Sir it's a common alarm for any ATC related issue,it may be for ATC cam sensor ,tool clamp sensor,tool declamp sensor,ATC motor BRAKE issue overshoot or under shoot Or may be for MEMORY bit updatation issue... It's better to check logic and find out the alarm path then clear it.
If its not same both side then you have to shift X axis reference position.if 60 micron +ve observe one side then 30 micron you have to shift X axis reference position...Then again check it will come same In both side.
SIR ASKING ABOUT 1.TOOL UNCLAMP BUTTON NOT WORKING 2.M73 NOT WORKING IN THAT CONDITION you want to declamp tool then you have to check tool declamp valve function -- If ok then short output of that valve to declamp or manually declamp tool by press valve If valve not ok then it's not possible to declamp tool