Brother MFC-J6920DW, Service Manual

Page: 312 / 365

5-41 Confidential
1.3.23 Adjustment of Vertical Print Lines/Software Correction for Inclination/
Corrugation/Ruled Lines (Maintenance mode 65)
< Function >
This procedure aligns vertical lines printed in the forward and backward directions of
the head/carriage unit.
If the head/carriage unit, main PCB ASSY, or engine-related parts are replaced, you
need to make the adjustment given below.
< Operating Procedure >
Adjustment of vertical print lines
(1) Press the
6 and 5 keys in this order in the initial stage of the maintenance mode.
The "MAINTENANCE 65" appears on the LCD.
(2) Press the 1 key. The machine displays the "PRINTING" on the LCD and prints the
vertical alignment check pattern (refer to the figure below).
Upon completion of printing, the "A NO. (1-9)" appears on the LCD.
(3) Check the (A) row, find which number block shows the most indistinct vertical lines,
and then enter that block number.
The "B NO. (1-9)" appears on the LCD.
(4) Check the (B) row, find which number block shows the most indistinct vertical lines,
and then enter that block number.
The "C NO. (1-9)" appears on the LCD.
(5) Check the (C) row, find which number block shows the most indistinct vertical lines,
and then enter that block number.
The "D NO. (1-9)" appears on the LCD.
(6) Check the (D) row, find which number block shows the most indistinct vertical lines,
and then enter that block number.
The machine saves the adjustment values and automatically returns to the initial
stage of the maintenance mode.
Note: If the 1 or 9 key is pressed during the above procedure, the machine shows
"PRINTING" on the LCD and prints the vertical alignment check pattern again.
Go back to step (3) and make adjustments again.
 Vertical Lines Check Pattern