11. Remove the black wire wrapping from the extruder cable.
Find the seam in the black cable and unroll the wrapping. The wrapping will easily pull
off the entire cable.
12. Label the new thermocouple.
Use a piece of tape to label the Mightyboard end of the new thermocouple, just above
the leads. This will ensure that you do not confuse it with the thermocouple from the
other extruder.
13. Exchange the old thermocouple for the new one in the extruder cable.
The extruder cable is the bundle of wires taped together at intervals. At each place
where the bundle is taped, carefully cut the tape, remove the old thermocouple from
the bundle, add the new thermocouple to the bundle, and re-tape the bundle.
14. Flip the MakerBot Replicator 2X so that it rests on its left side and the bottom
of the machine faces you.
15. Remove the electronics bay cover.
Use the 2.5 mm hex wrench to remove the four bolts attaching the cover to the
underside of the bot. Set the bolts aside.
16. Detach the thermocouple from the MightyBoard.
Follow the end of the old thermocouple to a set of terminals on the MightyBoard. If
these terminals are secured by buttons, push the buttons on the terminals to release
the red and yellow leads. If the terminals are secured by screws, use a small flathead
screwdriver to loosen the screws until you can remove the leads.
Discard the old thermocouple.
17. Attach the new thermocouple.
Locate the leads on the new thermocouple and slide them into the same set of
terminals. The terminals are labeled "Red" and "Yellow" and it's very important that
each lead goes into the correct terminal.
For terminals with buttons, press the buttons on the terminals, slide the leads all the
way in, and release the buttons. For terminals with screws, slide the leads in and
tighten the screws. Tug on the leads to make sure they're secure. You may find that it's
easier to reconnect one lead at a time.
