Samsung RSJ1K Series Service Manual page 79

PCB DIAGRAM
5-2) Parts Layout (Inverter comp control Board)
Used for Inverter Model
1. PCB Power Source: SMPS Circuit It supplies DC12V,5V and GND to MAIN PCB.
2. Filter: It receives various signals, and then after filtering their noises, it sends them to MICOM.
3. Comp Signaling: It receives comp operation signals from MAIN PCB.
4. Option Setting
5. Surge Detecting: It protects IPM form voltage surge.
6. Comp Controlling (IPM): With Comp signals, it controls Comp RPM.
7. Sensor: By monitoring each phase of Comp with Comparator (KA339A), it controls Comp.
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