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Brother DP-525CJ Service Manual: Carriage Motor Control; Fig. 2.10 Carriage Motor Drive Circuit

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THEORY
Electrical
6.2.

Carriage Motor Control

The carriage motor control circuit is shown in Fig. 2.10. +24 VDC is supplied to the
motor through connector CN3, pin 5. Motor phases A, B, C, and D are driven by the
CBIC (#8) through pins 150 - 153, respectively. The outputs of the CBIC turn darlington
transistors Q1 - Q4 on and off, which in turn affect the motor phases.
Fig. 2.10 Carriage Motor Drive Circuit
2-12
SERVICE MANUAL

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  • brian aaron Jan 27, 2017 03:48:
    1-26-2017
    ​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​uno.com