Alpine TMI-M990 - Manual (Page 42)

Setup
38
- EN
Setting the Illumination Brightness
When the lights are switched on at night etc., the switch and Input indicator brightness of the TMI-
M990 can be dimmed.
Setting item: DIMMER
Setting content: ON/OFF/AUTO
ON:
The switch and Input indicator brightness of the
TMI-M990 change to the value set in “Adjusting the
Illumination Level” (refer to page 39).
OFF: The illumination brightness does not change.
AUTO*: When the car lights are switched ON, the switch and
Input indicator brightness on the TMI-M990 become
dimmer. The brightness changes to the value set in
“Adjusting the Illumination Level” (refer to page 39).
* Can only be set when connected to an IONBUS compatible head unit. Does not
operate when the head unit illumination cable is not connected.