Brother DCP Series, Service Manual

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(7) Next, adjust the 1,200 dpi left margin. Enter the measured margin value (in units of 0.1
mm) multiplied by 10.
In the example on step (1) above, the measured margin value of the left margin is 2.9
mm, so enter [2] and [9], and then press [SET] or [OK] .
The machine displays "RIGHT2 :30" on the LCD.
(8) Next, adjust the 1,200 dpi right margin. Enter the measured margin value (in units of
0.1 mm) multiplied by 10.
In the example on step (1) above, the measured margin value of the right margin is 3.2
mm, so enter [3] and [2], and then press [SET] or [OK].
Return to the initial stage of the maintenance mode.
(9) Print the margin check pattern again, using the procedure step (3) of "Printing the left,
right and bottom margin check pattern".
(10) Measure the left and right margins on the printed pattern.
If the left and right margins are within the range from 2.9 to 3.1 mm, the adjustment is
completed.
Adjusting the bottom margin
(1) Measure the bottom margin on the printed check pattern 1.
(Example) Bottom margin: 3.2 mm
If it is within the range from 0.0 to 5.0 mm, no adjustment is required. If not, go to step
(2).
(2) If the bottom margin is out of the specified range, enter [6] and [6].
The "Select 66?" appears on the LCD.
(3) Press the [Mono Start].
The "MEDIA SENSOR ADJ" appears on the LCD.
(4) Press the [#] key to display "BOTTOM :30."
(5) To adjust the bottom margin, enter the measured bottom margin value (in units of 0.1
mm) multiplied by 10.
In this example, the bottom margin measured in step (1) is 3.2 mm, so enter [3], [2],
and [SET] or [OK].
The machine returns to the initial stage of the maintenance mode.
(6) Using the procedure step (3) of "Printing the left, right and bottom margin check
pattern", print the margin check pattern again.
(7) Measure the bottom margin on the printed pattern.
If it is within the range from 0.0 to 5.0 mm, the adjustment is completed.
Note To reset the correction values newly entered in the above procedure, enter the [6],
[6], [Mono Start], [8], [9], [5] and [4] keys in this order in the initial stage of the maintenance
mode. The machine shows "PARAMETER INIT" on the LCD and returns to the initial stage
of the maintenance mode.