Lock; Dimmer - Yaesu FT-991A Operating Manual

Basic Operation: Receiving on Amateur Bands
You may lock the setting of the Main Tuning Dial knob ( for VFO-A frequency tuning ) to prevent accidental frequency
change.
Main Tuning Dial Knob Lock
To lock the Main Tuning Dial knob, press the LOCK
button that is located to the right of the Main Tuning
Dial knob.
 "Lock" in the LED indicator area will light up
To unlock the Dial setting, and restore normal tuning,
press the LOCK button once more.
The illumination level of the TFT display and LED indicators ( above the Main Tuning Dial knob ) , may be adjusted via
Menu items 007 and 008.
To adjust the illumination level:
1. Press the MENU button to enter the Menu mode.
2. Rotate the MULTI knob to select Menu item "007
DIMMER LED" ( for LED indicators ) or "008 DIM-
MER TFT" ( for TFT display ) .
3. Touch [ SELECT ] on the LCD then rotate the
MULTI knob to select the desired illumination level.
4. Touch [ ENTER ] on the LCD, then touch [ BACK ]
on the LCD or press the MENU button to save the
new setting and exit to normal operation.
FT- 991 Operating Manual

LOCK

DIMMER

LOCK Button
LOCK Indicators
MENU Button
MULTI Knob
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