Brother MFC640CW Service Manual page 183

In the following procedure, key names enclosed in parentheses apply to the MFC820CW.
(6) Enter the measured value (in units of 0.1 mm) multiplied by 10.
(Example) Left: 10, Right: 13
MFC820CW/640CW
In this example, press the 1, 0, Menu/Set (OK), 1, 3, and Menu/Set (OK) keys.
DCP340CW
In this example, enter 1, 0, 1, and 3 by using the
(*To enter a numerical code on models having no numerical keypad, press the
display the numerical code to be entered and then press the Set key. Repeat this operation for each
numerical code.)
(7) Upon completion of the entry, the machine automatically returns to the initial stage of the
maintenance mode.
Go back to step (2) and print out the margin check pattern again.
(8) Measure the left and right margins on the printout.
If both margins are within the range from 0.9 to 1.1 mm, the adjustment is completed.
TIP: To reset the newly entered values to defaults, press the Black Start key or Mono Start
key.
and Set keys.*
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key several times to
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