Loosen the 8 screws securing the right-side cover using a 2.5mm Allen key.
Lay the right cover flat. Using labels or label ties, mark the cables on the constant current board.
Disconnect the cables from all the ports on the constant current board.
Loosen the 4 screws holding the constant current board using an 2.5 mm Allen key. Remove the old constant current board.
Prepare the new constant current board. Align it with the screw holes and put it in the installation position. Tighten the four screws using a 2.5 mm Allen key.
Insert the cables into the ports on the constant current board according to the lable information.
Align the right cover with the screw holes and put it in the installation position. Tighten eight screws using a 2.5 mm Allen key.
Power on the printer. Select Tool - Calibration - Next. The printer is ready for use if the LCD screen displays ELEGOO logo.