C4 Maintenance 4. Cable UnitC Series Maintenance Manual Rev.2 2515. Remove the Joint #5 motor unit and the Joint #5 belt from the Arm#4.Hexagon socket head cap bolts: 2-M4×15 (with a plain washer)16. Remove the Joint #6 motor unit and the Joint #6 belt from the Arm#4.Hexagon socket head cap bolts: 2-M4×15 (with a plain washer)17. Cut off the following bands from the Arm #4 cable fixing plate.Cable bandCoil plate fixing band18. Remove the following parts from the Arm #3.Arm #3 cable fixing plate (circle)Hexagon socket head cap bolts: 2-M4×8Ground wire fixing bolts (triangle)Hexagon socket head cap bolts: 2-M4×8Control board 2 (square)Hexagon socket head cap bolt: 1-M4×10Hexagon socket head cap bolt: 1-M3×819. Cut off wire ties of the Arm #3 cable fixing plate.Cable bandCoil plate fixing band