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 Posted: Tuesday Jan 15th, 2019 10:12 am
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Need to identify a few tings on a really old SEM Gen1 but can't find documents for it. Can anyone point me at them or post them please? Specifically..What is JP12 in the corner and next to the KA/KB and the white 4 pin header? Ta very muchly.

Last edited on Tuesday Jan 15th, 2019 10:29 am by Home



 Posted: Tuesday Jan 15th, 2019 11:18 am
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slychiu
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Comfort 1  manuals including SEM can be found herehttp://www.cytech.biz/product_details.php?item_id=312



 Posted: Tuesday Jan 15th, 2019 11:26 am
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That doesn't show the 2 pin connector labelled JP12.Nor does it mention anything about it



 Posted: Tuesday Jan 15th, 2019 11:32 am
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slychiu
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JP12 ?
can you show a photo?



 Posted: Tuesday Jan 15th, 2019 01:02 pm
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Here's a picture...

Attachment: 20190115_105249(1).jpg (Downloaded 13 times)



 Posted: Tuesday Jan 15th, 2019 05:56 pm
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Your help appreciated?

back on site tomorrow and could do with knowing what is wired to this pin location?



 Posted: Wednesday Jan 16th, 2019 02:01 am
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slychiu
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JP12 on a very early SEM should be Tamper. There should be marking TAMP and COM on the PCB, it should not be unmarked. Perhaps the text is hidden in the photo. The PCB should be almost 20 years old



 Posted: Wednesday Jan 16th, 2019 09:02 am
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Yes, 20 years old is probably about right.
As you can see in the photo, there are no markings on the PCB other than 'JP12'.



 Posted: Wednesday Jan 16th, 2019 11:01 am
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slychiu
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Try opening the input, see if there is tamper alarm



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