service manual

REFRIGERATOR

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE UNIT,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

MODELS:

LFC22760**

CONTENTS

SAFETY PRECAUTIONS --------------------------------------------------------------------------------------------

SPECIFICATIONS ------------------------------------------------------------------------------------------------------

PARTS IDENTIFICATION --------------------------------------------------------------------------------------------

DISASSEMBLY ----------------------------------------------------------------------------------------------------------

DOOR ------------------------------------------------------------------------------------------------------------------

DOOR ALIGNMENT ------------------------------------------------------------------------------------------------

FAN AND FAN MOTOR --------------------------------------------------------------------------------------------

DEFROST CONTROL ASSEMBLY -----------------------------------------------------------------------------

LAMP -------------------------------------------------------------------------------------------------------------------

CONTROL BOX - REFRIGERATOR ---------------------------------------------------------------------------

MULTI DUCT ----------------------------- ---------------------------------------------------------------------------

ADJUSTMENT -----------------------------------------------------------------------------------------------------------

COMPRESSOR -----------------------------------------------------------------------------------------------------

PTC-STARTER ------------------------------------------------------------------------------------------------------

OLP (OVERLOAD PROTECTOR) ------------------------------------------------------------------------------

TO REMOVE THE COVER PTC ---------------------------------------------------------------------------------

CIRCUIT DIAGRAM -----------------------------------------------------------------------------------------------------

TROUBLESHOOTING --------------------------------------------------------------------------------------------------

COMPRESSOR AND ELECTRIC COMPONENTS ---------------------------------------------------------

PTC AND OLP -------------------------------------------------------------------------------------------------------

OTHER ELECTRICAL COMPONENTS ----------------------------------------------------------------------

SERVICE DIAGNOSIS CHART ---------------------------------------------------------------------------------

REFRIGERATION CYCLE ---------------------------------------------------------------------------------------

OPERATION PRINCIPLE& REPAIR METHOD OF ICE MAKER -------------------------------------------

DESCRIPTION OF FUNCTION & CIRCUIT & CIRCUIT OF MICOM -------------------------------------

REFRIGERATOR EXPLODED VIEW & SERVICE PARTS LIST ------------------------------------------

9

10

11

11

12

8

9

8

8

13

14

15

17

20

41

7

7

6

7

7

7

4

5

2

3

5

SAFETYPRECAUTIONS

Pleasereadthefollowinginstructionsbeforeservicingyour refrigerator.

1.Checktherefrigeratorforcurrentleakage.

2.Topreventelectricshock,unplugbeforeservicing.

3.Alwayschecklinevoltageandamperage.

4.Usestandardelectricalcomponents.

5.Don'ttouchmetalproductsinthefreezerwithwet hands.Thismaycausefrostbite.

6.Preventwaterfromspilingontoelectricelementsorthe

machineparts.

7.Beforetiltingtherefrigerator,removeallmaterialsfrom onorintherefrigerator.

8.Whenservicingtheevaporator,wearglovestoprevent injuriesfromthesharpevaporatorfins.

9.Serviceontherefrigeratorshouldbeperformedbya

qualifiedtechnician.Sealedsystemrepairmustbe

performedbyaCFCcertifiedtechnician.

-2-

1. SPECIFICATIONS

22 cu. Ft. (22.4 cu. Ft.)

ITEMS

DOOR DESIGN

DIMENSIONS

SPECIFICATIONS

Side Rounded

W(836)x D(870)x H(1754) mm

W(32.91)x D(34.25)x H(69.06) i n

NET WEIGHT

COOLING SYSTEM

TEMPERATURE CONTROL

DEFROSTING SYSTEM

DOOR FINISH

HANDLE TYPE

INNER CASE

INSULATION

127.5 Kg

281.09 pounds

Fan Cooling

Micom Control

Full Automatic

Heater Defrost

Embossed Metal, PCM Smooth,

Stainless

Bar

ABS Resin

Polyurethane Foam

ITEMS

VEGETABLE TRAY

COMPRESSOR

EVAPORATOR

CONDENSER

REFRIGERANT

LUBRICATING OIL

DEFROSTING DEVICE

REFRIGERATOR

LAMP

FREEZER

SPECIFICATIONS

Opaque Drawer Type

PTC Starting Type

Fin Tube Type

Wire Condenser

R-134a (120 g)

ISO10 (220 ml)

SHEATH HEATER

60 W (2EA)

60 W (1EA)

- 3-

2. PARTS IDENTIFICATION

I

J

A

B

G

H

E

F

C

D

K

L

M

N

O

P

Q

Use this section to become more familiar with the parts and features.

NOTE: This guide covers several different models. The refrigerator you have purchased may have some or all of the items listed below. The locations of the features shown below may not match your model.

A

B

C

Shelves

D

E

Digital Sensor Control

Refrigerator Light

Temperature Contro*l

K

Divider

*

Chef Fresh / Snack Pan

F

Can Dispenser

G

Optibin Crisper

Keeps fruits and vegetable fresh and crisper

H

Customcube Icemaker*

I

Ice Tray *

J

Durabase

- 4 -

L

Filter (Inside)*

M

Dairy Bin

N

Egg Box

O

Refrigerator Door Rack

P

Freezer Light

Q

Pull out Drawer

*on some models

3. DISASSEMBLY

3-1 DOOR

Left Door

Loosen the cover screw (1).

Disconnect door switch wire (2).

Loosen hinge bolts (3).

Lift off the top hinge (4).

Place the door on a non-scratching surface with the inside up.

Right Door

Loosen the cover screw (1).

Disconnect door switch wire (2).

Disconnect wire harness (5).

Loosen hinge bolts (3).

Loosen ground screw (6).

Lift off the top hinge (4).

Place the door on a non-scratching surface with the inside up.

2. Remove gasket bracket clips

There are two clips on each door. Start bracket removal near one of the middle clips.

1) Pull gasket back to expose gasket bracket clip and door frame.

2) Insert a flat tip screwdriver into seam between gasket bracket and door frame and pry back until clips snaps out.

3) Continue prying back along seam until all clips snap out.

Door

Frame

Gasket

Bracket Clip

Figure 3

Flat Tip

Screwdriver

Gasket

Bracket

3. Remove gasket

Pull gasket free from gasket channel on the three remaining sides of door.

Left

Figure 1

Right

Figure 4

Door Gasket Replacement

1. Insert gasket bracket clips

1) Insert gasket bracket edge beneath door frame edge.

2) Turn upper gasket bracket spring so that both spring ends are in the door channel.

3) Push in clip until you hear it snap securely into place.

Door Gasket Removal

1. Remove door frame cover

Starting at top of cover and working down, snap cover out and away from door.

Frame Cover

Handle

Figure 2

Gasket

Bracket Clip

Spring

Door

Frame

Correct Incorrect

Figure 5

- 5-

4) Push in remaining two clips until you hear each snap securely into place.

Note: Make sure that no part of gasket bracket edge protrudes from beneath door frame edge.

2. Insert gasket into channel

1) Snap gasket assembly into the door bracket.

<Inserting the Gasket Assembly into the Bracket Door>

3-2 DOOR ALIGNMENT

If the space between your doors is uneven, follow the instructions below to align the doors:

1. With one hand, lift up the door you want to raise at middle hinge.

2. With other hand, use pliers to insert snap ring as shown.

3. Insert additional snap rings until the doors are aligned.

(Three snap rings are provided with unit.)

Correct

Incorrect

Figure 6

2) Press gasket into channels on the three remaining sides of door.

Figure 7

3. Replace door frame cover

Starting at top of cover and working down, snap cover back into door.

Figure 9

Figure 8

- 6 -

3-3 FAN AND FAN MOTOR

1. Remove the freezer shelf. (If your refrigerator has an icemaker, remove the icemaker first)

2. Remove the plastic guide for slides on left side by unscrewing phillips head screws.

3. Remove the grille by removing one screw and pulling the grille forward.

4. Remove the Fan Motor assembly by loosening 2 screws and disassembling the shroud.

5. Pull out the fan and separate the Fan Motor and Bracket.

FAN MOTOR

BRACKET

MOTOR

3-5-1 Refrigerator Compartment Lamp

1. Unplug the power cord from the outlet.

2. Remove refrigerator shelves.

3. Release the hooks on both ends of the lamp shield and pull the shield downward to remove it.

4. Turn the lamp counterclockwise.

5. Assembly is the reverse of disassembly. Replacement bulb must be the same specification as the original

(Max. 60 W2EA).

FAN

Figure 15

GRILLE

Figure 11

3-4 DEFROST CONTROL ASSEMBLY

Defrost Control assembly consists of Defrost Sensor and

FUSE–M.

The Defrost Sensor works to defrost automatically. It is attached to the metal side of the Evaporator and senses its temperature. At 72°C, it turns the Defrost Heater off.

Fuse-M is a safety device for preventing over-heating of the Heater when defrosting.

1. Pull out the grille assembly. (Figure 12)

2. Separate the connector with the Defrost Control assembly and replace the Defrost Control assembly after cutting the Tie Wrap. (Figure 13)

GRILLE ASSEMBLY

DEFROST-CONTROL

ASSEMBLY

3-5-2 Freezer Compartment Lamp

1. Unplug refrigerator or disconnect power.

2. Reach behind light shield to remove bulb.

3. Replace bulb with a 60-watt appliance bulb.

4. Plug in refrigerator or reconnect power.

3-6 CONTROL BOX-REFRIGERATOR

1. First, remove all shelves in the refrigerator, than remove the Refrigerator control Box by loosening 2 screws.

CONTROL BOX

3-5 LAMP

Figure 12 Figure 13

COVER LAMP

Figure 16

2. Remove the Refrigerator Control Box by pulling it downward.

3. Disconnect the lead wire on the right position and separate the lamp sockets.

3-7 MULTI DUCT

1. Remove the upper and lower Caps by using a flat screwdriver, and remove 2 screws. (Figure 17)

2. Disconnect the lead wire on the bottom position.

Figure 17

Figure 14

-7-

4. ADJUSTMENT

4-1 COMPRESSOR

4-1-1 Role

The compressor intakes low temperature and low pressure gas from the evaporator of the refrigerator and compresses this gas to high-temperature and high-pressure gas. It then delivers the gas to the condenser.

4-1-2 Composition

The compressor includes overload protection. The PTC starter and OLP (overload protector) are attached to the outside of the compressor. Since the compressor is manufactured to tolerances of 1 micron and is hermetically sealed in a dust and moisture-free environment, use extreme caution when repairing it.

4-1-3 Note for Usage

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

(2) If compressor is dropped or handled carelessly, poor operation and noise may result.

(3) Use proper electric components appropriate to the

Particular Compressor in your product.

(4) Keep Compressor dry.

If the Compressor gets wet (in the rain or a damp environment) and rust forms in the pin of the Hermetic

Terminal, poor operation and contact may result.

(5) When replacing the Compressor, be careful that dust, humidity, and soldering flux don’t contaminate the inside of the compressor. Contamination in the cylinder may cause noise, improper operation or even cause it to lock up.

4-2 PTC-STARTER

4-2-1 Composition of PTC-Starter

(1) PTC (Positive Temperature Coefficient) is a no-contact semiconductor starting device which uses ceramic material consisting of BaTiO

3

.

(2) The higher the temperature is, the higher the resistance value. These features are used as a starting device for the Motor.

4-2-2 Role of PTC-Starter

(1) The PTC is attached to the Sealed Compressor and is used for starting the Motor.

(2) The compressor is a single-phase induction motor.

Durign the starting operation, the PTC allows current flow to both the start winding and main winding.

ジ

4-2-3 PTC-Applied Circuit Diagram

Starting Method for the Motor

OVERLOAD PROTECTOR

N

2

PTC

5

S

3

6

L1

PTC STARTER

Resistance Starter Capacitor Running

C

COMPRESSOR

MOTOR

M

S

M

SEALED

TERMINAL

Figure 17

4-2-4 Motor Restarting and PTC Cooling

(1) It requires approximately 5 minutes for the pressure to equalize before the compressor can restart.

(2) The PTC device generates heat during operation.

Therefore, it must be allowed to cool before the compressor can restart.

4-2-5 Relation of PTC-Starter and OLP

(1) If the compressor attempts to restart before the PTC device is cooled, the PTC device will allow current to flow only to the main winding.

(2) The OLP will open because of the over current condition. This same process will continue (3 to 5 times) when the compressor attempts to restart until the PTC device has cooled. The correct OLP must be properly attached to prevent damage to the compressor.

Parts may appear physically identical but could have different electrical ratings. Replace parts by part number and model number. Using an incorrect part could result in damage to the product, fire, injury, or possibly death.

4-2-6 Note for Using the PTC-Starter

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

(2) Do not drop or handle carelessly.

(3) Keep away from any liquid.

If liquid such as oil or water enters the PTC,

PTC materials may fail due to breakdown of their insulating capabilities.

(4) If the exterior of the PTC is damaged, the resistance value may be altered. This can cause damage to the compressor and result in a no-start or hard-to-start condition.

(5) Always use the PTC designed for the compressor and make sure it is properly attached to the compressor.

Parts may appear physically identical but could have different electrical ratings. Replace parts by part number and model number. Using an incorrect part could result in damage to the product, fire, injury, or possibly death.

-8-

4-3 OLP (OVERLOAD PROTECTOR)

4-3-1 Definition of OLP

(1) OLP (OVERLOAD PROTECTOR) is attached to the

Compressor and protects the Motor by opening the circuit to the Motor if the temperature rises and activating the bimetal spring in the OLP.

(2) When high current flows to the Compressor motor, the

Bimetal works by heating the heater inside the OLP, and the OLP protects the Motor by cutting off the current flowing to the Compressor Motor.

4-3-2 Role of the OLP

(1) The OLP is attached to the Sealed Compressor used for the Refrigerator. It prevents the Motor Coil from being started in the Compressor.

(2) For normal operation of the OLP, do not turn the Adjust

Screw of the OLP in any way.

(OVERLOAD PROTECTOR

Electrical characteristics part number

330 FBYY cross section)

12345678

-S1 BOX98

Customer part number

Lot code/ date code

Physical termination part number

Part

No. Name

Base, phenolic

(UL 94 V-0 rated)

Movable arm support, plated steel

Stationary contact support, plated steel

Heater support, plated steel

Heater, resistance alloy

Disc, thermostatic alloy

Movable arm, spring temper copper alloy

Contact, movable, silver on copper

Contact, stationary, silver on copper

Slug, plated steel

Cover, polyester

(UL 94 V -0 rated)

Pin connector, plated copper alloy

(To engage 2.33/2.66 mm dia. pin)

4-4 TO REMOVE THE COVER PTC

1) Remove the Cover Back M/C.

(2) Disconnect two housing upper side of comp connected in.

(3) Loosen two screws on comp base.

1

2

3

Figure 18

(4) Use a L-shaped flap tool to pry off the cover.

(5) Assembly in reverse order of disassembly.

- 9 -

5. CIRCUIT DIAGRAM

- 10 -

6. TROUBLESHOOTING

6-1 COMPRESSOR AND ELECTRIC COMPONENTS

1

Power Source.

Remove PTC-Starter from Compressor and measure voltage between Terminal C of

Compressor and

Terminal 5 or 6 of PTC.

(Rated Voltage

±10%)?

YES

2

2

3

Check resistance of

Motor

Compressor.

Check resistance of

PTC-Starter.

No Voltage.

Applied voltage isn't in acceptable range.

(115V ±10%)

OLP disconnected?

YES

Replace OLP.

NO

Check connection condition.

Reconnect.

Advise customer that power supply needs to be checked by an electrician.

5

5

The range of resistance is between 1~50Ω (ok)

Check resistance between M-C, S-C and

M-S in Motor

Compressor.

Open or short

Replace

Compressor.

3 4

Check resistance of two terminals in

PTC-Starter.

Reference Page12.

3

5

4

Check OLP.

Check resistance of two terminals in OLP.

Reference Page12.

5

Check starting state.

Check the power supply under load.

(Compressor attempting to re-start after being off for 5 minutes).

Supply voltage rating with ±10%.

YES

Did compressor start?

YES

Compressor is OK

NO

Replace the compressor

NO

1

- 11 -

6-2 PTC AND OLP

Normal operation of

Compressor is impossible or poor.

Separate PTC-Starter from Compressor and measure resistance between No. 5 and 6 of PTC-Starter with a

Tester.

(Figure 19)

Observation value is

115V/60Hz : 6.8Ω ±30%

The resistance value is 0Ω (short) or

∞ (open).

Replace PTC-

Starter.

Separate OLP from

Compressor and check resistance value between two terminals of OLP with a Tester.

(Figure 20)

Shows continuity

Open

Check another electric component.

Replace OLP.

6 5

Figure 19

Figure 20

- 12 -

䐈

蹠

6-3 OTHER ELECTRICAL COMPONENTS

Not cooling at all

Compressor doesn't run.

Check for open short or incorrect resistance readings in the following components a. Starting devices b. OLP c. Compressor coil d. Wiring harness

Cause

Short, open, or broken.

Poor contact or shorted.

Coil open or shorted.

Poor contact or shorted.

Replace indicated component.

Poor cooling performance

Compressor runs poorly.

Check starting voltage.

Check voltage at starting devices.

Check current flowing in sub-coil of

Compressor.

Check rating of OLP.

Fan motor doesn't run.

Heavy frost buildup on

EVAPORATOR.

Check wiring circuit.

Check Fan Motor.

Check current flow in the following components:

Sensor

Fuse-M

Check current flow in the Defrost Heater.

Low voltage.

Poor or broken or open contact.

Shorted.

Lack of capacity.

Wire is open or shorted.

Coil is shorted or open.

Open.

Open.

Advise customer that the Power supply needs to be checked by an electrician.




Replace

Defrost Heater.

- 13 -



6-4 SERVICE DIAGNOSIS CHART

COMPLAINT

No Cooling.

Cools poorly.

Food in the

Refrigerator is frozen.

Condensation or ice forms inside the unit.

Condensation forms in the Exterior Case.

There is abnormal noise.

Door does not close well.

Ice and foods smell unpleasant.

POINTS TO BE CHECKED

¥ Is the power cord unplugged from the outlet?

¥ Check if the power switch is set to OFF.

¥ Check if the fuse of the power switch is shorted.

¥ Measure the voltage of the power outlet.

¥ Check if the unit is placed too close to the wall.

¥ Check if the unit is placed too close to the stove, gas cooker, or in direct sunlight.

¥ Is the ambient temperature too high or the room door closed?

¥ Check if food put in the refrigerator is hot.

¥ Did you open the door of the unit too often or check if the door is sealed properly?

¥ Check if the Control is set to Warm position.

¥ Is food placed in the cooling air outlet?

¥ Check if the control is set to colder position.

¥ Is the ambient temperature below 5¡C?

¥ Is liquid food sealed?

¥ Check if food put in the refrigerator is hot.

¥ Did you open the door of the unit too often or check if the door is sealed properly?

¥ Check if the ambient temperature and humidity of the surrounding air are high.

¥ Is there a gap in the door gasket?

¥ Is the unit positioned in a firm and even place?

¥ Are any unnecessary objects placed in the back side of the unit?

¥ Check if the Drip Tray is not firmly fixed.

¥ Check if the cover of the compressor enclosure in the lower front side is taken out.

¥ Check if the door gasket is dirty with an item like juice.

¥ Is the refrigerator level?

¥ Is there too much food in the refrigerator?

¥ Check if the inside of the unit is dirty.

¥ Are foods with a strong odor unwrapped?

¥ The unit smells of plastic.

Other possible problems:

Check if frost forms in the freezer.

Not defrosting

REMEDY

¥ Plug into the outlet.

¥ Set the switch to ON.

¥ Replace the fuse.

¥ If the voltage is low, correct the wiring.

¥ Place the unit about 4 inches (10 cm) from the wall.

¥ Place the unit away from these heat sources.

¥ Lower the ambient temperature.

¥ Put in foods after they have cooled down.

¥ Don't open the door too often and close it firmly.

¥ Set the control to Recommended position.

¥ Place foods in the high-temperature section.

(front part)

¥ Set the control to Recommended position.

¥ Set the control to Warm position.

¥ Seal liquid foods with wrap.

¥ Put in foods after they have cooled down.

¥ Don't open the door too often and close it firmly.

¥ Wipe moisture with a dry cloth. It will disappear in low temperature and humidity.

¥ Fill up the gap.

¥ Adjust the Leveling Screw, and position the refrigerator in a firm place.

¥ Remove the objects.

¥ Fix the Drip Tray firmly in the original position.

¥ Place the cover in its original position.

¥ Clean the door gasket.

¥ Position in a firm place and level the

Leveling Screw.

¥ Make sure food stored in shelves does not prevent the door from closing.

¥ Clean the inside of the unit.

¥ Wrap foods that have a strong odor.

¥ New products smell of plastic, but this will go away after 1-2 weeks.

Check Components of the defrosting circuit.

Check the refrigeration system.

The system is faulty.

Perform sealed system repair.

Check the

Thermistor.

The operation of the Thermistor is incorrect.

- 14 -

Replace the

Thermistor.

忸

6-5 REFRIGERATION CYCLE

Troubleshooting Chart

CAUSE

STATE OF

THE UNIT

STATE OF THE

EVAPORATOR

PARTIAL Freezer Low flowing sound of

LEAKAGE compartment and Refrigerant is heard and

Refrigerator don't frost forms in inlet only.

cool normally.

COMPLETE Freezer Flowing sound of refrigerant

LEAKAGE compartment and is not heard and frost isn't

Refrigerator don't formed.

cool normally.

PARTIAL

CLOG

Freezer

Refrigerator don't in inlet only.

cool normally.

Flowing sound of refrigerant compartment and is heard and frost forms

WHOLE

CLOG

MOISTURE

CLOG

Freezer compartment and

Flowing sound of refrigerant is not heard and frost isn't

Refrigerator don't cool. formed.

Cooling operation Flowing sound of refrigerant stops periodically.

is not heard and frost melts.

TEMPERATURE

OF THE

COMPRESSOR

REMARKS

A little higher than ambient temperature.

¥ Refrigerant level is low due

¥ to a leak.

¥ Normal cooling is possible by

¥ restoring the normal amount of

¥ refrigerant and repairing the leak.

Equal to ambient ¥ No discharging of Refrigerant.

temperature.

¥ Normal cooling is possible by

¥ restoring the normal amount of

¥ refrigerant and repairing the leak.


¥ Normal discharging of the

¥ refrigerant.

¥ The capillary tube is faulty.

Equal to ambient ¥ Normal discharging of the temperature.

¥ Refrigerant.

COMP-

RESSION

Freezer and

Refrigerator don't cool.

NO COMPNo compressing

RESSION operation.

Low flowing sound of refrigerant is heard and frost forms in inlet only.

Flowing sound of refrigerant is not heard and there is no frost.

Lower than ambient temperature.


¥ Cooling operation restarts

¥

¥ when heating the inlet of the capillary tube.

¥ Low pressure at high side

¥

¥ of compressor due to low refrigerant level.

Equal to ambient ¥ No pressure in the high temperature.

¥ pressure part of the

¥ compressor.

- 15 -

6-5-1 SEALED SYSTEM DIAGNOSIS

“Not Cooling” Complaint

All components operating, No airflow problems, Not frosted up as a defrost problem problem has been isolated to sealed system area

Partial

Frost

Pattern?

None

Very Fast

Equalization

Test

Very Slow Very Slow

Equalization

Test

Inefficient

Compressor

Fast

Partial

Restriction

Condenser

Temperature

Hotter than Normal

Complete

Restriction

Faint

Very Fast

Cap Tube

Sound

Room Temperature

Air/Low Side

Leak

Trace of Oil

Yes

Loss of Change

None to Weak

Compressor Not

Pumping

No

Leak

Undercharge

(The equalization test is trying to restart a compressor using a start kit after it has been operating.)

- 16 -

7. OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER

7-1 OPERATION PRINCIPLE

7-1-1 Operation Principle of Icemaker

Power On

Start Position

Icemaking

Mode

Harvest

Mode

Adjusts Ejector to Start Position with power on.

•

Waits until water becomes cold after starting the

Icemaking operation.

• Runs MOTOR to drop ice from the tray into the ICE BIN.

Fill

• Performs Icemaking Mode after supplying water by operating

the SOLENOID in ICE VALVE.

• With the detect lever, checks if the ICE BIN is full.

Park Position

Test Mode

• To operate LINE and SERVICE, press and hold the Cube Size button

for 3 seconds. The icemaking will run through 3 stages:

Harvest Fill Icemaking.

1. Turning the Icemaker stop switch off (O) stops the icemaking function.

2. Setting the Icemaker switch to OFF and then turning it back on will reset the icemaker control.

Cube Size button

- 17 -

Power (On/Off) Switch

7-2 ICE MAKER FUNCTIONS

7-2-1 Ice Making Mode

1. Icemaking refers to the freezing of supplied water in the ice trays. Complete freezing is assured by measuring the temperature of the Tray with icemaking SENSOR.

2. Icemaking starts after completion of the water fill operation.

3. The icemaking function is completed when the sensor reaches -7°C, 60 to 240 minutes after starting.

NOTE : After icemaker power is ON, the icemaker heater will be on for test for 9 sec.

7-2-2 Harvest Mode

1. Harvest (Ice removing) refers to the operation of dropping ices into the ice bin from the tray when icemaking has completed.

2. Harvest mode:

(1) The Heater is ON for 30 seconds, then the motor starts.

(2) Harvest mode is completed if it reaches start position again while Heater & Motor are on at the same time.

A. ice bin is full : The EJECTOR stops (heater off).

B. ice bin is not full : The EJECTOR rotates twice to open for ice.

NOTE : If the EJECTOR does not rotate once within 5 minutes in status (2), separate heater control mode starts operating to prevent the EJECTOR from being constrained. (It is recommended that the user open for ice to return to normal mode.)

7-2-3 Fill/Park Position

1. Once a normal harvest mode has been completed, the water solenoid will be activated.

2. The amount of water is adjusted by pressing the fill key repeatedly. This changes the time allowed for fill as illustrated in the table below.

Water supply amount table

STAGE TIME TO SUPPLY

1 6 sec.

INDICATIONS REMARKS

2 7 sec.

The water amount will vary depending on the water control switch setting, as well as the water pressure of the connected water line.

3 8 sec.

- 18 -

7-2-5 Function TEST

1. This is a compulsory operation for test, service, cleaning, etc. It is operated by pressing and holding the Cube Size button

for 3 seconds.

2. The test works only in the Icemaking Mode. It cannot be entered from the Harvest or Fill mode. (If there is an ERROR, it can only be checked in the TEST mode.)

3. Caution! If the test is performed before water in the icemaker is frozen, the ejector will pass through the water. When the fill mode begins (Stage 4), unless the water supply has been shut off, added water will overflow into the ice bin. If the control

Doesn’t operate normally in the TEST mode, check and repair as needed.

4. After water is supplied, the normal CYCLE is followed: icemaking

Harvest Fill Park Position

.

5. Five seconds after Stage 5 is completed, the icemaker returns to MICOM control. The time needed to supply water resets to the pre- test setting.

Diagnosis TABLE

STAGE ITEMS

1

2

HEATER

MOTOR

INDICATOR

*

REMARKS

Five seconds after heater starts, heater will go off if temperature recorded by sensor is

10°C (50°F)or lever is in up position.

Five seconds after heater starts, you can confirm that motor is moving.

You can confirm Hall IC detection of position.

3

4

HALL IC

(TRAY)

SOLENOID VALVE

Two seconds after detection of initial position, you can confirm that valve is on.

5

HALL IC

(LEVER)

Reset

You can check when the Hall IC is sensing a full

ice condition. (If there is a water fill error, the fifth LED is not on.)

Five seconds after fifth stage is completed, the icemaker resets to initial status.

6

Return to Status prior to

TEST MODE

7-3 DEFECT DIAGNOSIS FUNCTION

7-3-1 ERROR CODES shown on Ice Maker water supply control panel

NO DIVISION

PROBLEM

1

Normal

INDICATOR

Note fill times

(see previous page)

None

2

Icemaking

Sensor malfunction

Open or shorted wire or sensor

3

Icemaker Kit malfunction

Ejector blades have not reached the park position after 18 minutes from start of harvest mode

*

ERROR indicators in table can be checked only in TEST mode.

REMARKS

Display switch operates properly

Make sure that the wire on each sensor is connected.

Check

HALL IC/MOTOR/

HEATER/RELAY

- 19 -

9. DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM

9-1 FUNCTION

9-1-1 Function

1. When the appliance is plugged in, it is set to 37°F for Refrigerator and 0°F for freezer.

You can adjust the Refrigerator and the Freezer control temperature by pressing the ADJUST button.

2. When the power is initially applied or restored after a power failure, it is automatically set to "37" & "0".

REFRIGERATOR TEMP

EXPRESS

FREEZING

FREEZER TEMP

COLDER WARMER 37 F IS RECOMMENDED 0 F IS RECOMMENDED COLDER WARMER

0°C ~ 8°C -21°C ~ -13°C

9-1-2 How to Toggle the display between ºF&ºC

1. The display temperature mode can be changed from °F to °C or °C to °F by pressing and holding the COLDER FREEZER TEMP

and the COLDER REFRIGERATOR TEMP keys at the same time for over one second.

2. The initial setting is °F. Whenever the mode is changed, the LED lights are changed.

9-1-3 Control of freezer fan motor

1. Freezer fan motor has high and standard RPMs.

2. High RPM is used when electricity is first on, for express freezing, and when refrigerator is overloaded.

Standard RPM is used for normal usage.

3. Fan motor stops when refrigerator of freezer door opens.

9-1-4 EXPRESS FREEZING

1. The purpose of this function is to intensify the cooling speed of freezer and to increase the amount of ice.

2. Whenever selection switch is pressed, selection/release, the LED will turn ON or OFF.

3. If there is a power outage and the refrigerator is powered on again, EXPRESS FREEZING will be canceled.

4.To activate this function you need to press the Express Freezing key and the LED will turn ON. This function will remain activated for 24 hrs. The first three hours the compressor and Freezer Fan will be ON. The next 21hours the freezer will be controlled at the lowest temperature. After 24 hours or if the Express Freezing key is pressed again, the freezer will return to its previous temperature.

5. During the first 3 hours:

(1) Compressor and freezer fan(HIGH RPM) run continuously.

(2) If a defrost cycle begins during the first 90 minutes of Express Freezing, the Express Freeze cycle will complete its cycle after defrosting has ended. If the defrost cycle begins when Express Freeze has run for more than 90 minutes,

Express Freeze will run for two hours after the defrost is completed.

(3) If EXPRESS FREZZING is pressed during defrost, EXPRESS FREZZING LED is on but this function will start seven minutes after defrost is completed and it shall operate for three hours.

(4) If EXPRESS FREZZING is selected within seven minutes after compressor has stopped, the compressor (compressor delays seven minutes) shall start after the balance of the delay time.

(5) The fan motor in the freezer compartment rotates at high speed during EXPRESS FREZZING.

6. For the rest of 21 hours, the freezer will be controlled at the lowest temperature.

9-1-5 REFRIGERATOR LAMP AUTO OFF

1. To protect the risk of lamp heat, when Refrigerator door opens for 7 min., refrigerator lamp is auto off.

- 2 0-

9-1-6 Alarm for Open Door

1. This feature sounds a buzzer when the freezer or refrigerator door is not closed within 1 minute after it is opened.

2. One minute after the door is opened, the buzzer sounds three times each for 1/2 seconds. These tones repeat every 30 seconds.

3. The alarm is cancelled when the freezer or the refrigerator is closed while the buzzer sounds.

Freezer Door or Refrigerator

Door

Closed Open Closed Open Closed

3 Times 3 Times 3 Times 3 Times

Buzzer

30 sec 30 sec 30 sec

Within 1 min.

1 min.

9-1-7 Buzzer Sound

When the button on the front Display is pushed, a Ding~ Dong~ sound is produced.

9-1-8 Defrosting (removing frost)

1. Defrosting starts each time the COMPRESSOR running time reaches 7 hours.

2. For initial power on or for restoring power, defrosting starts when the compressor running time reaches 4 hours.

mode is malfunctioning.

-21-

9-1-9 Electrical Parts Are Turned On Sequentially

Electrical parts such as COMP, defrosting heater, freezer FAN, etc. are turned on in the following order to prevent noise and parts damage. Several parts are started at the same time at initial power on and are turned off together when TEST is completed.

OPERATING

Temperature of Defrosting

Sensor is 45°C or more

(when unit is newly purchased or when moved)

POWER

ON

in 0.5 sec

COMP

ON

ORDERS

in 0.5 sec

Freezer FAN

ON

Temperature of defrosting sensor is lower than 45°C

(when power cuts,

SERVICE)

POWER

ON

in 0.5 sec in 0.5 sec

COMP

ON

Defrosting heater ON

in 0.5 sec in 10 sec

Defrost heater

OFF

Freezer FAN

ON

Reset to normal operation from TEST MODE

Total load

OFF

in 7 min

COMP

ON

in 0.5 sec

Freezer FAN

ON

-22-

✽

9-1-10 Defect Diagnosis Function

1. Automatic diagnosis makes servicing the refrigerator easy.

2. When a defect occurs, the buttons will not operate; but the tones. such as ding. will sound.

3. When the defect CODE removes the sign, it returns to normal operation (RESET).

4. The defect CODE shows on the Refrigerator and Freezer Display.

REFRIGERATOR TEMP

COLDER WARMER 37

°F IS RECOMMENDED

Defect code signs

EXPRESS

FREEZING

0

°F IS RECOMMENDED

Defect code signs

FREEZER TEMP

COLDER WARMER

ERROR CODE on display panel

NO

1

2

3

4

ITEM

Failure of freezer sensor

Failure of

Refrigerator sensor

Failure of defrost sensor

Failure of Room

Temperature sensor

Er

Er

Er

ERROR CODE

FS rS dS

When display check mode: Er rt

CONTENTS

Cut or short circuit wire




REMARKS

Inspect Connecting wires on each sensor

5

6

Failure of defrost mode

Failure of BLDC

Fan Motor at

Freezing

Compartment

Er

Er dH

FF

When defrost sensor

2 hours after starting defrost.

If there is no fan motor signal for more than 65sec in operation fan motor

Snapping of defrost heater or Temperature fuse, pullout of connector (indicated minimum 2 hours after failure occurs)

Poor motor, hooking to wires of fan, contact of structures to fan, snapping or short circuit of Lead wires

Note 1) Room Temperature Sensor is not indicated on the failure indicating part but indicated in checking

Display. (When pressing for more than the warmer key of Refrigerator Temp. and the warmer kye of

Freezer Temp for more than 1 second).

LED check function: If simultaneously pressing the warmer key of Refrigerator Temp and the warmer key of

Freezer Temp for a second, all display LED graphics on. If releasing the button, the LED graphics displays the previous status.

-23-

9-1-11 TEST Mode

1. The Test mode allows checking the PCB and the function of the product as well as finding out the defective part in case of an error.

2. The test mode is operated by pressing two buttons at Display panel.

3. While in the test mode, the function control button is not recognized, but the recognition tone (beep~) sounds.

4. After exiting the test mode, be sure to reset by unplugging and then plugging in the appliance.

5. If an error, such as a sensor failure, is detected while in the test mode, the test mode is cleared and the error code is displayed.

6. While an error code is displayed, the test mode will not be activated.

REMARKS MODE

TEST1

MANIPULATION

Push Express Freezing

Key and COLDER KEY of Freezer Temp. at the

Same time for 3 seconds.

OR Push TEST S/W (on the main Board) Once.

CONTENTS

1) Continuous operation of the

COMPRESSOR and the Freezer fan

2) Stepping DAMPER OPEN

3) Defrosting HEATER OFF

4) DISPLAY LED all ON

TEST2

TEST3

Reset




In TEST MODE 1 OR

Push TEST S/W Once in

TEST MODE 1




In TEST MODE 2 OR


TEST MODE 2




In TEST MODE 3 OR


TEST MODE 3

1) Continuous operation of the

COMPRESSOR and the Freezer fan

2) Stepping DAMPER CLOSE

3) Defrosting HEATER OFF

4) DISPLAY LED ahows no. 2

1) COMPRESSOR and the Freezer fan

OFF

2) Stepping DAMPER CLOSE

3) Defrosting HEATER ON

4) DISPLAY LED ahows no. 3

Reset to the previously setting

Before TEST MODE

Reset if the

Temperature of the

Defrosting sensor is

8¡C or more.

The compressor will

Start after a 7-minute

Delay.

In case the freezer fan is in operation when the WARMER KEY in Refrigerator and Freezer Temp. Control are pressed for more than one second at the same time freezer fan RPM changes. (for example if high speed, to normal speed or if normal speed, to high speed for 30 seconds)

After 30 seconds, it turns to its original RPM.

* Demonstration (Display) MODE:

1. To enter this mode, raise either the Refrigerator or Freezer temperature to its highest setting. Then, press that Warmer

Key and hold for about 5 seconds.

2. The LED panels will display OFF, to indicate that the Compressor, Circulating Fan, Damper, and Defrost Heater are not operating.

3. The Open Door Alarm and the Lamp Auto-Off feature will work normally and can be demonstrated.

4. To reset to normal operation, press and hold either Warmer Key for about 5 seconds.

-24-

9-2 PCB FUNCTION

9-2-1 Power Circuit

6.8

100

The secondary part of the TRANSFORMER is composed of the power supply for the display, the BLDC FAN Motor drive

(15.5 V), the relay drive (12 Vdc) and the MICOM and IC (5 Vdc).

The voltage for each part is as follows:

PART

VOLTAGE

VA 1

115 Vac

CE 3

12 Vdc

CE 4

15.5 Vdc

CE 5

5 V

VA1 is a part for preventing over voltage and noise. When 385V or higher power is applied, the inside elements are shortcircuited and broken, resulting in blowout of the fuse in order to protect the elements of the secondary part of the

TRANSFORMER.

-25-

9

-2-2 Oscillation Circuit

This circuit generates the base clock for calculating time and the synchro clock for transmitting data from and to the inside logic elements of the IC1 (MICOM). Be sure to use specified replacement parts, since calculating time by the IC1 may be changed. If changed, the OSC1 SPEC will not work.

9

-2-3 Reset Circuit

The RESET circuit allows all the functions to start at the initial conditions by initializing various parts, including the RAM inside the MICOM (IC1) when the power is initially supplied or the power supply to the MICOM is restored after a momentary power failure. For the initial 10ms of power supply, LOW voltage is applied to the MICOM RESET terminal.

During a normal operation, 5V is applied to the RESET terminal. (If a malfunction occurs in the RESET IC, the MICOM will not operate.)

-26-

9

-2-4 Load / Buzzer Drive & Open Door Detection Circuit

1. Load Drive Condition Check

L1

5mH/4A

CM1

470nF

275VAC CON1

9

VA1

POWER

7

LOAD TYPE

ICE MAKER

RUNNING CAPACITOR

STARTING CAPACITOR

PTC START

COMP

CON2

OLP

M

COOLING-FAN

1

1

DEF-HEATER

LAMP-F

FUSE-M nc com

A

B nc

DOOR S/W-F com

3

5

LAMP-R com nc

C

D nc com

DOOR S/W-R1&R2

M

WATER VALVE

7

5

3

RC-FILTER

CON3

5

3

FRENCH DOOR

HEATER

M

VALVE II

1

RC-FILTER

COMP

Measurement Location (IC6)

ON

Condition

OFF

NO.13

DEFROSTING

HEATER

NO.14

RY1

ALZ21B12

D7

1N4004

13

IC6

KID65003AP

9

4

RY2

G5NB-1A

RY3

G5NB-1A

RY4

G5NB-1A

14 3

11 6

16 1

RY5

G5N-1A

15 2

RY6

G5N-1A

12

8

5

LAMP

NO.16

1V or below

12V

10

P06

11

P05

14

P02

13

P03

12

P04

I C 1

(MICOM)

9

P07

FRENCH DOOR

HEATER 1, 2 /

DEW HEATER

NO.12

VALVE

NO.15

2. Motors driving circuit

2.1 Fan motor driving circuit (freezing compartment fan)

2. This is a circuit to perform a temporary change of speed for the fan motor and applies DC voltage up to 7.5V ~ 16V to motor.

3. This circuit prevents over-driving the fan motor by cutting off power applied to the fan motor in the lock of fan motor by sensing the operation RPM of the fan motor.

-27-

MOTOR OFF

MOTOR ON a part

2V or less

13V~15V b part

0V

0V c part

5V

2V~3V

2.2 Cooling motor driving circuit (machine room)

1. This circuit makes standby power 0 by cutting off power supplied to ISs inside of the fan motor in the fan motor OFF.

2. This circuit prevents over-driving the fan motor by cutting off power applied to the fan motor in the lock of fan motor by sensing the operation RPM of the fan motor.

MOTOR OFF

MOTOR ON a Part

2V or less

13V~15V b part

0V

0V

I C 1

(MICOM)

P14

(PPG)

35

R40

4.7KJ

R41

3.9KJ

R42*

10KJ

R43

330J

Q4

KTB1151

R44

1.5KJ

1/2W

Q5

KTC3198

D9

FR107

D8

FR107

L4

1mH

CE12

220uF

/25V

P11

(INT1)

32

R45

2KJ

RJ1*

CON4

A

CC19*

223

R46

4.7KJ

CC20*

102

6

4

5

3 4

1

C-FAN

-28-

3. Open Door Detection Circuit Check

7

1

2

Freezer/

Measurement

Location

Refrigerator Door

Closed

Open

9-2-5 Temperature Sensor Circuit

(PIN NO.30 & PIN NO.37)

5 V

0 V

7

5

6

The upper CIRCUIT reads REFRIGERATOR temperature, FREEZER Temperature, and DEFROST-SENSOR temperature for defrosting and the indoor temperature for compensating for the surrounding temperature into MICOM.

OPENING or SHORT state of each TEMPERATURE SENSOR are as follows:

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

Freezer Sensor

Refrigerator Sensor

Defrosting Sensor

Room Temperature sensor

0.5 V ~ 4.5 V 0 V 5 V

-29-

9-2-6 Refrigeration Compartment Stepping Motor Damper Circuit

* The circuit shown below is the damper circuit to regulate the refrigerator temperature.

2

3

4

9-2-7 Dispenser Input

7

3

4

- 30 -

9-2-8 Temperature Compensation & Overcooling /Undercooling Compensation circuit

1. Refrigerator Temperature Compensation

➧

Resistance

(RCR)

180 K

56 K

33 K

18 K

12 K

10 K

8.2 K

5.6 K

3.3 K

2 K

470

Refrigerator

Temperature

Compensation

+2.5¡C

+2.0¡C

+1.5¡C

+1.0¡C

+0.5¡C

0 ¡C

-0.5¡C

-1.0¡C

-1.5¡C

-2.0¡C

-2.5¡C

Remark

Compensation by raising the temperature

Standard Temperature

Compensation by lowering the temperature

Table of Temperature Compensation by adjusting the resistance (difference from the current temperature) e.g., If the refrigerator compensation resistance

(RCR) is changed from 10K (the current resistance) to 18K (the adjustment resistance), the temperature of the refrigerator rises 33.8¡F(+1¡C).

2. The temperature compensation for refrigerator compartment is in the following table:

Refrigerator

(RCR)

Revised resistance

Present resistance

470

2k

3.3k

5.6k

8.2k

10k

12k

18k

33k

56k

180k

470 2k 3.3k

5.6k

8.2k

10k 12k 18k 33k 56k 180k

No 0.5¡C change Up

1¡C

Up

0.5¡C No 0.5¡C

Down Change Up

1.5¡C

Up

1¡C

Up

1¡C 0.5 ¡C No 0.5¡C

Down Down Change Up

2¡C

Up

2.5¡C

Up

1.5¡C 2¡C

Up Up

1¡C 1.5¡C

Up Up

1.5¡C 1¡C 0.5¡C No 0.5¡C 1¡C

Down Down Down Change Up Up

3¡C

Up

2.5¡C

Up

2¡C

Up

1.5¡C

Up

3.5¡C

Up

3¡C

Up

2.5¡C

Up

2¡C

Up

2¡C 1.5 ¡C 1¡C 0.5¡ No 0.5¡C

Down Down Down Down Change Up

1¡C

Up

2.5¡C 2¡C 1.5¡C 1¡C 0.5¡C No 0.5¡C

Down Down Down Down Down Change Up

1.5¡C

Up

1¡C

Up

3¡C 2.5 ¡C 2¡C 1.5¡C 1¡C 0.5¡C No 0.5¡C

Down Down Down Down Down Down Change Up

2¡C

Up

1.5¡C

Up

1¡C

Up

3.5¡C 3¡C 2.5¡C 2¡C 1.5¡C 1¡C 0.5¡C No 0.5¡C

Down Down Down Down Down Down Down Change Up

4¡C

Up

3.5¡C

Up

3¡C

Up

2.5¡C

Up

4.5¡C

Up

4¡C

Up

3.5¡C

Up

3¡C

Up

2.5¡C

Up

2¡C

Up

1.5¡C

Up

1¡C

Up

5¡C

Up

4.5¡C

Up

4¡C

Up

3.5¡C

Up

3¡C

Up

2.5¡C

Up

2¡C

Up

1.5¡C

Up

4¡C 3.5 ¡C 3¡C 2.5¡C 2¡C 1.5¡C 1¡C 0.5¡C No 0.5¡C

Down Down Down Down Down Down Down Down Change Up

1¡C

Up

4.5¡C 4¡C 3.5¡C 3¡C 2.5¡C 2¡C 1.5¡C 1¡C 0.5¡C No 0.5¡C

Down Down Down Down Down Down Down Down Down Change Up

5¡C 4.5 ¡C 4¡C 3.5¡C 3¡C 2.5¡C 2¡C 1.5¡C 1¡C 0.5¡C No

Down Down Down Down Down Down Down Down Down Down Change

NOTE

: This circuit is designed to input the necessary temperature compensation values into the MICOM. This adjusts the refrigerator temperature, which is different in each model.

- 31 -

9-2-9 Key Button Input & Display Light-On Circuit

The circuit shown above determines whether a function control key on the operation display is pushed. It also turns on the corresponding function indication LED Module SEVEN SEGMENT DISPLAY. The drive type is the scan type.

3

4

1

2

CON 6

- 32 -

9-3 RESISTANCE SPECIFICATION OF SENSOR.

TEMPERATURE

- 20 ûC

- 15 ûC

- 10 ûC

- 5 ûC

0 ûC

+ 5 ûC

+ 10 ûC

+ 15 ûC

+ 20 ûC

+ 25 ûC

+ 30 ûC

+ 40 ûC

+ 50 ûC

RESISTANCE OF FREEZER

SENSOR

22.3 K

16.9 K

13.0 K

10.1 K

7.8 K

6.2 K

4.9 K

3.9 K

3.1 K

2.5 K

2.0 K

1.4 K

0.8 K

RESISTANCE OF REFRIGERATOR &

DEFROST SENSOR & ROOM SENSOR

77 K

60 K

47.3 K

38.4 K

30 K

24.1 K

19.5 K

15.9 K

13 K

11 K

8.9 K

6.2 K

4.3 K

¥ The resistance of the SENSOR has a ±5% common difference.

¥ Measure the resistance of the SENSOR after leaving it for over 3 minutes in the measuring temperature.

This delay is necessary due to sensor response speed.

¥ Measure the F-SENSOR, SUPER FROST SENSOR, R1, R2-SENSOR after disconnect CON5 of PWB ASSY, MAIN.

- 33 -

- 34 -

- 35 -

9-5 MAIN PWB ASSEMBLY AND PARTS LIST

9-5-1 Main PWB Assembly

- 36 -

9

-5-2 Replacement Parts List

DESCRIPTION

PWB(PCB)

TRANSFORMER,SMPS[COIL]

TRANSFORMER,SMPS[COIL]

CONNECTOR (CIRC),WAFER







IC,DRAWING

IC,POWER MANAGEMENT

IC,POWER MANAGEMENT

IC,KEC

IC,LINEAR

IC,KEC

IC,KEC

IC,DRAWING

RELAY

RELAY

-

RELAY

RELAY

RESONATOR,CERAMIC

VARISTOR

VARISTOR

DIODE,RECTIFIERS

DIODE,RECTIFIERS

DIODE,RECTIFIERS

DIODE,RECTIFIERS

CAPACITOR,FIXED ELECTROLYTIC



-






CAPACITOR,FIXED CERAMIC(HIGH DIELECTRIC)

CAPACITOR,FIXED CERAMIC(High dielectric)






CAPACITOR,FIXED FILM




INDUCTOR,RADIAL LEAD

RESISTOR,FIXED CARBON FILM








RESISTOR,METAL GLAZED(CHIP)














RESISTOR,FIXED METAL FILM



RESISTOR,FIXED METAL OXIDE FILM




TRANSISTOR

TRANSISTOR,BIPOLARS

TRANSISTOR,BIPOLARS

FILTER(CIRC),EMC

FILTER(CIRC),EMC

FILTER(CIRC),EMC

SWITCH,TACT

DIODE,ZENERS

JUMP WIRE

FUSE,DRAWING

SCREW TAP TITE(S),BINDING HEAD

HEAT SINK

SOLDER,SOLDERING

FLUX

SOLDER(ROSIN WIRE) RS0

No

59

60

61

62

63

64

65

56

57

58

66

67

68

69

70

46

47

48

48

49

50

51

52

53

54

55

40

41

42

43

44

45

33

34

35

36

37

38

39

26

27

28

29

30

31

32

84

85

86

87

88

78

79

80

81

82

83

71

72

73

74

75

76

77

7

8

5

6

9

10

11

12

13

3

4

1

2

19

20

21

22

23

24

25

14

15

16

17

18

P/NO

6870JB8203A

6170JB2012B

6170JB2012C

6630AQ9106D

6630AQ9106E

6630AQ9106B

6630JB8004E

6630JB8004L

6630JB8004C

6630JB8004F

0IZZJB2054V

0ISK635100A

0IPMGNE001A

0IKE431000A

0IKE780500Z

0IKE650030B

0IKE704200A

0ITO777400A

6920ALZ001B

6920JB2003A

6920JB2003E

6920JB2009B

-

6212JB8001B

6102JB8001B

6102W5V007A

0DB360000AA

0DD400409AC

0DR107009AA

0DRSA00070A

0CE105BK638

0CE106EK638

0CE227BF638

0CE227BH638

-

0CE476BK638

0CE476ZV6E0

0CE687YH6E0

0CE687YJ618

0CK102DK96A

0CK1040K949

0CK104DK9BA

0CK22102510

0CK2230K949

0CK223DK96A

0CK4710K519

0CQ1041N509

0CK102DK96A

0CQ4732Y430

0CQ47418670

0LR1001M4F0

0RD1001G609

0RD1002G609

0RD2001G609

0RD3901G609

0RD4701G609

0RD5603H609

0RD2001G609

0RD4701G609

0RJ2701L622

0RH1002L622

0RH1004L622

0RH1001L622

0RH2001L622

0RH3300L622

0RH4701L622

0RD1000E672

0RD1501H609

0RJ0000E672

0RJ2401E472

0RJ6800E672

0RD6801G609

0RJ9101E472

0RJ1002E472

0RN1622G409

0RN2612G409

0RS0151J609

0RS0101J609

0RS5602K641

0RS3303J609

0TR319809AA

0TRKE00008A

0TRKE80016A

6200JB8004A

6200JB8007X

6210JB8001A

6600RRT001Z

0DZMR00029A

6854B50001A

89

90

91

92

93

94

95

0FZZJB3001A

1SBF0302418

4920JB3007A

49111004

59333105

9VWF0120000

SPEC

BEST BRAVO-PJT

DL-PJT 2.9MH/20W

YW396-09AV

YW396-07AV

YW396-05AV

SMW250 YEONHO 6P 2.5MM STRAIGHT SN




TMP87C846N 42P SDIP BK MASK BRAVO33-PJT BEST/BETTER

STR-G6351 5PIN BK SMPS 2,4PIN FORM

PS2561L1-1-V NEC 4P,DIP BK = TLP721F

KIA431 3 PIN TP - -

KIA7805PI 3DIP BK 5V 1A REFORM

KID65003AP 16P,SDIP BK DRIVE IC

KIA7042P KEC 3P BK RESET

TA7774AP 16,SDIP BK DRIVE,IC STEPPING MOTOR

ALZ12B12 NAIS 250VAC 16A 12VDC 1A NO VENTING

G5N-1A OMRON 250VAC 1.5A 12VDC 1A JAPAN

-

G5NB-1A-E(CHINA) OMRON 250VAC 5A 12VDC 1A NO VENTING

G5SB-14 OMRON 250VAC 5A 12VDC 1C NO VENTING

CSTS0400MG03 MURATA 4MHZ . TP -

INR14D621 ILJIN UL/VDE BK 620V

INR14D331K IL JIN UL/CSA/VDE BK

D3SBA60 BK SHINDENGEN - 600V 4A 80A - 10UA

RECT1N4004 TP

FR107 TP RECTRON DO41 1000V 1A 30A 500NSEC 5A

RL2 SANKEN BK NON 400V 2A 40A 50NSEC 10UA

1UF KME,RG,YX 50V 0.2 FM5 TP 5

10UF KMG 50V 20% FM5 TP 5

220UF KME TYPE 16V 20% FM5 TP 5

-

220UF KME,RG 25V 20% FM5 TP 5

47UF KME TYPE 50V 20% FM5 TP 5

47UF HE 450V 20% BULK SNAP IN

680UF RX 25V 20% BULK SNAP IN

680UF RX 35V 20% TP 5 FL

1NF 2012 50V 80%,-20% R/TP X7R

0.1UF D 50V 80%,-20% F(Y5V) TA52

0.1UF 2012 50V 80%,-20% R/TP JE

220P 2KV K B S

22NF 50V Z F TA52

22NF 2012 50V 80%,-20% R/TP X7R

470PF 50V K B TA52

0.1UF D 100V 10% PE TP5

1NF 2012 50V 80%,-20% R/TP X7R

47000PF S 630V 5% M/PE NI R

0.47UF D 275V 20% M/PP NI R

1000UH 20% R 6X12.5 BULK

1K OHM 1/4 W 5% TA52

10K OHM 1/4 W 5% TA52

2K OHM 1/4 W 5% TA52

3.9K OHM 1/4 W 5% TA52

4.7K OHM 1/4 W 5% TA52

560K OHM 1/2 W 5% TA52

2K OHM 1/4 W 5% TA52

4.7K OHM 1/4 W 5% TA52

2.7K OHM 1/8 W 5% 2012 R/TP

10KOHM 1/8 W 5% 2012 R/TP

1MOHM 1/8 W 5% 2012 R/TP

1K OHM 1 / 8 W 2012 5.00% D

2K OHM 1 / 8 W 5% 2012 R/TP

330 OHM 1/8 W 5% 2012 R/TP

4.7K OHM 1/8 W 5% 2012 R/TP

100 OHM 1/8 W 5% 2012 R/TP

1.5K OHM 1/2 W 5% TA52

0 OHM 1/8 W 5% 2012 R/TP

2.4K OHM 1/8 W 1% 2012 R/TP

680 OHM 1/8 W 5% 2012 R/TP

6.8K OHM 1/4 W 5% TA52

9.1K OHM 1/8 W 1% 2012 R/TP

10K OHM 1/8 W 1.00% 2012 R/TP

16.2K OHM 1/4 W 1.00% TA52

26.1K OHM 1/4 W 1.00% TA52

1.5 OHM 1 W 5.00% TA52

1 OHM 1 W 5% TA52

56K OHM 2 W 5.00% F20

330K OHM 1 W 5.00% TA52

KTC3198-TP-Y (KTC1815)KEC

KEC KTB1151 BK TO126 60V 5A

KEC KRC106S R/TP SOT23 50V 100MA

CV940050 TNC - -

UV11-05320 TNC BK 0.5A 320MH

BFS3510A0 SAMWHA TP52 BEAD FILTER

JTP1280A6 JEIL 12VDC 50MA -

1N5232B MOTORORA TP DO34 0.5W 5.6V 81MA .PF

0.6MM 52MM TP TAPING SN

2A 250V - SLOW-BLOW LITTELFUSE,TRIAD

+ D3.0 L8.0 MSWR3/FZY

23.3*17*25 DRIVE IC STR R-S64,65,73 2PIN 1-SCREW 3MM -

NA HEESUNG METAL BAR SN 63% NA

JS-71 KOKI SANEI KOREA(KSK) SG;0.808 +/-0.003

D1.20

T=1.6

TRANS

TRANS

CON1

CON2

CON3

CON4

REMARK

IC4

IC5

IC6

IC7

CON5

CON6

CON7

IC1

IC2

IC3

IC8

RY1

RY5,RY6

-

-

RY2-4

OSC1

VA1

VA1

BD1

D7

D1,D2,D5,D6,D8,D9

D3,D4

R21

R15,R28,R30,R42,R8

R13

R7

R23-R25,R38,R39

R31,R43

R14,R16,R37

R5

R32,R44

RJ1

RL2

R6

R4

RL1

RT1

RF1

RR1,RD1

ROCP

ROCP

R3

R1

Q3,Q5

Q2,Q4

Q1

L1

L2

FB1

SW1

ZD1

J03,J04,J06-J12,J15(10MM)

CE10

CE6-CE9

CE5

-

CE11,CE12

CE2

CE1

CE3

CE4

CC17,CC20

CC3,CC4,CC6,CC7

CC5,CC10

CC2

-

CC8,CC9,CC11-15,CC18

CC1

CM4

CC20

CM3

CM1

L3,L4

R19

R29,R35,RCR1

R17,R20,R21,R22,R26,R27,R36

R34,R41

R18,R33,R40

R2

R45

R46

J13,J14(8MM)

J01,J02,J05(12.5MM)

FUSE1

-

-

-

(IC2)

DOO SAN

SAM IL

MAKER

YEON HO

YEON HO

YEON HO

YEON HO

YEON HO

YEON HO

YEON HO

TOSHIBA

SANKEN

NEC

KEC

KEC

KEC

KEC

TOSHIBA

NAIS

OMRON

OMRON

-

OMRON

MURATA

IL JIN

IL JIN

SHINDENGEN

DELTA

DELTA

SANKEN

ROHM

ROHM

SMART

SMART

SMART

SMART

SMART

SMART

KEC

ROHM

ROHM

ROHM

ROHM

ROHM

ROHM

ROHM

ROHM

SMART

ROHM

ROHM

ROHM

SMART

KEC

KEC

TNC

TNC

SAM WHA

JEIL

DEL TA

SAM WHA

SAM WHA

MURATA

SAM WHA

SAM WHA

TNC

SMART

SMART

SMART

SMART

SMART

SMART

SMART

SMART

SAM WHA

SAM WHA

SAM WHA

-

SAM WHA

SAM WHA

SAM WHA

SAM WHA

SAM WHA

MURATA

SAM WHA

MURATA

SAM WHA

SAM WHA

MURATA

DAE A LEAD

SAM JU KYO YUK

HAENG SUNG

-

-

-

(IC2)

- 37 -

9-5-3 PWB Assembly, Display and parts list

CON102

A WORK

4

1

2g

5g

0.5g

30

31

32

33

29

P/NO

6870JB8199A

6630JB8005C

0IZZJB?????

0ISTLM1001A

0IKE650030C

0ISTLKE002A

0ISTLKE003A

0ISTLKE005A

6212BB3245A

0CE476VH6DC

0CE107VF6DC

0CK104DK94A

0CK102DK96A

0RH2200L622

0RD1001E672

0RD2001E672

0RD4701E672

0RD1004E672

0RJ8200H672

0RH2001L622

0RH1000L622

0DZRM00188A

0DSRM00068A

0DD414809AA

6327JB8001A

0DLLE0059AA

0DLLE0059AA

6908JB3002D

6600JB8005A

6600RRT002K

6600JB8004A

-

49111001

49111004

59333105

20

21

22

17

18

19

12

13

14

15

16

23

24

25

26

27

28

No

2

1

5

6

3

4

7

8

9

10

11

2

1

1

7

6

1

2

-

1

9

2

2

1

5

-

4

-

2

1

Qty

1

1

1

1

1

1

1

1

1

1

DESCRIPTION

PWB(PCB)

CONNECTOR (CIRC), WAFER

IC, DRAWING

IC, STANDARD LOGIC

IC, KEC




RESONATOR CERAMIC

CAPACITOR,FIXED ELECTR

CAPACITOR,FIXED ELECTR

CAPACITOR,FIXED CERAMIC

CAPACITOR,FIXED CERAMIC

RESISTOR METAL GLAZED (CHIP)








DIODE ZENERS

DIODE SWITCHING

DIODE SWITCHING

DISPLAY LED ASSEMBLY

LED

LED

BUZZER

SWITCH TACT

SWITCH TACT

SOLDER, SOLDERING

SOLDER, SOLDERING

FLUX

SPEC

BRAVO 33 DISPLAY

SMAW250-04

TMP87C409M 28, SOP28-P-450 BRAVO 33

M54563FP MITSUBISHI 20 R/TP CONVERT

KID65003AF 16SOP BK 7CH DRIVER

KIA78L05F KEC SOT-89 TP REGULATOR

KIA7042AF KEC SOT-89 TP RESET IC

KRC106S KEC SOT-23 TP TRANSISTOR

CSTCR4M00G53-R0 MURATA 4.0MHZ +/- 0.5% T/R SMD

47UF MV 25V 20% R/TP(SMD) SMD

100UF MV 16V 20% R/TP(SMD) SMD

100NF 2012 50V 80%, -20% R/TP F(Y5V)

1NF 2012 50V 80%, -20% R/TP X7R

220 OHM 1/8 W 2012 5.00% D

1K OHM 1/8 W 5% 2012 R/TP

2K OHM 1/8 W 5% 2012 R/TP

4.7K OHM 1/8 W 5% 2012 R/TP

1M OHM 1/8 W 5% 2012 R/TP

820 OHM 1/2 W 5% 2012 R/TP

2K OHM 1/8 W 2012 5.00% D

100 OHM 1/2 W 5% 2012 R/TP

RLZ OHM R/TP LLDS(LL-34) 500MW 5.6V 20MA .PF

RLS4148 ROHM R/TP LLDS(LL-34) 75V 450MA 2000MA

IN4149 26 MM

LN4023-13EWRS GREEN 2.1V 1.7MCD

LT8323-41-BCN 2.1V D3 TP GREEN

LT8323-41-BCN 2.1V D3 TP GREEN

PQ272207PL-20C-2000 SUNWAY PIEZO 2KHZ 80DB (CHINA)

KPT-1105A

JTP1230A JEIL 12V DC 50MA

KPT-1109R

KPT-1109G

SOLDER (ROSIN WIRE) RSO

H63A

SG; 0.825-0.830 KOREA F.H-206

MAKER

YEON HO

TOSHIBA

MITSUBISHI

KEC

KEC

KEC

KEC

MURATA

SAMHWA

SAMHWA

MURATA

MURATA

ROHM

ROHM

ROHM

ROHM

ROHM

ROHM

ROHM

ROMH

ROHM

PYUNG CHANG DELTA

LEDTECH

LEDTECH

LEDTECH

SUNWAY

KYUNG IN

JEIL

KYUNG IN

KYUNG IN

HUISUNG

HUISUNG

KOK1

REMARK

CON01

IC1

IC4

IC5, IC6

IC2

IC3

Q1

CE2

CE1

CC1-CC7

CC8-CC9

R5

R3, R4

R2

R1, R7, R21-R24

R6

R8-R16

R17,R19

ZD1

-

D108-D112

-

SEG1, SEG2

L102-L105

L101,L107

BUZZER

-

-

-

SW102-SW105

SW106

- 38 -

9-6 PWB DIAGRAM

9-6-1 PWB Main Assembly

ICE MAKER

POWER

CON1

9

7

RUNNING CAPACITOR

STARTING CAPACITOR COMP

CON2

OLP

PTC START

M

COOLING-FAN

1

1

DEF-HEATER

LAMP-F

FUSE-M nc com

A

B nc

DOOR S/W-F com

LAMP-R nc com

C

D nc com

DOOR S/W-R1&R2

M

WATER VALVE

3

5

7

5

3

CM2

470nF

275VAC

L2

32mH/0.5A

FUSE1

250V/2A

L1

5mH/4A

VA1

CM1

470nF

275VAC

BD1

D3SBA60

R1

R2

560KJ

1/2W

4

IC2

STR

G6551

5

3

CE1

47uF

/450V

4

FB1

R4

R3

56KJ

2W

D1

FR107

CM3

473

/630V

D2

FR107

R5*

100J

CE2

47uF

/50V

IC3-1

2

1

3

R6*

680J

CC1

471

Rocp

2

1

TRANS

10

D3

RL2

+15.5V

12

D4

RL2

5

CE4

680uF

/35V

4

8

12V

CE3

680uF

/25V

R8*

1KJ

CC3

104

IC5

7805

CC4

104

CC2

221

/2KV

IC4

KIA431

R7*

1.8KJ

IC3

CM4

103/100V

5V

CE5

220uF

/16V

RL1*

9.1KF

RL2*

2.4KF

22

42

CC5*

104

21

VDD

Varef

17

Vss

Vass

TEST

RY1

ALZ21B12

RY3

G5NB-1A

RY4

G5NB-1A

RY5

G5N-1A

D7

1N4004

13

IC6

KID65003AP

9

4

14

11

16

15

3

6

1

2

10

P06

11

P05

14

P02

13

P03

12

P04

CON3

RC-FILTER

5

3

RY6

G5N-1A

12

8

5

9

P07

FRENCH DOOR

HEATER

M

VALVE II

1

RC-FILTER

OSC1

CSTS0400MG03

19

XIN

20

XOUT

TEMP.COMPENSATION (REPLACING RCR1)

NOTE

1

IC7

KIA7042

2

3

180KJ

56KJ

33KJ

18KJ

12KJ

10KJ

8.2KJ

5.6KJ

3.3KJ

2KJ

470J

RESISTANCE OF

RCR1

COLD-STORAGE ROOM

TEMP. COMPENSATION

+2.5

C

+2 C

+1.5 C

+1 C

+0.5

C

0 C

-0.5

-1 C

-1.5

C

C

-2 C

-2.5

C

WARMER

FACTORY

COLDER

R15*

10KJ

RCR1

10KJ

CC6

104

CC7

104

18

RESET

27

P64

1,2,3,4,5,8,14-16,29,30,35,40,41

- 39 -

P72

(PDO/PWM)

6

R33

4.7KJ

R34

3.9KJ

R35

10KJ

R31

330J

Q2

KTB1151

R32

1.5KJ

1/2W

Q3

KTC3198

D6

FR107

D5

FR107

L3

1mH

CE11

220uF

/25V

P71

(INT4)

7

P14

(PPG)

35

R40

4.7KJ

R41

3.9KJ

R42*

10KJ

R43

330J

Q4

KTB1151

R44

1.5KJ

1/2W

Q5

KTC3198

R36

2KJ

D9

FR107

D8

FR107

L4

1mH

CE12

220uF

/25V

P11

(INT1)

32

RJ1*

R45

2KJ

CON4

CC16*

223

R37

4.7KJ

CC17*

102

1

2

3 4

1 F-FAN

2

3

CC19*

223

R46

4.7KJ

CC20*

102

6

4

5

3 4

1 C-FAN

P60

23

P61

24

P62

25

P67

30

P10

P12

P13

31

33

34

CC12*

223

CC13*

223

CC14*

223

CC15*

223

R23*

2KJ

R24*

2KJ

R25*

2KJ

R26*

2KJ

RR1

26.1KF

RD1

26.1KF

R27

2KJ

R28*

10KJ

R29

10KJ

R30

10KJ

CE10

1uF

/50V

+

9,16

1,2

6

8

3

4,5,7

12,13

IC8

TA7774F

15

14

11

10

RF1

16.2KF

+

CE7

10uF

/50V

CON5

+

CE8

10uF

/50V

+

CE9

10uF

/50V

12

11

10

9

8

7

6

5

1

2

3

4

A

A

B

B

F-SENSOR

R-SENSOR

D-SENSOR

A

F-DOOR S/W

STEPPING

MOTOR

P16

37

CC18*

223

P20

39

CC11*

223

P63

26

CC9*

223

R17

2K

R21*

2KJ

R39*

2KJ

R38*

2KJ

RT1*

10KF

CE6

10uF

/50V

CON7

1

2

3

4

5

6

7

PUMP

S/W

C

D

R-DOOR S/W

RT-SENSOR

P15

36

CC8*

223

R16*

4.7K

SW1

P77

38

P76

39

CC10*

104

R19

1K

R20

2K

R18

4.7K

ZD1

5.6V/0.5W

Q1

C106

CON6

1 1

2 2

3 3

4 4

- 40 -

#EV#

11. EXPLODED VIEW

CASE PARTS

CAUTION: Use the part number to order part, not the position number.

103B

281A

271C

282E

103A

402A

501F

271A

402A

410A

409D

503G

503F

411A

501A

304A

903D

610A

503D

503C

409B

503E

120B

125D

S38

619B

145B

105A

314A

419B

318A

317A

327A

308A

310A

307B

410G

309A

328A

405B

307A

312A

420A

412D

329C

405B

319C

319A

323B

262H

328B

406B

903E

S01

610A

128E

128F

106A

305B

305C

409B

106A

158E

405A

315A

S22

903B

158A

282B

S01

301A

418A

401A

282F

145A

319E

405F

405G

404A

405C

329A

332A

903A

135C

305C

305B

903B

103C

105F

- 41 -

#EV#

FREEZER PARTS


145F

131A

136B

248F

248E

237C

136A

145C

- 42 -

#EV#

REFRIGERATOR PARTS


147C

147B

147A

141D

141A

149C

141B

141C

S24

141E

142A

140B

142E

142D

103E

S24

128M

128G

128C

278C

S24

128A

103E

170A

141B

141C

141A

149E

167B

146A

168A

154A

151A

151A

305D

155B

- 43 -

#EV#

DOOR PARTS


231B

230B

233B

233C

104E

241F

241C

233G

233E

241C

237A

241C

237A

233H

233F

233D 233A

230A

231A

212G

244A

212J

241C

241C

212J

244A

241C

286A

243A

262E

243B

250B

249A

249E

243B

262E

286A

243A

250A

249J

621B

250B

621C

200A

203A

201A

212J

212A

249B 249F

249K

- 44 -

#EV#

WATER & ICEMAKER PARTS


602A

S28

600C

600A

- 45 -

618A

622A

616E

623C

622B

627A

S29

619C

262D

619A

S31

April, 2009

No results