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Brother DP-525CJ Service Manual: Adjusting The Ca Unit; Adjusting The Carriage Home Position

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Adjusting the CA Unit

Any time the CA motor or the timing belt is removed or replaced, the carriage friction
and home position should be checked and adjusted as required. Perform the following
adjustments with an ink cartridge installed.
Electro-Static Discharge Hazard
Wear an anti-static wrist strap with ground wire to prevent damage to sensitive
electronic components.

Adjusting the Carriage Home Position

(1) Remove all covers and remove the printer mechanism.
(2) Install a wiring harness to connect the carriage motor and the home position sensor
to the main PCB.
If an extra harness is not available, you may simply remove the two screws
securing the printer assembly to the bottom cover and raise the mechanism to
access the carriage motor screw; however, you MUST place a non-conductive
material (such as paper) between the printer and other electrical components -
especially the power supply PCB - to avoid grounding damage to the equipment.
(3) Loosen the CA motor screw.
(4) Turn on all power and from the Main Menu, press CODE + SHIFT + BACKSPACE,
then select "B" from the Self Test menu to start the CR (Carriage Reset) test.
(5) Manually move the carriage to the right end.
(6) While holding the carriage at the right end, press the UP arrow key to turn the
motor on, and verify that the motor is in phase AB (from the display).
(7) Slowly rotate the motor to the point of least vibration (motor noise), hold the motor
at this position, and retighten the screw.



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  • brian aaron Jan 27, 2017 03:48:
    ​I have a brother dp 540cj and it has a built in diskette drive.
    I have a ibm thinkpad latop. I connected a Memorex external usb floppy drive to the ibm thinkpad laptop. i'm copying 3 files from the ibm thinkpap (notepad) to the square 1.44 mb diskette. no problem, the 3 files were copied to the diskette.
    ​I turn on the brother dp 540cj, select file manager, insert the square diskette. the brother dp 540cj open only the file names on the disk. I try to open word text on either of the 3 files on the disk and the brother dp 540cj don't open the word text in any of the 3 files. I have been trying for several days to open the word text on the files using the brother dp 540cj and don't have any further instructio​ns for this problem. I tried saving the file names to all coding - Unicode, ansi utf-8 and can't fix the electronic problem.
    m​y email address is snowwash@j​