Brother MFC-J3520 Service Manual page 313

Software correction for inclination/corrugation/ruled lines
(1) On your PC, save a copy of " Corrugate_BHM13.prn " into a USB flash memory or
SD card.
(2) Use Section 1.3.21 "Printout of PRN/JPEG Files in Memory Card (Maintenance mode
61)" to print a test pattern (refer to the figure below) on A4- or letter-sized paper.
Tip: The test pattern can also be printed by opening "Filedrgs" on your PC and
dragging and dropping the above file onto the Brother Maintenance USB
Printer driver icon.
(3) Check blocks B1 through B15 on the printed test pattern. If there is no block that
shows almost indistinct vertical lines, clean the CR encoder strip and go back to
step (2) to make adjustments again.
(4) Among the test patterns printed, check the D pattern.
If the number of the block that shows the most obscure red is 2, go to step (5).
If the number of the block that shows the most obscure red is 1 or 3, adjust the
inclination of the head/carriage unit, referring to
head inclination."
(5) Press the 6 and 5 keys in this order in the initial stage of the maintenance mode.
The "MAINTENANCE 65" appears on the LCD.
(6) Press the 2 key.
The "A1 No. (1-9) 5" appears on the LCD.
(7) Check the A1, find which number block shows the most indistinct vertical lines, and
then enter that block number. Then press the SET key.
The "A2 No. (1-9) 5" appears on the LCD.
(8) Wait for the block number to appear for confirmation in the same way. For each of
the printed A2, B1 to B15 and C1 to C3, enter the number of the block that shows
the most indistinct vertical lines. For the printed D, enter the number of the block
that shows the most obscure red. Then press the SET key.
(9) After entry of the block number for D, the "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.
Note: If the entered value for each of A1, A2, C1, C2 and C3 is other than 4 to 6, go
back to step (2) after completion of step (9), print software correction for
inclination/corrugation/ruled lines check pattern again, and then go to step (5) to
make adjustments.
Software Correction for Inclination/Corrugation/Ruled Lines Check Pattern
Chapter 4, Section 2.4 "Adjust
5-42
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