LG LRSPC2661T User Manual REFRIGERATOR Manuals And Guides L0301008

LG Side by Side Refrigerator Manual L0301008 LG Side by Side Refrigerator Owner's Manual, LG Side by Side Refrigerator installation guides

User Manual: LG LRSPC2661T LRSPC2661T LG REFRIGERATOR - Manuals and Guides View the owners manual for your LG REFRIGERATOR #LRSPC2661T. Home:Kitchen Appliance Parts:LG Parts:LG REFRIGERATOR Manual

Open the PDF directly: View PDF .
Page Count: 77

WARNINGS AND PRECAUTIONS FOR SAFETY

Please observe the following safety precautions in order to

use safely and correctly the refrigerator and to prevent

accident and danger during repair.

1. Be care of an electric shock. Disconnect power cord

from wall outlet and wait for more than three minutes

before replacing PWB parts. Shut off the power

whenever replacing and repairing electde components.

2. When connecting power cord, please wait for more than

five minutes after power cord was disconnected from the

wall outlet.

3. Please check if the power plug is pressed down by the

refrigerator against the wall tf the power plug was

damaged, it may cause fire or electric shock.

4. ff the wall outlet is over loaded, it may cause fire. Please

use its own individual electrical outlet for the refrigerator.

5. Please make sure theoutlet is propedy earthed,

particularlyin wet or damp area.

6, Use standard electrical components when replacing

them.

7. Make sure the hook is correctly engaged.

Remove dust and foreign matedals from the housing

and connecting parts.

8. Do notfray. damage, machine, heavily bend, pull out,

or twist the power cord.

Please check the evidence of moisture intrusion in the

electrical components. Replace the parts or mask it

with insulation tapes if moisture intrusion was

confirmed.

10. Do not touch the icomaker with hands or tools to

confirm the operation of geared motor.

11. Do not let the customers repair, disassemble, and

reconst_ct the refdgerator for themselves. It may

cause accident, electTic shock, or fire.

12. Do not store flammable materials such as ether,

benzene, alcohol, chemicals, gas, or medicine in the

refrigerator.

13. Do not put flower vase, cup, cosmetics, chemicals,

etc., or container with full of water on the top of the

refrigerator.

14. Do not put glass bottles with full of water into the

freezer. The contents shall freeze and break the glass

bottles.

15. When you scrap the refrigerator, please disconnect the

door gasket first and scrap it where children are not

accessible.

-3-

SPECIFICATIONS

ITEMS

DIMENSIONS (ram)

NET WEIGHT (kg)

COOLING SYSTEM

TEMPERATURE CONTROL

DEFROSTING SYSTEM

SPECIFICATIONS

960(W)x915(D)×1795(H)

169

Fan Cooling

MicomControl

FullAutomatic

Heater Defrost

Cyclo-Pentane

P,T.C, Starting Type

Fin Tube Type

Wire Condenser

R134a (210g)

FREOL @15G (330 cc)

1_0.83

MOLECULAR SIEVE XH-7

ITEMS

FIRST DEFROST

DEFROST CYCLE

DEFROSTING DEVICE

INSULATION

COMPRESSOR

EVAPORATOR

CONDENSER

REFRIGERANT

LUBRICATING OIL

DRIER

CAPILLARY TUBE

<Front View>

ANTI SWEAT HEATER

ANTI-FREEZING HEATER

FREEZER LAMP

REFRIGERATOR LOWER LAMP

REFRIGERATOR UPPER LAMP

DISPENSER LAMP

1072

SPECIFICATIONS

5-6 Hours

13- 15 Hours

Heater, Sheeth-AL

Heater, Sheatb-ML

Heater, Drain

Dispenser Duct Door Heater

Dispenser Heater

Frame LCD Heater

Chilled Room DuctHeater

Damper Heater

Tube Inject Heater

60W (1 EA)

60W (1 EA)

30W (2 EA)

i15W(1 EA)

<Plane View>

L

i

!

I

i

-4-

PARTS IDENTIFICATION

Manag

Reset S/W

Cover PWB

Frame

Display

Lamp

Ice &Water

Dispenser

Button

Remote Control

Receiver

Camera

Banklce

Control Box, R

Dairy Corner

Cover, Lamp-R(U)

Cantilever Shelf

Cover,

Shelf-F

Supporter

Basket

Cover Lower

Adjust Screw

(left)

Egg Box

Snack Comer

Slide Out

Cantilever Shelf

Cover

Guide Bottle

Cover, Lamp-R(L)

FruiUVegetable

Drawer

Drawer

Bottle

\\

AdjustScrew

(right)

Vegetable/Chilled Drawer

Convertible Switch

*Optional Part

.5-

HOW TO INSTALL REFRIGERATOR

1. How to Adjust Door Height of Refrigerator

•Make the refrigerator level first. (ff the refrigerator is not installed on the fiat floor, the height of freezer and refrigerator

door may not be the same.)

1. If the height of freezer door is lower than that of

refrigerator compartment :

2. If the height of freezer door is higher than that of

refrigerator compartment :

Insert a driver B into the groove A of edjusting screw

and rotate driver in arrow direction (clockwise) until the

refrigerator becomes horizontal.

Insert a ddver B into the groove A of adjusting screw

and rotate driver in arrow direction (clockwise) until the

refrigerator becomes horizontal.

-6-

HOW TO INSTALL REFRIGERATOR

2. How to Install Water Pipe

•Before Installation

t. The icemaker requires the water pressure of 1.5 -

8.5kgf/cm 2. (It is acceptable if city water fills a cup of

180cc with water for 10 seconds)

2. Install booster pump where the city water pressure is

below 1.5kgf/cr_- for normal operation of water and ice

dispenser.

3. The total length of water pipe shall be less than 12rn. Do

not bend the pipe at right angle. If the length is more

than 12m. there will be troubles on water supply due to

water pressure drop.

4. Please install water pipe where there is no heat around.

5. Be sure that the filter does not sterilize.

6. The life span of water filter depends on the use

conditions. But the filter is generally replaced in every

six months. Install filter where replacement can be easily

performed,

2-1. When connecting directly to the water tap.

•Please confirm the following installation parts.

Valve Feed Rubber, Packing Connector, Pipe

Connector, Pipe Tape, Teflon

Class. Shape and Spec. Nomenclature PINo Remarks

Conve- _. [_"_ Valve Feed 5221JA3001A Common Use

rtible

Water

Valve

Water _ Q 4932JA3003A

Conn- _____ 6631JA3004A No Holes

ector 6631JA3004B

3920JA3001 B

Connector, (MECH)Pipe

No Holes

Connector,(MECH)Pipe

ConversionConnector(3/4")

BalanceConector(3/4")

Packing(o24x3t)

Connector,(MECH) Pipe

ConversionCeenector(W25)

BalanceConectcor(W25)

Packing(a23x3t)

Connector,(MECH)Pipe

ConversionConnector(W28)

BalanceConector(W28)

Packing(e26x3t)

Connector,(MECH)Pipe

ConversionConnector(I/2")

BalanceConector(1/2")

Packing(ol 9x3t)

4932JA3003B

6631JA3004C

6631JA3004D

3920JA3001A

4932JA3(X)3C

6631JA3004E No Holes

6631JA3004F

3920JA3001C

No Holes

4932JA3003D

6631JA3004G

6631JA3004H

3920JA3001D

-7-

HOW TO INSTALL REFRIGERATOR

2-2. Connection of Pipe Connector A and B.

1) Turn off main valve of water pipe.

2) Disconnect water tap from piping by loosening nuts.

3) Connect pipe connector A and B to piping alter sealing

the pipe connector with sealing tapes.

4) Connect feed valve to pipe connector A.

5) If there is only one tap water pipe, connect pipe

connector A only and install feed pipe.

Caution : oFeed pipe should be connected to cold water

line. If it is connected to hot water line, trouble

may occur.

• Please check rubber packing when connecting

feed pipe.

Pipe Connector B Feed

\A

How to wind

SealingTapes.

Single Lever Type Faucet

(general)

Two Hands Type Faucet

Feed

Valve

Gene_lType

Feed

Valve

Single LeverTypeFaucet(one

hole, techtypeand hand spray)

Valve

2-3. Water Supply

1) After the installation of feed water, plug the refrigerator

to the earthered wall outlet, press the water dispenser

button for 2- 3 minutes, and confirm that the water

comes out.

2) Check leakage at connecting part, then arrange water

tube and locate the refrigerator at its regular place if

there is no leaking.

-8-

HOW TO INSTALL REFRIGERATOR

•Install Water Filter (Applicable to some models only)

•Before Installing water filter

1. Before installing the filter, take out the top shelf of the

refrigerator after tilting it to the direction (a) and lifting it

to the direction (b) and move it to the lower part.

2. Remove the lamp cover by pressing the protrusion

under the cover and pufiing the cover to the front.

•Installing water filter

1. Initial installation of water filter

Remove the filter substitute cap by turning it

counterclockwise (a) by 90 degrees and pulling it down.

Note : Keep it safe to use it later when you do not use the

filter.

Remove the red cap from the filter and attach the

sticker, Insert the upper part of the filter (a) after

aligning with the guideline marked on the control box,

and fasten it by turning it clockwise by 90 degrees.

Note : Check that the guideline and the fastening

indication line are aligned.

_ubstitute

_=_= Adhesion

_ _icker

2. Replacement of water filter

While holding the lower part of the filter, turn it

counterclockwise (a) by 90 degrees and pull it down.

Note : Check that the guideline and the loosening

indication line are aligned.

Control box

guide line

and the fastening indication line

JI

O_i ;ontrolbox

"" " the guide line

and the loosening indication line

•After installing water filter

Reassemble the lamp cover and the top shelf of the

refrigerator. To place the top sheff of the refrigerator, raise

the front part of the shelf a bit so that the hook of the shelf

is fit into the groove.

In order to clean the water filter system, drain water for

about 3 min.

Note : Then open the door of the refrigerator and check for

water droppings on the shelf under the filter.

-9-

HOW TO INSTALL REFRIGERATOR

3. How to Control the Amount of Water Supplied to icemaker.

3-1. Confirm the amount of water supplied to the icemaker.

t. Pull out the ice bank in the upper pert of the freezer compartment.

Caution : * Do not put hands or tools into the chute to

confirm the operation of geared motor.

it may damage refrigerator or hurt hands.)

•Check the operation of motor with its

operation noise.

2. Apply electricity after connecting water pipe.

1) Press test switch under the icemaker for two seconds as shown below.

2) The bell rings(ding-dong) and ice tray rotates and water comes out from the icemaker water tube.

3) The water shall be supplied two or three times into the tray. The amount of water supplied for each time is small

Put a water container under the ice tray and press test switch.

4) When ice tray rotates, the water in it will spill. Collect the spilt water and throw away into the sink.

5) When ice tray has finished rotation, water comes out from the water tube. Confirm the amounts of water in the ice tray.

(refer to fig. The optimum amount of water is 110cc)

Confirm the amount

of water

Test Switch

Ice maker

i '

*It is acceptableiftheadjusted level of water is a bit smaller than optimumlevel.

-10-

HOW TO INSTALL REFRIGERATOR

3-2. Control the amount of water supplied to the

icemaker.

Caution : •Please unplugthe powercordfrom thewall

outletand waitfor more than three minutes

before disconnectingPWS coveras 310V is

appliedin thecontrolpanel,

1. Disconnect PWB cover from the upper part of the

refrigerator.

j(+) Driver

Caution : When adjusting the amount of water supplied,

adjust step by step. Otherwise the water may

spill over.

Switch ON

Switch OFF

PWB(PCB), Assembly

3. When adjustment of control switch for the amount of

water supplied is complete, check the level of water in

the ice tray.

2, Adjust theamountof water suppliedby usingDIP

switch.

Confirm the amount

of water

• Water Supplying Time Control Option

SWITCH NO Water Suppling

S/W1 SNV2 S/W3 Time

OFF OFF OFF 6Sec.

ON OFF OFF 4 Sec.

OFF ON OFF 4.5 Sec.

ON ON OFF 5 Sec.

OFF OFF ON 5.5 Sec.

ON OFF ON 7Sec.

OFF .... ON ON ..... 8Sec.

ON ON ON gSec.

Optimumle ,"

"'_b_ _o_ SS

1) The water supplying time is set at five seconds when the

refrigerator is delivered.

2) The amount of water supplied depends on the setting

time and water pressure (city water pressure).

3) If ice cube is too small, increase the water supplying

time. This happens when too small water is supplied into

the ice tray. (eg: change 5 to 5.5 seconds)

4) If ice cube sticks together, decrease the water supplying

time. This happens when too much water is supplied

into the ice tray. (eg: change 5 to 4.5 seconds)

-11 -

ICEMAKERANDDISPENSEROPERATIONPRINCIPLEANDREPAIRMETHOD

2°4. Ice Ejection Control Function

1. This is to eject ice from ice maker cube mould after ice making is completed.

2. if Hall IC signal is on within 3.6 seconds after ice ejection motor rotates in normal direction, it does not proceed ice

ejection but waits, If the ice bank is full ice ejection motor rotates in normal direction in every hour to check the condition

of ice bank. If the ice bank is not full, the water supply control starts after completion of ice ejection control. If the ice bank

is full, ice ejection motor rotates in reverse direction and sops under ice making or waiting conditions.

3. if ice bank is not full, ice ejection starts. The cube mould tilts to the maximum and ice is separated from the mould and ice

checking lever raises.

4. Ice ejection motor stops for 1 second if Hall IC signal changes from OFF (low) to ON (high) after 3.6 seconds when ice

ejecSon motor rotates in normal direction. If there is no change in Hall IC signals within 1 minute after ice e}ection motor

operates, ice ejection motor stops as ice ejection motor or hall IC is out of order.

5. If ice ejection motor or Hall IC is abnormal, ice ejection motor rotates in normal direction to exercise initial operation. It

resets the ice maker if ice ejection motor or Halt IC is normal.

6. The mould stops for 1 second at maximum tilted conditions.

7. The mould returns to horizontal conditions as ice ejection motor rotates in reverse direction.

8. When the mould becomes horizontal, the cycle starts to repeat:

Water Supply ..* Ice Making *Ice Ejection .._Mould Returns to Horizontal

r Bank is

HALL IC

OUTPUT

SIGNALS

Bank is "_

HALL IC

OUTPUT

SIGNALS

IICE CHECKING

Maximum tilting

point

o ' ' =-)'/'

• , r

ii i

i1_ IIi

, ,,

OFF

ON

ICECHECKING LEVEL 30° i I

i p / I i t

.... L.... J__J.

t t t i i

-8' O" 10" 32' 41" 53" 68" 80'

Lock Ice making Ice Checking

(o_n_ i:,_nt)

2±1 sec =I

9:_3 sec

I I

160" 170'

IceEjection Lock

L

8+-3sac IL

<Timing Chart During Ice Ejection>

-22 -

ICEMAKERANDDISPENSEROPERATIONPRINCIPLEANDREPAIRMETHOD

2-5 Test Function

1. It is to force the operation during operation test, service, and cleaning. The test switch is mounted under the automatic

ice maker. The test function starts when the test switch is pressed for more than 0.5 second.

2. Test button does not work during ice ejection and water supply. It works when it is in the horizontal conditions. If mould is

full of ice during test function operation, ice ejection control and water supply control do not work.

3. When test switch is pressed for more than 0.5 second in the horizontal conditions, ice ejection starts irrespect of the

mould conditions. Water shall be splashed it test switch is pressed before the water in the mould freezes. Water shall be

supplied while the mould returns to the horizontal conditions after ice ejection. Therefore the problems of ice ejection,

returning to the horizontal conditions, and water supply can be checked by test switch. When test function performs

normally, buzzer sounds and water supply shall carry out. Check it for repair if buzzer does not sound.

4. When water supply is completed, the cycle operates normally as follows: Ice making • Ice ejection •Returning to

horizontal conditions , Water supply

5. Remove ice from the ice maker cube mould and press test switch when ice maker cube mould is full of ice as ice ejection

and water supply control de not work when cube mould is full of ice.

2-6. Other functions relating to freezer compartment door opening

1, When freezer door is open, ice dispenser steps in order to reduce noise and ice drop.

2. When freezer door is open during ice ejection and cube mould returning to horizontal condition, ice ejection and cube

mould level return proceed.

3. When freezer door is open, geared motor and cube ice solenoid immediately stop and duct door solenoid stops after 5

seconds.

4. Water dispenser stops in order to protect water drop when freezer door is open.

5. Test function operates normally irrespect of refogearator cempadment door opening.

- 23 -

ICEMAKERANDDISPENSEROPERATIONPRINCIPLEANDREPAIRMETHOD

3. Ice Maker Troubleshooting

• Troubleshooting: it is possibleto confirmby pressingfreezer and refrigerator temperature controlbuttons for more

than 1 second.(ice maker is normalifall [edeare on): referto troublediagnposisfunction in MICOM

function 2-8 (page 18)

No

r

/ejesb_nand level return

/normalwhen test switch is

"_ pressed for mere than 0.5 second? /

Does the bell /

Normal

Failed DC Power

•Check DC power (5V, 12V).

_ Chang e main PWB

Failed ice making sensor

• Check the resistance of

both ends (1,2) of ice making

sensor of CON9.

• Defects between ice making

sensor and board

(Pin No. 60oflCl)

Failed Ioe Maker Unit

•Is the resistance of both ends

(9,10) of ice ejection motor of

CON9 between 18 and 22D?

• Is ice ejection motor drive circuit

(ICll and peripheral circuits)

normal?

• Defects between Hall IC and

Board (Pin No. 42 of IC1).

• Confirm ice ejection and level

return when pressing

test switch.

Replace Ice making ]

Sensor

_._ Replace Ice Maker Unit [

IReplace Main PWB I

Failed ice maker unit test switch

• Are both ends (5,6) of CON9

test switch open?

•Defects between test switch

and board (Pin No. 38 of IC1).

• Are both ends (3,4) of CON9

ice maker stop switch short?

Poor water supply

• Is power applied to water

supply valve?

•Does the water supply

valve work normally?

• Is the water supply line

normally connected?

_ Replace Ice maker Unit I

Replacewatersupplyvalve I

- 24 -

ICEMAKERANDDISPENSEROPERATIONPRINCIPLEANDREPAIRMETHOD

4. Ice maker circuit part

IC1

(MICOM)

P64

[,,,,_4)

P41

CON9

ICE MAKER

MOTOR

The above ice maker circuit is applied to the GR-D267 and consists of the ice maker unit pert installed at the freezing room

and the ice maker ddving part of the main PWB.

Water supply to the ice maker container is done by opening the valve for the established water supply time by operating the

container via a solenoid relay for the ice valve of the solenoid valve placed at the M/C room. If the water supply time is

elapsed, water supply is automatically stop. This circuit is a circuit for implementing function such as ice removal, ice-full

detection, horizontal balancing end sense of ice-making temperature for the ice*maker container. Since ice-making

temperature sense is same as Jnthe temperature sense circuit part of the main PWB, refer to it.

Test switch input detection of the ice-maker is same as in the door switch input detection circuit of the main PWB.

1. This function is used in operation test, service execution and cleaning etc and performed if pressing the test switch

installed at the automatic ice-maker itself for more than 0.5 second.

2. The test switch operates in the horizontal status and test function is not input in the water supply operation. Ice removal

control and water supply control is not performed if full-ice is arrived during the operation of test function.

3. If pressing the test switch for 0.5 second or more in the horizontal status, ice removal operation is immediately performed

irrespective of the generation conditions of ice at the ice*making tray. Therefore, care is required since water may

overflow if operating test function in the water state that ice-making is not done. A cycle of water supply is performed in

the horizontal balancing operation after ice removal operation. Therefore, you can check any problem of ice removal

operation, horizontal operation and water supply. In this case. if test function is normally performed, "Ding~" buzzer sound

rings and water supply control is performed. Thus, no ringing of"Ding~" buzzer sound means failure and repair check

must be performed.

4. If water supply is completed, operation in the normal cycle of "ice making -_ ice removal ,returning to hodzontst status

* water supply".

-25 -

EXPLATION FOR MICOM CIRCUIT

1. Explanation for PWB circuit

1-1. Power circuit

Power circuit consists of SMPS (SWITCHING MODE POWER SUPPLY) power. The SMPS consist of the rectifying part

(BDI, CE1) converting AC voltage to DC voltage, the switching part (IC2) switching the converted DC voltage, transformer

transferring energy of the primary side of the switching terminal to the secondary side and the feedback part (IC3. IC4)

transferring itto the primary side.

Caution : Since high voltage (DC310V) is maintained at the power terminal, please take a measure after more than 3

minutes have passed after removing power cords in the abnormal operation of a circuit.

Voltage of every part is as follows:

Voltage 230 Vac 310 Vdc 16 Vdc 12 Vdc 15.5 Vdc 5 Vdc

CONf

-34 -

EXPLATION FOR MICOM CIRCUIT

1-2. Oscillation circuit

Oscillation circuit is acircuit with the purpose of generating basic time for clock occurrence for synchronization and time

calculation in relation with information transmission/reception of inside elements of IC1 (MICOM). The OSCl must always

use rated parts since if SPEC is changed, time calculated at the IC1 may be changed or no operation is done.

CS7S4 00MGO_

ICl

(MICOM)

xeur

1-3. Reset circuit

The reset circuit is circuit allowing various parts such as RAM inside of MICOM (ICl) to initialize and the whole of function to

start from the initial status, when initial power is input or when power is applied again to MICOM by a spontaneous power

failure. 'LOW' voltage is applied to the reset terminal of MICOM in the beginning of power supply for a constant time (t Ores).

Reset terminal during general operation is 5V (No MICOM operates in failure of RESET IC).

1IC9 3_ #

IC1

(MICOM)

- 35 -

EXPLATION FOR MICOM CIRCUIT

1-4. Load/dispenser operation, door opening circuit

1. Load driving circuit

In even if opening the door of freezing room or cold storage room during operation of fan motor at the freezing room, this

circuit does not stop and operates at the standard RPM. In addition, if doors of freezing room or cold storage room, the

fan motor normally operates at the RPM previously operated.

(A). (B), (C) and (D) of door switch for the freezing room or cold storage room are connected to the door open sensing

circuit in parallel toward both ends of switch to determine door open at MICOM.

_€Since a door switch of the home bar is connected to door switch (C), (D) of the cold storage room, it senses door opening

if even one of both is opened.

The fan motor is immediately stop if opening doors of the freezing room or cold storage room at the TEST mode and it

immediately operates if closing them.

Type of Load

vleasudng part (IC6)

Status OFF

COMP

No.16

Frost

Removal

Heater

No.15

AC

Converting

Relay

No.14

R-room

LAMP

No.13

Within 1 V

AC

Motor

Damper

No.14 (IC7)

Damper

Heater

Control Box

Heater

No.15 (IC7)

12V

Pipe Heater

No.ll (IC7)

F-LAkIP _@

)

FUSE-M_oNC_ _ L._

CON4

DAMP_ MO1"OR

_-_'1 _ _-I1 _ _Tl_t

ZDCR $/V R-DDQR

CON5

_g_2

DIS

DIB

14 _4

IIS 12

I

ICI

(MICOM)

=73

_Tt

i_11)

'_'112)

PeTZ

P6_

P03

- 36 -

EXPLATION FOR MICOM CIRCUIT

3. PWB parts diagram and list

3-1, PWB Ass'y, main part diagram

- 47 -

EXPLATION FOR MICOM CIRCUIT

3-2. Parts list

NO. DWG, NO. _SREC' =IAX;I_ RE_ARK

1 ;BTOJBO01? _:_B.MNN R.I_tIOTA) _00 SA_ t_1.6

M 70JOr2013 2: ?.74mH

2_ _AH[L 1R,,LNS

3

_Z3OJB_010 E202_IT-11 b'ON2

•30JB_Cma [2nF+T_,_-lt) CON+

6- }$30jg_Q_G i£302-1T-0_ ._E _CONI

7

_0 s63o,am=0 =_-_t4_ co_3

WAFER mT_-Ilr) C0N6

_,_dB_07J mT_l-t(im} _C0N9

15 IZZJB2Ot__ _COU OtP B4pagCa41N r0S_9_ Icl{'0Z_sml

KIA7BOOSAP K+E.C

16 _ ,tg{;tJ_TOH

<IA7042AP <+E,(

17 0(_R't_ _ESET IC IC9

18 -- 3RI_4_ +C IC_,7

19--

_0 '_21MB_D36: ALD11Z N_ RY_

tF*ILOTVAL_E

3_

32

osc1

12_2.aooole CsTS4.OO_,___ MURAt^

tl0_,Jl_l_B =NRt_B2 IL_ JIN

_R_ST_

37 )ORlO_ 3(107 O1

_8 _ _/_/_ _R302 aa.TA D3,4

,*I11BItJ_l_; IN400+

4_ _ __D3S_A6O _BD1

,43 30m141_4_ ;II_'I_ IN4148 1_ mJ_li'l_'tt

_400_Ol_/ _ B_( N47_5(6.2' _._A ZD1,2

ITt NO+ O'h_, NO. _i_St_JF]_(_ SF4[C" dAKL'11 RI_4,t_K

+5 :[2271F¢3_ ;'_KOII_ 220uF/16V UE'R_ CE5

46 :I_tKLX_ 100uF/25V CIEB

48 _;'_o _ocuF/25v _1 _ c_4

_ 49 _t_lO t'Oeqllll_ oouFi50v C_2

z5_ _t_._ !20uF/zsv _ CE6,7

51 0CE_R_ r_e_E_*_iF7uF/460v _tH_E?

_:_241N8]_ 224,/1QOV ;EIL CC4

1_4, 0C_21Q2510 _C_I]_ _21 /2KV CC2

_55 _<+____ +71/.',ov CCl

2 58 _(22.301(_ 223/50V ;C17,1g

1 59 O_P_670 3¢_'/_7swc CMI

6O

62

-- 64--

165 _1/IW tocP

66 _SB_ 1/2W t6Z

z 67 _1t0_ 620J 1/2W 139.4_

+6B E560(4 t/2w E2

6g _330 I/4W t38,43

170 m5BO 1/4W le

73 [l_'_T

7 74 _1_01_ _47,50,5_59

75 m_m_ 3,9K 1/4W 136,4,3

_4,t3,21P,_

J_77 R_I0_G_ 1OK 1/+V_ _11,37,4_

_'-78i--__ RCF1

79 1OK 1/4_, _CR1

80 Rm_ _T_ RtJ__ I_

B1 MI_O _ t+'1,mUl

B2 N2Sl_ 26.1KF 1/4_ _01.RRI,2

NI201k_ 12_<; _

_tK60 2._K 2"_, _:SI(DAMPER)

-- :.s_)

JUMp WlRE

84 B_2ES,_ 33 1/8W _5

_5 R51g_4{57_ 1K 1/8w _8

86 _0too_z 1<:o 1/sw _10

It 87 _2K 1/8W

_188 ;4;_72 PIPRE_5]_ 4,7K 1/8W ROHM _'_2_42

91 1_1004E672 1M 1/OW R12

-48 -

EXPLATION FOR MICOM CIRCUIT

94 _;<TAt 705 i0_4

95 _ _ <TC31S_ K.E,( 13.s

96 _,'RC106_ _--

97 _eeem/:o_=R,IZa pFS3510A( s._4_ _1

98 ooo.18_Bo_Jr_ST S,i_ ;KHV1091C TACt ;Vn

99 _--m_ _P,DIFOTAX =_r2

0.6X7,Smrr J_7

k380701_ =M_? _1 O,6XlOmm _-_26

0.6X12.Sm.1

100 )360701_ JUMp WIRE O,6XlOmm F_'JF'2(FUSE_1

JCRI

k360707_ JUMp _O-SXlOmm

,_R4

OPt

1_60701= JUmp IA_ O.6XlO_m

_360701_ J_ v,_[ O.6XlOt_m I41{H/B-H]_

102 _o_1oo7_ I_!Is= ) T_

103

104 _3v97o02o TNC

!,_HiTA) -- .1

106 -- 12mH/t^) -- -_

10_ 3J024471 _USE 15A/250V

112

lt3 :_0103_ _50 TA_ 78811_1-2 _.E,T TAB1.1

11_ 4_111004 IIBI_ Hg3A

- 49 -

EXPLATION FOR MICOM CIRCUIT

3-3. DISPLAY ASSY part diagram

O_y NO P/NO

t1 _304TWTOO4#

12

13

24

1

7

- 8

IE 9 )IZZJBBOI3

10

I 11 ]ISTLKEOOBA

I 12 IISTLKEOO3A

I 13 )ISTLSEOOIA

I 14 )ISTLKEOOAA

415 )ISTLKEOOGA

I 16 ]ISTLKEOOGA

17

- 18

I19 J570-OOOIBB

20 -

21

22

-23 DCE337CH630

2 24 OCEIO7VFGDC

- 25-

126 DCE476VHGDC

-27 -

8 2B OCKIO4DK94A

29 -

30 -

-310RDIOOOG676

1320RDBBOOE672

Z3 330RB3900G676

l340RD6200G676

35 -

-36 -

2 370RD100IE672

23BORDBOOIE672

13 390RD4701EG72

I 4o ORDIGOBE672

1410RBIOO4E672

-4_ ORD4702E672

t430RDIBOlE472

14A ORDlOO2E472

14_ OBZRMOO1BBA

I4E-

95 47 ODLLEOO28AA

t 4t _908JBBOO3A

64_ _600RRTOO_J

5CI-

51-

5zI-

DESCRIPTION SPEC

LED TN MONO 27PIN

PWB FR-4

REFLECTOR PC ABS

TAPE NITTOGOD(WBMM)

SHEET MTN-WX5(141mA4.25mm)

WAFER SHAW250-04

IC_BRAWING TNP87CHBIF BO_QFP

_IC_STANDARD LOGIC

lIE,STANDARD LOGIC

ICISTANDARB LOGIC

ICjSTANDARD LOGIC

ICISTANDARB LOGIC

IC_STANDARB LOGIC

MAKER REMARK

WINTEK TPB-381

TSUJIBEN

YEON-HO CONIOI

TOSHIBA ICI01(E=F)

KIA78LO5F KEC ICI02

KIA7042AF KEC ICI03

S-93C46ABFJ EEPROM SEIKO ICt04

KRAI06S KEC QI05

KRCI06S KEC QIOI~QI04

KTAIBg8 KEC QI06

RESONATOR CST4,0OMGW MURATA 0SC101

CAPACITORFIXED ELECTROLYTIC

CAPACITOR,FIXED ELECTROLYTIC

CAPACITOR_FIXEB ELECTROLYTIC

CAPACITDR_FIXED CERAMIC

330UF SHL,SD 25V SAMWHA CEIOI

IOOUF NV IGV SMD RUBYCBN CEIO2rI03

47UF MV 25V SMD RUBYCDN CEI04

IODNF 2012 50V MURATA CCI01"CCIOB

100 OHM 114 W 5X 3216 _OHM

220 OHM I/8 W 5% 201B _OHN RII7

390 OHM I/4 W 5X 3216 !OHM RI23-R145

620 OHM 114 W 5% 3216 ROHM R146

RESISTOR_FIXEB CARBON FILM

RESISTOR_FIXED CARBON FILM

RESISTOR,FIXEB CARBON FILM

RESISTORIFIXED CARBON FILM

RESIBTORrFIXEB CARBON FILM

RESISTOR,FIXED CARBON FILM

RESISTOR,FIXED CARBON FILM

RESISTOR_FIXED CARBON FILM

RESISTOR,FIXED CARBON FILM

RESISTOR,FIXES CARBON FILM

RESISTOR,FIXED CARBON FILM

RESISTOR,FIXED CARBON FILM

DIODE_ZENERS

WIRErJUMP

LEg

BUZZER

SWITCH,TACT

IK OHM rib W 5% 2012 ROHM RIlB,]i9

2K OHM 118 W 5X 201B ROHM RIOI_IO2

4,7K OHM IIB W5% 2012 ROHM R103-115

15K OHM I/8 W 5% 201B RDHM R116

IM OHM I/8 V 5X 2012 _OHM RIB0

47K OHM i/8 V 5X 2012 RDHM -

I.BK OHM lib W i% 2012 ROHM RI22

IOK OHM 11B W IX 201_ ROHM R121

RLZ ROHM 5.6V 20MA ROHM ZBI01

.- -OPt

iLTBB32-UR-lBOT AMBER IGOB(590nm) LEDTECH LDIOI-LDI95

OH-BOB BUJEON PIEZO 4KHZ B5BB BUJEON :BUZZER

JTPII38A JEIL 12V DG 50MA SMD JEIL SWIOI'SWI06

-50 -

EXPLATION FOR MICOM CIRCUIT

4. PWB circuit diagram - PWB circuit diagram may vary a little bit depending on actual condition.

- 52 -

EXPLATION FOR MICOM CIRCUIT

)

T

T_

=-. T=

v

.. . T=,.

E

_ mm

-53 -

CIRCUIT

THE CIRCUIT DRAWINGS

CIRCUIT DIAGRAM

MODEL : GR-D267**U

-I.!O_ e_/tpA_IW&_ FrcA_R,DOOFI_N_,CA=_.JT0_pAIT_,PI.UGWI=E,C_FIFJ_ E_qrtHpAR'_,

Ft.OTV_._EONQ;_C_IITDIA_qAt_&qESl_MEC'TTOCf,IiV_EIND_RIE_T _/_O ACCORDANQE_M0_I_ 'i'YPF_

*N:HBrf_qL PWB._SEMBLY,MAIN

m_

PWBASSEMBLY,DISPLAY

SUBCONTROLLER

BK : _._'( M :BROW_ BO :BRIOpITOf_,_IE QY :E_Y RD: RED

Yr. : YELI.OW 13N : _qEEN PR : PUI=P.JE WH : wHr_ Wt'b_K : _

_B ;_O'I_UE P'_ :PINK GN/W_ :61R_/yLqJJ_W BlaW_:BI.UF2_ITE FIB/VAH:RE_Nt,.41TE

3854JD1076B

-54-

TROUBLE DIAGNOSIS

1.3¥ouble Shooting

CAUSES AND CHECK POINTS. HOW TO CHECKCLAIMS.

1. Faulty start 1) No power on outlet.

2) No power on cord.

Bad connection between adapter and outlet. (faulty adapter)

The Inner diameter of adapter.

The distance between holes.

The distanse between terminals.

The thickness of terminal.

Bad connection between plug and adapter (faulty plug).

The distance between pins,

Pie outer diameter,

3) Shorted start circuit.

Nopeweron -Disconnededcopperwire. [Pr_c_dgolsca'm_.

_wer_:_. _ Fa_ys_

INemal_Ncat sh_,

-Faulty terminalcontact, [Loosecont_t.

/ -La_d_,_r_ebe_v_

[malete_ninal.

_ -Thin_role _rrr_nal.

Temlir_ olscer_ected.

L Badslseveasseml_y

._.. Weak connec_

-Short_sat_dc0at_mgth.

- Wornout t_l btade.

- Noe_c_ic

)ower co

thennoatat

- O.L.PIS oil,

I Sensorbreakage.

_tat is _.- Gas _aks completely.FSealedpartleak.

L Bellowsleak.

L FI_llty [e_ COt_(_Otl.

f Capadty of O.LP issinai,

Characte_s_sofO.LP ls13ed.

Badconne_on.

Po_ F InnertCCr wi_eblowsout

_Fa_'tyterminalcau_,ing(Cuwireiscut).

L Bad soldering,

-NO electncpower on c_%o_.ssor.-Faultycompresso_

-FaultyPTC. Powerdoesnct(z_c_ - Damage.

-Badcharact_si_.-Ini_ reslstan_isbig.

Badcennec_nwith[Tco Ioos_

compressor. Assemblyisnctpossble.

Badterminal_.

4) During defrost. FStart automaticdefrost.

LCycle was set at defrost when the refrigerator

was produced,

* Measuring instrument :

Multi tester

• Checkthe voltage.

Ifthevoitageis within+85%

ofthe ratedvoltage,it isOK.

• Checktheterminal

movement.

• Check both terminals of

power cord.

Power conducts :OK.

No power conducts : NG

• Checkboththermostat

terminals.

Powerconducts:OK.

If not:NG.

• Check both terminals of

O.L.R

If power conducts ; OK,

ffnot: NG.

•Check the resistance of both

terminals.

At normal temperature6:

OK.

If disconnected : _.

- 55 -

TROUBLE DIAGNOSIS

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

2, No cooling, 2) Refrigeration system is clogged.

Moisture - Residualrn_ AirBIowing.

dogged, in_ evamra_r.

-Residualrndsture.

Noelec_c In_ d_r

powe"on capadty

tbean-

ostat.

-Residualrnoisture

_npipes,

i Notperforated.

TooshorL

Impo_UereoL_re

- Leaveitinlf_eair. _ Duringrest _ne,

LNterwork.

Capsaremissed.

[ Notdr_din_heoompr_.

Elapsedmore_a_ 6monthsa_erct'ying

Capsaremissed.

No pressurewheniUs open.

i o_yd_er- mettempera_ue.

i¢_._dsilagea_

Capsare missed. _ DudngfTa_0o_

LA_ing_k.

T_sh_n&

I.x_ _ _ssure.

Less d_/a_

Wedjo_ f'St_t P_e"_

dogged. Pipeg_os. Toolarge.

[_aged rues.

L TOOrnuchsdde_

- Dnerdoggeing. I Thesapillay tubeinserleddepth.- Toomud_.

_ M_ mere,-c_r heat

c_gedw_foragnrnater_,__Descantpo*d_.

Wetdoxides.

LI:Xieran_e

Reducedc_osssec_onbycut_ng.._eezed,

FO:_cap _sd_.

Foreignrnatedalck)gging.LFofe_j_n_tedalsa_einthepipe.

• Check the dogged

evaporator by heating (as

soon as t_e crack,Jngsound

begins, I_e evspora_r start

freezing)

• The evaporator does not coo

from the beginnig (no evidece

of mislure attached).

The evaporator is the same

as before evenheat is

applied.

- 56 -

TROUBLE DIAGNOSIS

CLAIMS.

3. Refrigeration

is weak.

CAUSES AND CHECK POINTS.

1) Refrigerant Partly leaked. FWeld.k:_tle_

Lparisleak

2) Poor defrosting capacity.

-Draln path(pipe) dogged. -InjectP/U,_todrainhose._ Inject_:)u_the

h_e.

L _wJth droin,

-ForeignmaterialsF P_J_mp_reut

peae_a_o_ S_ewAo_

_ O_er_egnraa_mab

- Capdrainis notdisc_'_cted.

-Defrostheaterdoesnot -- Pa_

generateheal _nneded. -__ TherrnostatiscuL

-Badcalking

star connec_en.

- Basernatenal

-T_ _scomx_d.

-w_efpene_on

- Badts,_nim&cx_f_caK:t

I_te I W_iscut.

heater -Hea_ngwire.

-Cor_act_t

_tweenhe,_

a_e_cw_

Dentby_nevapo'a_

- I:_r t_ninal cmtacts.

- heatCh_tder- WireiscuL

-Le_lwire.

-Hea_J_e.

-Cmtactmint

I:L-_weenhe.rigand

elecl_ wire.

Hea_w_e_scorroded

.w_erpe.er_.

-Badtwmi_ connec_L

•Me_ng F Thefusel:_&

fuse _ Para_ melted

_- Badterrrinalcontact.

HOW TO CHECK

• Checkvisually.

• Check terminal

Conduction: OK.

No conduction: NG.

If wire is not cut, referto

resistance.

P=power

V=Vol_age

R=Resistance

p=___

R

R=w

P

- 57 -

TROUBLE DIAGNOSIS

CLAIMS.

3. Refrigeration

is weak.

CAUSES AND CHECK POINTS. HOW TO CHECK

Residual

fresl - WeakheatfmrnhesS, F_ Heater_rated'

_-Heaterplate-rated.

L Hest_cord4_-rated.

-B_ heata'asserr_y.

He_p_te [Nocontadtodrain,

Loesenedstop_c_d.

(topendmiddle).

Def_Senson

-Tonshorldefros_g_me. i. Faun/d_arac_eris_cs,

• Sest-D(misdng,IocalJon._ess).

-S_c_& [ Ga_etgap.

L Air_llow6_rough_e fa_moto_

Badinsula_onofcasedes_

-Noautorua_cdef_os_g.

-Deftestdoes n_ ream.

3) Cooling air leak.

_Door sag Bad adhesion "

•

4) No coolingaircirculation,

-Faultyfanmotor. Fanmotor.F Selflocked.

_Wirei_c_

LBadtem¢_c_tact.

-Do_"swirl.

iCor_ct distance.

Fau_ _Butlonpressure,

!- Me_dc_a.

L- Contact.

_Refrigeratorandf_eze¢ switchreversed.

Buttonisnot pressed. Poordocr

attar

- Doorliner

(d_ner_n).

C_ _ner

line_

- M6alignment

- Badterr_

connection.

P/U I_id le_

• Check the fan motor

conduction: OK,

No conduction:NG.

-58 -

TROUBLE DIAGNOSIS

CLAIMS.

3. Refrigeration

is weak.

CAUSES AND CHECK POINTS.

4) No cooling air circulation.

[ Faultyfan rnotor.-- Fanis F FanshroxJc_ -Cisarance.

cons'_ained._ D_ e_ c_d_ct.

_-Accumulatodresidualfm_t

L Smallceding air Ins_cier_ F Fa_ovedasd.- Fas mLsuse,

disd'_rge, motorRPM I- BadlowtermperatureRPMdnara_eris_s.

L Rated ix_,_ m_use.

-- Faultyfan, F Fanmisuse.

_-Lseseoo_eO_.-N__Uysen,,_.

'- Insertdei_h.

-- ShonJd.-- Bent.

Iceand fcxe_nmate_ on rota6_ pats,

5) Compressor capacity, • I_ng misuse.

i- srseucapa_

L LOwvaltage.

6) Refrigerant F M_of_cylnde_

too much or too little, [- Wn0ngset_gc#refrk_L

L ]nsul_t c0mprass_ *Faultycom_

7) Continuous operation

- No contact of temperature controller. - Foreign materials.

8) Damper opens continuously.

iForeign materials F P/U liqukl_Jmp.

jammed. _EPSscmwWa_sediment.

Failed sensor. - position of sensor,

Characteristics F Bed cheracteds_cs of its own temperatee.

of damper. _ Parts misuse.

LCharge of temperature - Impact.

characteristics.

9) Food storing place, - Near the outlet of cooling air,

HOW TO CHECK

• Check visually after

disassembly.

• Check visuallyafter

disassembly.

- 59 -

TROUBLE DIAGNOSIS

i i

HOW TO CHECK

CLAIMS.

4. Warm

refrigerator

compartment

temperature.

5. No automatic

operation.

(faulty

contacts.)

6. Dew and

iceformation.

CAUSES AND CHECK POINTS.

1) Colgged cooling path,

FPIU Nqu_dleak.

Foreignma'_a_.I pM dump liquid.

2) Food storate. --7 Storehotf_:x)d.

_- St_e too rT_chatonce.

1) Faulty temperature sensor in freezer compartment.

E Faultycontact,

Faultytemperaturecharactedst_.

2) Refdgeration load is too much.

3) Poor insulation.

Food. F Toomuchfood.

_-Hotfood,

Fr_,J_ oper,__nddose.

Cod _leak

Poor doordose.- Padlyopens.

4) Bad radiation. T Pr_,ha'nbienttemperature.

L Spaceissecluded.

5) Refrigerant leak.

6) Inadequate of refdgerant.

7) Weak compressor discharging power. _ Dilfemntra_rlg.

Srnalc_padty

8) Fan does not work.

9) Button is positioned at "strong."

lee in freeezer compartment.

-External air irfflow.-- Rubber motor assembly direc_on(mverse).

-Do.opens r- w_.._n_e_

-Gaparaundgasket-- C,onlra_, dis_of_on,loose,doortwisted,cornernct

f_y inserted.

Food_, -- St0d_h_ f_d. -- Unsea}edfood.

2) Condensation in the refrigerator compartment.

FI:_ opens F Im,.,_entdo,_,

_ Foodhindemdo__b_ing.

butn_ doses. I_'sag.

Gasketgap.

3) Condensation on liner foam.

Co_ air leak [- Notfullytilk_d._- T_p tablepart

and _ansrritted. l_ OutplatePaLparC

_Gask_gap.

• Inspect pad_ measuremerf_s

and check visually.

- 60 -

TROUBLE DIAGNOSIS

CLAIMS.

6. Dew and

ice formation.

7. Sounds

CAUSES AND CHECK POINTS. HOW TO CHECK

4) Dew on door.

_-- Dew on the duct door. - Duct door heater is cut.

-- Dew on the dispanse FRecessHeaterisojt

recess. LDuctdoods operl./Fore_g__ d_

-- Dew on the door surface. _ Not fully fiUed. T Surface._

LLCormer_ Liquidshl:tal3e'

P/U liquid contraction. _ Liq_l!eek

Dew on the --F Badwingadhesion. [W'_j sagOowerp_t ).

gasket surface. [ LDOerliner_ m_=mat_.

_-Comer.-- r- Toomuchr'mtc_,

]LBroken.

LHomeBar heateriscut.

5) Water on the floor.

-- Dew in the refrigerator compartment.

-- Defrosted water overflows. -- Clogged discharging hose.

-- Discharging hose -- Evaporation tray located at wrong place.

location.

-- Tray drip. _- Damaged.

I_ Breaks. holes.

L Small Capacity.

-- Position of drain.

) Compressor compartment operating sounds.

-- Compressor sound _- Sound from machine itself.

L Sound from vibration.

- Restrainer.

- Rubber]-- Tea hard.

seat. _ Distorted.

_- Aged.

_- Bumt.

Stopper.--Bad StopparTNot fit

assembly. _(inner

| diameter

of stopper).

_Tilted.

LNot inserted.

-- Compressor base not connected.

Bad welding compressor stand(fallen).

Foreign materials in the compressor

compartment.

--O.L.R sound. ----Chattering sound.

-- Capacitor noise. -- Insulation paper vibration.

-- Pipe sound. _ Pipe contacts each other. - Narrow interval.

No vibration damper. • Damping rubber-Q.

L Damping rubber-S,

-- Capillary tube unattached.

- 61 -

TROUBLE DIAGNOSIS

CLAIMS.

7. Sounds

CAUSES AND CHECK POINTS.

) Compressor compartment operating sounds.

Transformer sou nd. --_ Itsmvnfault.-- Coregap.

_Badcon_. -- _ screwconnection.

-- Drip tray vibration sound._ _ a_-=mbly.

i-E

-- Back cover machine sound, _ Badconnec_n.

LPal_,da_,aged.

-- Condenser drain sound. _ Notconnected.

L _d pipec_ng.

2) Freezer compartment sounds.

-- Fan motor sound. _- Nom'elopera_ngs_d.

V_Jonso_d.-- F- Agedrubberseat

L L_d _orqueforasserrb!ingrno_

brad<_

-- Sounds from fan - -Fangddeconta_

contact. _- Shroudburrconlact.

LNa_r_ _'atar ir_,,'aL

-- Unbalance fan sounds_ -- Unb_ar:ce.-]- Surfacemad-_ni'_jconditJcns,

i- Fan_tor_.

Ioeon_lef_, --/_r inl_e(_te torno_

-- Motor shaft _ Supporlerdisoded,

contact sounds. L Tiltedduringrnotorassem_

_-- Resonance.

Evaporator noise. _ Evaporatorpipecontact.-- Nod_ eva_

So,rodfromfinevapora_ and p_e dudnge,'q0ansion

and comac_n.

3) Bowls and bottles make contact on top shelf.

4) Refrigeratorroof contact.

5) Refrigerator side contact.

6) Insufficient Lubricants on door hinge.

HOW TO CHECK

- 62 -

TROUBLE DIAGNOSIS

CLAIMS.

8. Faulty lamp

(freezer and

refrigerator

compartment)

9. Faulty internal

voltage(short).

CAUSES AND CHECK POINTS.

1) Lamp problem. _-- Filament blows out.

L__ Glass is broken.

2) Bad lamp assembly. _Not inserted.

L---- Loosened by vibration,

3) Bad lamp socket.

-- Disconnection._ Bad soldering.

Bad rivet contact.

--Short. Water penetration:-- Low water

level in tray,

IBad elasticity of contact.

-- Bad contact(corrosion).

4) Door switch.-- -- Its own defect.

-- Refrigerator and freezer switch is reversed.

-- Travlel distance.

-- Bad connection.

-- Bad terminal contact.

-- P/U tlquid leak..

1) Lead wire is damaged.

- Wire damage when assembling P.T.C. Cover.

- Outlet burr in the bottom plate.

- Pressed by cord heater, lead wire, evaporator pipe.

2) Exposed terminal.

Compressor Compartment terminal - Touching other

components.

Freezer compartment terminal. - Touching evaporator pipe.

3) Faulty parts.

-- Transformer. _Coil contacts cover.

L__ Welded terminal parts contact cover.

-- Compressor. -- Bad coil insulation.

-- Plate heater.

-- Melting fuse. --Sealing is broken.- Moisture penetration.

- Cord heater. _-Pipedamaged.--Moisturepenetration.

_- Bad sealing.

i

i _ Sheath heater.

HOW TO CHECK

•Connect conduction and

non-conductionparis and

checkwith tester.

Conduction: NG.

Resistances: OK.

- 63 -

TROUBLE DIAGNOSIS

CLAIMS.

10. Structure.

appearance

and others.

CAUSES AND CHECK POINTS,

1) Door foam.

Sag _

-- Noise during --

operation.

-- Malfunction.

Weakt0mueof _ B_t isIoQsenedd,J,,ing

hingeconne(_n. _nsl:,:_aim.

_ Sony v,_rnout.

Weak gasket -- Acliesion surf_e.

adhesion.

Fked tape. -- Not wel_xed.

H_ge interference._ Biggardoorfoam

VNo_sher.

_ No gm.m_eandnetenough

q_n_y.

N_ dosedletefferer'_cebetweendoerliner_d inner,Ir_

Reffigeret_ T-S_opp_w_nouL

compa_nt k _ E_ _eez_ comet do_

openedwhmf_zer _s_

compartment_ .

dosed(_y stopp_).

2) Odor,

- Temperature of -- High.--_ Faultydampercon_'d+

refrigerator I_ Buttonissetet%_eak".

compartment. _ _ isopen(interferer:c,eby

food).

-Deodorizer._ Node_dz_.

Po_capa_.

-- Food Storage._ Sealc_ldi_on.

_-s_s_o_o_

L--Longterrns_rage,

-- Others. OdorsfromchemicalprooJcts.

HOW TO CHECK

- 64 -

2. Faults

2-1. Power

Problems Causes Checks IMeasures Remarks

No power on •Power cord cut. - Check the voltage with tester• r-Replece the components.

i

outlet, - Faulty connector insertion. - Check visually. -Reconnect the connecting parts.

•Faulty connection between plug - Check visually. - Reconnect the connectJng parts.

and adapter.

Fuse blows out. • Short circuit by wrong connection,

- Low voltage products are

connected to high voltage.

•Short circuit by insects.

-Electricity leakage.

- High voltage,

- Short circuit of components

(tracking doe to moisture and dust

penetration).

- Check the fuse with tester

or visually.

-Check the input volt are with tester

(between power cord and products

-Check the resistance of power core

with testerf (if it is 0_, it is shorted).

-Find and remove the cause of

problem(ex, short, high voltage,

low voltage).

- Replace with rated fuse.

2-2. Compressor

Problems

Compressor - Faulty PTC.

does not

operate.

- Replace with rated

fuse after confirming

its spaclficaUon.

•If fuse blowns out

frequently, reconfirm

the cause and prevent.

Causes Measures RemarksChecks

-Check the resistance.

Vlaue:,,o is defective,

-If resistance is infinite, replace it

with new one.

- If it is not infinite, it is normal•

-Check other parts.

-During forced operation:

- Operates: Check other parts.

- Not operate: Replace the frozen

compressor with new one, weld,

evacuate, and recharge refrigerant,

Refer to weld repair procedures.

-Compressor is frozen, *If compressor assembly parts are

normal(capacitor, PTC, OLP),

apply power directly to the

compressor to force operation.

(_ Auxiliarywinding__

pM_ne:inding_

OLP It starts as soon as it is

contacted.

-I

?.

r-

m

_o

03

2-3. Temperature

Problems Causes Checks Remarks

High

temperature

inthe freezer

compartment.

Poor coolair circulation due to faulty

fan motor.

Faulty fan motor due to faulty door

switch operation.

Bad radiation conditions in

compressor compartment.

-Lock -- Check resistance w_tha

tester.

OQ: short.

_2: cut.

Rotate rotor manua,y and check

rotation.

- Wire is cut.

-Bad terminal contact: Check

terminal visually.

- Fan constraint. - Pan shroud

contact: Confirm

visually.

- Fan icing:

Confirm visually.

-Iced button (faulty) operation:

Press button to check

- Faulty button pressure and contact:

Press button to check operation.

*Door cannot press door switch

button: Check visually.

Check the clearance between the

refrigerator and wall (50 mm in

minimum).

- Check dust on the grill in

compressor compartment.

- Check dust on the coils condenser.

Measures

-Replace fan motor,

Reconnect and reinsert,

- Maintain clearance and remove ice

(Repair and/or replace shroud if fan

is constrained by shroud

deformation).

-Confirm icing causes and repair.

- Replace door switch.

-Door sag: fix door.

-Door liner bent:replace door or

attach sheets.

Keep clearance between

refrigerator and walls (minimum

50mm).

- Remove dust and contaminants

from grill for easy heat radiation.

- Remove the dust with vacuum

cleaner from the coils condenser

while the refrigerator is off.

- The fan may be

broken if cleaning

performs while the

refrigerator is on.

o

rtl

2-4. Cooling ""1

Problems Checks

F

O_

-.j

High

temperature

in the freezer

compartment.

Causes

Refrigerant leak.

Shortage of refrigerant.

Check sequence

1. Check the welded parts of the

drier inlet and outlet and drier

auxiJialy in the Compressor

compartment (high pressure side).

2. Check the end of compressor

sealing pipe (low pressure side).

3. Check silver soldered parts.

(Cu + Fe /Fe + Fe).

4. Check bending area of wira

condenser pipe in compressor

compartment (cracks can

happen during bending).

5. Check other parts (compressor

compartment and evaporators in

freezer compartment).

Check frost formation on the surface

of evaporator in the freezer

compartment.

- If the frost forms evenly on the

surface, it is OK.

- If it does not, it is not good.

Measures

Weld the leaking part, recharge the

refrigerant.

-Find out the leaking area, repair,

evacuate, and recharge the

refrigerant.

-No leaking, remove the remaining

refrigerant, and recharge new

refrigerant.

Remarks

Dder must be replaced,

Dder must be replaced.

i

Co

Problems Checks Measures

High

temperature in

the freezer

compartment.

Causes

Cycle pipe is clogged.

Leak at loop pipe weldjoint

(discharge) in compressor.

Faulty cooling fan in the compressor

compartment.

Check sequence.

1. Check temperature of condenser

manually.

If it is warm, it is OK.

If it is not, compressor discharging

joints might be clogged.

2. Manually check whether hot line

pipe is warm.

If it is warm, it's OK.

If it is not, condenser outlet weld

joints might be colgged,

Check sequence.

1. Manually check whether

condenser is warm, It is not warm

and the frost forms partly on the

evaporator in the freezer

compartment.

Check sequence.

1. Check cooling fan operation.

2. Check that cooling fan is

disconnected from the motor.

- Heat up compressor discharging

weld joints with touch, disconnect

the pipes, and check the clogging.

Remove the causes of clogging,

weld, evacuate, and recharge

the refrigerant.

- If it's warm, it's OK. If it's not.

condenser discharging line weld

joints might be clogged.

Disconnect with torch, remove the

causes, evacuate, and recharge

seal refrigerant.

Replace the compressor,weld,

evacuate, and recharge refrigerant,

-Replace if motor does not operate.

- If fan is disconnected, check fan

damage and reassemble it.

• Refer to fan motor disassembly

and assembly sequence.

Remarks

Direr must be replaced.

Drier must be replaced.

-I

m

_o

(/)

Or)

2-5. Defrostin failure

Problems Causes Checks Measures Remarks

&

(O

No defrosting. Heater does not generate heat as

the heating wire is cut or the circuit

=sshorted.

1) Heating wire is damaged when

inserting into the evaporator,

2) Lead wire of heater is cut.

3) Heating wire at lead wire contacts

is cut.

Sucking duct and discharging hole

are clogged:

1. Impurities.

2. Ice.

Gap between Sucking ductand

Heater plate(Ice inthe gap).

Wrong heater rating (or wrong

assembly).

1. Check the resistance of heater.

0_: Short. _2: Cut,

Tens to thousands _: OK,

2. Check the resistance between

housing terminal and heater

surface.

0Q: Short. _o_: Cut,

Tens to thousands Q: Short.

1. Confirm foreign materials, In case

of ice, insert the copper line

through the hole to check.

2. Put hot water into the drain

(check drains outside),

1. Confirm in the Sucking duct.

1. Check heater label.

2. Confirm the capacity after

substituting the resistance value

into the formula.

== ...__ (V:Rated voltage of user country)

R (R: Resistance oftester[_])

-- Compare P andlavel capacity.

Tolerance: ±7%

Heating wire is short and wire is cut.

• Parts replacement: Refer to parts

explanations.

1) Push out impurities by inserting

copper wire.(Turn off more than

3hours and pour in hot water if

frost is severe.)

2) Put in hot water to melt down frost.

3) Check the water outlet.

4) Push the heater plate to sucking

duct manually and assemble the

disconnected parts.

1) Turn off the power, confirm

impurities and ice in the gap, and

supply hot water until the ice in the

gap melts down.

2) Push the Heater plate to drain

bottom with hand and assemble

the disconnected parts.

Faults:replace.

- How to replace: Refer to main parts,

Seal the lead wire with

insulation tape and heal

! contraction tube if the cut

lead wire is accessible to

repair. F.

_o

o

O

Problems Causes Checks Measures Remarks

No defrosting Melting fuse blows out. - Check melting fuse with tester. - Faullty parts: parts replacement.

1) Lead wire is cut. If 0_2: OK. - Check wire color when maeasuring

2) Bad soldering. If ,_._: wire is cut. resistance with a tester.

Ice in the Sucking duct. 1. Check the inner duct with mirror. 1) Turn power off.

1) Icing by foreign materials in the

duct.

2) Icing by cool air inflow through

the gap of heater plate.

3) Icing by the gap of heater plate.

2) Raise the front side(door side),

support the front side legs, and let

the ice melt naturally. (If power is

on, melt the frost by forced

defrosting.)

Bad cool air inflow and discharge,

and bad defrosting due to faulty

:ontact and insertion (bad connector

insertion into housing of heater,

melting, fuse and motor fan).

2. Check by inserting soft copper

wire into the duct (soft and thin

copper not to impair heating wire).

1. Turn on power, open or close the

door, check that motor fan

operates (If it operates, motor fan

is OK).

2. Disconnect parts in the refdgerato_

compartment, check the connection

around the housing visually,

defrost, and confirm heat generation

on the heater. Do not put hands on

the sheath heater.

3. Check the parts which have faults

described in 1, 2 (mechanical

model: disconnect thermostat

from the assembly).

3) Reassemble the heater plate.

1) Check the faulty connector of

housing and reassemble wrongly

assembled parts.

2) If the parts are very damaged,

remove the parts and replace it

with a new one.

o

ITI

_o

(/)

2-6. Icing

Problems Causes Checks Measures Remarks

i

Icing in the

refrigerator

compartment.

- Damper icing.

- Pipe icing.

- Discharging

pipe icing.

1) Bad circulation of cool air.

- Clogged intake port in the

refhgerator compartment.

- Sealing is not good.

- Too much food is stored and clogs

the discharge port.

-Bad defrosting.

2) Faulty door or refrigerator

compartment.

- Faulty gasket.

- Faulty assembly.

3) Overcooling in the refrigerator

compartment.

- Faulty damper in the refrigerator

compartment.

- Faulty MICOM (faulty sensor)

4) Bad defrosting

- Heater wire is cut.

- Defective defrost sensor.

- Defrosing cycle.

5) Customers are not familiar with

this machine.

- Door opens.

- High temperature, high moisture,

and high load.

- Check the food is stored properly

(check discharge and intake port

are clogged).

- Check icing on the surface of

baffle and cool air path (pipe) after

dissembling the container box.

- Check icing st intake ports of

freezer and refrigerator

compartment.

- Check gasket attached conditions.

- Check door assembly conditions.

-Check refrigerator compartment

is overcooled (when button

pressed on "weak").

- Check parts are faulty.

- Check frost on the evaporator

after dissembling shroud and fan

grille.

- Check ice on intake port of freezer

and refrigerator compartment.

- Check food interferes with door

closing.

- Check ice on the ceilings.

-Be acquainted with how to use.

- Sealing on connecting parts.

- Check the damper and replace

it if it has defects.

- Check defrost. (After forced

defrosting, check ice in the

evaporator and pipes.)

Correct the gasket attachment

conditions and replace it.

- Door assembly and replacement.

-Replace faulty parts.

- Check parts related to defrosting.

-Check defrosting. (Check ice on the

evaporator and pipe.)

- Be acquainted with how to use.

- Check the defrost

related parts if problem

is causedby faulty

defrosting.

-Replacement should

be done when it

cannot be repaired.

- Moisture cannot frost

on the evaporator but

can be sucked into the

refrigerator, being

condensed and iced,

interferes with cool air

circulation, and

suppresses sublimation.

rtl

o0

i

-.j

Problems

Ice in the freezer

compartment.

- Surface of fan

grille.

- Wall of freezer

compartment.

- Cool air

discharging port.

+ Basket(rack)

area,

- Food surface.

- Icing in the

shute.

Causes

1) Bad cooling air circulation,

-Intake port is colgged in the freezer i

compartment.

- Discharging port is Clogged.

- Too much food is stored,

-Bad defro_ing.

2) Bad freezer compartment door

• Faulty gasket

•Faulty assembly

3) Over freezing in the freezer

comparfment.

- FauI_MICOM.

4) Bad defrosting.

- Heater wire is cut.

- Faulty defrost sensor,

- Defrosting cycle

5) User is not familiar with how to

use,

-Door opens,

-High moisture food(water) is stored.

Checks

Check food storage conditions

visually.(Check clogging at intake

and discharging port of cooling air.',

- Check food occupation ratio in

volume(Less than 75%),

- Check frost on the evaporator after

dissembling shroud and fan grille.

- Check icing at intake port of

refrigerator compartment.

* Check gasket attachment

conditions.

- Check door assembly conditions.

-Refrigerator operates pull down.

(Check if it is operated

intermittently)

- The Temperature of freezer

compartment is satisfactory, but

over freezing happens in the

refrigerator compartment even

though the notch is set at "weak".

-Check frost on the evaporator after

dissembling shroud and grille.

- Check ice on the intake port in the

refrigerator compartment.

- Check food holdsdoor open.

- Check iceon the ice tray,

Measures

-Be acquainted with how to use,

- Check defrost (Check ice on the

evaporator and pipes after forced

defrosting).

- Correct the gasket attachement

conditions and replace it.

-Door assembly and replacement.

-Replace defective parts.

-Check parts related to defrosting.

- Check defrosting.(Check ice on the

evaporator and pipes after forced

defrosting.)

-Be acquainted with how to use.

Remarks

- Check the parts related

to defrosting if the

problem is caused by

the faulty defrosting.

-Replace when it can not

be repaired.

.-I

F.

_o

u)_

(/)

2-7. Sound

Problems

"Whizz." sound

Causes

1. Loud sound of compressor

operation.

2. Pipes resonat sound which is

connected to the compressor.

3. Fan operation sound in the freezer

compartment.

4. Fan operation sound in the

compressor compartment,

Checks Measures Remarks

1,1 Check the level of the

refrigerator.

1.2 Check the rubber seat

conditions (sagging and aging).

2,1 Check the level of pipes

connected to the compressor

and their interference.

2,2 Check rubber inserting

conditions in pipes.

2.3 Touch pipes with hands or screw

-driver (check the change of

sound).

3.1 Check fan insertion depth and

blade damage.

3.2 Check the interference with

slructures.

3.3 Check fan motor.

3.4 Check fan motor rubber insertion

and aging conditions.

4.1 Same as fan confirmation in the

refrigerator.

4.2 Check drip tray leg insertion.

4.3 Check the screw fastening

conditions at condenser and

drip tray.

1) Maintain horizontal level.

2) Replace rubber and seat if they

are sagged and aged.

3) Insert rubber where hand contact

reduces noise in the pipe.

4) Avoid pipe interference.

5) Replace defective fan and fan

motor.

6) Adjust fan to be in the center of

belt mouth of the fan guide.

7) Leve a clearance between

interfering parts and seal gaps in

the structures.

8) Reassemble the parts which make

sound.

9) Leave a clearance if evaporator

pipes and suction pipe touch

freezer shroud,

o

m

_o

i

Problems

Vibration sound.

("Cluck")

Irregular sound.

("Click").

Causes Checks Measures Remarks

1-1. Remove and replace the

shelves in the refrigerator

1-2. Check tight food and container

on the shelves.

2-1. Touch pipes in the compressore

compartment with hands.

2-2 Check capillary tube touches

cover back.

' 3-1 Check compressor stopper

vibration,

4-1 Check vibration of front and rear

moving wheels.

5-1 Touch other structures and parts.

1. Vibration of shelves and foods in

the refrigerator.

2. Pipes interference and capillary

tube touching in the compressor.

compartment.

3. Compressor stopper vibration.

4. Moving wheel vibration.

5. Other structure and parts

vibration.

1. It is caused by heat expansion

and contraction of evaporator,

shelves, and pipes in the

refrigerator.

1-1 Check time and place of sound

sources.

1) Reassemble the vibrating parts

and insect foam or cushion where

vibration is severe.

2) Leave a clearance where parts

interfere with each other.

3) Reduce vibration with rubber

and restrainer ff it is severe.

(especially, compressor and pipe).

4) Replace compressor stopper if it

vibrates severely.

1) Explain the principles of refrigeratior

and that the temperature difference

between operation and defrosting

can make sounds.

2) If evaporator pipe contacts with other

structures, leave a clearance between

them (freezer shroud or inner case).

-I

Fn

_o

U)

i

".4

Problems Checks Measures Remarks

Sound "Burping"

(almost the same

as animals crying

sound).

Waterboilingor

flowingsound,

Sound of whisl]e

when door

closes.

Causes

It happens when refrigerant expands

at the end of capillarytube.

It happens when refrigerant passes

orifice in accumulator internal pipes by

the pressure difference between

condenser and evaporator.

When door closes, the internal pressure

of the refrigerator decreases sharply

below atomesphera and sucks air into

the refrigerator, making the whistle

sound.

- Check the sound of refrigerant at the

initial installation.

- Check the sound when the refrigerator

starts operation after forced defrosting.

- Checkthe restrainer attachment

conditions on the evaporator and

capillary tube weld joints.

- Check the sound when compressor is

turned on.

- Check the sound when compressor is

turned off.

- Checkthesoundbyopeningand

closingthe refrigeratororfreezerdoors,

- Check the restrainer attached on the

evaporator and capillary tube weld

joints and attach another restrainer.

- If it is continuous and servere, insert

capillarytube again (depth:lS±3mm)

- Fasten the capillary tube to suction

pipes or detach in the compressor

compartment,

- Explain the principles of freezing

cycles,

- Explain the principles of freezing cycles

and refrigerant flowing phenomenon by

internal pressure difference.

- If sound is servers, wrap the

accumulator with foam and restrainer.

- Broaden the cap of discharge hose for

defrosting in the compressor

compartment.

- Seal the gap with sealant between out

and inner cases of hinge in door.

,-I

Ill

_o

t,/}

2-8. Odor ,_

Problems Checks Measures Remarks

i

O3

Food Odor.

Plastic Odor.

Odorfrom the

deododzer.

Causes

Food (garlic, kimchi, eto) J- Check the food is not wrapped.

-Check the shelves or inner

wall are stained with food juice.

- Check the food in the vinyl wraps.

- Chedk food cleanliness.

Odors of mixed food and plastic

3dors.

Ddor from the old deodorizer.

-Check wet food is wrapped with

plastic bowl and bag.

- It happens in the new refrigerator.

- Check the deodorizer odors.

- Dry deododzer in the shiny and

windy place.

- Store the food in the closed

container instead of vinyl wraps.

- Clean the refrigerator and set

button at "strong".

-Clean the refrigerator.

-Persuade customers not to use

plastic bag or wraps with wet food

or odorous foods.

- Dry the deodorizer with dryer and

then in the shiny and windy place.

-Remove and replace the

deodorants.

F.

_o

Or)

Or)

i

2-9. Micom

Problems

Bad PCB

electric power.

Symptom

All display

LCDS are off.

Abnormal

display LCD

operation

Causes

Bad connection

between Main PCB

and display circuit,

Defective PCB trans.

DefectivePCBelectric

circuit parts.

Bad connection

between Main PCB

and display circuit.

Defective LED

module.

Bad connector

connection from main

PCB to display PCB,

PCB Trans winding is

cut.

PCB Trans temperature

fuse is burnt out.

Defective regulator IC

7812, 7805).

PCB electric terminal

fuse is burnt out.

STR Partsare

damaged.

Lead Wire connecting

main PCS and display

PCB is cut or connector

terminal connection is

bad.

Defective LED.

Checks

Visual check on connector

connection.

Check resistance of PCB Trees

input and output terminals wifh

a tester, (If resistance is infinity,

trans winding is cut).

Check voltage at input/output

terminals.

Check fuse in PCB electdc

terminal with a tester.

Check if STR No. 2 and 3 pins

are cut when power is off.

Check Lead Wire terminals

connecting Main PCB and

display PCB with atester.

Check if all LEDs are on when

Main PCB Test switch is

pressed (or when both freezer

key and power freezer key are

pressed at the same time for

more than one second.)

Measures

Reconnect

connector.

Replace PCS Trans

or PCB.

Replace regulator.

Replace pCR fuse.

JReplace parts.

Reconnect Lead

Wire and directly

connect defective

contact terminal to

Lead Wire.

Replace display

PCB.

Remarks

Applicable to

model without

dispenser.

Refer to electric

circuit in circuit

explanation.

Applicable to

model with

dispenser.

Refer to display

circuit in circuit

explanation.

o

m

_o

i

Go

Problems

Bad cooling,

Symptom Causes Chocks Measures Remarks

Freezer

temperature is

high.

Compressor does

not start.

Compressor Lead Wire

is cut.

Defective compressor

driving relay.

Check compressor Lead Wire

with atester.

Measure voltage at PCB CON5

(3&9) after pressing main PCB

test switch once, It is OK if

voltage is normal.

Reconnect Lead

Wire.

Replace relay(RY1

and RY14) or PCB,

Refer to load

ddving circuit in

circuit

explanation.

Defective freezer Defective Freezer Check resistance of freezer Replace freezer Refer to

sensor, sensor parts, sensor with atester, sensor, resistance

charactedstics

table of sensor in

circuit

Freezer sensor is Confirm the color of sensor in Repair main PCB explanation.

substituted for other circuits (main PCB sensor sensor housing

sensor, housing),

Defective freezer fan

motor.

Check fan motor lead wire

with atester,

Measure the voltage between

PCB power blue line and fan

motor after pressing test switch

of Main PCB. If the voltage is

normal, it is OK.

Fan motor lead wire

is cut,

• Defective door switch

(freezer, refrigerator,

home bar).

• Defective fan motor.

• Defective fan motor

driving relay.

Reconnect lead

wire.

Replace door

switch (freezer,

refrigerator and

home bar).

• Replace fan motor.

•Replace relay(RY5

& RY6) or PCB.

Refer to faulty defrost items in trouble diagnosis

functions.

Faulty defrost.

Refer to load

ddving circuits in

circuit

explanation,

Refer to trouble

diagnosis

function.

F.

_o

0o

f

(D

Problems

Bad cooling

Symptom Causes Checks Remarks

Wrong

Refrigerator

temperature.

Defective AC Damper.

Defective refrigerator

sensor

Check AC damper

motor and reed swffch

and lead wire are cut.

Check AC damper

part.

Check if AC damper motor and

reed switch lead wire are

cut with a tester.

Refer to AC damper in parts

repair guide.

Measures

Reconnect lead

wire.

Replace AC damper

or refrigerator control

box Assy.

Check AC damper Refer to AC damper in parts Replace relay or Refer to single

Motor driving relay in repair guide. PCB. motor damper

PCB. ddving circuits

in circuit

explanation.

Foreign materials in AC Check AC damper baffle

damper baffles visually.

Ice formation on AC Check if AC damper Heater

damper baffles wire is cut with atester.

Defective refrigerator

sensor parts.

Check the resistance of

refrigerator sensor with a tester.

Check the sensor color inthe

circuit. (main PCB sensor

housing.)

Check if refrigerator sensor

is not fixed at cover sensor but

Inner case visually,

Refrigerator sensor is

substituted for other

sensor,

Defective refrigerator

sensor assembly

condition.

Remove foreign

materials,

Replace AC damper

or refrigerator contr(

Box Assy.

Replace refrigerator

sensor.

Repair main PCB

sensor housing.

Fix again the

refrigerator sensor.

Refer to sensor

resistance

characteristic

table in circuit

explanation.

o

m

o>

(/)

O

Problems Symptom Causes Checks Measures Remarks

Bad defrost. Defrost is not Defrost lead wire is cut. Check if defrost lead wire is cut with a Reconnect Lead

working, tester. Wire.

Defective defrost driving relay. Check the voltage of CON5 (1 and 7) Replace relay (RY 7 Refer to load

with a tester after pressing main and RY 14) or PCB. ddving conditions

PCB test switch twice, check in circuit

If the voltage is normal then it is OK, explanation.

Defective defrost sensor parts. Check the resistance of defrost sensor Replace defrost Refer to sensor

with a tester, sensor, resistance

charactedstic

table of circuit

explanation.

Defective Buzzer Defective connecting lead wire from Check lead wire related to door Repair lead wire.

buzzer continuously main PCB to door switch, switch with a tester.

dngs or door Defective door switch parts. Refer to door switch in parts repair Replace door switch.

opening alarm guide.

does not work.

Defective Check input wire with a tester.

display button

Buzzer does

not ring and

key does not

sense even

button is

)ressed.

Key input wire is cut or bad connector

terminal contact in main PCB and

display PCB connecting lead wire,

Key is continuously depressed due to

structural interference,

Disassemble frame display and confirm

visually.

Reconnect lead

wire and replace or

directly connect bad

contact terminal to

lead wire,

Adjust or replace

interfering

structures.

Refer to display

circuit in circuit

explanation.

I-"

m

_o

;o

Problems Symptom Causes Checks Measures Remarks

Defective Buzzer rings Trouble mode indication, Check trouble diagnosis function. Repair troubles Refer to mode

display button, but key does indication in

not sense even function

button is explanations,

pressed.

Bad watedice Repair lead wire. Check model

dispenser, with dispenser,

Buzzer

continuously

rings or door

opening alarm

does not work.

ice and water

are not

dispensed.

Defective connecting lead wire from

main PCB to door switch.

Defective freezer compartment door

switch parts.

Defective connectinglead wire from

Main PCB to lever switch.

Defectivelever switchparts

Detective photocoupler[C parts.

Defective relay associated with ice

dispense (geared motor, cube and

dispenser solenoid).

Defective parts associated with ice

dispense (geared motor, cube and

dispenser solenoid).

Defective relay associated with water

dispense.

Defective parts associated with water

dispenser.

Check lead wire associated with door

switch.

Refer to door switch in parts repair

guide.

Check Lead Wire associated with lever

switch with a tester.

Refer to door switch in parts repair guide

Check voltage change at photo coupler

output terminals with lever switch

pressed. It is OK if voltage change is

between 0V - 5V.

Check relay (RYg, RY11, RYt2)

with a tester.

Check resistance of parts with a tester.

Check relay(RY10) with a tester

Check resistance of partswith a tester.

Replace Freezer

compartment door

switch.

Repair lead wire.

Replace lever switch

Replace photo

coupler IC or PCB.

Replace defective

relay,

Replace defective

)arts.

Replace defective

relay.

Replace defective

)arts.

ITI

_o

o

TROUBLE DIAGNOSIS

4. HOW TO DEAL WITH CLAIMS

4-1. Sound

Problems Checks and Measures

"Whizz" sounds

"Click" sounds

"Clunk" sound

Vibration sound

•Explain general principles of sounds.

•A/I refrigerator when functioning prepedy have normal operating sound. The

compressor and fan produce sounds.

There is a fan in the freezer compartment which blows coo] air to freezer and

refrigerator compartments. "Whizz" sounds are heard when the air passes

through the narrow holes into the freezer and refrigerator compartments.

•Cooling Fan sound in the compressor compartment.

•There is a fan on the back of the refrigerator, which cools the compressor

compartment. If there is a small space between the refrigerator and the wall, the

air circulation sounds may be noticeable.

•Noise of Compressor.

•This operating sound happens when the compressor compresses the

refrigerate. The compressor rotates at 3600RPM. The sound of compressor

operation becomes louder as the refrigerator capacity increases.

•Explain the principles of temperature change.

• The sounds happens when pipes and internal evaporator in the refrigerator

compartment expand and contract as the temperature changes during the

refrigerator operation. This sound also happens during defrosting, twice a day,

when the ice on the evaporator melts.

•Explain that it comes from the compressor when the refrigerator starts,

•When the refrigerator operates, the piston and motor in the compressor rotate

at 3600RPM. This sound is caused by the vibration of motor and piston when

they start and finish their operation. This phenomena can be compared with tha

of cars. When the car engine ignites and starts to rotate, the loud sound

becomes gradually quiet. When the engine stops, it stops with vibration.

• Check the sound whether it comes from the pipes vibration and friction.

• Insert rubber or leave a space between pipes to avoid the noise.

•Fix the fan blade ifthe noise is due to the collision of fan and shroud.

•Fix the drip tray if it is loosened.

•Sound depends on the installation location.

•Sound becomes louder if the refdgerator is installed on a wooden floor or near

wooden wall. Move itto the another location,

• If the refrigerator is not leveled properly, asmall vibration can make a loud

sound. Please adjust the level of the refdgerston

-89 -

TROUBLE DIAGNOSIS

Problems

Sounds of water flowing

"Click"sounds

Noise of ice maker operation

(applicable to model with ice maker

- Noise produced by ice dropping

and hitting ice bank,

-Noise from motor sounds "Whizz".

Noise when supplying water.

Noise wben supplying ice.

Checks and Measures

• Explain the flow of refrigerant.

•When the refrigerator stops, the water flowing sound happens.

This sound happens when the liquid or vapor refrigerant flows from the

evaporator to compressor.

•Explain the characteriistics of moving pads.

•This noise comes from the MICOM controller's sw_tch on the top of the

refrigerator when it is turned on and Off.

•Explain the procedure and principles of ice maker operation.

•Automatic ice maker repeats the cycle of water supplying _-_icemaking -, ice

ejection. When water is supplied, the water supply valve in the machine room

makes sounds like "Whizz" and water flowing also makes sound. When water

freezes to ice, freezing sounds such as "click, click" are heard. When ice is

being ejected, sounds like "Whizz" produced by a motor to rotate an ice tray

and ice dropping and hitting ice bank sounds are also heard.

•Explain the principles of water supplied to dispenser.

•When the water supply button in the dispenser is pressed, the water supply

valve in the compressor compartment opens and let the water flow to the water

tank in the lower part of the refrigerator compartment. The water is dispensed

by this pressure. When this happens, motor sound end water flowing sound are

heard.

•Explain the principles of ice supply and procedure of crushed ice making in a

dispenser.

• When ice cube button is pressed, ice stored in the ice bank is moved by a Helix

Pusher and dispensed. If crushed ice button is pressed, the cube ice is

crushed. When this happens, ice crushing and hitting ice bank sounds are

heard,

- 90 -

TROUBLE DIAGNOSIS

4-2, Measures for Symptoms on Temperature

Problems Checks and Measures

Refrigeration is weak.

The food in the chilled drawer is.

not frozen but defrosted

Refrigerator wa[er is not cool.

Ice cream softens.

Refrigeration is too strong.

Vegetables are frozen.

The food stored at inside of

the shelf freezes even the

control button is set at "MID".

•Check temperature set in the temperature control knob.

• Refrigerator is generally delivered with the button set at "normal use" (MID).

But customer can adjust the temperature set depending on their habit and taste.

If you feel the refrigeration is weak, then set the temperature control button at

=strong" position. If you adjust the button in the freezer compartment as well,

the refrigeration is stronger than adjusting refrigerator only.

•The chilled drawer does not freeze food,

•Use chilled drawer for storing fresh meat or fish for short periods, For storing for

a long periods or freezing food, use a freezer compartment. It is normal that

fl'ozen foods thaw above the freezing temperature (in the chilled drawer).

•Check the water storage location.

•If water is kept inthe door rack, please ask to keep it in the refrigerator

compartment shelf, It will then become cooler.

•Explain the characteristics of ice cream.

•The freezing point of ice cream is below -15°C. Therefore ice cream may melt if

it is stored in the door rack.

•Store ice cream in a cold place or set the temperature control button of a freezer

at "strong" position.

•Check the position of temperature control button.

•Check if refrigeration is strong in whole area of the refrigerator or partly near the

outlet of the cooling air. If it is strong in whole area, set the control button at

"weak". If it is strong only near the outlet of cool air, keep food (particularly wet

and easy to frozen such as bean curd and vegetables) away from the outlet.

•Check the vegetables storage.

•If vegetables are stored in the refrigerator shelf or chilled drawer instead of

vegetable drawer, they will be frozen. Set the control button at =weak" if they are

also frozen in the vegetable drawer.

•Check if food is stored near the outlet of the cooling air.

•The temperature at cooling air outlet is always below the freezing point.

Do not store food near the outlet of the cooling air as it block the air circulation,

And do not block the outlet. If the outlet of the cooling air is blocked, the

refrigerator compartment will not be cooled.

-91 -

TROUBLE DIAGNOSIS

4-3. Odor and Frost

Checks and Measures

Problems

Odor intherefrigeratorcompartment.

Frost in the freezer compartment

Frost in ice hay.

• Explain the basic principles of food odor.

• Each food has its own peculiar odor. Therefore it is impossible to prevent or

avoid food odor completely when food is stored in the completely sealed

refrigerator compartment, Deodorizer can absorb some portions of the odor but

not completely. The intensity of odor depends on refrigerator conditions and

environments.

•Check the temperature control button and set at "strong".

•Clean inside of the refrigerator with detergent and remove moisture. Dry inside

the refrigerator by opening the door for about 3 or 4 hours and then set the

temperature control button at "strong'.

•Explain the basic principles of frost formation.

• The main causes for fmstthg:

-Door was left open.

-Air penetration through the gasket

-Too frequent door opening. (parties. etc.)

- Hot foods are stored before they are cooled down. Tee temperature of freezer

is -19°C. if temperature is set at =MID". If hot air comes into the refrigerator,

fine frost forms as cold air mixes with hot air. If this happens quite often, much

frost forms inside of the mfrigerater. If the door is left open in Summer, ice ma

form inside of the refrigerator.

•Explain basic principles of frost formation.

•When ice tray with full of water is put into a freezer compartment, the water

evaporates. If cool air fan operates, the moisture attached to the jaw (protruded

part) of ice mold shall freeze and form frost. If warm water was put into the ice

mold, the situation will become worse.

-92 -

TROUBLE DIAGNOSIS

4-4. Others

Problems Checks and Measures

The refrigerator case is hot. •Explaln the principles of radiator.

• The radiator pipes are installed in the refrigerator case and partition plate

between the refrigerator and the freezer compartment in order to prevent

condensation formation. Particularly in summer or after installation of

refrigerator, it may feel hot but it is normal If there is no enough space to

dissipate heat, it can be hotter due to lack of heat radiation. Please install a

refrigerator in a well-ventilated place and leave aclearance between refdgeretol

and wall:

Small holes in a door liner •Explain that the hole is for releasing gas.

• A small hole in the door liner is for releasing gas during insulation materials

lining work. With a releasing hole, forming can be easily done.

Electric bills are too much. • Check the use conditions.

• Too frequent door opening and hot food storing cause the compressor to

operate continuously and hence increase the electdc consumption and bills.

Condensation on the inside • Explain how to store foods

wail of the refrigerator • Condensation forms when refrigerator Ls installed at damp area, door is

compartment and the cover of frequently opened, and wet foods are not stored in the air tight container or

properly vegetable drawer, wrapped. Be sure to store wet foods in the air tight container or in the wrap.

When is the power connected?

Door does not open propedy.

• When should the power be connected ?

• You can connect the power right after the installation. But if the refrigerator was

laid flat during transportation for a long pedod of time and the refdgerent and

compressor oils are mixed up, then this will affect badly the performance of a

refrigerator. Be sure to connect the power 2-3 hours after refrigerator is

installed.

•Refrigerator compartment door does not open preperly.

•When the door is open, warm open air comes into the compartment and is

mixed up with cool air. This mixed air shall be compressed and increase the

internal pressure when door is closed. This causes the door sticked closely to

the refrigerator in a moment. (if the refdgeretor is used for a long time, it will

then open smoothly.)

•When the refdgerator compartment door is open and dose. the freezer

compartment door moves up and down.

• When the refrigerator compartment door is open and close, fresh air comes into

the freezer compartment and moves up and down the freezer compartment

door.

• Door opens too easily.

•There is a magnet in the gasket rubber so that it is ok. if door is securely closed

without a gap. It can be open easily if the foods lo the refrigerater or freezer

compartments hold the door open.

•Adoor does not close properly.

• If the rear side of the refrigerator is raised higher than front side, door shall not

be easily closed. Adjust the level of refrigerator with levelling screws.

-93-

DIGITAL PARTS MANUAL

4, W-TUNER

4-1. Function

After receiving and handling the video and audio signals through cables, it transmits the signals to the video input section of

the main controller.

4-2. Outline Diagram and 1/O Structure

4-2.1. Outline Diagram

F',_,t

_888B_

bBf .I _ "

<"Section A" outline diagram based on T_/system>

C_n A

TMsystem NT S C

F0_tQ

VIEW-A

B

PAL-I

3.55 __.

VIEW-B

- 110 -

DIGITAL PARTS MANUAL

4-2-2. I/O Structure

CONNECTOR PIN NO. I/O SYMBOL

1 GND GND

2Output AUDIO-L

P1 3 Output AUDIO-R

4GND GND

1Input SDA

2 Input SCL

3 Input GND

4 Input GPIO13

P2 5 Input GPIO12

6 Input GND

7 Input +12V

8 Input -5V

9 Input GPIO15

10 Input GPIO14

P3 1,2 Output TV OUT

DESC_P_ON

GND

AUDIO LEFT OUTPUT

AUDIO RIGHT OUTPUT

GND

12C-BUS Serial Data

12C Serial Clock

GND

General Purpose I/O 13

General Purpose I/O 12

GND

DC+12V

DC-5V

General Purpose I/O 15

General Purpose I/O 14

TV VIDEO Signal Output

4-3. SPEC of parts

1. Operating Environment

- Operating temperature: -10°C - 60°C

-Operating humidity: 0 - 95% (under 35°C condition)

2, Storage Environment

- Storage temperature: -25°C ~ 85°C

-Storage humidity: 95% (under35°C condition)

-111 -

DIGITAL PARTS MANUAL

5. POWER SUPPLY

5-1, Function

It is thepower supplyingsectionfor driving the main controller and hard disk.

5-2. Outline Diagram and 1/O Structure

5-2-1. Outline Diagram

AC P_WER IN

I I

i _o#_Io_we i

., ®

........

A __,_ _-_

-112-

DIGITAL PARTS MANUAL

5-2-2. I/O Structure

5 BK BK 1

14 BK BK 2

!_ BK BK 5 1C YL RD 2C

16 PR _ 4 9 PR RD 19

1/ BK BO 5 8 GY WIll8

18 BO BO 6 7 BK BK 16

19 BK RD 7 6 RD BK 15

2C RD RD 8 5 BK BK 15

21 RD RD 9 4 RD SB 14

21 BK GY 10 5 BK BK 15

2._ YL YL 11 2 BO _12

2z WH SB 12 1 BO BO 11

VIEW-A VIEW-B

BK : BLACK

BN : BROWN

RD : RED

BO : BRIGHT ORANGE

BL : BLUE

GY :GREY

GN : GREEN

YL : YELLOW

WH : WHITE

PR : PURPLE

SB : SKY BLUE

PK :PINK

RD/WH :RED/WHITE

BL/WH :BLUE/WHITE

GN/YL :GREEN/YELLOW

(1)"Section D" Input voltage SPEC

PINNO

I

2

3

4

5

K) INRJTVOLTAGERAk_E REMARK

INPUT 90-264 NEUTRAL

N.C

INPUT 90~264 LIVE

No

F.G GND

:1:MAKER TYPE : DIOS70B-ABD

Input voltage range : 1.5Kv/lmin, 1 .SKy/see

Insulated resistance : over 10 Mohm

(2) VIEW-B Output Voltage SPEC

PINNO I/O

1 Output

2Output

3

4Output

5

6Output

7

8

9 Output

10 Output

11 Output

12

VOLTAGEOUTPUTVOLTAGERANGECOLOR REMARK

3.3 3.0 ~ 3.6 ORANGE

3.3 3.0 ~3.6 ORANGE

GND BLACK

5 4.85 ~ 5.15 RED

GND BLACK

5 4,85 - 5.15 RED

GND BLACK

GND GRAY P0_R-G00D

5 4.85 ~ 5.15 PURPLE STANDBY

12 10.8 ~13.2 YELLOW

3.3 3.0 - 3.6 ORANGE

13 GND BLACK

14 GND SKY-BLUE

15 GND BLACK

16 GND BLACK

17 GND BLACK

18 -5V 4.75 ~ -5.25 WHITE

19 Output 5 4.85- 5.15 RED

20 Output 5 4.85 ~ 5.15 RED

POV_R_VON

-113-

DIGITAL PARTS MANUAL

6. LCD MONITOR

6-1. Function

After receiving the LCD video output from the main controller, outputs it on the LCD monitor

6-2. Outline Diagram

/

•••••*oQ QP6DbI****

\oh_- /r2!

o ® ? o

I

I

_.m

6-3. SPEC of parts

1. MAKER: LG PHILIPS

2. MAKER TYPE: LM 151X3(B3AP)

3, 15.1 _XGA TFT LCD SPEC

- Pixel Pitch: 0.300mm X 0.300mm

-Color Depth: 8-bit, 16,777,216 colors

- Luminance, White: 260cd/m2

-Power Consumption: 2.1W Logic /9.7W CCFL

Display Operating Mode: TMDS

4. Operating Environment

- Operating temperature: 0°C ~ 50°C

- Operating humidity: 5% ~ 90% (under 40°C condition)

-Storage Environment

- Storage temperature: -20°C ~ 60°C

-114-

DIGITAL PARTS MANUAL

7. LCD INVERTER

7-1. Function

Supplies the driving power for backlight inside the LCD.

7-2. Outline Diagram and l/O Structure

7-2-t. Outline Diagram

q

LABEL Ii_'_JLA_DR

153.0 //_ //-w

142.o / /.,

-. ! /0/

=

_-_ \

<.. se _oo ooQ • •

YEON HO #20015VRIO2A

21¢4,5

7-2-2. IIOStructure

CONNECTOR PINNO.

1

2

3

4

5

CN1 6

7

8

9

t0

CN2 1

CN3 2

I/O

INPUT

NC

GND

GND

INPUT

NC

GND

GND

INPUT

INPUT

OUTPUT

OUTPUT

SYMBOL

CTRL

GND

GND

ON/OFF

GND

GND

Vin

Vin

Lamp H1

Lamp L1

DESCRIPTION

Dim. Adjust

GND

GND

Power System Return (5V:ON, 0V:OFF)

GND

GND

DC 12V±lV

DC 12V±IV

HighVoltage connection to high aideof lamp.

Low Voltage connection to low side of lamp.

- 115 -

DIGITAL PARTS MANUAL

7-3. SPEC of parts

1. Maker: LG Electronics

2. Inverter Type: NMC1507-02

3. Maker Type: 6632Z-1507B

4. Inverter SPEC

- Input Supply Voltage: DC 11~13V

- Input Current: 1.1A

-Input Power: 13.2W

- Output Voltage: 616Vrrns

-Output Current: 9.0mArrns

- Output Power: 12W (2 lamps total)

- Input Signal Voltage: -0.3V ~ 6,0V

5. Operating Environment

-Operating temperature: 0°C - 60°C

- Operating humidity: 10% ~85%

6. Storage Environment

- Storage temperature: -30°C - 80°C

-116-

DIGITAL PARTS MANUAL

8. TOUCH SCREEN

8-1, Function

Transmits the dimensions from the contact to the touch screen to the touch screen controller.

8-2, Outline Diagram

5.2

556

310

ACTF\'E

450±13

AHP #48741D-_

31GNAL

Y

S

×

H

VIEW-C

8-3. SPEC of parts

1, Touch Panel SPEC (15.1")

-Analog Resistive (5-line resistance film type)

-Operating Voltage: DC 5V

-Resolution: 4,096 X 4,096 line

-Activation Force: 57 ~ 113g

- Surface Hardness: 3H

2. Operating Environment

-Operating Temperature: -10"C -50°C

- Operating humidity; 0% ~ 90% (under 35°C condition)

3. Storage Environment

-Storage Temperature:_10°C~ 71°C

-Storage Humidity:240 hoursin 90% (under35°C condition)

-117-

DIGITAL PARTS MANUAL

9. TOUCH CONTROLLER

9-1. Function

After receiving and handling the touchdimensiOnsfrom thetouch screen,transmits to the main controller

9-2, Outline Diagram and I/O Structure

9-2-1. Outline Diagram

FACTDRYJUMPERSETTING

IN- J7,BUT- JO~J6,JS~Jtt

2,5rimPi±ch Angle ±ype

Doub[eLinePinHe_derConn,

53

46

PHILIPS

4--¢4

FIN RERO_B

P3 _P4

I

VIEW-A

I

MOLEX

T

A

\ MOLEX #6373-2

9-2-2. I/O Structure

CONNECTOR PiNNO.

1

2

3

4

5

P2 6

7

8

9

10

1

P4

2

I/O SYMBOL DESCRIPTION

INPUT DCD Data Carder Detect

INPUT DSR Data Sct Ready

INPUT RxD Receive Data

INPUT RTS Ready To Send

INPUT TxD Transmit Data

INPUT CTS Clear To Send

INPUT DTR Data Terminal Ready

N/C N/C N/C

GND GND Ground

PIN REMOVED

INPUT +5V DC +5V

GND GND Ground

-118-

DIGITAL PARTS MANUAL

9-3. Connecting Method of Connector upon Replacement

00[:300

A00000

Z X X

O3 _J O0 LO

7O +

,_ (/_ O r]

<

VIEW-A

9-4. SPEC of parts

1. Operating Voltage: DC +5V + 10%

2. Operating Current: 160mA (Peak 240mA)

-119-

DIGITAL PARTS MANUAL

10. CCD (CHARGE COUPLED DEVICE) CAMERA

10-1. Function

Changes the external video signal received through the lens into an electric signal and transmits to main controller

10-2. Outline Diagram and 1/O Structure

10-2-1. Outline Diagram

32.6

28.1

138

\ 4-_2.2

3.51 125 5.2

CNI

JSf NFH_SB SRS_-TB J

0 IZ ]qC

_1 _ o_r_

n [Zig I I_

_ gl io L_

_LJ o LdS_

O= D cz=sC

ON2

10-2-2. I/O Structure

CONNECTOR PINNO. I/O SYMBOL DESCRIPTION

1 INPUT +12V DC +12V

2GND GND GND

CN 1 3 OUTPUT VIDEO CAMERA VIDEO OUT

4 GND GND CAMERA VIDEO GND

5 OUTPUT MIRROR CAMERA MIRROR

10-3. SPEC of parts

1. CCD Camera Module SPEC

-Operating Voltage: DC 12 ± lV

- Current Consumption: Max. 100mA + 10%

- image Sensor: 1/4 inch 270,000

-Effective Pixel: 512(H) X 492(V)

- Signal System: NTSC

- Horizontal Frequency: 15.734kHz

- Vertical Frequency: 59.94kHz

- SIN Ratio: 48dB rain.

- Video Output: Analog Composite

2. Operating Environment

- Operating temperature:

- 120 -

DIGITAL PARTS MANUAL

13. SPEAKER

13-1. Function

Transfers and outputs the electric signal amplified by the AMP in the sub controller into hearable sounds.

13-2. Outline Diagram and lifo Structure.

AMP#110PLUG

42.5

4-04.4 HOLE

/

AMP#205PLUG

oc

t_,

41.5 ±t5

4 ±o5

13-3. SPEC of parts

- Power Rating: RMS 3W /Peak 5W

- Size: 110 X 42.5mm

- Total weight: 151g

- Impedence: 4ohm ± 0.6ohm

- Resonance Frequency: 180Hz -+36Hz

- SPL: 84dB/W ± 2dB

- Response: F0 ~ 20kHz

-Distortion: 5% Max.

-122 -

EXPLODED VIEW

FREEZER DOOR PART

* 138 -

EXPLODED VIEW

REFRIGERATOR DOOR PART

- 139-

EXPLODED VIEW

FREEZER COMPARTMENT

I•

1

I

I

I

I

i

- 140 -

EXPLODED VIEW

REFRIGERATOR COMPARTMENT

-141 -

EXPLODED VIEW

DISPENSER PART

-142 -

EXPLODED VIEW

ICE & WATER PART

-143 *

EXPLODED VIEW

MACHINE COMPARTMENT

- 144 -

EXPLODED VIEW

SPEAKER & MONITOR PART

?

J

- 145 -

DIGITAL PART COMPONENTS

\

®

0

\

®®

oL

O0 00000

- 146 -

- 147-