Some case pieces are reversible and can be flipped over and installed either way, while others have a specific orientation. You’ve already been acquainted with some of these pieces during the soldering stage. Let’s assign names to the rest of these parts so we can refer to them in these directions:
Note the location of the paper feed button. This should be oriented toward the BACK of the printer.
Connect the power and serial cables from the DC jack and Cobbler, noting the labels on the bottom of the printer. The connectors are identical and it’s easy to get these switched around.
With these three pieces now “tethered” by wires, they should always be lifted and moved around as a single unit. Don’t pull on any of the wires.