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#1
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AMI I 200 Selector Problem
I am working on a AMI I 200 jukebox, I recently picked up. I have never working on one of these. When you make a selection, some of them register and some do not. The letter keys all seem to register, but the upper number keys do not. If I punch in A 20, the selector will go through all the motions, but will just spin and never find the pin. I have to stop it manually. Does anyone have any idea where I need to look??
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#2
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AMI I 200 Selector Problem
On Nov 18, 3:13*pm, wendlandt
wrote: I am working on a AMI I 200 jukebox, I recently picked up. *I have never working on one of these. *When you make a selection, some of them register and some do not. *The letter keys all seem to register, but the upper number keys do not. *If I punch in A 20, the selector will go through all the motions, but will just spin and never find the pin. *I have to stop it manually. *Does anyone have any idea where I need to look?? -- wendlandt I'll assume that "the selector" -is the search unit on the front of the mech. When this happens on AMI's it usually means that either there is no.poor continuity in the series contacts on the keyboard or, the "scratch' contacts (the ones that spin -not- the stepper ones that step up then reset) are not making contact. It is possible that the stepper contacts are also worn/pitted. Essentially, you'll have to take the cover off and examine the spinning and stepping contacts for wear. Check that there is adequate contact pressure by -carefully- trying to lift them off the contact board that they ride on. Be careful not to bend them, but see that there is some pressure. If they are not too badly worn, but making poor contact you can remove them and just bend slightly to add a little more pressure. I have owned an I-J-K-Continental's one and two, -all had this problem. In fact, AMI changed the design of those contacts beginning with the "L" in that they were flipped and now sort- of scratched instead of riding on the elbow of the copper contact metal. The keyboard contacts can be easily checked with an ohmmeter or any DVM/multimeter Rob |
#3
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WOW!! Thank you very much Rob! That is a great help. I am going to start with the keys. I have already cleaned the scratch contacts in the pulse generator and they look great. I did not hit the keyboard too hard. Thank you again.
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