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6. PCB DIAGRAM
6-1) PART ARRANGEMENT (Main PBA)
1. SMPS Circuit : Not used.
2. Ice Maker Circuit : Receiving the data of sensor, Hall S/W, Ice Route Micro S/W
3. Ice Maker Control Circuit : Controlling AC Load like motor, solenoid, heater related to ice making
4. Heater Control : Relays for F/R-def-heater, R-H/B-heater, Pipe-heater, Dispenser-heater F/R-cap-heater
5. Driver IC : Using MICOM signal to control relays.
6. BLDC Fan Control circuit : Supplying the power to the fan motor using PWM
7. Cool Select Zone control circuit : Controlling Cool Select Zone PBA.
8. Inverter Communication circuit : Sending operating RPM signal & receiving error feedback.
9. Step Valve control circuit : using motor driver IC to control step valve motor
10. Lamp control circuit : Controlling F&R room lamp
11. PLC circuit : Not applied
12. Display communication circuit (UART) and Dispenser lever & H/B switch signal
13. Cool Select Zone control circuit
14. Sensor & Door Switch circuit : sensing several sensors & door switches signal.
15. EEPROM : memory for data saving.
A. Diode option setting part
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PCB DIAGRAM
6-2) Connector Layout & Descriptions of Inverter Controller Board
1. PCB Power Supply : From the SMPS circuit, it supplies 15V and 5V for the Main PBA control and supplies15V and
5V to the Inverter circuit for the Compressor control.
2. Inverter Control Circuit : Fridge Compressor Control Circuit.
3. COMP Driving / Feedback CircuitIt receives the COMP operation signals from the Main PBA and feedbacks the
inverter errors to the Main PBA.
4. BOOTSTRAP Charger : It is an independent power circuit for the driving of the IMP High-Phase IGBT.
5. Current Pickup Circuit : It pickups the currents taken by the Shunt resistance and does the PWM DUTY control.
6. IPM (FNE41060)
7. Micom (MN103SFC2D)
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PCB DIAGRAM
6-3) CONNECTOR ARRANGEMENT (Main Board)
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PCB DIAGRAM
6-4) Connector Layout & Description (Inverter comp control Board)
Used for Inverter Model
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