FUTABA 12K Instruction Manual page 83

SUB-TRIM
The Sub-Trim function is used to set the servo
neutral position, and may be used to make fine
adjustments to the control surface after linkages
and pushrods are hooked up. When you begin to set
up a model, be sure that the digital trims are set to
their center position.
RTN
HOME/EXIT
RETURN
Sub-trim adjustment
(When the RTN button is pushed for one second, sub-trim is
reset to the initial value.)
*Before sub-trim adjustment, it is very important to adjust the
linkages at the control surface so that you do not use sub-
trim, except for very minute adjustments.
<Push Dial>
(The display screen is an example. The
screen depends on the model type.)
<Functions of Linkage Menu>
83