Related Manuals for Hisense NT72671
Summary of Contents for Hisense NT72671
- Page 1 LCD Television Service Manual Chassis： NT72671 Version: V 1.0 Hisense Visual Technology Co.，Ltd. December 2, 2020...
- Page 2 REVISION HISTORY Version Revise content Reviser Date V1.00 First issued Zhangxue 2020-12-4 - 2 -...
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Page 3: Table Of Contents
Contents Contents ..................................- 3 - Service Manual ................................- 4 - 1. Precautions and notices ............................. - 4 - 1.1 Warning ..............................- 5 - 1.2 Notes ............................... - 7 - 2. TV boards: ..............................- 10 - 2.1 Main board layout ..........................- 10 - 2.2 TV boards part list .......................... -
Page 4: Service Manual
USE OF NON-AUTHORIZED PARTS WILL VOID THE MANUFACTURE'S WARRANTY Proper service and repair is important to the safe, reliable operation of all Hisense Equipment. The service procedures recommended by Hisense and described 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. -
Page 5: Warning
Ref. No. in the parts list. Use of non-manufacturer's recommended parts may create shock, fire, or other hazards. Under no circumstances should the original design be modified or altered without written permission from RCA. Hisense Eassumes no liability, express or implied, arising out of any unauthorized modification of design. - Page 6 1.1.4 When replacement parts are required, be sure to use replacement parts specified by the manufacturer 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.
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Page 7: Notes
(3) If a foreign substance (such as water, metal, or liquid) gets inside the panel module, immediately turn off the power. Continuing to use the product may cause fire or electric shock. (4) If the product emits smoke, and abnormal smell, or makes an abnormal sound, immediately turn off the power. - Page 8 • At all times other than when adjusting and checking the product, be sure to turn OFF the POWER Button and disconnect the power cable from the 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.
- Page 9 problems resulting from scratches on the parts, the 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.
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Page 10: Tv Boards
2. TV boards: 2.1 Main board layout 2.1.1 The top of main board (RSAG7.820.10588/ROH) - 10 -... - Page 11 NT72671 - 11 -...
- Page 12 2.2 Wiring diagram ( example for 50A683FEVS): XP1： Power for main board jacket Main board terminal Power board terminal definition definition BL_EN/SW BL_EN/SW1 DIMMING2/PWM2 DIMMING2/DIM1 DIMMING/PWM DIMMING/PWM1 VCC_A VCC_A/ VCCA1 VCC_A VCC_A/ VCCA1 3DEN-NC PWR-ON/OFF/ STB POWER ON/OFF/ STB1 12VS/ VCC2 12VS/ VCC3 - 12 -...
- Page 13 12VS/ VCC1 12VS/ VCC2 12VS/ VCC2 12VS/ VCC3 XP11：68pin ISP jacket Panel terminal jacket definition Main board terminal jacket definition Config illustration definition TER_CHOT ISP_RST TEND X0B_YCLK X0B_LC YDIO1 YDIO1 P2P12N X0B_1P P2P12P X0B_1N P2P11N X0B_2P P2P11P X0B_2N P2P10N X0B_3P P2P10P X0B_3N P2P9N...
- Page 14 P2P4N X0B_9P P2P4P X0B_9N P2P3N X0B_10P P2P3P X0B_10N P2P2N X0B_11P P2P2P X0B_11N P2P1N X0B_12P P2P1P X0B_12N P2P_LOCK P2P_LOCK MISO SPI_PANEL_MISO MOSI SPI_PANEL_MOSI SCLK SPI_PANEL_CLK SPI_Demura_CS T_nWR S_SCL I2C_CLK T_SCL S_SDA I2C_DATE T_SDA Ground Ground Ground Ground Ground No Connection VCC_PANEL 12V-Panel Power Supply...
- Page 15 Voltage VCC_PANEL 12V-Panel Power Supply Input Voltage XP7：Speaker jacket illustration definition Wire color 红 Left speaker positive wire 白 Left speaker negative wire 白 right speaker negative wire 红 Right speaker positive wire Ties,clamps and tapes: to show the positions where ties and clamps and tapes should be, for checking after servicing, Before disassemble the TV ,besure to take photes for the TV assembly example for 50A683FEVS.
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Page 16: Tv Boards Part List
2.2 TV boards part list Main board Boards function difference For Series Main chassis type 50A683FEVS 1. Lateral terminal and vertical terminal. NT72671 RSAG7.820.10588/RO 2. TCON part on the board. - 16 -... -
Page 17: Factory/Service Osd Menu And Adjustment
3. Factory/Service OSD Menu and Adjustment 3.1 Remote Control - 17 -... - Page 18 - 18 -...
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Page 19: Factory Osd Menu
3.2 Factory OSD Menu figure -1 - 19 -... - Page 20 Factory OSD menu list: if you want to learn more about TV, you’d better read it but would not adjust the value please. The Factory menu may be have difference for diverse market and customer. Take for example. HE55A7000EUWTS Options: Write keys: - 20 -...
- Page 21 Note: Check whether the Key information under the current Version is OK, if appears “NG” or such as following red surround irregular information then need rewrite the key. - 21 -...
- Page 22 Factory menu Description Remark White Balance data adjusting, different source White Balance has different WB values. Before adjusting, please change to desired source. channel init TV Produce signal preset, during the factory produce using. Option Items can choose Clear all initial the TV，EEPROM reset Soft version current software version information...
- Page 23 huangdao old Channel init Qing Dao TV Produce signal preset, during the factory produce using. huangdao new …… - 23 -...
- Page 24 "M" used in factory product. ToFAC Option "U" used in user state. LNB power 13/14;18/19;Power off Region North America country Country choose Logo Customer logo choose Language Language choose VCOM Panel voltage, UART On/off (when choose "on" then can serial port connect with Tool successfully) On/off PQ COM...
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Page 25: Software Upgrading
c. Close the OSD menu after 5 seconds. d. Restart the TV. e Also the Keys information must been checked, if appear “NG”, then must rewrite key code. 4. Software Upgrading 4.1 USB Upgrade Main software upgrade directly with USB The main software can be upgraded with USB disk. - Page 26 Firgure-1: Upgrading software Firgure-1 - 26 -...
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Page 27: Novatek Tool Upgrading
ID code 、 decipher& burn the Mboot program the EMMC flash first. then USB disk to upgrade the “ ”file. usb_NOVATEK_DEV_EU.bin Hardware connecting Connect the unit to your pc with Hisense USB-serial port cable. USB port connects to your PC and earphone port to TV’s CN7(earphone hole). As following. USB Connect to the Earphone port Connect to... - Page 28 4.2.1 Open the UART serial option UAR serial choose “on “ Menu: Factory-->Options–>UART–>on If finish the updating and data adjust UART serial, UART choose “off “ 4.2.2 Novatek USB-serial driver It’s the same as Mstar bebug Tool. If First use Mstar bebug Tool, you have to install drive software for bebug board. If your PC is Windows XP system: First install FTCUNIN.EXE of FTC100103(MSTAR) rar file in your PC.
- Page 29 Another: If your PC is Win7 system, you will have to install CDM20802_Setup_WIN7 rar file， and then open the software of SecureCRT in your PC. 4.2.3 Stop board serial connect with SecureCRT Run SecureCRT,printing information includes three status:Mboot\Supernova\no print information. Current steps: 1) Run SecureCRT.exe 2) TV power on.
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Page 30: Trouble Shooting
5. Trouble shooting 5.1 Troubleshooting for Remote Control Remote control does not work Try new batteries Replace battery Replace RC Replace remote control Check IR receiver Change Led & IR board Replace Led & IR BD Change Led & IR cable Replace Led &... -
Page 31: Troubleshooting For Function Key
5.2 Troubleshooting for Function Key Buttons does not work Check solder connections and see if Check switches any switches are stuck. Replace Key BD Check key board Check Key BD cable Change cable Replace main board - 31 -... -
Page 32: Tv Won't Power On
Work Replace Main Replace Main BD Power on Replace Panel (to contact Hisense tech support.) Replace Power BD Notice: MSD6586 Europe market： TV work normally indication led is no light. TV standby indication led is red. - 32 -... -
Page 33: Troubleshooting For Audio
5.4 Troubleshooting for Audio No sound Reconnect Check connecter Replace speaker wire Check speaker wire Replace speaker set Check speaker set Replace main board Power Supply Board - 33 -... -
Page 34: Troubleshooting For Tv/Vga/Hdmi Input
5.5 Troubleshooting for TV/VGA/HDMI input No picture on the screen Check Signal Source Make sure signal source is available Reconnect Check connect Replace cable Check cable Replace main board - 34 -... -
Page 35: Troubleshooting For Ypbpr Input
5.6 Troubleshooting for YPbPr input No picture on the screen Check Source work or not Check Source Device Reconnect Check connect Check Wires (Green Blue, Red) Replace wires Replace main board - 35 -... -
Page 36: Troubleshooting For Video Input
5.7 Troubleshooting for Video input No picture on the screen Check Source work or not Check Signal Source Reconnect Check connect Replace Cable/Wires Check Cable/ Wires Replace main board - 36 -... -
Page 37: Signals Block Diagram & Power Assign & Schematic Diagram
6. Signals Block Diagram & power assign & schematic diagram - 37 -... - Page 38 - 38 -...