Roberts Radio RD4 - Manual (Page 6)

6
Display Screen
The radio includes a back lit LCD Display Screen.
The icons at the top of the screen form a custom display indicating
the status of the radio and any user settings.
The two-line alphanumeric display at the bottom of the screen can
show up to 16 characters on each line, and provide information
about the received stations.
Back Light
The Back Light illuminates the Display Screen, making it easy to
view in a dark environment.
1. When the Power button is pressed to turn the radio on, the
Display Screen will illuminate for five seconds.
2. When the Power button is pressed to turn the radio off, the
Display Screen will illuminate for a short period.
3. When a button is pressed the Display Screen will illuminate for
up to three seconds.
4. When the radio is powered externally, by connecting a suitable
external power supply (4.5 V DC) to the Power Supply Socket
on the radio, the Display Screen remains constantly illuminated.