5-1)PcbLayoutWithPartPosition - Samsung RFG298HD Service Manual

PCB dIAGRAM
5-1) PCB layout with part position
1. DC12V,5V,GNDsuppliedfromSMPSPCB
2. CircuitforcontrollingStep-Valve(3-WayValve)*Option
3.  F ANMOTORcontrolpart:Tosupplythepowerfrom8.3V~12Vaccordingtothemotortypes.
(F,R,C,ICE)
4. EEPROM:Saveandrecordeverykindsofdata.
5. TransmitinputtedsignalsfromeverysensorintoMICOMaftereliminatethenoise.
6.  M icom:controltheregrigeratorCeramicresonator:generatethebasicfrequencyofMicomoperation.
ResetIC:makeMicomresetifinputvoltageofMicomisdetectedlessthanthespecifiedvoltage
7.  P LCinput/output
-PLC(PowerLinecommunication)*Option(PLCmoduleisnotinsertedunlessspecifiedoccasion)
8. OperateICE-MAKER,supplypowertoMOTOR,andsensethevariationofswitch.
9.  M ainMicom ↔PanelMicomserialcommunicationcircuit-Dispenseroptioninputpart
 (Water&CoverIcerouteswitch)
10. PANTRyRoomdisplaycontrolpart:displayLED,detectKEystate.
11. ControlPANTRyRoomdamper&Damperheater
12. WaterTankHeaterControls(alsocontrolsotheroptions)
13. LEDLAMPControlCircuit(F,RroomLamp)
14. RelaypartsthatcontrolsACloadandreceivesMicomoperatingsignalthroughSinkIC.
15.  C onnectorwithACload
a.Diodeoptionsettingarea
b.InverterCOMPcontrollingsignal
 c.FlowSensorcontrollingsignal
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