Do you have 5 vdc going to the common terminal or is it connected to a ground pin from your parallel port?
The 203's need ground where the 201's and 202's need 5 vdc.
Also, just an FYI, don't switch the DC side of your power supply. I don't know that only 32 vdc would actually hurt the 203, but it is bad practice and someting I did that seemed logical to me. In fact, it caused me to have to hospitalize 5 203's. No problems at all since I eliminated the switch on the dc side.
Here is a troubleshooting guide from the yahoo group that may help if you haven't seen it yet.
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Lee |