190-01115-01 G3X/G3X Touch Installation Manual - GDU 37X Config and Post Install Checkout
Rev. AC
Page 33-42
7. Go to the Main page in configuration mode and verify the proper TRIM ACTIVITY if the Pitch
servo is connected to an auxiliary trim motor.
a) Center the elevator trim switch to input no TRIM command. Verify the elevator trim switch
is not moving. Verify the Pitch servo is properly indicating no trim activity.
b) Use the elevator trim switch to input a nose up TRIM command. Verify the elevator trim
switch properly moves for nose up trim. Verify the Pitch servo is properly indicating NOSE
UP trim activity.
c) Use the elevator trim switch to input a nose down TRIM command. Verify the elevator trim
switch properly moves for nose down trim. Verify the Pitch servo is properly indicating
NOSE DOWN trim activity.
d) If the elevator trim response is reversed, go to the AP CONFIG page and change the pitch
servo TRIM MOTOR DIRECTION to REVERSE, then repeat step all of step 7.
e) Finally, verify the electric trim motor responds in the proper directions using the TRIM UP
and TRIM DN softkeys on the AP CONFIG page.
