Brother MFC9100C Service Manual page 179

3.11 Alignment of Vertical Print Lines
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Function
This function allows you to align vertical lines printed in the forward and backward direction of the
carriage.
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Operating Procedure
(1) Press the 6 and 5 keys in this order in the initial stage of the maintenance mode.
The equipment prints out a set of vertical alignment check patterns which consist of No. 1 to
No. 9 lines for each of the 360 dpi, 720 dpi, and 1440 dpi.
If the vertical alignment is on, No. 5 line (each in the 360 dpi, 720 dpi, and 1440 dpi printouts)
shows vertically aligned lines as shown on the next page.
The LCD shows the "360DPI ADJUST" and "ENTER NO. (1-9)" alternately.
(2) Check the printed vertical alignment check patterns for the 360 dpi and find which number
line shows full alignment. If the line is other than No. 5, enter that line number by using the
numerical keys. In the example given below, No. 5 line is not aligned and No. 9 line is fully
aligned, so press the 9 key.
The LCD shows the "720DPI ADJUST" and "ENTER NO. (1-9)" alternately.
(3) For the 720 dpi, perform the same operation as in step (2).
The LCD shows the "1440DPI ADJUST" and "ENTER NO. (1-9)" alternately.
(4) For the 1440 dpi, perform the same operation as in step (2).
The equipment automatically returns to the initial stage of the maintenance mode.
NOTE: If No. 1 line or No. 9 line is fully aligned so that you press the 1 or 9 key in the above
procedure, go back to step (1) to confirm that No. 5 line becomes aligned.
Vertical Alignment Check Pattern—Alignment OFF
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