[GreenKeys] Model 33 Progress

[Brad]

So I think we are about 95% of the way there with the printing unit on this 33, many thanks again to Wayne.  I have two characters that are persistent issues – L almost always comes out as H unless you hold the repeat key.  O very often comes out as a / right at the left most side then gets normal.  M sometimes is an I.  I think that’s just sticky codebars.

 

I’m working on changing the wiring to 20ma current loop so I can interface this thing and see how it actually communicates, if at all.

 

The only weird thing is if I run the 33 for longer than, say, 30 min, suddenly all the characters I type become random.  If I unplug and let the 33 sit for 20 min, then power up again, it’s back to normal.  I would be tempted to think caps but I have ‘new’ tested caps from Wayne.

 

Another thing – the tractor doesn’t pull paper.  Linefeed works, but typically it’ll only advance the paper a half line and then not at all.  It’s like it has no grip.

 

Other than that, she’s looking great. :)  Thanks to everyone for their help and suggestions.

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