Noritake GU256X64-W376 - pinout, what supply voltage
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Author:  RayeR [ Sun Nov 13, 2011 1:25 ]
Post subject:  Noritake GU256X64-W376 - pinout, what supply voltage

I got this nice VFD and I'm looking for pinout and how to make it alive. Unfortunatelly there's any tech. spec. about this model. I already found datasheets for GU256X64-332, 355, 372 but my power supply connector has different pinout:
1 - GND
2 - +another supply input ?
3 - +5V for logic
this is flipped against 332, 355, 372 and even pin 2 is evidently connected somewhere because there's PCB trace starting with T4A fuse but I don't know what voltage I should connect here. There's also small transformer on board so I gues it should have step-up for tube driver included.
When I put +5V to pin 3 it takes about 15mA and when applied to pin 2 it draws only some hundreds of uA. Does your VFDs draws more current when no control signals connected? Does it need to be turned on by some specific command? Any idea?

Author:  RayeR [ Fri Jan 27, 2012 4:27 ]
Post subject:  Re: Noritake GU256X64-W376 - pinout, what supply voltage

I also asked Noritake, but they told me, that this was customer specific display so they don't give the documentation.

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