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USB operations option can not be used directly. It can be used for updating panel tool,
hw confi guration etc. 

In MB62 project there is only one software. From following steps software update 
procedure can be seen:

1. MB62_en.bin, mboot.bin and usb_auto_update_T4.txt documents should copy directly 

inside of a flash memory(not in a folder).  

2. Put flash memory to the tv when tv is powered off. 
3. Power on the and wait when the tv is opened. 
4. If First Time Installition screen comes, it means software update procedure is 

succesful. 

Problem: If TV is working, led is normal and there is no picture and backlight on the panel.

Possible couses: Backlight pin, dimming pin, backlight supply, stby on/off pin 

Backlight pin should be high in open position. If it is low, please check Q181 and panel 
cables.

Dimming pin should be high or square wave in open position. If it is low, please check 
S16 for Mstar side and panel or power cables, connectors.

Backlight power supply should be in panel specs. Please check CN705 for MB62, related 
connectors for power supply cards.

STBY_ON/OFF should be low for standby on condition, please check R1677.

Problem: CI is not working when CI module inserted. 

Possible couses: Supply, suply control pin, detect pins, mechanical positions of pins
CI supply shoul be 5V when CI module inserted. If it is not 5V please check 
CI_POWER_CTRL, this pin should be low.