Furuno MARINE VHF RADIOTELEPHONE FM-3000 - Manual (Page 45)

36
6.Other Functions
6.2 Microphone Lock Function
The Microphone lock function electrically locks the [Y Y]/[Z Z]
and [16/9] keys on the supplied microphone. This prevents
accidental channel changes and accidental function access.
➥While pushing [16/9] on supplied microphone, turn power
ON to toggle the Lock function ON or OFF.
6.3 Display Backlighting
The function display and keys can be backlit for better visibil-
ity under low light conditions.
➥While pushing [HI/LO], rotate [CHANNEL] to adjust the
brightness of the LCD and key backlight.
• The backlight level is adjustable in 7 levels.
[Y]/[Z] [16/9]