634 Serial and DFI NF4 Ultra-D


New member
I can't get my 634 serial to work on my DFI NF4 Ultra-D. I have it connected to the internal com port on the motherboard. I can get it to turn on with both Crystal Control and LCD Smartie, but after the initial "Crytsalfontz" screen, it just displays a flashing cursor in the top left corner. Any help would be greatly appreciated.
Looking for additional LCD resources? Check out our LCD blog for the latest developments in LCD technology.

CF Tech

The WR232Y08 is made for the CFA-633. It "fits" between the CFA-634 and the motherboard, but the pinout may or may not work. In your case, it looks like that is a "not" :( . What you probably need is something like this:

(see this thread https://forum.crystalfontz.com/showthread.php?threadid=4 for background information)

We have a new part that does this function, it is called a WR232Y23. Please write support(at}crystalfontz{dot)com (edit to '@' & '.') and we will see if we can get you one somehow.
USB LCD Displays - Graphic and Character LCDs with a Keypad