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Brother DP-525CJ Service Manual: Checks After Repair

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REPAIR
SERVICE MANUAL
Run the appropriate Self Test operation (from the software) for the suspected problem
before attempting any mechanical or electrical troubleshooting.
Supply voltage: Check the AC input voltage and DC supply voltage for all sections.
Make sure they meet specified voltage values.
Connectors: Check all connectors and make sure they are tight.
Fuses: Check for blown fuses (F1 and the thermo-fuse inside the AC adapter).
NOTE:
In the logic control circuit, it is difficult to isolate faulty points in areas connected tot he
CPU by the address bus or the data bus. If a suspected problem involves the address
bus or data bus, first check the solder bridge and the cut circuit pattern. If a faulty point
cannot be isolated, replace the peripheral devices or the PCB.
4.

Checks After Repair

After completing a repair, check to confirm that the trouble has been eliminated. Also,
record the troubleshooting procedures used for reference.
3-3
Troubleshooting

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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