Textron Cessna 172R - Page 420

SECTION
9
-
SUPPLEMENTS
SUPPLEMENT
9
-
FAA
APPROVED
CESSNA
MODEL
172R
UPPER
BUTTON
Figure
1.
Clock/OAT
Gauge
SECTION
4
NORMAL
PROCEDURES
TEST
MODE
The
unit
may
be tested
by holding
the
SELECT
button
down
for
three
seconds.
Proper
operation
is
indicated
by
the
display
88:88
and activation
of
all
four
annunciators.
O.A.T.
/
VOLTMETER
OPERATION
The
upper
portion
of
the
LCD
window is
dedicated
to
O.A.T.
and
voltmeter
operations.
The
voltmeter
reading
is
preselected
upon
startup
and
is
indicated
by
an
“E”
following
the
display
/
reading.
Pushing
the
upper
control
button
will
sequence
the
window
from
voltage
to
fahrenheit
(“F”)
to
centigrade
(“C”),
and
back
again
to
voltage.
S9-4
Feb
28/97
All manuals and user guides at all-guides.com