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[Operation] regulates brightness in the normal operating status. You can
choose between [High], [Medium] and [Low] brightness intensities. Use the
SCROLL/SELECT knob to select a brightness level and press the SCROLL/
SELECT knob to save the seing.
[Standby] regulates the brightness in standby mode. You can choose
between [High], [Medium] and [Low] brightness intensities. Use the SCROLL/
SELECT knob to select a brightness level and press the SCROLL/SELECT knob
to save the seing.
[Auto Dim] automatically dims the display to the Low brightness level aer a
set time without the radio being used.
When the [O] option is selected, the display will be permanently lit with the
brightness selected under [Operation]. Press the SCROLL/SELECT knob to
save the seing.
16 Cleaning
To prevent the risk of electric shock, you must not clean the device using a wet
cloth or under running water. Prior to cleaning, disconnect the mains plug and
switch o the device!
You must not use scouring pads, scouring powder, or solvents such as alcohol
or petrol.
Do not use any of the following substances: Salt water, insecticides, solvents
containing chlorine or acids (ammonium chloride).
Clean the housing using a so, damp cloth. Do not use spirit, thinners, etc.;
you could damage the surface of the device.
Only clean the display with a so, coon cloth. If required, use a coon cloth
with small amounts of non-alkaline, diluted, water-based or alcohol-based
soap solution.
Gently clean the surface using the coon cloth.
17 Troubleshooting
If the device does not operate as intended, check the table below for information.
Symptom Possible cause/remedy
The device cannot be switched on. The device is not being supplied with power.
Connect the power supply unit correctly to the
socket and to the device.
No sound can be heard. Increase the volume.
The display does not switch on. Disconnect the device from the power supply
and then reconnect it.
Poor reception via DAB+/FM. Change the position of the antenna or the
DIGITRADIO 21 IR.