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Problem: CI is not working when CI module inserted. 

Possible causes: Supply, supply control pin, detect pins, mechanical positions of pins

CI supply should be 5V when CI module inserted. If it is not 5V please check CI_POWER_CTRL, this pin 
should be low.  

Please check mechanical positions of CI module.

Detect ports should be low. If it is not low please check CI connector pins, CI module pins and 3V3_VCC on 

MB60.

Problem: LED blinking, no other operation

This problem indicates a short on Vcc voltages. Protect pin should be logic high while normal operation. 
When there is a short circuit protect pin will be logic low. If you detect logic low on protect pin, unplug 
the TV set and control voltage points with a multimeter to find the shorted voltage to ground. 

Problem: LED or IR not working

Check LED card supply on MB60 chassis.

Problem: Keypad or Touchpad is not working

Check keypad supply and KEYBOARD pin on MB60.