Epson TP1 - Manual (Page 61)

Operation 2. TEACH Mode
TP1 Rev.5 51
(3) The following screen appears.
Move the cursor to the joint to calibrate. Press the < →> key to select the joint and
press the <F2> key.
< →> key : Joint selection
< ←> key : Joint selection reset
The following screen appears when selection Joint #4 and Joint #3 is selected
automatically.
(4) The following screen appears.