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I didn't check myself in the manual, but from what other have said, I am assuming that you have the same setup as the S/V/C 70. If so, take a look at my own query/response just a few posts up:
http://www.brickboard.com/AWD/index.htm?id=659691
In addition, I did find a way to open it up without cutting the top. I spent a lot of time trying to figure out exactly how the top fit on. When I finally found a picture of one split apart, it took about twenty minutes more to open it up. Mind you, I don't think this would be considered a proper way of disassembing any precision electro-mechanic device.
First of all, I used a very small thin scraper to work my way around the seal between the top and bottom. (I am calling the thinner section the top.) This broke some of the adhesion of the black sealant they used to glue to two parts together. (Remember, it wasn't meant to be take apart.) Initially I dug out quite a bit of the rubber sealant, or whatever it is they use here, but that was when I was still trying to figure things out. (It might have made things easier later.)
Then I mounted the unit on a piece of wood, top side up. This next part could break the module if not done carefully. I found some 3" construction screws (from Home Depot) which had just the right head size to fit through the four holes used to fit the module to car. The head also has to be small enough so the top can fit over it. (You have to be looking at the unit to see this.) I tigtened it down just snug enough to hold it, since I didn't want to split open those metal guides.
Next I used a piece of a 2x4 stud (which is 1.5 inches wide) and a wide chisel. (The wider the chisel, the less chance of cracking the top.) With the 2x4 right up to the side of the bolted down module, place the chisel (flat edge facing up) under the top edge of the module. Now very gently apply an upward pressure on the top. There will be very little movement at first, as you are breaking the adhesion of the sealant. Work your way around the module a few times and you should be able to see the top slowly coming off. Take you time and, with luck, you won't crack the top or bottom.
I think it would be better to apply a solvent to the sealant before trying to break them apart, but I am not familiar enough with chemicals to know which solvents would soften the black sealant and yet not hurt the circuit board. Anyone else?
Sorry for the long posting. I hope it helps somewhat.
Optimist.
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