Brother DCP-J552DW, Service Manual

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1.3.23 Adjustment of the Vertical Print Lines/Ruled Lines (Maintenance mode 65)
<Function>
This procedure aligns vertical lines printed when the head/carriage unit travels from left to right.
If the head/carriage unit, main PCB, or engine-related parts are replaced, you need to make the
adjustment given below.
<Operating Procedure>
Adjustment of vertical print lines (same as B1 to B4 of ruled line adjustment)
(1) Press the [6] and [5] keys in this order in the initial stage of the maintenance mode. The
machine displays "MAINTENACE 65" on the LCD.
(2) Press the [1] key. The machine displays "PRINTING" on the LCD and prints out a vertical print
line pattern.
Upon completion of printing, "A NO. (1-9)" appears on the LCD.
(3) Check the A row, find which number block shows most indistinct vertical lines, and then enter
that block number.
The machine displays "B NO.(1-9)" on the LCD.
(4) Check the B row, find which number block shows most indistinct vertical lines, and then enter
that block number.
The machine displays "C NO.(1-9)" 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 machine displays "D NO.(1-9)" on the LCD.
(6) Check the (D) row, find which number block shows the most indistinct vertical lines, and then
enter that block number.
Vertical print line values are written to the machine, and the machine returns to the initial stage
of the maintenance mode.
Note If block numbers 1 or 9 are entered even once during adjustment, the machine shows
"PRINTING" on the LCD and prints the vertical alignment check pattern again. Go back to step (3)
and make adjustments again.
Adjustment of ruled lines
(1) On your PC, save a copy of "CR_BHmini13_Step.prn" to a USB flash memory or SD card. Use
"1.3.21 Printout of PRN/JPEG Files in Memory Card (Maintenance Mode 61)" in this chapter
to print test patterns on A4 or letter paper.
(2) Press the [6] and [5] keys in this order in the initial stage of the maintenance mode. The
machine displays "MAINTENACE 65" on the LCD.
(3) Press the [2] key. "A1 No.(1-9) 5" is displayed.
(4) Check the A1 that has been printed, find which number block shows the most indistinct vertical
lines, and then enter that block number. Then press the [SET] or [OK] key. The machine
displays "A2 No.(1-9) 5" on the LCD.
(5) Wait for the block number to appear on the LCD for confirmation in the same way. For each of
the printed (A2) to (A11) and (B1) to (B4), enter the number of the block that shows the most
indistinct vertical lines. Then press the [SET] or [OK] key.
(6) After entry of the block number for B4, "OK? 1.YES 2.NO" appears on the LCD.
Press the [1] key to save individual adjustment values and return the machine to the initial stage
of the maintenance mode.
If the [2] key is pressed, the machine will display "B4 No.(1-9)5" on the LCD and return to the
final input screen.
Note If the entered values for B1 to B4 are other than 4 to 6, go back to step (1) after completion of
step (5) and make adjustments again.