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LAMP
To illuminate the display and keys:
Press [LAMP].
• If no other key is pressed, the light turns OFF
approximately 5 seconds after releasing [LAMP].
• Press any key (including [PTT]) other than [LAMP] while
the display and keys are lit to restart the 5-second timer.
• Press [LAMP] while the display and keys are lit to
immediately turn the light OFF.
To keep the light ON continuously:
Press [F], [LAMP].
• The light remains ON until you press [F], [LAMP] again.
LOCK FUNCTION
The lock function disables most of the keys to prevent
you from accidentally activating a function.
1 Press [F] (1 s).
•“ ” appears when this function is ON.
• The following keys cannot be locked:
[LAMP], [MONI/SQL], [PTT], [F] (1 s), [
] (POWER),
[F] then [LAMP] and [F] then [MONI/SQL].
2 Press [F] (1 s) to unlock the keys.