Table 2-5. Function of Controls and Indicators --Continued
FUNCTION OR INDICATION
SERVICES SUB-MODULE (figure 1-25)-Continued
Lamp TEST SWITCH-
Test the lamps in the switchlight units
installed in services panel assembly
When energized, silences the audible
alarm and causes the ALARM DISPLAY
indicators to remain continuously on
during test of the alarm system.
Used to test the alarm system. When
energized, the ALARM DISPLAY indi-
cators flash on and off and the audible
ENGINE DC Switch-
Energizes relay XK1 in the engine dc
115 VAC 400 HZ
Energizes the 115v ac, 400 Hz circuit
used for excitation of the EXHAUST
GAS TEMP indicator (38, figure 1-24).
INST DC Switch-
Energizes relay XK2 to apply 117v ac,
60 Hz power to the six dc power supply
units in panel 4A12.
CONSOLE DC Switch-
Used to energize the dc power supply
assembly in Unit 1.
26 VAC 400 HZ
Used to energize the 26v ac, 400 Hz
power supply in Unit 1.