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LCD TV Service Manual

Hisense Confidential

3—Press the icon beside the baud rate and make sure it is green as the below picture.
4—Set the flash baud rate to 115200 as the below picture.
5—Click the browse button to select the *.bin file that will be updated.
6—Click the “start” button to update software.

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

Later choose com5

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Содержание LCD42V68PAM

Страница 1: ...LCDTelevision Service Manual Chassis MTK8222 Product Type LCD42V68PAM Ver 1 0 Hisense Electric Co Ltd July 2009 ...

Страница 2: ...D Menu 12 4 2 Factory OSD Menu 12 5 Software Upgrading 16 5 1 Get ready for upgrading 16 5 2 Upgrading with the MtkTool 18 5 3 Update with USB directly 22 6 Troubleshooting 24 6 1 Troubleshooting for Remote Control 24 6 2 Troubleshooting for Function Key 25 6 3 TV won t Power On 26 6 4 Troubleshooting for Audio 27 6 5 Troubleshooting for TV VGA HDMI input 28 6 6 Troubleshooting for YPbPr input 29 ...

Страница 3: ...this Service Guide 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 It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in order to minimize the risk of personal injury to service person...

Страница 4: ... or altered without written permission from Hisense Hisense assumes no liability express or implied arising out of any unauthorized modification of design Servicetech assumes all liability 1 1 2 All ICs and many other semiconductors are susceptible to electrostatic discharges ESD Careless handling during repair can reduce life drastically When repairing be sure to use anti static table mats and pr...

Страница 5: ...rer or have the same characteristics as the original part Unauthorized substitutions may result in fire electric shock or other hazards and will void the manufacturer s warranty 1 1 5 Safety regulations require that after a repair the set must be returned in its original condition In addition prior to closing set check that Note All wire harnesses and flex cables are properly routed and secured wi...

Страница 6: ...ock 4 If the product emits smoke and abnormal smell or makes an abnormal sound immediately turn off the power Continuing to use the product it may cause fire or electric shock 5 Do not pull out or insert the power cable from to an outlet with wet hands It may cause electric shock 6 Do not damage or modify the power cable It may cause fire or electric shock 7 If the power cable is damaged or if the...

Страница 7: ...he power source of the TV during servicing To prevent electric shock and breakage of PC board start the servicing work at least 30 seconds after the main power has been turned off Especially when installing and removing the power board start servicing at least 2 minutes after the main power has been turned off While the main power is on do not touch any parts or circuits other than the ones specif...

Страница 8: ...e deformation of parts and short circuits due to residual electric charge Perform a safety check when servicing is completed Verify that the peripherals of the serviced points have not undergone any deterioration during servicing Also verify 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 lig...

Страница 9: ... 9 LCD TV Service Manual Hisense Confidential 2 LCD Panel Spec LCD42V68PAM Panel Model V420H1 L15 JK ROH SN 1058010 2 1 General Description ...

Страница 10: ... 10 LCD TV Service Manual Hisense Confidential 2 2General Features ...

Страница 11: ...2V68PAM No Description Part No Type Model PCB Model 1 Main Board 120070 RSAG2 908 1497 3 ROH RSAG7 820 1637 VER E ROH 2 Power Board 120173 RSAG2 908 1192 13 ROH RSAG7 820 1185 VER E ROH 3 Keypad PCA 113354 RSAG2 908 1088 ROH RSAG7 820 1101 VER B ROH 4 IR Board 116295 RSAG2 908 1260 2 ROH RSAG7 820 1337 VER B ROH ...

Страница 12: ...ssary re do number keys 11 Factory OSD appears 12 Press Menu again and leave factory OSD 4 2 Factory OSD Menu 4 2 1 White Balance Note Different source has different WB values Before adjusting please change to desired source 1 Auto Color For VGA and Component Video sources WB values must be adjusted And at others signal sources the auto colour does not work Before adjusting prepare the signal inst...

Страница 13: ...actory Huang Dao Huangdao Industrial Park Gui Yang Gui Yang Industrial Park Liao Ning Liao Ning Industrial Park Hungary Hisense 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 values must be adjusted And at others signal sources the auto colour does not...

Страница 14: ...item Clean All b Press VOL button to clear the EEPROM data c Close the OSD menu after 5 seconds d Restart the TV 4 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 mode Brightness Saturation Saturation of VIVID mode STD Brightness Brightness of STD mode STD Contrast Contrast...

Страница 15: ... Audio out power before adjusting Volume 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 Mode PVM 0 350 PVM 350 500 PVM500 1000 PVM 1000 10000 Backlight co PVM 10000 EMI 0 Power Mode Last station The above Factory Service OSD Menu are reference only ...

Страница 16: ...unit 5 1 Get ready for upgrading 5 1 1 Install the driver Double click the icon MTKtools2 44 04 cp210xDriver rar install the driver Select the default value the driver will be installed step by step 5 1 2 Hardware connecting Connect the unit to your pc with a USB to serial port cable USB port connects to your pc and serial port to the TV s RS232 port USB connector to PC Serial connector to TV s RS...

Страница 17: ...TV Service Manual Hisense Confidential For the first connecting the pc will recognize and automatically install the USB device The process is just like the installation of a mini disk see the following picture ...

Страница 18: ... the tool is used The log will be a txt file named by the date and time After connecting the TV with your PC double click icon open the MtkTool If following error appears it means the related port is not be set properly Ignore these errors click Confirm and enter the MtkTool main interface see the following picture Flash chip model Please refer to follow steps to update the software 1 Select mode ...

Страница 19: ... flash baud rate to 115200 as the below picture 5 Click the browse button to select the bin file that will be updated 6 Click the start button to update software 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 Later choose com5 ...

Страница 20: ...the 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 Flash Baud Rate in the window menu depends on the chip type If the flash chip does not support high speed transport do not select this option otherwise reserve the selected mood ...

Страница 21: ...ce 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 upgrading successfully ...

Страница 22: ...can 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 automatic identify the upgrading software step by step according as the informations of the upgrading process USB to the Main board directly ...

Страница 23: ... 23 LCD TV Service Manual Hisense Confidential After upgrading you must confirm the software in the Factory Menu and you d better CLEAR UNPROTECTLY ...

Страница 24: ...roubleshooting 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 control Replace Led IR BD Replace Led IR cable YES YES NO YES NO YES NO ...

Страница 25: ...tial 6 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 ...

Страница 26: ...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 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 ...

Страница 27: ...sense Confidential 6 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 ...

Страница 28: ...isense Confidential 6 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 ...

Страница 29: ...sense Confidential 6 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 ...

Страница 30: ...nse Confidential 6 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 Cable Wires NO YES YES NO YES NO ...

Страница 31: ... 31 LCD TV Service Manual Hisense Confidential 7 Explode View 8 Schematic circuit diagram ...

Страница 32: ...5 6 7 8 9 10 11 12 13 14 15 16 17 2 4 3 1 Hisense LCD42V68PAM ...

Страница 33: ... 4 GB T 818 2000 M6X16 7 Power Cord 1 YS 05 YS 22A 8 Back cover 1 RSAG8 074 544 Black 9 Bottom Label 1 RSAG8 804 3401 10 Side Label 1 RSAG8 804 3550 11 rating label 1 RSAG8 807 4405 12 Mainboard 1 RSAG2 908 1497 3 13 Power board 1 RSAG2 908 1192 13 14 Connector 1 HX2 2X20KLB400P LG 1 15 LCD PANEL 1 V420H1 L15 16 IR board 1 RSAG2 908 1260 2 17 Led Lens 1 RSAG8 640 065 Hisense LCD42V68PAM Parts list...

Страница 34: ...F 16v R341 47K R341 47K C234 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 2 3 Q55 3904 Q55 3904 SDIN 1 DEM SCLK 2 LRCK 3 MCLK 4 VQ 5 FILT 6 AOUTL 7 GND 8 VA 9 AOUTR 10 U7 CS4344 2CH AudioDac U7 CS4344 2CH AudioDac R698 0 R698 0 R684 47 R684 47 RA31...

Страница 35: ...8 0 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 R258 1K D62 SCHOTTKY DIODE B340A D62 SCHOTTKY DIODE B340A D188 B240A D188 B240A TP99 TP99 R1161 3K R1161 3K CE15 220uF 16v CE15 220uF 16v FB 1 EN 2 OCSET 3 Vcc 4 O P 5 O P 6 Vss 7 Vss 8 U3 AP1533 S...

Страница 36: ...ASDA 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 AV12A_RGBB 4 Y0P 9 YPBPR0_GND 9 PB0P 9 PR0P 9 AOMCLK 12 13 ADIN1 6 CVBS6 10 GPIO_0 6 GPIO_1 6 CVBS5 10 GPIO_11 13 UP31 2 6 3V3 2 4 6 7 11 13 14 PWM1 11 SPDIFIN 12 SOY0 9 10 CVBS7 10 5V_M 2 6 8 12 13 14 BOMCLK ...

Страница 37: ...87 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 FB44 0603_Bead C939 0 1uF C939 0 1uF FB41 0603_Bead FB41 0603_Bead FB20 0603_Bead FB20 0603_Bead C912 3300pF C912 3300pF FB56 0603_Bead FB56 0603_Bead C901 220uF 16v LowESR CAP C901 220uF 16v LowESR...

Страница 38: ...N HX RD11 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 8N HX C680 1uF C680 1uF CD21 3300pF CD21 3300pF CD31 4 7uF 10v CD31 4 7uF 10v CD5 220uF 16v LowESR CAP CD5 220uF 16v LowESR CAP CD10 0 1uF CD10 0 1uF CD28 0 01uF CD28 0 01uF 1 8 2 7 3 6 4 5 RND9 ...

Страница 39: ...R85 100 NC R85 100 NC R20 1K 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 R34 10K NC R34 10K NC R174 NS 10K R174 NS 10K R466 0 R466 0 R49 10K R49 10K C293 0 1uF C293 0 1uF R249 NC 2 2K R249 NC 2 2K R175 NS 10K R175 NS 10K R220 10K R220 10K R178 10K...

Страница 40: ...NGXIYU20081113 VER C删除 2008 06 10 2008 06 10 2008 06 10 WANGXIYU20081113 VER C删除 WANGXIYU20081113 VER C删除 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 D122 ESD D122 ESD 1 2 D90 ESD D90 ESD 1 2 D89 ESD D89 ESD CB141 0 1uF CB141 0 1uF R112 100K R112 100K R101 100 R101 100 R106 47K R106 47K 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 22 2...

Страница 41: ...ZJZ0V800AA D98 EZJZ0V800AA SIGNAL 8 GND 9 GND 11 GND 13 SIGNAL 10 SIGNAL 12 SIGNAL 14 黄白红左中右下 P16B 黄白红左中右下 P16B L6 FB L6 FB C9 47pF C9 47pF R347 510 R347 510 1 2 D97 EZJZ0V800AA D97 EZJZ0V800AA 1 2 D72 EZJZ0V800AA D72 EZJZ0V800AA 1 3 2 Q5 3904 Q5 3904 R138 100 R138 100 3 1 2 D99 BAV70 R SOT3N 0 95 2 75 HX D99 BAV70 R SOT3N 0 95 2 75 HX R206 NC 0 R206 NC 0 R116 10K R RESC1005L HX R116 1...

Страница 42: ... 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 C74 10nF C74 10nF R77 68 R77 68 1 1 3 3 2 2 4 4 6 6 5 5 7 7 9 9 8 8 绿蓝红左中右 P8 绿蓝红左中右 P8 R416 12K R416 12K C75 15pF C75 15pF R72 68 R72 68 C83 4 7nF C83 4 7nF 1 2 D43 EZJZ0V800AA D43 EZJZ0V800AA C56 10nF C56 10nF 1 2 D37 EZ...

Страница 43: ...IC Only for EU US not stuff WANGXIYU20081113 VER C更改 WANGXIYU20081113 VER C更改 1 2 D47 EZJZ0V800AA D47 EZJZ0V800AA 1 2 D58 EZJZ0V800AA D58 EZJZ0V800AA C93 47nF C93 47nF R209 100 R209 100 1 2 D147 EZJZ0V800AA D147 EZJZ0V800AA R39 100 R39 100 FB13 0 FB13 0 R470 12K R470 12K R212 75 R212 75 C70 47pF C70 47pF 1 2 D74 EZJZ0V800AA D74 EZJZ0V800AA C55 47pF C55 47pF FB34 0 FB34 0 R213 0 R213 0 R210 100 R21...

Страница 44: ...005L HX R152 10K 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 OUT1 GND 3 5 OUT2 1 IN SAW U16 N9455 SAW U16 N9455 R201 1K R201 1K D132 NC IN4148 D132 NC IN4148 1 2 3 QF1 2N7002 R SOT3N 0 95 2 75 HX QF1 2N7002 R SOT3N 0 95 2 75 HX D11 IN4148 D11 IN41...

Страница 45: ...4 47K 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 R403 47K C382 2 2uF C382 2 2uF R331 100 R331 100 C322 0 1uF C322 0 1uF R332 47K R332 47K C417 2 2uF C417 2 2uF C353 0 1uF C353 0 1uF C413 2 2uF C413 2 2uF C321 0 1uF C321 0 1uF C418 2 2uF C418 2 2u...

Страница 46: ...R484 100K 1 2 3 Q44 2N3906 Q44 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 1k CE84 10uF 16v CE84 10uF 16v R432 47K R432 47K 1 2 3 4 CN10 TJC3 4A CN10 TJC3 4A R368 100K R368 100K D2 5 S1 1 G1 2 S2 3 G2 4 D2 6 D1 7 D1 8 P CH U31 AO4459 R SOIC08N 1 ...

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