Alfa Romeo 156 GTA Owner's Manual page 71

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Each press (pulse) on
â ã
the or buttons
increases or decreases
by one unit. Keeping the
corresponding button pressed
obtains automatic fast increase
or decrease. When you are near
the required value, release
the control and complete
adjustment by single presses.
70
é
â
ã
ç
é
â
ã
ç
Return to previously
set screen, e.g.:
Return to menu screen