634 Serial garbage characters


New member
I just got installed my 634 Serial. The baud rate is set at 19200. I am running under WinXP with the latest CrystalControl software.

I have a problem with my LCD screen. If I display a character on line 3 that is higher then 5 pixels it messes up the whole display.

This is when it is working right.

Now this is when it is messed up.

The first picture is a single 'h', second one is a line of 'h', third is line of '7', and the last one is a line of 'H'. I

Is there something I can do to fix the unit myself or am I going to have to RMA it?
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