Pick a real printer (yours or a popular open one like Ender 3 / Voron 2.4 / Prusa MK4). Annotate a full diagram showing every component covered in this module. Identify which subsystem each part belongs to and document one failure mode + diagnosis for at least 5 components.
If you don't have a printer yet, do this exercise on a popular open-source printer (Voron 2.4 or Prusa MK4). Both have detailed assembly manuals with every part documented.
Kinematics: Cartesian bedslinger Firmware: Marlin (stock); upgraded to Klipper via Raspberry Pi 4
Subsystems: