Help with LCD identification please?

[Mark Jones]

Hi, a friend gave me a graphics LCD module from an 9-year old copying machine.
It appears to be a 640x240 STN blue/white CCFL unit. I've disassembled it trying
to find some kind of identifiable markings, but have had little luck. If anyone
could assist me in locating a datasheet, pin-out, or even a similar model, I
would be most grateful. Here is everything I have on it:

Little white sticker on rear:

EDMGU14BCF
3128A

* LCD connector is a 17-conductor ribbon.
* Opening the LCD module reveals an outlined "M" logo printed on the PCB's along
with PC-U951B and PC-U148A, and GCMK-G2X and NCMK-M1X.
* Flipping the LCD over reveals a few discretes and two chips: a KA324D (14 SOIC
single-rail op amp x4) and a Panasonic 2N1EMA (14 SOIC, unknown, cannot match
datasheet.)
* Printed near the edge of the glass itself is: PLH6-BZE (I think it's a Z.)

I can put up some photos if needed. Thanks very much for any help.

 

[Mark Jones]

Hi, a friend gave me a graphics LCD module from an 9-year old copying machine.
It appears to be a 640x240 STN blue/white CCFL unit. I've disassembled it trying
to find some kind of identifiable markings, but have had little luck. If anyone
could assist me in locating a datasheet, pin-out, or even a similar model, I
would be most grateful. Here is everything I have on it:

Little white sticker on rear:

EDMGU14BCF
3128A

* LCD connector is a 17-conductor ribbon.
* Opening the LCD module reveals an outlined "M" logo printed on the PCB's along
with PC-U951B and PC-U148A, and GCMK-G2X and NCMK-M1X.
* Flipping the LCD over reveals a few discretes and two chips: a KA324D (14 SOIC
single-rail op amp x4) and a Panasonic 2N1EMA (14 SOIC, unknown, cannot match
datasheet.)
* Printed near the edge of the glass itself is: PLH6-BZE (I think it's a Z.)

I can put up some photos if needed. Thanks very much for any help.

Anyone? Is this an OEM/custom part? Matsushita LCD's have close part numbers
such as EDMGR25KAF but no match. I also found a datasheet for an EDM240128-10 (
http://www.datasheetarchive.com/datasheet.php?article=1405446 ) but still this
is little help. Thanks again.

 

[Gary Tait]

Anyone? Is this an OEM/custom part? Matsushita LCD's have close part
numbers
such as EDMGR25KAF but no match. I also found a datasheet for an
EDM240128-10 (
http://www.datasheetarchive.com/datasheet.php?article=1405446 ) but
still this is little help. Thanks again.

I bet it is an OEM part number. There has to be controller chips, which
by luck, are COB/COG, potted, ground, or house numbered.

 

[Mark Jones]

I bet it is an OEM part number. There has to be controller chips, which
by luck, are COB/COG, potted, ground, or house numbered.

Hi Gary, I was simply hoping for a cheap experimentation LCD but it's not
panning out that way. For a controller, this module was plugged into a board
containing an H8S HD6412350F20 uC and RAM if that helps. I cannot tell what the
silicon is on the glass, and cringe at the thought of reverse-engineering any
multi-layer PCB's.

Here are some quick pics of the LCD:
http://heliosstudios.net/temp/lcd/

There's also a datasheet for the KA324D:
http://heliosstudios.net/temp/lcd/KA324D.pdf

And the EDM240128-10 similar datasheet:
http://heliosstudios.net/temp/lcd/EDM240128-10.pdf

Thanks for looking.

 

[Mark Jones]

Anyone? Should I just pitch it?