Pcb/Pba Daigram - Samsung RB31FEJNB Series Service Manual

5. PCB/PBA DIAGRAM
5-1) PART Layout (Main Board)
1. Inverter COMP. Signal Section
2. Section for Diode Option Setting
3. EEPROM : Storing/Writing various data.
4. This Relay Section controls the AC Load and
operates by receiving the driving signals for Micom
via the Sink IC.
5. It receives various sensor signals and delivers
them to MICOM after eliminating noises, and it
detects the Fridge Door open and the Operation of
the Water S/W.
6. MAIN → PANEL PCB Operation Control
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7. Fan Motor / LED Lamp / Water Pump Driver It
supplies 8V ~ 12V to the motors depending on
load types.
8. Buzzer Alarm : It sends out periodic alarm sounds
when a button is pressed or when the door is
open.
9. MICOM, Clock Generation, Software Resetting
10. Main Micom(CPU)
11. It controls the operation of the Fridge Damper and
the Cool Select Zone Damper.
12. Converting AC Power into DC
(POWER SOURCE UNIT)
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