Brother MFC-J6510DW Service Manual page 344

5.1.4.19 Travel Check of the Head/Carriage Unit (Function code 63)
Function
This procedure moves the head/carriage unit to the center of its travel (Function code 63 + *).
Operating Procedure
(1) Press the 6 and 3 keys in this order in the initial stage of the maintenance mode.
The "SELECT 63?" appears on the LCD.
(2) Press the Black Start (Mono Start) key.
The "START 63" appears on the LCD.
(3) Press the * key.
The "HEAD ADJ" appears on the LCD.
After completion of head replacement or adjustment jobs, press the Stop/Exit key. The
head/carriage unit returns to the home position and then locks itself.
5-40 Confidential