sry i havent updated my thread about what i have done to solve the issue.
For the magenta issue, i have found the TCR value for magenta was 0. removed the starter and installed them back again ( Distributed them properly) , cleaned the sensor . The Value increased back to 6%. but the bottle was still empty , so performed trouble reset and it was back to full .
For Black , The drum was the issue , swapped it and the issue swapped. The screws in the drum cap was loose and the plastic was not centered. adjusted it perfectly in the middle and the issue was solved.
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