I have seen this problem discussed on christies but what causes it on the XL's and what can I do to repair the problem?

If you are running a belt drive, such as the 5-star uses, look at the fluctuation of anything that may occur at the snubber rollers. That could give a clue.

If sound warble is present, it is due to something dragging, impeded, or something just not turning at the desired RPM.

Check the scanner drum. I have a tendency to believe that it might not be turning at all, or very little. The cover on the non-operating side is the shittiest in the industry (With the exception of the RCA-1040) and could come in contact with the rotary stabilizer).

Now, if four of those have the same problem, you may be threading your sound head TOO TIGHT! You have to have some slop. On the 1000's and the 1004's, have a MINIMUM of 1 sprocket hole of slop when the guide roller is closed. Nominally, it is TWO! It depends on what your tech used for slop when he calibrated your system.

Paul

If someone used WD-40 on the shaft and bearings of your lateral sound guide roller, I'll bet that is what could be causing your whole problem. The whole thing might be gummed up. If that be the case, the only way I know of is to remove, dismantle, abd clean the units. It may be necessary to replace the small shaft bearings, as well as the cushion roller itself. WD-40 probably struck again.....

You say your scanner shaft is "tight". What do you mean by that? Is it hard to turn? If it is, you found the problem. It should turn very freely.

I hate those hump-back SH-1004's. POS! They don't even "fit themselves".

I have an old set of bearings that are all gummed up. I sat them in degreaser for an hour and now they turn like champs.

What oil should I soak them in before installing them?

Aaron

I used vasoline on them (very sparingly) from time to time and it seemed to have favorable results, but there may be other things out there that are better than that.

It would by best to replace the bearings. They are cheap, and generic. Just get the bearing number off the bearing, and even some automotive parts houses can cross them for you. They run about 6 bucks a pop.

I am already getting a whole new set of bearings for all my projectors. Thanks for all the help guys.

Wait till my next problem.. its a doozy..

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I am pretty sure I didnt get a good allignment actually. Or maybe I did. It was all by ear. You know we are too damn cheap to use equipment, or testing, or people, or money. All I know is that is sounded like hell with or without the warble, and at this point its presentable.

And speaking of cheapness, I did talk to the so called people about you know what... I got the same answer you did, just a run around and red tape. I would send guido. They werent interested in talking to me about it, they seemed rather put off that I would care. Personally I agree with you that I am somewhat crazy for continiuing here, I need therapy. Please god help me. Maybe I just like and impossible challenge. Someone tells me I cant do it and then I do it. Or break it. Mostly its a fifty fifty split, just like praying to god and the like. What the hell was I talking about anyway.

Dave