Daewoo frs20 manual Main PCB, Check Point Remark

Page 50

8-5. Main PCB

- Basic Model

1

6

3

2

5

4

NO

ITEM

CHECK POINT

REMARK

1

Compensation of

* Used when making R-temp. down

J1

Weak Refrigeration

to compensate for weak refrigeration

→Making R-temp

J2

without changing FCP temp. setting.

cooler

▷Cutting of J1 ; down by 1.5℃

▷Cutting of J1, J2 ; down by 3℃

2

Relay Power

* To check normal voltage of each electrical devices

Controller

to & from Mi-com.

▷Check input & output voltage of MICOM and IC7

3

Fan Power

* To check input & output voltage of Fan

Controller

▷#2 : Input

F

R

C

▷#5 : Output

4

Electric Current Fuse

* To check when each device does not work (250V,3.15A)

5

Time Shortening

* To shorten time in PCB checkup

Switch

(Pressing 1 time is regarded as 1 minute has passed.)

6

Regulator IC(5V)

* To check voltage of MICOM and IC

Voltage check of IC#6 (Input :12V,Output : 5V)

49

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Contents Refrigerator N T E N T S Page External Views FRSN-U20DB / EB FRSN-U20FB / GB Name of Each Parts Freezer Compartment Refrigerator Compartment Freezer Compartment Refrigerator Specification Basic Model Dispenser Model Specification 220~240V Models onlyDoor Switch , F / R AC220V / 192WOperation and Functions DisplayDispenser Model Front PCB buttonReference Please wait Defrosting Cycle Fan Heater Defrost ModeComp Flow Chart of Defrosting Start Sensor FAN, R-FAN, C-FAN Forced Defrosting ModeFan Voltage of Control Mode VoltageControl of Interior Lights FRSN-U20DA Buzzer or Alarm ControlLouver Heater Control Demonstration Basic ModelCompensation of R-sensor ON/OFF Point Main PCB Resistance of R-sensor Mid ON/OFF PointError Display Basic Model LED Display of Inner ControlRT-S Error Code Contents Dispenser Model Cled Display of Front PCBBasic Model Dispenser Model Eierror Dispenser Model Front PCB Summary of FunctionBasic Model Inner Control Back up Function Basic Model Automatic Icemaker Dispenser ModelStart Ice separating drop mode Dispenser Control Function Lamp Water S/V Basic Model Dispenser Model Power Circuit DiagramCircuit Operation ※ Voltage of every partFunction of Each Sensor MicomDispenser Model Relay Function How it worksIC8 Fan Function Diagram Wiring DiagramDispenser Model Circuit Diagram of Main PCB Page Dispenser Model Page Inner View Component Locate WiewFront View Dispenser + Home bar Model Evaporator Machine CompartmentDisassembling Procedure HOW to Check Each PartsHose Ice Maker Tube Assembly How to check Hose Ice Maker Tube As Bracket Geared Motor Assembly How to Check Hose Ice Maker Tube AssemblyDispenser Micro Switch How to Check Micro Switch88 ~ DC 12V,1.5W Dispenser Solenoid Valve▷ Good 215Ω±10% SOL2003-01B 193 ~ 236Ω ▷Check Change Flap Heater ASMain PCB Check Point RemarkCompensation Used when making R-temp. down Ice Maker ▷ Remove 2 screws on top front of ice makerBlue Circle How to Check Ice MakerIce Dropping Motor ▷ Good RS-360RH-14250 ~ 14Ω On CloseTrouble Diagnosis Faulty Start F/R lights OFF , F-PCB Power OFF※ How to replace Front PCB StartDefrost Heater 192W 252 Ω Freezer Compartment4th pipe from buttom Removing and replacing Freezer parts Removing and replacing Freezer parts Defrost Heater Ice Formation on F-Louver Start Light cover Disconnection / breaking of Freezer Lights Wires StartSwitch to pull forward Cover and pull forwardRefrigerator Compartment Change the light Disconnection / Breaking of Refrigerator Lights Wires StartRemove screws of light cover Hold the bottom Cover and pull BulbsDoor is open too long ? Sensor is OK ? Removing of Check Valve +screw driverOperation Noise of Refrigerator Page Troubleshooting of Evaporator Sound Attach a absorber on point ③ accumulatorFan Noise Start Fan is damaged Or transformed ? Troubleshooting of Fan Noise Pipe Noise Start Door Contents Tools Cooling Cycle Heavy RepairUse special parts and tools for R-134a or R-600a Precautions During Heavy RepairBe sure to replace drier when repairing pipes Drier part with a nipper and then cut low pressure sidePractical Work for Heavy Repair Remove residual refrigerant more than 5 minutes later afterAn evacuated bombe To the low pressure sideClose valve ① Be sure to chargeTake a leakage test on the welded or suspicious area with an Electronic leakage testerBrazing Reference Drawings HighLow Compressor Suction PipeDimensions including Door Handles Installation GuideInstallation Preparation Width*Depth*Height 903mm X 734.5mm X 1790mmIf the refrigerator can not enter the door ※Remove front bottom cover first, if it is attachedReplacing Freezer Door Refrigerator Leveling & Door Adjustment Case freezer door is lower Than refrigerator doorJoin connector to water tap Get ready to install water line Leave a sufficient distance when cutting the tubesConnect water tube Remove any substance from filterAttach the filter box 2Insert the fastening ring into the Water tubeDispenser Water Flow Cabinet Machine Room / Eva Part Refrigerator Room Freezer Room Freezer Door Refrigerator Door Reference