Thomson and TCL LED TV How to enter service mode, software update, Power and backlight inverter circuit diagram

How to enter service mode, software update, Power and backlight inverter circuit diagram Thomson and TCL LED TV  Echom 19AE, Echom 22AE and Echom 23AE [19, 22 and 23 inch LED TVs)
Thomson T19E27U, ThomsonTLC MT27S-AP
TCL MT27S-AP, TCL T19, TCLT22, TCL T24E27, TCL T29V
Factory Menu covers all indispensable functions during manufacture such as White Balance Adjustment, Shop Init, NVM  reset,DesignMenu1,DesignMenu2 e.g., while the items under DesignMenu1 and DesignMenu2 is exclusively used by R&D engineer, anyone else shouldn’t change the settings in the menu. When you wish to learn the product information like project ID, model name, you can access to
DesignMenu1. In addition, in Hotel Menu, we also provide a great deal of useful functions for specific applications in hotel.
Factory Menu
Accessing
a. In the first place, press Menu button of remote control, then select Contrast item of Picture submenu. 
Finally, press 9, 7, 3, 5 consecutively.
b. When the FAC HOTKEY item of Factory Menus enabled (ON), press Return button of remote control.
HOTEL MENU
Accessing
a. Hotel Menu(enable)item is enabled(on)
b. press Menu button of remote control, then select Contrast item of Picture submenu. Finally, press 9, 7, 1, 5 consecutively.
The steps of debugging
Device
Color Analyzer CA-210. 
Video Pattern Generator Chroma2329. 
Color TV Pattern Generator PM5418, VGA cable, AV cable(RCA),YPBPR(RCA) cable.
Chroma2329 Fluke5418 CA-210
Steps of debugging [Troubleshooting]
According to the requirement of order take the below steps to finish the appropriate settings.
A enter the Factory Menu, enable HOTKEY
B Check the version of software, release date displayed at the bottom of Factory Menu. If the information is correct, you can ignore step C and D.
C Enter Factory Menu, choose DESIGNMENU1->PROJECT ID, choose corresponding Project ID number of the product.
D Return to DesignMenu1, check the Product model.
E Choose Factory Menu-> NVM RESET and press and wait until prompt OK appears.
F Restart the set
G According to the requirement of order, set the items of Hotel Menu etc.
H After aging under normal temperature, adjust white balance.
I Choose Factory Menu > SHOP INIT and press button of remote control to initialize the set.
Note: after step I (execute SHOP INIT), Hotel Menu will be disabled by default.
Therefore, if order requires hotel function, it is necessary to enable hotel function by set Factory Menu > DesignMenu2 >HOTEL MENU ENABLE to ON
White Balance adjustment (Manual)
Before adjustment, you must ensure Color Analyzer has been calibrated. Only AV1, YPBPR, VGA , HDMI 1 need to be adjusted. It is necessary to adjustment HDMI 1 first.
Signal and generator
The pattern of the signal should be used are White (Chroma2329 pattern113) and Grey (pattern 114).The format of signal are respectively 720p for HDMI1 (Chroma2329 Timing 69), NTSC for AV1 (Chroma2329 Timing 37),1024×768@60Hz
Steps of adjustment
1) enter the factory menu->WB, select source HDMI 1 and COLORTEMP normal.
2) input white signal in 720p format
3) change R Gain and B Gain to make sure the value of color coordination equal to (x, y)
In addition to select COLORTEMP COOL/WARM, the adjustment method of COOL and WARM color temperature is same with that of NORMAL.
Chip list of software programming before SMT
Following chip must be programmed before SMT by ALL-11 or other tools.
1 U401 Flash  W25Q32 -13-W25Q32-BVB  Main software;HDMI KEY;EDID SO-8
Note
1) The software for U401 can be program using ISP tool.
2) Every set has its unique HDCP key which is purchased from suppliers or HDCP certification authority. Check HDCP function in the process of production.
3) Once in a while, the software of main board may be upgraded. Please pay attention to use the latest software before production.
SMPS and BackLight inverter schematic
Software upgrade through USB disk
1) Please ensure the software you are using has a correct file name TCL_MT27_UPDATE.bin, then copy it to the root directory of a USB disk.
2) Insert the USB disk to the USB socket of the set for which you are going to upgrade program.
3) Enter the Factory Menu (you can choose either a or b way below)
a. In the first place, press Menu button of remote control, then select Contrast item of Picture submenu. Finally, press 9, 7, 3, 5 consecutively.
b. When the Factory hotkey item of Factory Menu is enabled (ON), press Return button of remote control.
4) Select USB UPG item of DesignMenu2 submenu, press buttonof remote control, a pop menu will appear prompting whether start upgrade or not. Press Yes to start upgrade, press No to cannel. 
Wait patiently until the set restart automatically after upgrade.
Do not cut off the power supply during the process.
Check software version, release date and Project ID
After upgrading, sometimes you may not certain whether the new software has been successfully updated or not. In this case, you can check the software version and release date in Factory Menu to make sure the success of upgrading. In addition, for the convenience of software management, many models of same chassis may share a same software, but are allocated with different Project ID.
In another words, every model has its unique Project ID. 
Obviously, Both software version and Project ID are highly critical to ensure the set work properly. Therefore, after upgrading software, it is recommended  you to check these information by following method.
1) Enter the Factory Menu (you can choose either a or b way below)
a In the first place, press Menu button of remote control, then select Contrast item of Picture sub-menu. Finally, press 9, 7 3, 5 consecutively.
b. When the HOTKEY item of Factory Menu is enabled (ON), press Return button of remote control.
2 Check the version of software, release date displayed at the bottom of Factory Menu. If the information is correct, you can ignore step 3.
3 Choose DesignMenu1->PROJECTID, choose corresponding Project ID number of the product (Please refer to the description in BOM about Project ID number).
4 Choose Factory Menu and press OK button of the remote. Next, select NVM RESET and press and wait until prompt OK appears.
Choose SHOP INIT and press button of remote control to initialize the set.
Note: after step I (execute SHOP INIT), Hotel Menu will be disabled by default
Therefore, if order requires hotel function, it is necessary to enable hotel function by set Factory Menu > DesignMenu2 > HOTEL Menu enable to ON.
6) Restart the set.
If the resolution of the panel of your set is 1366×768(HD panel), you can press 062598,Menu, and Number(HD panel projectID) of remote control in series after turning on.
If the resolution of the panel of your set is 1920×1080(FHD panel), you can press 062598,Menu, and Number(FHD panel projectID) in series after turning on.
If you can see the picture at this time, please recheck the project ID again. If the project ID is still wrong, correct it reference to above description.