[GreenKeys] ASR-33 going crazy in local mode

[Seth Morabito]

Hello Wayne,

It looks like it has something to do with the answer-back mechanism. I took my answer-back drum and holder out to clean behind it, and when I put it back into the machine, I had it too far forward, toward the front of the TU, so it the drum was engaging the "here is" lever at all times. I've adjusted it and put it back into a better position, and the constant typing problem is gone.

However, there's a new problem -- now, I can't get ANYTHING to type in local mode!

The distributor mechanism looks like it's working correctly. The distributor brush holder is not constantly spinning like it was before, but it does spin whenever I press a key. The distributor clutch engages, the brushes spin, but nothing is getting coded.

I thought maybe it was a dirty distributor disc, so I cleaned it gently with isopropyl alcohol and made sure the brushes were nice and dry, but that didn't fix it. It still won't type. I tested electrical continuity in the distributor disc just to make sure, and it all looks good. The brushes are working fine.

I really think I knocked something out of alignment in the distributor or answer-back area while I was cleaning it. I just need to figure out what it was so I can put it back where it belongs.

-Seth

On Oct 5, 2013, at 12:05 PM, Teletypeparts <teletypeparts at aol.com> wrote:

> Seth,
>  
> Check the kybd reset lever to see if its moving up and down.  See pics.  If it is you may not have the H plate perfect or you may need to adjust the H plate. 
>  
> Also check the Here Is to make sure its not jammed in the keyboard  where the Here Is extension pushes on the white tab.  This is right next to the H plate.  Try depressing the Here Is button to cycle the answerback mechanism once. 
>  
> Those are the easy checks. 
>  
> The H plate adjustment is made by loosening the printer side of the mech. and moving the H plate till the kybd reset has just a little overtravel on its downward movement before it starts up and is caught by the latching lever.  Make the adjustment with the power off and by rotating the motor fan manually toward the front of the printer.  Tricky to do.  Titen adjustment screw after. 
>  
> But first be sure of the other stuff and be sure the printer is sitting in the rubber feet squarely etc.  Visual checks should find the trouble.  It is almost surely something you did on putting the printer back in the 33 base. 
>  
> Wayne
> 
> 
> 
> -----Original Message-----
> From: Seth Morabito <lists at loomcom.com>
> To: greenkeys <greenkeys at mailman.qth.net>
> Sent: Sat, Oct 5, 2013 6:13 am
> Subject: [GreenKeys] ASR-33 going crazy in local mode
> 
> Well, at long last I have finished cleaning and re-lubricating my ASR-33. I very 
> carefully followed the manual's instructions for lubrication, using 5W-20 and 
> white lithium grease where needed. During cleaning I removed the carriage 
> assembly, platen assembly, clutch trip magnet, distributor disc, and motor.
> 
> Tonight I powered it up for the first time after re-assembly. Unfortunately, it 
> is not a happy Teletype!
> 
> In local mode, it's printing a never-ending stream of:
> 
> 11111111111111111111111111111111111111111111
> 
> When it reaches the end of the platen, it just sits there, typing "1" over and 
> over on top of itself.
> 
> Hitting keys doesn't seem to have any effect on what's being printed.
> 
> I did NOT clean the keyboard, and it was working before, so I don't think that's 
> the problem. The H-bar is in place. Did I knock something out of whack in the 
> distributor or the clutch trip mechanism, maybe?
> 
> Where should I start looking first?
> 
> -Seth, NF6Q
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> <Kybd_reset_lever_tripped.JPG><Kybd_reset_lever_reset.JPG>