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Brother DP-525CJ Service Manual: 7.3.4.4. Fdd Write Error Rate Check; Fig. 3.27 Fdd Write Error Rate Check Display

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Troubleshooting

7.3.4.4. FDD Write Error Rate Check

(1) Without a diskette in the disk drive, select "D" from the Self Test menu. (If a serial
number has not been input before starting the test, the pop-up window will prompt for
the serial number; either enter the serial number and press RETURN, or press
RETURN to start the test.) The display as shown below appears:
Insert disk and press RETURN. Press CANCEL to exit.
(2) With paper set, insert a diskette that is not write-protected in the drive and press
RETURN. The screen message changes to "working" during formatting, and 0 is
displayed at PASS NO.; then the Write Error Rate check is started:
a)
The diskette is formatted.
b)
Data "DB6" is repeatedly written on both sides of a randomly designated track.
c)
The data written above is read (PASS NO. and TRACK NO. are printed if an
error occurs).
d)
Steps (b) and (c) are repeated for all tracks (should not be repeated twice for
the same track).
e)
1 is added to the PASS NO. counter.
f)
Steps (b) through (e) are repeated 500 times.
*****
FDD ERROR RATE CHECK
WRITE CHECK ERROR
PASS NO.
TRACK NO.

Fig. 3.27 FDD Write Error Rate Check Display

*****
TIMES
3-42
REPAIR
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