Alignment Of Vertical Print Lines In Monochrome (Function Code 65) - Brother MFC640CW Service Manual

8.4.14 Alignment of Vertical Print Lines in Monochrome (Function code 65)

Function
This function allows you to align vertical lines printed in the forward and backward direction of the
head/carriage unit.
If the head/carriage unit or main PCB is replaced with a new one, you need to make the adjustment
given in this section.
NOTE: If the head/carriage unit is replaced with a new one, you need to make other adjustments in
addition. Refer to
Operating Procedure
(1) MFC820CW/640CW
Press the 6 and 5 keys in this order in the initial stage of the maintenance mode. Then press the
1 key.
DCP340CW
Enter 6, 5, and 1 in the initial stage of the maintenance mode 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.)
The machine displays the "MAINTENANCE 65" on the LCD and prints two sheets of check
patterns as shown on
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On the 1st sheet, two sets of vertical alignment check patterns in monochrome are printed for
600 dpi and 1200 dpi, each of which consists of #1 through #8 blocks. If the vertical alignment
is ON, #5 block (each in the 600 and 1200 dpi printouts) shows vertically aligned lines.
On the 2nd sheet, the vertical alignment check pattern is printed for 750 dpi.
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The "600DPI NO. (1-8)" appears on the LCD.
(2) On the 1st sheet, check the printed vertical alignment check patterns for 600 dpi in
monochrome and find which number block shows full alignment.
MFC820CW/640CW
If the block is other than #5, enter that block number by using the numerical keys.
DCP340CW
If the block is other than #5, enter that block number by using the
The "1200DPI NO.(1-8)" appears on the LCD.
(3) For 1200 dpi, perform the same operation as in step (2).
The "750DPI NO.(1-8)" appears on the LCD.
Chapter 6, Section 6.2.
page 8-34.
8 - 3 2
and Set keys.*
key several times to
and Set keys.*.
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