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Brother DP-525CJ Service Manual: Fig.2.25 Cfl Backlight Circuit

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Power Supply for CFL Backlight
The CFL backlight circuit consists of the control circuit that turns ON/OFF the CFL and
the inverter PCB.
The ON/OFF status of the CFL is controlled by the CFLON terminal of the CBIC (#8).
The inverter PCB converts +5V to AC voltage to drive the CFL tube. The type of
inverter PCB differs according to the LCD.
Fig. 2.25 shows the CFL backlight circuit.

Fig.2.25 CFL Backlight Circuit




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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​