Help! noob in over his head with new ("used") Tenlog TL-D3-pro setup :-(

[minneapolis-matt]

The general shape of the EE-SX6 is consistent with an IR detection module. Consider to move the extruder assembly as far away as possible, then power up. As the mechanism begins to move, insert a piece of plastic or paper into the slot to trip the sensor.

The statement that there's nothing in the area to move into the slot is fairly useful in this discussion. If the tripping causes the carriage to zero, you know there should be something to move into the slot.

Thank you!

It seems that I spoke too soon.

The small black tab barely visible on the lower outside of the extruder in the second picture now triggers the e2 limit switch on the right when homing by moving directly into the indicated slot.

Nothing seems to be able to get the e1 limit switch on the left to trigger however. is it safe to assume a high chance of successful repair simply by replacing the limit switch on that side?

I found the optical limit switch on the tenlog web site and ordered 2 of them for a total of $17 with shipping.