No touch focus button for 50H71 Toshiba

Hi I am having convergence issues with my Toshiba 50H71 tv.  I have gone into Service Mode to make adjustments.  While things are improving, they are still far from perfect.  When I finish, the TV service mode asks me to press the Touch Focus button. Problem: there is no Touch Focus button on this model TV!!!  It is also not on the remote.   How do I press a button that does not exist? Thanks

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