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Brother DP-525CJ Service Manual: Sram (#7) Access; Fig. 2.22 Example Of Control Signal Timing Chart; Table 2.2 Table Of Lcd Modules

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SERVICE MANUAL
9.1.
LCD Control
The CBIC (#8) controls the LCD control signals and the SRAM access.
The display data written to the SRAM (#6) is read by the CBIC (#8) in regular intervals,
converted into the 4-bit parallel data by the CBIC (#8) and then sent to the LCD module.
Black and white of the display data are inverted by connecting the R55 (#8 REV
terminal). Connect the R55 if the transmission type LCD is used.
The timing of display control signals differs according to the LCD type. The timing is set
by the status of the DMODE (3:0) terminal in the CIBC (#8) in the reset state and by the
setting in the program after the reset is canceled. An example of the control signal
timing chart is shown in Fig. 2.22.
9.2.
LCD Module
The LCD modules used in the respective models are shown in Table 2.2. The control
signal timing and drive voltage (VEE) differ according to the LCD module.
Specification
Model Name
DP-525CJ
LW-800ic
DP-530CJ
LW-810ic
LW-810icBL
DP-540CJ
DP-550CJ
LW-840ic
Note: VEE voltage is the values measured at connectors CN7 and CN8.

Fig. 2.22 Example of Control Signal Timing Chart

Table 2.2 Table of LCD Modules

No. of Horizontal
No. of
Dots
Vertical Dots
480
480
480
640
640
Panel Type
64
Reflective
128
Reflective
128
Transflective yes
400
Reflective
400
Transmissiv
e
2-21
THEORY
Electrical
Backlight VEE (V)
no
–17.5 to –14.5
no
–17.5 to –14.5
–17.5 to –14.5
no
+22 to +30
yes
+26 to +37

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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