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LTDN50K22DGWUS

50H5G

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Summary of Contents for 40H5

Page 1: ...LCDTelevision Service Manual Chassis MT5651APOI Product Type 40H5 48H5 50H5G Ver 1 0 February 2014 ...

Page 2: ...d the following 14 4 1 USB Software Upgrading directly 15 4 2 USB upgrading unsuccessfully 15 4 3 Upgrading with the FlashTool0 6 0 exe 17 4 4 Network online updating 20 5 Trouble shooting 25 5 1 Troubleshooting for Remote Control 27 5 2 Troubleshooting for Function Key 28 5 3 TV won t Power On 29 5 4 Troubleshooting for Audio 30 5 5 Troubleshooting for TV VGA HDMI input 31 5 6 Troubleshooting for...

Page 3: ...ibed in 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 servic...

Page 4: ...fied or altered without written permission from RCA Hisense Eassumes 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 p...

Page 5: ...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 with factory tape and o...

Page 6: ...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 connector is loose d...

Page 7: ...ck 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 specified If any connection other than the one specified is made between...

Page 8: ...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 lightning flash with arrowhead symbol within an equilateral triangle i...

Page 9: ... 9 2 Product Function Specifications 2 1 Product Function Rear ...

Page 10: ... 10 2 2 Specifications ...

Page 11: ...D menu 3 Press CH CH button select the function menu press VOL VOL enter the selected function menu Press VOL VOL button adjust values in the menu b With user s RC 1 Power TV On 2 Press Menu button and call up User OSD Menu 3 Select Audio Balance when Balance is 0 4 Enter 1 9 6 9 in sequence Note If necessary re enter number keys 5 Factory OSD appears 6 Press Menu again and leave factory OSD ...

Page 12: ... 12 3 2 Factory OSD Menu ...

Page 13: ...C or user RC U Can enter factory mode only with user s RC Note MODE M is only used for factory production 3 2 3 Version Info Item Default Options Note 1 Version Software version 2 Date The date of current version Note Software version info of the TV readable only 3 2 4 Clear the EEPROM Item Meaning Note Clean Protected Clear partly Clean data except WB data and Auto Color data Clean All Clear comp...

Page 14: ... d Restart the TV 3 3 Designer Menu Note The above Factory Service OSD Menu is reference for chassis MTK5651 please refer to the actual units to determine the appearances for different TV 4 Software Upgrading Before upgrading read the following First Upgrade the software Second To clear the EEPROM A Select the item Clear Unprotected B Press VOL button to clear the EEPROM data C Close the OSD menu ...

Page 15: ...kg 40H5 Insert USB Disk to USB port and then turn on the TV The TV will identify the software and upgrade automatically 4 2 USB upgrading unsuccessfully If USB upgrading unsuccessfully then need burning the Nand Flash program file bin to the Nand Flash 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...

Page 16: ... 16 4 2 1 Install the driver Double click the icon install the driver Select the default value the driver will be installed step by step ...

Page 17: ...ng with the FlashTool0 6 0 exe 1 FlashTool is a green program needing no installation After Connect the unit to your pc with a USB to serial port cable run FlashTool0 6 0 exe Please refer to the following steps to set ...

Page 18: ... 18 How to choose Communicate port and flash baud rate See the following instruction Select mode of main chip Communicate port Set Flash Baud Rate serial port ...

Page 19: ...e picture COM4 is connected to the TV so select COM4 and if COM6 is connected to the TV so select COM6 Select the right baud rate according to chip model For this unit chip model is MT5651 select 115200 2 Click to connect if connect successfully then button from red turn green ...

Page 20: ...es two ways one is Auto Upgrade the other is Network Upgrade If Auto Upgrade is ON then Network Upgrade is invalidated if Network Upgrade is on then Auto Upgrade is invalidated Auto Upgrade When it is set to on Turn on automatic check whether or not have any new updating file in servers when connects to the network Customer can download and update according to the guide Network Upgrade Check the p...

Page 21: ... 21 1 Auto Upgrade Power on Figure 1 If have checked new version then bounce the following Figure 2 ...

Page 22: ... 22 Select update to download Figure 3 When Finish downloading system automatic verify updating wizard Figure 4 ...

Page 23: ...fter verify bounce dialog to select yes to sure to update the firmware Waiting Figure 5 Upgrade successfully power off and restart TV can bounce following prompt message otherwise upgrade is defeat Figure 6 ...

Page 24: ... 24 2 Network Upgrade Network upgrade and auto upgrade have little difference only in figure 2 as following Update can step by step according the prompt Auto Upgrade figure 1 Network upgrade figure 2 ...

Page 25: ...When there is something wrong with your TV you can try turning off the TV and then restart it You can also operate according to the follow chart If the problems still cann t be solved please contact the profession technician ...

Page 26: ... 26 ...

Page 27: ...rol 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 ...

Page 28: ...ng 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 29: ...er 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 HITACHItech support OK ...

Page 30: ... 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 31: ...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 32: ...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 33: ... 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 ...

Page 34: ... 34 6 Signals Block Diagram and power assign 7 Schematic circuit diagram 8 Explode View The next page ...

Page 35: ...MPONENT Y0P SOY0 PB0P PR0p AV Crystal KEY IR FAT IN CVBS1P AIN4_L R_AADC AIN1_L R_AADC COMPONENT R L VGAAUDIOIN SPEAKER AMP HEADPHONE SPDIF AV AUDIO IN HDMI IN_3 27M 4G Byte HDMI IN_1 SDVT 10A WF2 AIN1_L R_AADC USB1 2_DP USB1 2_DM AL0 AR0_ADAC ASPDIF ETHERNET TXV_N TXV_P RXV_N RXV_P FCC ID Number WiFi Module Crystal 12M FE1_QFP48 N89 WU172HS 2GX2 ...

Page 36: ... Tuner IF IF AV_OUT LINE IN LINE OUT Headphone Out SPDIF OUT SPDIF OUT LVDS LVDS Port MT5651 Main Chip DRAM USBx3 HDMIx3 VGA AV IN IR JTAG YPbPr1 RGB HDMI2 Eth USB0 UART CVBS SC SPEAKER OUT HPOUT SPEAKER AMP Block Diagram USB1 USB2 HDMI1 HDMI0 SCART_FS_SEL LOCAL_DIM_EN PWR_FAULT EMMC_RST ADIN0 MEMC_ON OFF 3D_EN LED_DX OPWM6 LED3 PHYAD3 LED2 PHYAD2 Title Size Document Number Rev Date Sheet of 1 17 ...

Page 37: ...28 AO3401L AO4459 LVDSVDD 5V VCCK 5VSB ADJ1117 3 3VS AZ1084S ADJ AP1084 ADJ1117 DDRV AVDD3V3 DVDD3V3 3 3V_TUNNER 1 57A F2 5V_USB nanoSMDC200F 2 12V 14V AMP_POWER 12V 1 5A 1 17A 2 15A 1 71A 50mA 1 18A 515mA 368mA 350mA 550mA ...

Page 38: ...Brand Retail model number Version Factory model number Hisense A LTDN40K20DWUS 1 2 3 5 6 7 8 9 11 12 13 40H5 ...

Page 39: ...LTDN50K22DGWUS 50H5G ...

Page 40: ...48H 05 HIS EN SE ...

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