[sdiy] OT Roland W-30 displays

[Ullrich Peter]

Hi!

The W30 Service manual says that it is a LM240142 LCD (PN RL-15029487 from ROLAND).
If you need I could give you the LCD module pinout out of the schematics.
But I found no datasheet for the display.

Replacement displays are available here but very expensive:
http://www.vintageplanet.nl/pages/roland.html look for "LM240142"

Ciao
Peter


-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Neil Johnson
Sent: Monday, February 28, 2011 2:30 PM
To: Gordon JC Pearce
Cc: synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] OT Roland W-30 displays

Gordon,

> I picked up a W-30 at the weekend, but its display was intermittently
> scrambled and got worse and worse as time went on.  It appears to have been
> replaced with a different display, with some fairly rough soldering.  I
> suspect something on the display PCB is knackered.
>
> Can I just replace it with any 240x64 graphical LCD that uses the same
> controller, or is there something "magic" about it?

I don't believe there is anything special about the particular one in
the W-30.  As long as it has the exact same register API as the old
one then it stands a good chance of working.  Try it out and see what
happens!  At worst you'll get a blank display or garbled display.  Oh,
and the display driver in is EPROM, not on disk, so tricky to update.

Cheers,
Neil
-- 
http://www.njohnson.co.uk
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