Error code
C-F2
Meaning
Communication error between Sub PCB and touch panel / Touch key failure
Moderate
What to do
Why this happens
Possible causes include interrupted communication between sub and touch panel, a short or open circuit in the touch key, version mismatch between Sub PCB and Touch Micom, a short or open glass touch pattern, or an issue with connector CN701 on the Sub PCB.
SourceSamsung service manual