Prusa Research i3 MK3S+, Manual

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7. Heatbed & PSU assembly
96 Original Prusa i3 MK3S+ kit assembly
STEP 3 Heatbed cable assembly (part 2)
Place the black wire above the pin with "GND" sign. Make sure you are using the
rounded connector .
Place the washer above the rounded cable connector.
Press the M3x10 screw through all parts.
Hold the screw and carefully turn the heatbed upside down.
Place the M3nN nut on the top of the M3 screw and tighten it slightly.
Turn the heatbed back, using pliers and Allen key tighten the screw. We need to
adjust cable position in the next step, therefore do not tighten the screw too
firmly .
Repeat this procedure for the second (red) wire.
STEP 4 Heatbed cable assembly (part 3)
Before proceeding further, please check again the cable is connected with the
correct polarity to the heatbed and properly tightened. Otherwise, there is a risk of
damage to the printer!
BLACK wire must be connected to the " GND "
RED wire must be connected to the " VCC "
The cable cover, which will be applied later requires the connectors to be
slightly inclined towards each other. Press them gently, but leave a gap
between them.
Design of your heatbed might slightly differ from the last picture.
Now, tighten both screws using the Allen key and the pliers.