lrbp1031xx lg 10 cu. ft refrigerator service manual

7/18/2019 LRBP1031xx LG 10 Cu. Ft Refrigerator Service Manual

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CAUTIONBEFORE SERVICING THE UNIT,READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

MODEL: LRBP1031WLRBP1031NI

REFRIGERATOR

SERVICE MANUAL

COLOR: EURO WHITE

Ref. No.GR-349SQF

GR-349STQ

http://Biz.lgservice.com



SAFETY PRECAUTIONS ....................................................................................................................................................... 2

SERVICING PRECAUTIONS.................................................................................................................................................. 3

SPECIFICATIONS................................................................................................................................................................... 4

PARTS IDENTIFICATION ....................................................................................................................................................... 5

REPLACEMENT OF DOOR OPENING TYPE ....................................................................................................................... 6

DISASSEMBLY.................................................................................................................................................................... 7-8

DOOR................................................................................................................................................................................... 7

DOOR SWITCH.................................................................................................................................................................... 7

FAN AND FAN MOTOR........................................................................................................................................................ 7

DEFROST CONTROL ASSEMBLY...................................................................................................................................... 8

LAMP.................................................................................................................................................................................... 8

ADJUSTMENT................................................................................................................................................................... 9-10

COMPRESSOR.................................................................................................................................................................... 9

PTC-STARTER..................................................................................................................................................................... 9

OLP (OVERLOAD PROTECTOR) ..................................................................................................................................... 10

CIRCUIT DIAGRAM.............................................................................................................................................................. 10

TROUBLESHOOTING..................................................................................................................................................... 11-16

COMPRESSOR AND ELECTRIC COMPONENTS............................................................................................................ 11

PTC AND OLP.................................................................................................................................................................... 12

OTHER ELECTRIC COMPONENT.................................................................................................................................... 13

SERVICE DIAGNOSIS CHART.......................................................................................................................................... 14

REFRIGERATING CYCLE............................................................................................................................................ 15-16

MICOM FUNCTION & PCB CIRCUIT EXPLANATION................................................................................................... 17-33

EXPLODED VIEW .......................................................................................................................................................... 34-35

REPLACEMENT PARTS LIST ............................................................................................................................................ 36-

Please read the following instructions before servicing yourrefrigerator.

1. Check the set for electric leakage.

2. Unplug prior to servcing to prevent electric shock.

3. Whenever testing with power on, wear rubber gloves toprevent electric shock.

4. If you use any kind of appliance, check regular current,voltage, and capacity.

5. Don't touch metal products in the freezer with wethands. This may cause frostbite.

6. Prevent water from flowing onto electric elements in themechanical parts.

7. When standing up after having checked the lowersection of the refrigerator with the upper door open,move with care to avoid hitting the upper door.

8. When tilting the set, remove any materials on the set,especially the thin plates (ex. glass shelf or books.)

9. When servicing the evaporator, wear cotton gloves.This is to prevent injuries from the sharp evaporatorfins.

10. Leave the disassembly of the refrigerating cycle to a

specialized service center. The gas inside the circuitmay pollute the environment.

SAFETY PRECAUTIONS

CONTENTS

- 2 -



Air Recharging in CompressorTest the refrigeration by connecting it electrically beforerefilling operation. It is necessary to ascertain the functionof the motor-compressor and identify the defectsimmediately. If defects have been found, empty the oldsystem of possible R134a residue by breaking off the endof the extension piece at its narrow point. (Figure 1)

Replace the filter and any damaged components. Unsolderand pull off the piece remaining inside the service tube andthen attach an complete extension with male Hansen, andsolder it to the same tube again. (Figure 2)

It is necessary to execute the soldering operation withvalve open so that the fumes caused by oil residue cancome out freely without blowholes between two tubesduring the heating of the point to be soldered.

The extension fitted with the male Hansen is connected tothe female fitting of the vacuum pump tube. (Figure 3)

Air evacuating from the system begins as soon as thepump starts. The refrigeration system must be kept undervacuum until the reading on the low-pressure gaugeindicates vacuum (0 absolute, -1 atm., -760 mm hg) in anycase it is advisable to keep the pump running for about 30minutes. (Figure 3)

In case that a considerable leakage occurs it will benecessary to stop the vaccum pump and to add a smallquantity of Freon to the system, if vacuum should not beobtained (pressure gauge can't fall to 1 atmosphere), startthe refrigeration unit and find the leakage with the specialleak-finder. When the defective soldering point is visible,re-do it after opening the extension tube valve and

reestablishing the normal outside pressure inside thegroup.

Because the melted alloy is sucked into the tubes andblocks them, the pressure must be rebalanced whenvacuum is in the system in soldering. As soon as the

vacuum operation is over, add the quantity in grams ofR134a to the refrigeration system. Remember that everysystem has an exact quantity of R134a with a tolerance of

±5 grams that can be added. (Figure 4)

Before performing this operation (if the vacuum pump andrefilling cylinder are connected), make sure that the valveplaced between the vacuum pump and the refilling tube areclosed in order to keep the Freon for addition to the system.(Figure 5)

In addition, check the graduated scale on the cylinder forthe quantity of R134a to be added, for example, if we have

750 grams of Freon in the cylinder and must add 165grams to the group, this amount will be reached when R-134a has dropped to 585 grams, remembering that theindicator shows a lower limit of meniscus. Do this afterchoosing the scale corresponding to the gas pressuredifferent scales reported as the same gas pressureindicated by the pressure gauge on the top of the column.

To make R134a flow into the system, open the valveplaced at the base of the cylinder and connected to thefilling tube. The amount of Freon cannot be added to thesystem all at once because it may cause a blocking ofthe motor-compressor. Therefore, proceed by adding theoriginal quantity of about 20-30 grams and close the valveimmediately.The pressure rises and the motor compressor must start

sucking the gas and lowering the pressure again.Regulate the valve again, in the safe way until reaching thequantity of R134a established for the system beingcharged. When the system is running, the suction pressuremust be stabilized between 0.30 to 0.6 atmosphere.

POINT TO BEBROKEN CHARGE TUBE

EXTENSION

FEMALEHANSEN

MALE HANSEN

SOLDERING POINTSERVICE TUBE EXTENSION

Figure 1 Figure 2

TO THE VACUUMPUMP

PRESSUREGAUGE

Figure 3

TO THE R134a CYLINDER

TO THE REFRIGERATIONSYSTEM

Figure 4

FILLING ORCHARGE TUBE

VALVE TO BE OPENEDWHEN REFILLING

VALVE TO BE CLOSEDAFTER VACUUM

TO THE VACUUM PUMP

TO THE REFRIGERATIONSYSTEM

TO THE CHARGECYLINDER

Figure 5

SERVICING PRECAUTIONS

- 3 -



1. Ref. No: GR-349****

SPECIFICATIONS

- 4 -

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 595(W)X626(D)X1710(H)

NET WEIGHT (kg) 69

COOLING SYSTEM Fan Cooling

REFRIGERATOR Knob Dial

FREEZER Button

Full AutomaticDEFROSTING SYSTEM

Heater Defrost

DOOR FINISHPre-Coated Metal

OUT CASE Painted Steel Sheet

INNER CASE ABS

INSULATION Polyurethane Foam

DEFROSTING DEVICE Heater, Sheath

REFRIGERANT R134a (150 g)

LUBRICATION OIL FREOL @ 22G (210 cc)

TEMPERATURECONTROL

ITEMS SPECIFICATIONS

Transparent Shelf (2 EA)

REFRIGERATOR Vegetable Container (2 EA)

COMPARTMENT Vegetable Container Cover (1 EA)

Chilled Container (1 EA)

Dairy Pocket Cover (1 EA)

Egg Tray (1 EA)DOOR POCKET

Little Pocket (3 EA)

Bottle Pocket (1 EA)

FREEZER Tray Drawer (4 EA)

COMPARTMENT Ice Tray (1 EA)

COMPRESSOR PTC Starting Type

EVAPORATOR Fin Tube Type

CONDENSER Side & Wire Condenser

or Vinyl Coated Metal



NOTE : This is a basic model. The shape of refrigerator is subject to change.

PARTS IDENTIFICATION

- 5 -

RotatableDoor Basket(3)

Utility Corner(movable)

Bottle Holder

2-liter BottleDoor Basket

Leveling Screw

Egg Tray (1)

Freezer TemperatureControl

RemovableGlass Shelf (2)

Lamp

Multi-air Flow Duct

Fresh Meat Keeper

RefrigeratorTemperature Control

Vegetable DrawerUsed to keep fruits

and vegetables, etc.

fresh and crisp.

Ice Cube Tray

Freezer Compartment

Removable Base



1. PRECAUTION

1) Before reversing the door, you should remove food and

accessories like shelves or trays which are not fixed inthe refrigerator.

2) Use Torque Wrench or Spanner to fix or remove thebolt.

3) Don't lay the refrigerator down in working with it, it willcause a malfunction.

4) Be careful not to drop the door in disassembling orassembling the freezer or the refrigerator door.

2. HOW TO REVERSE THE DOORS

1) Remove screw and remove Cover and move Cap

Cover. And, remove screw, Hinge-L, and

remove pin. Remove the Freezer Door , and move

the position of the cap . Move the position of bracketdoor and screw.

2) Remove bolt and remove the Hinge-C

and the Fridge Door. Move the

position of the cap. Move the position of bracket

door and screw.

3) Move the position of Hinge-U pin , and Cap, Top cover

Assemble the Fridge Door. Assemble Hinge-Cand bolt. Assemble F-Door . Assemble the Hinge-L

and bolt. Assemble Low Cover and screw.

REPLACEMENT OF DOOR OPENING TYPE

- 6 -

7

2

3

1

214

6

5

8

9

14

15

12

11

5

4

21

10

21

12

13

10

11

16

17

21

21



1 DOOR

Freezer Door

1) Loosen 2 screws and pull the Lower Cover.2) Loosen hexagonal bolts fixing the lower hinge to the

body to remove the freezer door only.

3) Pull out the Door Gasket to remover from theDoor Foam Assembly, F.

Refrigerator Door

1) Loosen hexagonal bolts fixing the center hinge(Hinge,C) to the body to remove the refrigerator dooronly.

2) Pull out the Door Gasket to remove from theDoor Foam Assembly, R.

2 DOOR SWITCH

1) Loosen four screws in upper part and disconnect top

cover.2) Disconnect Lead Wire from switch.

3) Disengage hook behind the switch by pressing it withhands.

3 REFRIGERATOR LAMP

1) Remove the Cover Lamp by pulling with a slotted typedriver.

2) Remove the lamp by turning.

Bolt

Lower Hinge

Figure 6

GASKET

Figure 7

Hinge, C

Bolt

Figure 8

Figure 9

DISASSEMBLY

- 7 -

Figure 10



4 FAN AND FAN MOTOR

1) Remove freezer drawers.

2) Remove two cap screws and loosen two screws in Grille Fan.3) Pull out the Grille Fan and Shroud.

4) Disconnect the housing of lead wire.

5) Separate the Fan Assembly.

6) Losse 2 screw fixed to the Bracket.

7) Pull out Shroud to remove the Fan Motor Assembly.

8) Separate the Motor Bracket and Rubber.

5 DEFROST CONTROL ASSEMBLY

Defrost Control Assembly consists of Thermistor and Melting

Fuse. Thermistor functions to defrost automatically and it is

attached to metal side of the Evaporator and senses temperature.Melting Fuse is a kind of safety device for preventing overheating

of the Heater when defrosting.

At the temperature of 72°C, it stops the emission of heat from the

Heater.

1) Pull out the Shroud after removing the Grille.

2) Separate the connector connected with the Defrost Control

Assembly and replace new one.

6 DAMPER CONTROL

1) Remove the Cover Lamp and loosen 2 screw.

2) Pull the Control Box and separate the lead wire housing.3) Remove the Cover Lamp.

4) Separate the Insulation Multi Duct and Control Box.

5) Disassemble the Knob.

6) Separate the Damper Control and Control Box.

7) Separate the Damper Control and Resistor.

8) Disconnect the lead wire.

7 HEATER, SHEATH

In this refrigerator, Heater, Sheath is used for defrostingheater. During heating, the temperature of heater rises

about 300~500°C. Therefore, be careful not to burnyourself while servicing.

1) After removing the Grille and Shroud, separate theHeater Sheath by disconnecting the connectors.

2) Exchanged Heater Sheath and connect the housing.

REFRIGERATOR ROOM LAMP

Heater Sheath

GUIDE FAN

FAN

SHROUD

FAN MOTOR

GRILLE

Melting Fuse

Thermistor

Figure 13

Figure 14

Figure 11

Figure 12

- 8 -



1 COMPRESSOR

1) Role

The compressor intakes low temperature and low pressuregas evaporated from evaporator of the refrigerator, andcondenses this gas to high temperature and high pressuregas, and then plays delivering role to Condenser.

2) Composition

The Compressor is composed of compressorapparatus compressing gas, compressor motormoving compressor apparatus, and case protectingcompressor apparatus and motor. There are PTC-Starter, and Over Load Protector (OLP) in theCompressor outside. On the other hand, because theCompressor consists of 1/1000mm processingprecision components and is sealed after production

in absence of dust or humidity, deal and repair withcare.

3) Note for Usage

(1) Be careful not to allow over-voltage and over-current.

(2) Do no strike.

If applying forcible power or strike (dropping or carelessdealing), poor operation and noise may occur.

(3) Use proper electric components appropriate to thecompressor.

(4) Note to Keep Compressor dry.

If compressor gets wet in the rain and rusts in the pin ofhermetic terminal, the result may be poor operationfrom poor contact.

(5) Be careful that dust, humidity, and welding flux don'tflow in the compressor inside in replacing thecompressor. Dust, humidity, and flux due to weldingwhich inflows to cylinder may cause lockage and noise.

2 PTC-STARTER

1) Composition of PTC-Starter

(1) PTC (Positive Temperature Coefficient) is a no-contactsemiconductor starting device which uses ceramicmaterial. This material consists of BaTiO3.

(2) The higher the temperature is, the higher becomes the

resistance value. These features are used as thestarting device for the Motor.

2) Role of PTC-Starter

(1) PTC is attached to hermetic compressor used forrefrigerator, show case and starts motor.

(2) Compressor for household refrigerator applies tosingle-phase induction Motor.

For normal operation of the single-phase inductionmotor, in the starting operation current flows in bothmain coil and sub-coil. After the starting is over, thecurrent in subcoil is cut off. The proper features of PTCplay all the above roles. So, PTC is used as a motorstarting device.

3) PTC-Applied Circuit Diagram

According to Starting Method for the Motor

4) Motor Restarting and PTC Cooling

(1) For restarting after power off during normal compressormotor operation, plug the power cord after 5 min. forpressure balance of refrigerating cycle and PTCcooling.

(2) During normal operation of the Compressor Motor, PTCelements generate heat continuously. Therefore,if PTC isn't cooled for a while after the power has beenshut off, the motor can't operate again.

5) Relation of PTC-Starter and OLP

(1) If the power is off during operation of compressor and

the power is on before the PTC is cooled, (instant shut-off within 2 min. or reconnect a power plug due tomisconnecting), the PTC isn't cooled and a resistancevalue grows. As a result, current can't flow to the sub-coil and the motor can't operate and the OLP operatesby flowing over current in only in the main-coil.

(2) While the OLP repeats on and off operation about 3-5times, PTC is cooled and compressor motor performsnormal operation.

If OLP doesn't operate when PTC is not cooled,compressor motor is worn away and causes a shortcurcuit and fire. Therefore, use a properly fixed OLPwithout fail.

6) Note to Use PTC-Starter(1) Be careful not to allow over-voltage and over-current.

(2) Do no strike.

Don't apply a forcible power or strike.

(3) Keep apart from any liquid.

If liquid such as oil or water enters the PTC,PTC materials may break due to insulation breakdownof the material itself.

(4) Don't change PTC at your convenience.

Don't disassemble PTC and mold. If the exterior of thePTC-starter is damaged, resistance value is altered andit may cause poor starting of the compressor motor.

(5) Use a properly repaired PTC.

PTC STARTER HERMETICTERMINAL

COMPRESSORMOTOR

C

M

S M3 6

5

S

PTC

OVERLOAD PROTECTOR(O.L.P)

RSIR

Figure 19

ADJUSTMENT

- 9 -



3 OLP (OVER LOAD PROTECTOR)

1) Definition of OLP

(1) OLP (OVER LOAD PROTECTOR) is attached to thehermetic compressor and protects the motor by cuttingoff current in compressor motor in case of over-risingtemperature by Bimetal in the OLP.

(2) When over-voltage flows to Compressor motor, thebimetal works by heating the heater inside the OLP,and the OLP protects motor by cutting off current whichflows to the compressor motor.

2) Role of the OLP

(1) The OLP is attached to the hermetic compressor usedfor the refrigerator and show case and prevents themotor coil from being started in the compressor.

(2) Do not turn the adjust screw of the OLP in any way for

normal operation of the OLP.(Composition and connection Diagram of OLP)

CIRCUIT DIAGRAM

CONTACTINGPOINT

COVER

BIMETAL

CONTACTINGPOINT

HEATER

TERMINALS

ADJUSTSCREW

HEATER

BIMETAL

Figure 20

NOTE : This is a basic diagram and specifications vary in different localities.

- 10 -

CNL

3

4

6

5

2

S

BK

PK

RD

BLBLBL

BK

BL

RUNNINGfonctionnement

BL BLBL

RD

GY

BL

BK

PR

GN/YL

RT-SENSORRT-capteur

YL

YLBL

F-SENSORF-capteur

DOOR OPEN/ouverture portière

PERCEPTION/réception

DEF-SENSORDEF-capteur

BOBOBLBL

GYRD

1234

56

GY PR BL YL RD BN WH WHBO

BK GY BN

BK

S T A R T I N G

m i s e e n r o u t e

S H E A T H H E A T E R

m a n c h o n c h a u f f a g e

M

C

PWB ASSY, MAINGROUPE PRINCIPAL PWB

DISPLAY CONTROL P W B

affichage de contrôle P W B

1 2 3 4 5 6 7 8 9

• THE PLUG TYPE,CAPACITOR PART,COMPRESSOR EARTHPART ON CIRCUITDIAGRAM ARE SUBJECTTO CHANGE IN DIFFERENTLOCALITIES AND ACCORDANCEWITH MODEL TYPE

• WHEN STARTING CAPACITORIS NOT USED, NO.3,4 OF PTCSTART IS CONNECTEDINTERNALLY

BK:BLACK

YL:YELLOW

SB:SKY BLUE

BN:BROWN

GN:GREEN

PK:PINK

RD:RED

BL:BLUE

GN/YL:GREEN/YELLOW

BO:BRIGHT ORANGE

PR:PURPLE GY:GRAY

WH/BK:WHITE/BLACK

WH:WHITE

BL YL GY BNBK9 8 7 6 5 4 3 2 1

GY PR BL YL RD BN WH WHBO

1 2 3 4 5 6 7 8 9

B

A

B

A MM

• Le type de prise, les pièces du condensateur, les pièces de mise à terre du compresseur sur le diagramme de circuit sont sujets à des changements dans différentes localités et selon le type de modèle.

• Quand le condensateur de mise en route n'est pas utilisé, le n˚3.4 de mise en route PTC est branché

internement.

BK:noir

YL:jaune

SB:bleu ciel

BN:marron

GN:vert

PK:rose

RD:rouge

BL:bleu

GN/YL:vert/jaune

BO:orange brillant

PR:pourpre GY:gris

WH/BK:noir/blanc

WH:blanc

3854JD1040E

CIRCUIT DIAGRAM/DIAGRAMME DE CIRCUITIRCUIT DIAGRAM DIAGRAMME DE CIRCUIT

COMPRESSORcompresseur

CAPACITOR PARTpièce condensateur

P.T.C STARTERstarter P.T.C

COMP' EARTHterre compresseur

O V E R

L O A D

P R O T E C T O R

p r o t e c t i o n c o n t r e s u r c h a r g e

D O O R S / W - R

p o r t i è r e S / W - R

L A M P - R

l a m p e - R

F U S E - M ( 7 2 ˚ C )

f u s i b l e - M ( 7 2 ˚ C )

F A N

M O T O R

m o t e u r v e n t i l a t e u r

C O O L I N G F

A N

M O T O R

m o t e u r v e n t i l a t e u r d e

r e f r o i d i s s e m e n t

P O W E R

S U P P L Y C O R D

C â b l e d ' a l i m e n t a t i o n



1 COMPRESSOR AND ELECTRIC COMPONENTS

TROUBLESHOOTING (Mechanical Part)

- 11 -

1

2

3

4

5

2

5

5

3

4

5

5

1

43

YES

YES

YES

NO

YES

YES

NO

NO

5

YES

NO

YES

PowerSource.

Remove the PTC-Starter from theCompressor andmeasure the voltagebetween Terminal C ofCompressor andTerminals 5 or 6 of PTC.

No Voltage.

(Rating Voltage±10%)?

Replace OLP.

Reconnect.

ReplacePTC-Starter.

Replace OLP.

O.K.

Check connection

condition.

OLP disconnected?

Advise the customerto use a regularTransformer.

Replace Compressor.

OLP works within30 sec. in forcibleOLP operation byturning instant poweron and off.

Components start inthe voltage of RatingVoltage ±10% below.

Applied voltage isn'tin the range of RatingVoltage ±10%.

Check the resistanceamong M-C, S-C andM-S in MotorCompressor.

Check the resistance oftwo terminals in PTC-Starter.

Check if applyinga regular OLP.

Measure minimumstarting voltage after 5min. for balancing cyclepressure and cooling thePTC.

Check theresistance ofMotorCompressor.

Check theresistance ofPTC-Starter.

Check OLP.

Checkstarting state.



2 PTC AND OLP

- 12 -

YES

NO

6 54

3

Normal operation ofCompressor isimpossible or poor.

Separate the PTC-Starterfrom Compressor andmeasure the resistancebetween No. 5 and 6 (onlyRSIR type) or No. 4 and 5 ofPTC-Starter with a Tester orWhistone Bridge.(Figure 21)

Separate the OLP from theCompressor and check theresistance value betweentwo terminals of OLP witha Tester. (Figure 22)

Observation value is

220V/50Hz : 22Ω±30%

115V/60Hz : 6.8Ω±30%

240V/50Hz : 33Ω±30%

127, 220V/60Hz : 22Ω

±30%

The resistance value is 0or serveral hundreds Ω.

The value is ∞.

Check anotherelectric components.

Replace OLP.

Check anotherelectriccomponents.

ReplacePTC-Starter.

Figure 21 Figure 22



3 OTHER ELECTRIC COMPONENTS

- 13 -

No Cooling.

Compressordoesn't run.

Running state ofcompressor is poor.

Check startingvoltage.

Check if current flows tothe followingcomponents.

a. Thermistor

b. Starting devices

c. OLP

d. Compressor coil

e. Circuit Parts

Low voltage.

Poor contacting.

Shorted or broken.

Poor contactingor shorted.

Coil shorted.

Poor contacting

or shorted.

Poor contactingand broken.

Shorted.

Lack of capacity.

Coil of motorCompressor.

Replacethe compressor.

Replaceeach component.

Raise the voltage.

Replace

each component.

Cause.

Check if current flowsto starting devices.

Check current flowingin sub-coil ofCompressor.

Check capacity of OLP.

The items describedabove are normal.

Cooling ability is poor

Fan motordoesn't run.

Much frost are stickedto the EVAPORATOR.

Poor contacting.

Coil is shorted.

Shorted.

Replacethe Heater Sheath



Check current flowingin DOOR SWITCH.

Check current flowing in theFAN MOTOR is stuck.

Check current flowingof the followingcomponents.• THERMISTOR• MELTING FUSE

Check current flowingof the followingcomponents.

• HEATER, SHEATH



4 SERVICE DIAGNOSIS CHART

COMPLAINT POINTS TO BE CHECKED REMEDY

Cooling is • Is the power cord unplugged from the outlet? • Plug in to the outlet.impossible. • Check if the power switch is set to OFF. • Set the switch to ON.

• Check if the fuse of power switch is shorted. • Replace a regular fuse.• Measure the voltage of power outlet. • If voltage is low, wire newly.

Cooling ability • Check if the set is placed close to wall. • Place the set with the space of about 10cm.is poor. • Check if the set is placed close to stove, gas • Place the set apart from these heat

• cooker and direct rays. • appliances.• Is the ambient temperature high or • Make the ambient temperature below.• the room door closed?• Check if put in is hot. • Put in foods after cooled down.• Did you open the door of the set too often • Don't open the door too often and close• or check if the door is closed up? • it firmly.• Check if the Damper Control is set to cold-position. • Set the control to mid-position.

Foods in the • Is foods placed in cooling air outlet? • Place foods in high temperature section.Refrigerator • (Front Part)are frozen. • Check if the control is set to cold-position. • Set the control to mid-position.

• Is the ambient temperature below 5°C? • Set the control to warm-position.

Dew or ice • Is liquid food stored? • Seal up liquid foods with wrap.forms in the • Check if put in is hot. • Put in foods after cooled down.chamber of • Did you open the door of the set too • Don't open the door too often and closethe set. • often or check if the door is closed. • it firmly.

Dew forms • Check if ambient temperature and humidity • Wipe dew with a dry cloth. This occurrencein the Exterior Case. of surroumcling air are high. • is solved naturally in low temperature and humidity.

• Is something in the door holding it open? • Rearrange items to close door.

Abnormal • Are the set positioned in a firm and even place? • Adjust the adjust screw and position

noise generates. • in the firm place.• Are any unnecessary objects set • Remove the objects.• in the back side of the set?• Check if the Tray Drip is not firmly fixed. • Fix i t fi rmly on the original position.• Check if the cover of mechanical room • Place the cover at the original position.• in below and front side is taken out.

To close the door • Check if the door packing is has something • Clean the door packing.is not handy. • spilled on it.

• Is the set positioned in a firm and even place? • Position in the firm place and adjust the• adjust screw.

• Is the refrigerator overloaded? • Keep foods not to reach the door.

Ice and foods • Check if the inside of the set is dirty. • Clean the inside of the set.smell unpleasant. • Did you keep aromatic foods without wrapping? • Wrap aromatic foods.

• It smells of plastic. • The new products smells of plastic, but it is

• eliminated after 1-2 weeks.

In addition to the items described left, refer to the followings to solve the complaint.

Check if dew forms inthe freezer.

Replace thecomponents ofdefrosting circuit.

Check refrigeratingcycle.

Check thedamper control

Defrostingis poor.

The cycleis faulty.

Repair the cycle.

Replace thedamper control

The operation ofthe dampercontrol is poor.

- 14 -



5 REFRIGERATING CYCLE

Troubleshooting Chart

Leakage Detection

Observe discharging point of refrigerant which may be in the oil discharging part in the compressor and hole of evaporator.

- 15 -

YES

YES

Whether compressorruns or not.

Whether frost

forms or not inevaporator.

Observe the dischargedamount of refrigerant.

Inject refrigerant to compressorand check cooling operation.

Clogged by dust. Gas leakage.

Faultycompressor.

Moisture clog.

Whether oilleaks or not.

Frost formed normally

Normal amount

No or much amount

(Check the leakage point)Frost formed normally

No frostor formsin inlet only

Check compressor

PARTIAL Freezer room and Low flowing sound of A little high • A little refrigerantLEAKAGE refrigerator refrigerant is heard and more than • discharges.

don't cool frost forms in inlet only ambient • Normal cooling is possiblenormally. temperature. • when injecting of refrigerant

• the regular amount.

WHOLE Freezer and Flowing sound of refrigerant Equal to ambient • No discharging of refrigerant.LEAKAGE refrigerator is not heard and frost isn't temperature. • Normal cooling is possible

don't cool formed. • when injecting of refrigerant

normally. • the regular amount.

PARTIAL Freeze room and Flowing sound of refrigerant A little high • Normal discharging ofCLOG refrigerator is heard and frost forms more than • refrigerant.

don't cool in inlet only. ambient • The capillary tube is faulty.normally. temperature.

WHOLE Freezer and Flowing sound of refrigerant Equal to ambient • Normal discharging ofCLOG refrigerator is not heard and frost isn't temperature. • Refrigerant.

don't cool. formed.

MOISTURE Cooling operation Flowing sound of refrigerant Lower than • Cooling operation restartsCLOG stops periodically. is not heard and frost melts. ambient • when heating the inlet of

temperature • capillary tube.

COMP- Freezer and Low flowing sound of A little higher • The pressure of highRESSION refrigerator refrigerant is heard and than ambient • pressure part in

don't cool. frost forms in inlet only. temperature. • compressor is low.

NO COMP- No compressing Flowing sound of refrigerant Equal to ambient • No pressure of high pressureRESSION operation. is not heard and no frost. temperature. • part in the compressor.

CAUSETEMPERATURE

OF THECOMPRESSOR

REMARKSSTATE OFTHE SET

STATE OF THEEVAPORATOR

L E A K A GE

C L O G GE D

B Y

D U S T

D E F E C T I V E

C OMP R E S S I ON



NO. ITEMS CONTENTS AND SPECIFICATIONS REMARKS

WELDING (1) H 30

ROD (1) • Chemical Ingredients • Recommend H34 containing 34% Ag in the

(1) • Ag: 30%, Cu: 27%, Zn: 23%, Cd: 20% • Service Center.

(1) • Brazing Temperature: 710~840°C

(2) Bcup-2

(1) • Chemical Ingredients

(1) • Cu: About 93%

(1) • P: 6.8~7.5%

(1) • The rest: within 0.2%

(1) • Brazing Temperature: 735~840°C

FLUX (1) • Ingredients and how to make • Make amount for only one day. (1 )

(1) ••Borax 30% • Holding period: 1 day

(1) ••Borax 35% • Close the cover of container to prevent dust

(1) • Fluoridation kalium: 35% • putting in the FLUX.

(1) • Water: 4% • Keep it in a stainless steel container.

(1) • Mix the above ingredients and boil until

(1) • they are transformed into liquid.

DRIER (1) Assemble the drier within 30min. • Don't keep the drier outdoors because

ASSEMBLY (1) after unpacking. • humidity damages to it.

(2) Keep the unpacked drier at the temperature

of 80~100°C.

VACUUM (1) When measuring with pirant Vacuum • Apply M/C Vacuum Gauge without fail.

(1 )gauge the charging M/C, vacuum • Perform vacuum operation until a proper

(1 )degree is within 1 Torr. • vacuum degree is built up.

(2) If the vacuum degree of the cycle inside is • If a proper vacuum degree isn't built up,•

(2) 10 Torr. below for low pressure and 20 Torr. • check the leakage from

(2) for high pressure, it says no vacuum • the Cycle Pipe line part and

(2) leakage state. • Quick Coupler Connecting part.

(3) Vacuum degree of vacuum pump must be

(3) 0.05 Torr. below after 5 min.

(4) Vacuum degree must be same to the

value described item (2) above for more than

20 min.

(1) The pressure of dry air must be more

than 12~16kg/cm2

(2) Temperature must be between

-20~and 70°C.

(3) Keep the pressure at 12~6kg/cm2 also

(3) when substituting dry air for Nitrogen Gas.

NIPPLE (1) Check if gas leaks with soapy water. • Check if gas leaks from joint of the

AND (2) Replace Quick Coupler in case of leakage. • Coupler.

COUPLER

PIPE (1)• Put all Joint Pipes in a clean box and

(1)• cover tightly with the lid so that dust or

(1)• humidity is not inserted.

1

2

3

4

5

6

7

DRY AND

AIR

NITROGEN

GAS

General Control of Refrigerating Cycle

- 16 -



NOTCH

TEMP(˚C)

ROOM

Min Min/ Mid

Mid Mid/ Max

Max

-15 -16.5 -18 -19.5

FREEZER

VACATION FREEZE TEMP QUICK FREEZE

-22

This description is made for GR-349 & 389. Please refer to overall PCB circuits for other models.

1 FUNCTION EXPOSITION

1) FUNCTION

(1) The refrigerator starts from optimum condition when electric power is first on. The operation condition changesMid Mid/Max Max Min Min/Mid Mid whenever you press the FREEZE TEMP button.

(2) It returns to Mid conditions if power off and on again.

MICOM FUNCTION & PCB CIRCUIT EXPLANATION

- 17 -

2) QUICK FREEZER(1) This raises the freezing speed by operating the compressor continuously. Press the QUICK FREEZE button and

the QUICK FREEZE LED is displayed. Then after 3 hours' successive operation of compressor operation, the QUICKFREEZING function will be released.

(2) Defrosting during the QUICK FREEZING operates as follows!When the QUICK FREEZING time is below 90 minutes, defrost and then operate the QUICK FREEZING for theremaining time. When the QUICK FREEZING time is over 90 minutes, defrost and then operate the QUICK FREEZINGfor 2 hours

(3) If QUICK FREEZE button is pressed during defrosting, the QUICK FREEZE LED is lit. The QUICK FREEZING operatesfor 3 hours after 7 minutes from the end of defrosting.

(4) If VACATION button is pressed during the QUICK FREEZING, the QUICK FREEZING LED function is released.

(5) If power is interrupted during QUICK FREEZING, the QUICK FREEZING function is released.

3) VACATION FUNCTION

(1) Function for Energy Saving. Press the VACATION button, and the VACATION LED is displayed and this function isoperated.

(2) Freezer Compartment is not kept by compressor at the notch displayed but at -13°C± differential.

(3) Defrosting and fan control are same as normal operation.

(4) If QUICK FREEZE button is pressed during the VACATION FUNCTION, VACATION FUNCTION is released.

(5) If power is interrupted during VACATION FUNCTION, the VACATION FUNCTION is released.



4) DOOR OPENING ALARM

(1) When the REFRIGERATOR DOOR is opened and isn't closed after 1 minute, the BUZZER sounds.(2) At frist, BUZZER sounds three times at each intervals of 0.5 second, then makes a 0.5 second ON/OFF alarm three

times at intervals of 30 seconds.

(3) If the REFRIGERATOR door closed during ALARM, the ALARM cancels.

5) DISPLAY BUTTON RING

(1) If display function button (FREEZE TEMP, QUICK FREEZE, VACATION) of the front of the TOP COVER is pushed,BUZZER rings with DING~ DONG~ (See the BUZZER OPERATION CHECK p.22)

6) DEFROSTING

(1) If the accumulated time for the operation of the COMPRESSOR is 7 hours, the DEFROSTING HEATER is started.

(2) The first defrosting is performed 4 hours (compressor ON) later since the power is on.

(3) If DEFROST SENSOR is over 7 °C during DEFROSTING, end the operation of DEFROSTING with DEFROSTINGHEATER paused, and after 7 minutes, the operation for the freezing is started.

If DEFROST SENSOR is not reach to 7 °C after 2 hours' operation of the defrosting heater, it indicates a defrostingtrouble. (See the TROUBLE REPRESENTING FUNCTION)

(4) If DEFROST SENSOR is short or open, defrosting is not performed.

7) ORDERLY OPERATION OF ELECTRIC PARTS

To avoid NOISE and DAMAGE, the items containing an electric parts such as compressor, DEFROSTING HEATER, andFAN MOTOR operate in order as follows.

- 18 -

CLOSE OPEN CLOSE OPEN CLOSE

BUZZER

within1 minute

1 minute 30seconds

30seconds

three

times

three

times

three

times

FREEZER

DOOR

OPERATION STATE OPERATION ORDER

WHEN DEFROST SENSORTEMPERATURE IS OVER7°C. (WHEN PURCHASINGOR MOVING)

WHEN DEFROST SENSORTEMPERATURE IS BELOW7°C. (WHEN POWERFAILURE OR SERVICING)

WHEN RETURNING TO NORMALSTATE FROM TEST MODE

POWER COMP FANON ON ON

after 0.5 sec. after 0.5 sec.

All Elec. Parts COMP FANOFF ON ON

after 7 min . after 0.5 sec.

POWER DEFROSTING DEFROSTINGON HEATER ON HEATER ON

after 0.5 sec. after 10 sec.

COMP FANON ON

after 0.5 sec. after 0.5 sec.

WH E N P L U G GE D A T F I R S T



8) SELF-TEST

(1) Function to make service easy in case of occuring a trouble in the product.

(2) When a trouble occurs, the button is pushed, but the function doesn't operate.(3) If a problem releases during the representation of trouble, a refrigerator performs the normal function (RESET).

(4) Error codes are displayed by FREEZE TEMP LEDs on TOP COVER. If ERROR occurs, the other LEDs except ERRORCODE LEDs are all off.

ERROR CODE LEDs THIS IS WHAT HAPPENS!NO. ITEMS

F1 F2 F3 F4DESCRIPTION

COMP FAN DEFROST HEATER

1 FREEZER FREEZER SENSOR open

SENSOR abnormal or short.O O

2 DEFROST DEFROST SENSOR open

SENSOR abnormal or short. O O No defrosting

3 DEFROSTING DEFROST HEATER,FUNCTION TEMP. FUSE open oris abnormal disconnection (Displayed

after at least 4 hoursO O O

from the trouble'soccurring.)

4 RT-SENSOR NOTE 1) Room Temperatureabnormal SENSOR open or short

O O O

- 19 -

VACATION FREEZE TEMP QUICK FREEZE

F1

ERROR CODE LEDs

F2 F3 F4

15 minutes On/

15 minutes Off

* NOTE 1) Press the QUICK FREEZE and FREEZE TEMP buttons together in normal operation,get this result.

If normal, LEDs on the TOP COVER is all on.If abnormal, LEDs are all on except VACATION LED.RT-SENSOR

:ONO : OPERATE NORMAL

:OFF



9) FUNCTION TEST

(1) Function to check the testing function of PCB and refrigerator and to find where the trouble.

(2) The test switch is on the MAIN PCB of refrigerator.TEST FUNCTION is released and RESET after MAX. 2 hours, regardless of TEST MODE.

(3) If the buttons on TOP COVER is pushed during TEST MODE, Function is not operated and only BUZZER ring withDING~ DONG~

(4) After the end of TEST MODE, pull out the power cord and plug it in again (RESET).

(5) If a ERROR occurs during the TEST MODE, TEST FUNCTION is released and DISPLAY LEDs represent ERRORCODE.

(6) If the TEST swithch is pushed during ERROR CODE, TEST FUNCTION is not operated.

MODE OPERATION CONTENTS REMARKS

TEST 1 Press TEST button 1. COMPRESSOR OPERATES CONTINOUSLY.once. 2. FAN OPERATES CONTINOUSLY.

3. DEFROSTING HEATER OFF4. ALL DISPLAY LEDS ON.

TEST 2 Press TEST button 1. COMPRESSOR OFF. If DEFROST HEATERonce in the state of 2. FAN OFF. is over 7°C, it returnsTEST MODE 1. 3. DEFROST HEATER ON. to the NORMAL STATE.

4. ALL THE DISPLAY LEDS OFF EXCEPTQUICK FREEZE AND VACATION LEDS.

NORMAL Press TEST button Return to the initial condition. Compressor startsSTATE once in the state of (RESET) after 7 minutes.

TEST MODE 2.

- 20 -

• LED Check Function : Press the QUICK FREEZE and FREEZE TEMP buttons at the same time. After 1 sec., all theLEDs of the DISPLAY are ON simultaneously. Release the BUTTON to return to the previouscondition.



2 FUNCTION DESCRIPTION

1) ELECTRIC CIRCUITS

TRANS secondary side is composed of electric power circuits for RELAY driving electricity (12Vdc) and for supplyingelectricity to MICOM and IC (5Vdc). The voltage in each part is as follows.

VA1 is the part to protect over voltage and noise. When more than 385V is applied, the thermal-fuse (130°C cut-off, localoption) in a first part of TRANS is cut so that the elements in the secondary side of TRANS are protected.

2) OSCILLATION CIRCUIT

CIRCUIT for CLOCK which motivates the internal local element of IC1 to transmit and receive information and BASIC TIMEfor calculating time. Use a proper form for OSC 1. In the event that SPECIFICATION is changed, the calculated time in IC1

is changed or IC1 isn't able to operate.

3) RESET CIRCUIT

All the internal parts of MICOM (IC1) return to the initial condition at power ON in MICOM after temporary power failure.As a result, all the functions operate acording to the early condition. At the early period of power ON the LOW voltage isapplied in the RESET terminal of MICOM for the fixed time. The RESET terminal is 5 V during the general operation.

- 21 -

PARTS both ends of VA1 both ends of CM1 both ends of CM2 both ends of CE2 both ends of CC2

VOLTAGE 230Vac 14Vac 17Vdc 12Vdc 5Vdc



4) LOAD/BUZZER OPERATION, DOOR OPENING SENSING CIRCUIT

(1) LOAD OPERATION CHECK

ƒUIf the DOOR-R is opened during FAN MOTOR is operated, FAN MOTOR is stopped immediately.

ƒUThe A , B of DOOR S/W-R is connected DOOR OPEN DETECTION CIRCUIT as follow.

ƒUIf the DOOR-R is opened or closed, then the DOOR S/W-R is ON/OFF, and the LAMP-R is ON/OFF,and at the same time, S/W of the A , B of DOOR S/W-R for detection of DOOR-R open is ON/OFF.

(2) DOOR OPENING PERCEPTION CHECK

*NOTICE: If you change DOOR S/W-R, you must use a component of the right PART NUMBER. There is a similar typeDOOR S/W-R of NOT MICOM MODEL, and its logic of the A , B of DOOR S/W-R is reversed.

ƒUEven though LAMP-R is operated a normal ON/OFF according to DOOR S/W-R, the MICOM can't detect a

DOOR-R opened or closed of lead wire of the A , B is abnormal or S/W of the A , B of DOOR S/W-R is abnormal.ƒUWhen DOOR-R open isn't detected : Even though DOOR-R is opened, FAN MOTOR couldn't stop.

When DOOR-R close isn't detected : Even though DOOR-R is closed, BUZZER sounds a DOOR OPEN ALARM.check a lead wire of the A , B and DOOR S/W-R.

- 22 -

KIND OF LOADCOMPRESSOR,

FAN MOTOR DEFROSTING HEATERCOMPRESSOR COOLING FAN

MEASURING POINT (IC5) No.13 No.14 No.15

ON below 1VSTATE

OFF 12V

MEASURING POINTNO.6 OF IC 1 (MICOM)

REFRIGERATOR DOOR

CLOSE 5V(S/W of A , B is OFF state)

OPEN 0V(S/W of A , B is ON state)



(3) BUZZER OPERATION CHECK

- 23 -

DISPLAY FUNCTION BUTTON RING DOOR OPEN ALARM

(DING~ DONG~) (SCREECHING)OFF

IC1 (No.14 Pin) ov

IC1 (No.13 Pin) ov

MEASURINGPOINT

CONDITIONS

0.05s 0.2s 0.1s 1s

0V

5V

0V

5V

0V

5V

0V

5V

0.5s 0.5s

2.66khz (DING~) 2.232khz (DONG~) 3.1khz OFF



5) TEMP SENSOR CIRCUITS

The above circuit reads the surrounding temperature, DEFROSTING temperature, and FREEZER ROOM temperature intoMICOM (IC1). OPEN or SHORT state of each SENSOR is as follows.

6) SWITCH INPUT CIRCUIT

The following circuit is a test switch input circuit for checking the refrigerator.

- 24 -

(RT– SENSOR)

(DEFROST SENSOR)

(FREEZER COMPARTMENT SENSOR)

SENSOR CHECK POINT NORMAL (-30 °C~50 °C) SHORT OPEN

ROOM TEMPERATURESENSOR

POINT A Voltage

DEFROST SENSOR POINT B Voltage 0.5 V ~ 4.5 V 0 V 5 V

FREEZER SENSOR POINT C Voltage



7) TEMPERATURE COMPENSATION

• TEMPERATURE COMPENSATION TABLE by adjusting resistance values. (the temperature difference compared to thepresent temp.)

eg) If the compensation resistance of freezer compartment is changed from 10K (present resistance) to 18K (revisedresistance), the temperature of freezer compartment goes up by +2°C.

- 25 -

FREEZER TEMPERATURECOMPENSATION

FREEZER ROOM

RESISTANCE VALUES(R1) TEMPERATURE COMPENSATION REMARKS

180 kΩ + 5.0°C COMPENSATE WARMLY

56 kΩ +4.0°C

33 kΩ +3.0°C

18 kΩ +2.0°C

12 kΩ +1.0°C

10 kΩ 0°C STANDARD

8.2 kΩ -1.0°C

5.6 kΩ -2.0°C

3.3 kΩ -3.0°C

2 kΩ -4.0°C

470 Ω -5.0°C COMPENSATE COOLLY



• TEMPERATURE COMPENSATION OF FREEZER ROOM

• This circuit is aimed to input the necessary temperature compensation values into the MICOM in order to adjust the freezertemperature which is different in each model.

- 26 -

Revised resistance

470 Ω 2 kΩ 3.3 kΩ 5.6 kΩ 8.2 kΩ 10 kΩ 12 kΩ 18 kΩ 33kΩ 56 kΩ 180 kΩPresent resistance

NOT1 °C↑ 2 °C↑ 3 °C↑ 4 °C↑ 5 °C↑ 6 °C↑ 7 °C↑ 8 °C↑ 9 °C↑ 10 °C↑

470 Ω COMPENSATE

1 °C↓ NOT

1 °C↑ 2 °C↑ 3 °C↑ 4 °C↑ 5 °C↑ 6 °C↑ 7 °C↑ 8 °C↑ 9 °C↑2k Ω COMPENSATE

2 °C↓ 1 °C↓ NOT

1 °C↑ 2 °C↑ 3 °C↑ 4 °C↑ 5 °C↑ 6 °C↑ 7 °C↑ 8 °C↑3.3 kΩ COMPENSATE

3 °C↓ 2 °C↓ 1 °C↓ NOT

1 °C↑ 2 °C↑ 3 °C↑ 4 °C↑ 5 °C↑ 6 °C↑ 7 °C↑5.6 kΩ COMPENSATE

4 °C↓ 3 °C↓ 2 °C↓ 1 °C↓ NOT 1 °C↑ 2 °C↑ 3 °C↑ 4 °C↑ 5 °C↑ 6 °C↑8.2 kΩ COMPENSATE

FREEZER5 °C↓ 4 °C↓ 3 °C↓ 2 °C↓ 1 °C↓

NOT1 °C↑ 2 °C↑ 3 °C↑ 4 °C↑ 5 °C↑

ROOM 10 kΩ COMPENSATE

(R1)6 °C↓ 5 °C↓ 4 °C↓ 3 °C↓ 2 °C↓ 1 °C↓

NOT1 °C↑ 2 °C↑ 3 °C↑ 4 °C↑

12 kΩ COMPENSATE

7 °C↓ 6 °C↓ 5 °C↓ 4 °C↓ 3 °C↓ 2 °C↓ 1 °C↓ NOT

1 °C↑ 2 °C↑ 3 °C↑18 kΩ COMPENSATE

8 °C↓ 7 °C↓ 6 °C↓ 5 °C↓ 4 °C↓ 3 °C↓ 2 °C↓ 1 °C↓ NOT

1 °C↑ 2 °C↑33 kΩ COMPENSATE

9 °C↓ 8 °C↓ 7 °C↓ 6 °C↓ 5 °C↓ 4 °C↓ 3 °C↓ 2 °C↓ 1 °C↓ NOT 1 °C↑56 kΩ COMPENSATE

10 °C↓ 9 °C↓ 8 °C↓ 7 °C↓ 6 °C↓ 5 °C↓ 4 °C↓ 3 °C↓ 2 °C↓ 1 °C↓ NOT

180 kΩ COMPENSATE



8) LIGHTING CIRCUITS OF KEY BUTTON INPUT AND DISPLAY PARTS

The above circuit is to judge the operation conditions of function key and to light each function indicating LED. It is operatedby SCAN method.

- 27 -

FREEZER TEMPCONTROL KEY

DISPLAY PART



3. SENSOR RESISTANCE CHARACTERISTICS TABLE

• The tolerance of sensor resistance is ±5%.

• Be sure to measure the sensor resistance after keeping the sensor more than 3 minutes at a measuring temperature.(It needs delay due to sensor speed.)

• Measure the resistances of SENSORs with a digital tester after disconnecting CON 4 of MAIN PWB ASSY.

- 28 -

MEASURED TEMPERATURE RESISTANCE OF FREEZER SENSOR RESISTANCE OF DEFROST SENSOR, ROOM TEMPERATURE SENSOR

-20°C 22.3kΩ 77kΩ

-15°C 16.9kΩ 60kΩ

-10°C 13.0kΩ 47.3kΩ

-5°C 10.1kΩ 38.4kΩ

0°C 7.8kΩ 30kΩ

+5°C 6.2kΩ 24.1kΩ

+10°C 4.9kΩ 19.5kΩ

+15°C 3.9kΩ 15.9kΩ

+20°C 3.1kΩ 13kΩ

+25°C 2.5kΩ 11kΩ

+30°C 2.0kΩ 8.9kΩ

+40°C 1.4kΩ 6.2kΩ

+50°C 0.8kΩ 4.3kΩ



4. MAIN PWB ASSEMBLY AND PARTS LIST

1) MAIN PWB ASSEMBLY

- 29 -

D I P

CE1

+

CM1

CM2

+

+

CE2

CE6

CE3

+J06 J07

J01

+

IC3

CC1 CC2

CE4

+

CE5

D5

OP2

R21

OP1

R20

CC4

R6

CC10

R19

J05

J10

J11

J02 R7 J 04 RF3

R10

R1

CC8

CC7

R16

R15

R17

RF2

RF1

TEST

R13

R12

R11

IC4

J09

IC1

CC3

J08

6871JB1037

STICKER

J12

Q1

J13

Q2

J14

Q3

R14

CC6

CC5

OSC1R8

R9

CC9

1

D

6

R-DOOR F

CON3

RT-SENSOR

9 1CON2

98 12

COMP F-FAN D-HEATER

CON1

VA1

RY2 RY3RY1

D8

D7

J15

D6R4 R1 8 R3

BUZZER

Q4

IC6

TRANS

D1 D3 D4 D2

IC2



2) REPLACEMENT PARTS LIST

- 30 -



3) PWB ASSEMBLY, DISPLAY AND PARTS LIST

- 31 -



5. PWB circuit drawing- The PWB circuit drawing may change without notice.

- 32 -



- 33 -



1.Ref. No : GR-349****

EXPLODED VIEW & REPLACEMENT PARTS LIST

- 34 -

103A

103B

503B

406B

114A

102B

109C

102A

120D

120B120E

501A

120C 120A

282B

283B

104C

106B

104A

109A

109B

103C

301A

418A

401A

104C

106B

104A

315A

315B

315C

315B315C

319A 319C

328A327A

420A329C

323B

310A

308A

309A314A

312A

317A

307A

318A

105A

304A

411A

404A405A

329A

332A

409B

330B

405C

281B

281F

610E

108A

604F

120H



- 35 -

249A

136E

136F

155A

140A

151A

151B

241A

235A

249C

241A

237A

241C

136A

125A

136B

136C

136D

233A231A

210A

210A

249B

230A

203A201A

200A

281D



P/No. 3828JD8351K JUN., 2001 Printed in Korea

lrbp1031xx lg 10 cu. ft refrigerator service manual

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