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This topic comprises 4 pages: 1 2 3 4
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Author
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Topic: CP200 - trouble getting signal thru
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Jim Henk
Master Film Handler
![](http://www.film-tech.com/ubbmembers/3628.jpg)
Posts: 364
From: San Diego, CA
Registered: Feb 2006
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posted 06-25-2012 11:07 PM
Hi.
I'm pressing a CP200 into service that I got a few years back, and I'm having trouble. I talked to Tony B, and he suggested I get a stream started here. So here are the symptoms. (Projector is a Christie P35GPS-AT with usual stereo cell - Finally got the mechanical issues sorted out!!!)
Non-sync (format 60) works fine.
(with projector running) Select Format 04, Projector 1, and press GO. Non-sync of course silences, but no sound comes out, and the Dolby level meters are not moving at all. Open up the front panel of the Processor Unit, and the Optical card (cat108) and the mag card (cat201) show Projector 2 is selected, even though the Control Unit shows that the proper projector has been selected, and we are, in fact, in Format 04. Oh crap.
So I switch the cables on the back from Proj1 Optical In to Proj2 Optical In, and try it again. Select Format 04, Projector 2, and press GO. No change except on the Control Unit panel.
Same with, just as a test, Format 1 (Academy Mono) Lights on the Optical and Mag Cards unchanged, and no signal.
Switch back to Non-sync, (Format 60) and sound returns *and* the Optical Card and the Mag card now both show Projector 1 is selected, though all the indicators on the Control Unit are correct.
Processor Unit Inventory: cat108C, cat201, cat143-1 (non-sync card), cat 141a (switch card), copycat280, cat22, copycat280, cat22, cat109C, cat109C, cat 109C (meter/filter cards), cat207 (bridged: 68, 117, 134, (then snipped, apparently) 151, (also snipped) 29, 251 to 255 with a wire, and on the left, H, J, K, M, N, P, and S.
Next - cat560, (upgraded Optical Bass Extension Card) cat150E, (Surround Decoder Card) cat207 (bridged with various value resistors - some 2.2k, some look like 1.3k, others) 6, 21, 35, 113, 114, 121, 124, 148, (bridged straight) 12, 55, 58, 79, 109, 142, 153, 164, 184, 187, 206, 237, 255, and A, B, C, D, F, H, J, K, L, M, and N.
Also cat 141A (switch card) cat 142, (dual filter/equalizer card) cat141A (another switch card)
TMI, I'm sure. Sorry. But I'm not sure what you need to know, and what you don't.
This ring a bell with anyone? Thanks very much. Be well.
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Jim Henk
Master Film Handler
![](http://www.film-tech.com/ubbmembers/3628.jpg)
Posts: 364
From: San Diego, CA
Registered: Feb 2006
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posted 06-27-2012 09:16 PM
Sam, you're correct about the sockets/plugs. If there isn't an obvious cable coming from the socket in the pic, then it's empty.
No AUX unit, and the unit's histories are unknown. I bought it from an eBay outfit (in person pickup) in L.A. called Salesbaron. They didn't have anything to say about it other than it was working when it was removed. I had LIT go through it, and they stuffed the remaining cards, and upgraded a few to the list I posted.
The two 207 cards are jumpered differently, and I haven't touched them, except to remove them one at a time to inventory the bridges, and put it back. All cards are in their prescribed positions.
DA-20 or other changes? Let me know what to look for, and I'll report back. Til then, not sure what to look for.
Aha. Wackiness ensues. There's a change in behavior since last night. In Format 04, Selecting Projector 1, *both* the Projector 1 and Projector 2 indicator lights on the 108 and 201 cards light up at half brightness, the Dolby levels peg on L, C, R, and Surround, and there's a soft whine out the speakers. Selecting Projector 2, the whine disappears, the indicator for 2 is on, 1 is off, and the Dolby levels are zero again. So I changed the solar cell wiring from 1 to 2. No change. So I took the solar cell off the CP200 completely. No change. So much for that idea.
One other thing. Format 03 is the same, and Format 01 (Academy Mono) the Dolby levels are only to about 2/3. I don't have any other formats between 00 and 18. The all blink 'nope'.
Other standard format numbers - 35 and 70 mag perform just like I described originally. Locked at Projector 2, but no Dolby level activity. (but then again, they're not connected to any head...) Here's something interesting: Format 66 (Dolby Test) used to come out the center channel. (only) Now it doesn't come out anywhere.
If it helps, the cards were all pulled (one at a time) and reseated on the Processor Unit only, and no cards were touched at all on the Control Unit.
Why do I get the idea that I have the Devil's spawn here?
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