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Celestron Nextstar GT Mount encoder sensor for motor SLT-F00-1A

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#1 clearabskies

clearabskies

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Posted 29 November 2021 - 12:26 AM

Hello, I have bought Celestron Nextstar GT Mount from second hand shop few days back, after aligning it using two star alignment method i found that its ALT motor is rotating randomly, so I opened the mount and found that encoder sensor for this motor is not giving output as required. I have checked motor control board outputs by plugging AZM motor there and everything is working fine. Can anybody let me know how this encoder sensor works? which led and transistor is used ? what is the exact output is expected at two encoder wires other than 5V wires? can anybody let me knoe the replacement circuit for the same? Hereby attached all the images for reference. Thanks in Advance

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