Brother MFC-J435W - Manual (Page 9)

General setup
5
1
Mode Timer
1
The machine has three temporary mode keys
on the control panel: FAX, SCAN and COPY.
You can change the amount of time the
machine takes after the last Scan or Copy
operation before it returns to FAX mode. If
you choose Off, the machine stays in the
mode you used last.
a
Press Menu.
b
Press a or b to choose
General Setup.
Press OK.
c
Press a or b to choose Mode Timer.
Press OK.
d
Press a or b to choose 0Sec, 30Secs,
1Min, 2Mins, 5Mins or Off.
Press OK.
e
Press Stop/Exit.