J.P. Instruments EDM-730 Pilot's Manual page 17

The STEP and LF buttons control all functions of the EDM. The term
tap denotes pressing a button momentarily. The term hold denotes
pressing and holding a button for five seconds or longer.
STEP Button - Primary functions

In the Automatic mode, tapping the STEP button will change to
the Manual mode. Subsequent taps of the STEP button will
display the next parameters in the sequence.

In the LeanFind mode tapping the STEP button will terminate
the LeanFind mode and change to the Automatic mode.
STEP Button - Secondary functions

In the Manual mode, holding the STEP button will display the
previous parameters in the sequence (rapidly backwards).

In the Pilot Program Mode, tapping the STEP button will
generally advance to the next item in the list.

When an alarm is displayed, tapping the STEP button will
prevent that alarm from appearing for the next ten minutes.

When an alarm is displayed, holding the STEP button until the
word OFF appears, prevents that alarm from appearing for the
remainder of the flight.
LF Button - Primary functions

In Automatic or Manual modes, tapping the LF button will
change to the LeanFind mode.

In the LeanFind mode, holding the LF button after peak EGT is
found will display peak EGT.

In Automatic or Manual modes, holding the LF button for three
seconds will toggle between Percentage and Normalize views.
EGT Percentage view
is ON.
(NRM icon off)
For Your Safe Flight
EGT Normalize View
hold LF button
is ON.
for 3 seconds
(NRM icon on)
Page 17