Cessna 182T 2001, Pilot Operating Handbook

Page: 210 / 254

SECTION 7 CESSNA
AIRPLANE & SYSTEMS DESCRIPTION MODEL 182T
Inputs to annunciator come from each fuel transmitter, low oil
pressure switch, the vacuum transducers and the alternator control
unit (ACU). Highly reliable individual LED bulbs illuminate each
message. Illumination intensity can be controlled by placing the
toggle switch to either the DAY or NIGHT position.
The annunciator panel can be tested by turning the Master
Switch ON and holding the annunciator panel switch in the TST
position. All amber and red messages will flash until the switch is
released.
NOTE
When the Master Switch is turned ON, some annunciators
will flash for approximately 10 seconds before illuminating
steadily. When the annunciator panel switch is toggled up
and held in the TST position, all annunciators will flash until
the switch is released.
MASTER SWITCH
The master switch is a split rocker-type switch labeled MASTER,
and is ON in the up position and off in the down position. The right
half of the switch, labeled BAT, controls all electrical power to the
airplane. The left half, labeled ALT, controls the alternator.
PRIOR TO TURNING THE MASTER SWITCH ON
OR OFF, STARTING THE ENGINE OR APPLYING
AN EXTERNAL POWER SOURCE, THE AVIONICS
MASTER SWITCH SHOULD BE TURNED OFF TO
PREVENT ANY HARMFUL TRANSIENT VOLTAGE
FROM DAMAGING THE AVIONICS EQUIPMENT.
7-36 Apr 30/01