Ender 3 V2 - Pictures

Green - Belt Tensioners

The belt tensioners are used to adjust the tension of the X and Y axis belts.

Red - Screen and Knob

The screen is used to adjust settings and set things to print. Counter-Clockwise on the knob moves the cursor up, Clockwise on the knob moves the cursor down.

Purple - Bed, Springs, and Knobs

The Bed is where objects are printed. The Springs and Knobs are used for leveling the Bed.

Pink - Z-axis limit switch

The Z-axis limit switch is used to tell the printer when the Z-axis is homed. Do not plug in on good printer.

Blue - Hot-End Assembly

The Hot-End Assembly is where the Fan, Heating element, and nozzle is. The Z-axis probe to the left is only present on the good printer. Enables auto bed leveling.

White - Stepper Motors

The stepper motors are the precise motors that move things around in the printer.

Yellow - Extruder

The extruder is the stepper motor that controls the flow of filament into and out of the Hot-End Assembly via the Bowden tube. 

Orange - LED Light Switch

The switch controls the LED lights in the good printer.

Light Blue - Filament Holder

Pretty self explanatory, holds the filament.