DX100 Teach Lock dosent release

    I have a issue with a DX100 robot, when i turn the key to play mode and press the play button i get a alert telling me to switch to play mode. I checked on another robot (NX100) that works and when i switch this one to play mode i get the message "teach lock released", message that i do not get on the DX100. also in the play mode the touch pendant is not operational on the nx100. i noticed in the user ladder that relay 50053 (teach mode selecting) remains on regardless of the position of the teach pendant switch. any suggestions?

    Does the key actually face the Teach symbol on the pendant when you are in Teach? The nut inside the pendant tends to loosen up and the whole switch will rotate against the o-ring.

    The pendant connects to the pendant cable (X82). The pendant cable connects to the door connector. The door connector (X81) cable for teach and play runs to the YSU board.

    The pendant is pins 4, 5, and 6. Pin 4 is common. On the YSU the connector is CN209, pins A6, B6, and B7. B7 is common.

    I know a thing or two, because I’ve seen a thing or two. Don't even ask about a third thing. I won't know it.

    cable seems fine, i just booted the robot in play mode and seems to be fine switching from play mode to remote and back but as soon as i switch to teach mode, the teach lock is set and it doesn’t release anymore unless i restart the robot in play or remote mode

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