Amada HFA-250 Operator's Manual page 78

Displayed contents of item field
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Password entry field
1
Enters the password to open the maintenance display. This field is
provided for sole use by AMADA. Do not operate on this field by
yourself.
Function of function key
F4 (↵) key: Pressed to return to the station data setup display. If you
have opened the PASSWORD display, press the key to return to the
station data setup display.
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