

NO

YES

Check signal

Source

YES

NO

YES

Replace Panel

(to contact Hisense tech support.)

OK

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Summary of Contents for MTK8222

Page 1: ...LCDTelevision Service Manual Chassis MTK8222 Ver 1 2 Hisense Electric Co Ltd December 2010...

Page 2: ...Upgrading with the MtkTool 16 3 4 Update with USB directly 21 4 Circuit instruction 23 4 1 Power assign and block diagram 23 4 2 Image and signal process 25 4 3 The main IC description 29 4 4 Troubles...

Page 3: ...of tools specially designed for the purpose The special tools should be used when and as recommended It is important to note that this manual contains various CAUTIONS and NOTICES which should be care...

Page 4: ...specified safety characteristics may create shock fire or other hazards Under no circumstances should the original design be modified or altered without written permission from Hisense Hisense assume...

Page 5: ...ly inserted to prevent blade exposure To prevent electrical shock match wide blade or plug to wide slot fully insert 1 1 4 When replacement parts are required be sure to use replacement parts specifie...

Page 6: ...iately turn off the power Continuing to use the product may cause fire or electric shock 5 If the product emits smoke and abnormal smell or makes an abnormal sound immediately turn off the power Conti...

Page 7: ...ortant for ensuring the safety of the product and the servicing work Be sure to follow these instructions Before starting the work secure a sufficient working space At all times other than when adjust...

Page 8: ...When handling the circuit board be sure to remove static electricity from your body before handling the circuit board Be sure to handle the circuit board by holding the large parts as the heat sink or...

Page 9: ...that the screws parts and cables removed for servicing purposes have all been returned to their proper locations in accordance with the original setup The lightning flash with arrowhead symbol within...

Page 10: ...D appears 6 Press Menu again and leave factory OSD 2 2 Factory OSD Menu 2 2 1 White Balance Note Different source has different WB values Before adjusting please change to desired source 1 Auto Color...

Page 11: ...ense Hungary Australia Hisense Australia France Hisense France Clean Protected Clean data except WB data and Auto Color data Clean All Clean all data Auto Color For VGA and Component Video sources WB...

Page 12: ...seconds d Restart the TV 2 3 Designer Menu Item 0 Item 1 Item 2 Note Picture Mode SOURCE The current program source Brightness Brightness Brightness of VIVID mode Brightness Contrast Contrast of VIVID...

Page 13: ...e Max When value is 100 Think about the Audio out power before adjusting Audio Mode Standard user Music Speech Music 120HZ 500HZ 1 5kHZ 5kHZ Audio Mode 10kHZ Different frequencies for different Audio...

Page 14: ...fter 5 seconds D Restart the TV 4 Write the ADC Calibration values copied just now into the the channels of VGA and component 5 After the operation above all necessarily Renew search the channels for...

Page 15: ...serial port cable USB port connects to your pc and serial port to the TV s RS232 port For the first connecting the pc will recognize and automatically install the USB device The process is just like...

Page 16: ...green program needing no installation It is saved in the folder There are five folders files in this folder altergether The MtkTool using log is restored in the MtkLog folder It records the running ti...

Page 17: ...e following picture Flash chip model Please refer to follow steps to update the software 1 Select mode of Flash chip to MT8226 as the below picture 2 Refer to the next page instruction to select the c...

Page 18: ...vice Manual Hisense Confidential Select mode of Flash chip Communicate port Set Flash Baud Rate Select bin file Start upgrade Information of upgrade process Choose the current USB conversion Port Late...

Page 19: ...he MtkTool main interface Select the right baud rate according to chip model For this unit chip model is MT8226 select 115200 So choose Auto Set Flash BaudRate Note Whether or not click the Auto Set F...

Page 20: ...e Manual Hisense Confidential Click Browse button find the upgrading program file and select it Press Upgrade button and start upgrading The following interface appears on the screen indicating upgrad...

Page 21: ...an update with USB the software name should be HISENSE bin The Updating Steps is set the Source to DMP interface insert the USB the update file HISENSE bin which should be in root directory The TV aut...

Page 22: ...22 LCD TV Service Manual Hisense Confidential After upgrading you must confirm the software in the Factory Menu and you d better CLEAR UNPROTECTLY...

Page 23: ...nd 5V_M The power supply for the audio IC U35 of small size TVs is converted by the output of 12V_M connects ferrite bead and VPA the last the 33V rising circuit and mute circuit are converted by the...

Page 24: ...24 LCD TV Service Manual Hisense Confidential Block diagram...

Page 25: ...al will become IF Signal after the TV Tuner converted and then the Signal will become SIF and VIF signal by sawfilter U16 and U20 finally send to Main IC through U19 Video signal Video of AV1 input th...

Page 26: ...4 by passing the below similar disposal check the diagram for detail The Audio signal of HDMI and USB directly input U34 for disposal AV output send out by the No 11 feet of U34 through the below diag...

Page 27: ...P16A and P9 firstly pass the below diagram to reduce it And then pass U29 to do the shift and choose one then together with PC and SCART Audio to do the convertion through U30 choose one input U34 fo...

Page 28: ...ower on Power control Low level power on UP34 Low level BL on BL control BL ON OFF Low level BL on UP34 passQ2 inverse phase PWM0 BL brightness BL ADJUST Adjust duty ratio PWM0passQ18 inverse phase E2...

Page 29: ...29 LCD TV Service Manual Hisense Confidential 4 3 The main IC description 74HC4052D...

Page 30: ...30 LCD TV Service Manual Hisense Confidential...

Page 31: ...31 LCD TV Service Manual Hisense Confidential...

Page 32: ...32 LCD TV Service Manual Hisense Confidential AO4459...

Page 33: ...33 LCD TV Service Manual Hisense Confidential AP1122EA AP1534...

Page 34: ...34 LCD TV Service Manual Hisense Confidential...

Page 35: ...35 LCD TV Service Manual Hisense Confidential AT24C08AN 10SU 2 7...

Page 36: ...36 LCD TV Service Manual Hisense Confidential...

Page 37: ...37 LCD TV Service Manual Hisense Confidential AZ1084...

Page 38: ...38 LCD TV Service Manual Hisense Confidential cs4344czz...

Page 39: ...39 LCD TV Service Manual Hisense Confidential EM6AA160256DDR...

Page 40: ...40 LCD TV Service Manual Hisense Confidential...

Page 41: ...41 LCD TV Service Manual Hisense Confidential Block Diagram...

Page 42: ...42 LCD TV Service Manual Hisense Confidential G962...

Page 43: ...43 LCD TV Service Manual Hisense Confidential MX29LV320DT...

Page 44: ...44 LCD TV Service Manual Hisense Confidential...

Page 45: ...45 LCD TV Service Manual Hisense Confidential R2A15108FP...

Page 46: ...46 LCD TV Service Manual Hisense Confidential...

Page 47: ...47 LCD TV Service Manual Hisense Confidential...

Page 48: ...48 LCD TV Service Manual Hisense Confidential TDA9885TS...

Page 49: ...49 LCD TV Service Manual Hisense Confidential TJ2996 R1 3...

Page 50: ...50 LCD TV Service Manual Hisense Confidential...

Page 51: ...51 LCD TV Service Manual Hisense Confidential WM8501...

Page 52: ...52 LCD TV Service Manual Hisense Confidential...

Page 53: ...53 LCD TV Service Manual Hisense Confidential...

Page 54: ...Troubleshooting for Remote Control Remote control does not work Try new batteries Replace RC Check IR receiver Change Led IR board Change Led IR cable Replace main board Replace battery Replace remote...

Page 55: ...al 4 4 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...

Page 56: ...ypad 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 Replac...

Page 57: ...nse Confidential 4 4 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 N...

Page 58: ...ense Confidential 4 4 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 R...

Page 59: ...nse Confidential 4 4 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 Repla...

Page 60: ...e Confidential 4 4 7 Troubleshooting for Video S 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...

Page 61: ...61 LCD TV Service Manual Hisense Confidential 5 Explode View 6 Schematic circuit diagram...

Page 62: ...34 4 7uF 16V C234 4 7uF 16V RA39 10K NC RA39 10K NC L69 FB L69 FB R683 47k R683 47k R679 4 7k R679 4 7k R244 100 R244 100 L66 FB L66 FB 1 2 3 Q57 3904 Q57 3904 R674 10k R674 10k R239 4 7k R239 4 7k 1...

Page 63: ...1uF FB18 0603_Bead FB18 0603_Bead GND 3 VOUT 2 VIN 1 U9 LM7805 U9 LM7805 CB217 0 1uF CB217 0 1uF M2 MARK M2 MARK CB5 0 1uF CB5 0 1uF TP98 TP98 CB860 0 1uF CB860 0 1uF CB576 0 1uF CB576 0 1uF R258 1K...

Page 64: ...6 VGASDA 8 VGASCL 8 GND 2 4 5 6 7 8 9 10 11 12 13 14 SPDIFOUT 12 OSCL0 6 8 11 14 OSDA0 6 8 11 14 SOY1 9 AV12_USB 4 GPIO_20 12 AV33_SIFDIG 4 12V_M 2 11 14 DDRV 2 4 5 E4N 14 E4P 14 DV10 2 4 DV33 4 AV12...

Page 65: ...7 0 1uF C900 0 1uF C900 0 1uF C918 4 7uF 10V C918 4 7uF 10V FB66 0603_Bead FB66 0603_Bead C964 0 1uF C964 0 1uF C913 0 1uF C913 0 1uF C925 4 7uF 10V C925 4 7uF 10V C968 0 1uF C968 0 1uF FB44 0603_Bead...

Page 66: ...D11 150 RD11 150 RD7 100 RD7 100 CD25 3300pF CD25 3300pF 1 8 2 7 3 6 4 5 RND3 22x4 R RESCA2010 8N HX RND3 22x4 R RESCA2010 8N HX 1 8 2 7 3 6 4 5 RND11 150x4 R RESCA3216 8N HX RND11 150x4 R RESCA3216 8...

Page 67: ...K R20 1K R172 10K R172 10K R73 100 R73 100 CE47 220uF 16V CE47 220uF 16V 1 2 3 4 CN4 CON4_2 0 CN4 CON4_2 0 CB70 0 1uF CB70 0 1uF R21 220 R21 220 1 2 D106 ESD EGA 0603 D106 ESD EGA 0603 R27 1K R27 1K R...

Page 68: ...YU20081113 VER C 2008 06 10 2008 06 10 2008 06 10 WANGXIYU20081113 VER C WANGXIYU20081113 VER C CB142 0 1uF CB142 0 1uF 1 2 D113 ESD D113 ESD 1 2 D129 ESD D129 ESD R108 1K R108 1K R90 100 R90 100 1 2...

Page 69: ...1 2 D98 EZJZ0V800AA D98 EZJZ0V800AA SIGNAL 8 GND 9 GND 11 GND 13 SIGNAL 10 SIGNAL 12 SIGNAL 14 P16B P16B L6 FB L6 FB C9 47pF C9 47pF R347 510 R347 510 1 2 D97 EZJZ0V800AA D97 EZJZ0V800AA 1 2 D72 EZJZ0...

Page 70: ...05 05 MODIFY 2008 05 05 MODIFY Only for US EU not stuff R76 75 R76 75 C77 10nF C77 10nF R55 68 R55 68 R435 10K R435 10K FB29 80 100MHz FB29 80 100MHz R418 10K R418 10K FB21 80 100MHz FB21 80 100MHz C...

Page 71: ...IC Only for EU US not stuff WANGXIYU20081113 VER C WANGXIYU20081113 VER C 1 2 D47 EZJZ0V800AA D47 EZJZ0V800AA 1 2 D58 EZJZ0V800AA D58 EZJZ0V800AA C93 47nF C93 47nF R209 100 R209 100 1 2 D147 EZJZ0V80...

Page 72: ...R RESC1005L HX R152 10K R RESC1005L HX 1 3 2 Q32 C1815TL1 Q32 C1815TL1 L79 10uH L79 10uH R196 NC R196 NC R44 75 R RESC1005L HX R44 75 R RESC1005L HX D6 IN4148 D6 IN4148 C617 22pF C617 22pF 2 ING 4 OUT...

Page 73: ...7K 1 3 2 QA2 3904 QA2 3904 CA69 4 7uF 16v CA69 4 7uF 16v C415 2 2uF C415 2 2uF R408 100 R408 100 R397 100 R397 100 R59 10K R59 10K R465 100 NC R465 100 NC R425 47K R425 47K RA10 10K RA10 10K R403 47K...

Page 74: ...2N3906 R378 NS 4K7 R378 NS 4K7 R14 4 7K R14 4 7K R372 NS 4K7 R372 NS 4K7 R393 4K7_NC R393 4K7_NC L70 22uH L70 22uH R424 0 NC R424 0 NC C6 1uF C6 1uF R427 0 NC R427 0 NC R380 0R R380 0R R351 1k R351 1...

Page 75: ...0R92101 P0R92201 P0T831014 P0T831015 P0T831016 P0T901010 P0V90102 P0V90503 P0XP80206 P0XP80207 P0XP80208 P0XP80209 P0XP802010 P0XP80306 P0XP80307 P0XP80308 P0XP80309 P0XP803010 P0XP80403 P0XP80404 P0X...

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