Traduciendo paso 13
The official service manual recommends that you have certain this readjusted and calibrated after disassembly and replacement, but I didn't have any problems with mine after I put it back together.
The calibrations are not something you can do yourself. You need special hardware and software to do it.
See the official repair manual for more info on calibration (and any other part of the disassembly process. I included a couple links in the introduction.