Labeled for the motor's armature connections. If the motor spins the wrong way, reverse these two wires.
The JYM-C220BI schematic represents a standard, robust industrial power supply design. It prioritizes reliability and cost-effectiveness using mature PWM technology (like the OB2269/CR6842 family). It is suitable for applications requiring stable dual-channel DC power with comprehensive protection features.
Have you successfully repaired a JYMC220BI board? Share your voltage readings or a link to a real schematic in the comments below to help the next person who searches for this keyword.