TM 1-1510-225-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
AVIONICS FLIGHT CHECKS (CONT)
( 1 ) P I L O T a n d C O P I L O T
AUDIO monitor switches -
OFF.
(2) AUDIO SPKR switch - On.
(3) HOT INTPH switch - On.
This will allow checking
operation of microphones by
speaking into them.
(4) Microphones - Check opera-
tion by speaking into them.
Speech should be heard over
speaker and in other headset.
(5) Audio control panel VOL
controls - Check for function
and adjust.
( 6 ) P I L O T a n d C O P I L O T
AUDIO monitor switches -
Turn on one at a time and
increase volume on appropri-
ate receiver, listening for
either radio reception or back-
ground noise then turn OFF.
(b) Transmitter selector switches (2)
- Check as follows:
(1) Transmit and receive on each
radio using all microphone
switches one at a time.
* 4. AM/FM (VHF/UHF) transceiver -
Check as follows:
(a) On/off switch - Depress. Self test
page will appear. When self test
is complete the control display
alpha page or the last display
page shown before system shut-
down will appear.
4-10
C1
K-7
