EDT EG32F40BCW 320x240 SED1335F

Truzzone · **Posted:** Thu Sep 30, 2004 15:27

Hi,
I have this display, but I haven't the schematic for wiring.
The photos [click on it for zoom]:

and:

Under the PCB are present a:
1 x Epson (Japan) SED1335Foa F97460210
1 x UM62256EM-70LL
4 x SANYO LC79401 7HC3
4 x SANYO LC79430 7GAU
What is the correct schematic for wiring with LPT, it is compatible with LCDInfo?
Sorry for my bad English.

Truzzone :?:

coorz · **Posted:** Thu Sep 30, 2004 15:52

Nice display

. Yes it works with LCDinfo. Wiring scheme here
Ofcourse you need to use the pin layout from YOUR display.

edit: you might need negative voltage for the LCD contrast.

Truzzone · **Posted:** Thu Sep 30, 2004 17:08

coorz wrote:

Nice display

. Yes it works with LCDinfo. Wiring scheme here
Ofcourse you need to use the pin layout from YOUR display.

I haven't still found the datasheet :cry:

coorz wrote:

edit: you might need negative voltage for the LCD contrast.

I'm newbie, what is it?
Thanks for your quickly response.

Truzzone

Truzzone · **Posted:** Thu Sep 30, 2004 17:21

I found this SIMILAR Datasheet here, is the same series of display (change only EG with EW), but I'm not sure of 100% if this datasheet is compatible with my display :cry:

Truzzone

coorz · **Posted:** Fri Oct 01, 2004 8:41

Looks ok to me. Why don't you email EDTC and ask them what the differences are?

Truzzone · **Posted:** Sat Oct 02, 2004 14:15

coorz wrote:

Looks ok to me. Why don't you email EDTC and ask them what the differences are?

Thanks for your response, I just send an email at EDTC, I'm waiting the response

Ciao by Truzzone

Truzzone · **Posted:** Mon Oct 04, 2004 14:39

I received the response from edt-europe with in attachment the same datasheet that I post before

The schematic is the same of before? or change it? :?:

Truzzone

coorz · **Posted:** Mon Oct 04, 2004 15:34

Use same schematic.

Truzzone · **Posted:** Mon Oct 04, 2004 16:20

I don't understand in the schematic where I connect the GND18/19/../25 in -5V in molex of power switch? :?:

Truzzone

[EDIT]
It is necessary to connect the 18-19 pin of the LCD1 with -25V? How to make -25V? :?:

[/EDIT]

coorz · **Posted:** Mon Oct 04, 2004 16:30

Truzzone wrote:

I don't understand in the schematic where I connect the GND18/19/../25 in -5V in molex of power switch? :?:

Truzzone

[EDIT]
It is necessary to connect the 18-19 pin of the LCD1 with -25V? How to make -25V? :?:

[/EDIT]

pin 18 to 25 on the printer-connector you should connect together and wire that to the metal of the connector, or to the BLACK wire of the PC molex connector.
-25v you 'll need to build a DC converter for that. Read this topic.

Truzzone · **Posted:** Mon Oct 04, 2004 16:50

coorz wrote:

pin 18 to 25 on the printer-connector you should connect together and wire that to the metal of the connector, or to the BLACK wire of the PC molex connector.
-25v you 'll need to build a DC converter for that. Read this topic.

If I don't connect the 18 and 19 pin on the parallel port, the lcd function with the default contrast? Or it need the -25V? :?:

Truzzone

coorz · **Posted:** Mon Oct 04, 2004 18:07

You must connect pin 18 to 25 to GROUND. Your LCD also works without the negative voltage for contrast, but it'll be very hard to see anything. At least you can wire it up and check if it is working or not. Then you can start working on the circuit for negative voltage.

LCDInfo.com

EDT EG32F40BCW 320x240 SED1335F

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