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Joined: Nov 2008
Posts: 227
Member
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Member
Joined: Nov 2008
Posts: 227 |
Well, I got the buzzers to work, and I get light on line 4, but I had already connected the 3 pairs for line 4 beforehand. They are in the correct order.
Could the problem be that no slot has pins 3 and 18 connected (except for slot 4, which I connected as you instructed, albeit in reverse polarity)?
As it stands, I get no talk path on line 4.
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Joined: Nov 2008
Posts: 227
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Joined: Nov 2008
Posts: 227 |
Ed,
I had the 401A KTU in slot 4 for several weeks WITHOUT having pins 3/18 connected to AB/AG (I had removed all wiring from pins 3/18 on all my slots when I had tried to install my 403 isolation card).
Since the 401A was in slot 4 for several weeks without being connected to AB/AG, and I had tried on several occasions to see if I had a talk path on line 4, do you think I might have fried the 401A card?
I don't see what else could be the problem. I followed your instructions to the letter.
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Joined: May 2007
Posts: 5,059 Likes: 6
Moderator-1A2, Cabling
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Moderator-1A2, Cabling
Joined: May 2007
Posts: 5,059 Likes: 6 |
I don't think you fried it. Test pins 3 & 18 on slot 4 with a voltmeter and see if you're getting 24VDC there.
That would be the first place to test.
Sam
"Where are we going and why are we in this hand basket?"
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Joined: Nov 2008
Posts: 227
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Member
Joined: Nov 2008
Posts: 227 |
Woohoo!!! I got it! The AB 24VDC fuse was blown. all's good now!  it was hard to tell that it had blown, because usually the entire filament kind of disappears when a fuse is blown. In this one, it was the slightest perferation. Hard to spot except from real close up! It always makes my day when my machines work
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