Factory schematic for CTC-9?

[miniman82]

Originally Posted by columbia

Hey there Miniman. Thanks again for the CTC9 schematic. It turns out that almost every resistor on the oscillator board is wrong. My chassis is the CTC9B and your schematic should be the correct one for the "B". The horizontal was way off when I got the set, but the Sams for the CTC9's listed different resistors. I would expect that the previous owner used the sams whereas I am expecting that your copy from the RCA factory schematic is more correct.

No problem, I got this RCA factory book from Wayne but I have no idea if it's possible to order. I think the only way would be online, Ebay or otherwise. FWIW, I routinely find oddities in Sams books, so I don't rely on them. The RCA book has differences too, like with the 21-CT-55. In the RCA book, it's actually a CT-100 chassis which isn't right at all.

The CTC-9 never had any chassis revisions like the others did, so there's only one schematic for it. I looked at the Sams briefly, and it does seem to match up with what I have in the RCA book. Here's a link to it from the ETF site:

http://www.earlytelevision.org/image...Sams-459-1.pdf


Between the 2, you should be able to tell what's right and what's wrong.