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This topic comprises 2 pages: 1 2
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Author
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Topic: Sony SDDS DFP D2000 Problem
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Michael Schaffer
"Where is the Boardwalk Hotel?"
![](http://www.film-tech.com/ubbmembers/1204d.jpg)
Posts: 4143
From: Boston, MA
Registered: Apr 2002
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posted 04-02-2009 04:47 PM
In addition to following Marin's tip which I think is a good one, you should also hook up the PC and check the B-chain alignment. Who knows, maybe the channel output faders and graphic EQ bands are all pulled up all the way, that could send these channels into distortion. It looks like the problem vanished for a few months though, so that would make it extremely unlikely that there is a problem with the setup. But your problem history is not entirely clear. Did the problem disappear for a while and then it returned? Unfortunately I don't have the service manual with the detailed board information and diagrams anywhere within reach right now, so I am also out of ideas at this point.
EDIT - OK, I actually found the service manual and if flipping the film does not move the problem to other channels and the S and P indicator LEDs on the left side of the DSP-61 board (the third from the top) are more or less continuously lit when a piece of film with good SDDS data is running, then the problem is most likely on the APR-6 DAC board (the one at the bottom). There is a method to check and align the input and output levels of this board for which you need a real time analyzer, an oscilloscope and some basic experience with electronics. You also need an extender board to reach some of the adjustments but I think you can work around that because the chance to get that extender anywhere is basically 0. I have done this only two or three times more than 10 years ago, so I don't remember all the details. If you feel like attempting this, PM me a fax number then I can fax you the pages from the manual.
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