RB 195 Acrs
RB 195 Acrs
83:45PM 페이지1 in
REFRIGERATOR
BOTTOM MOUNT FREEZER
BASIC : RB195AC/RB197AC/
RB215AC/RB217AC
MODEL NAME : RB195ACRS RB195ACBP
RB195ACWP RB195ACPN
RB197ACRS RB197ACBP
RB197ACWP RB197ACPN
RB215ACRS RB215ACBP
RB215ACWP RB215ACPN
RB217ACRS RB217ACBP
RB217ACWP RB217ACPN
REFRIGERATOR CONTENTS
1. PRECAUTIONS(SAFETY WARNINGS)
2. PRODUCT SPECIFICATIONS
4. TROUBLESHOOTING
6. PCB DIAGRAM
7. WIRING DIAGRAM
8. SCHEMATIC DIAGRAM
For the latest parts information, Please access to our service web site
(North America : http://service.samsungportal.com)
WARNING
All rights reserved. This service guide may not be reproduced in whole or in
part in any form without written permission from the SAMSUNG ELECTRONICS
Company.
Contents
1. PRECAUTIONS(SAFETY WARNINGS) ·································4
2. PRODUCT SPECIFICATIONS ·····························7
2-1) Introduction of Main Function ···························7
2-2) Specifications ··································8
2-3) Interior Views ··································9
2-4) Model Specification ·······························10
2-5) Model Specification &Specification Chart ······················11
2-6)Dimensions of Refrigerator (Inches) ························14
2-7) Refrigerant Route in Refrigeration cycle ······················15
2-8) Cooling Air Circulation ······························16
4. TROUBLESHOOTING ································30
4-1) Check items before failure diagnosis ························30
4-2) Diagnostic method according to the trouble symptom(Flow Chart) ···········42
1. PRECAUTIONS(SAFETY WARNINGS)
● Due to the risk of electric shock, be sure to unplug the unit before servicing.
● Upon repair, make sure that harnesses are not to be water-penetrated and are bundled tight.
Should not be detached by a certain amount of external force.
● Upon repair, completely remove dust or other foreign substances from housing, harness,
connector, etc.
To prevent fire by tracking, short, etc.
● Check out whether the power cord or the outlet is broken, squeezed, chopped off or heat-
deformed.
Repair or replace the defective power cord/outlet immediately.
Make sure the power cord is not punctuated or stomped down.
● Do not allow consumers to keep food unstable or place bottles in the Freezer Room.
PRECAUTIONS(SAFETY WARNINGS)
Read all instructions before repairing the product and keep to the instructions
in order to prevent danger or property damage.
comRated
pone
nts
Unplug
On repair, remove completely dust or After repair, check the assembled state of Check if there is any trace indicating the
other things of housing parts, harness components. permeation of water.
parts, and check parts. ● It must be in the same assembled state ● If there is that kind of trace, change
● Cleaning may prevent the possible fire by tracking when compared with the state before disassembly. the related components or do the necessary treatment
or short. such as taping using the
insulating tape.
PRECAUTIONS(SAFETY WARNINGS)
Do not allow users to insert the power Do not allow users to disassemble, Do not allow users to bend the power
plugs for many products at the same time. repair or alter. cord with excessive force or do not have
● May cause abnormal generation of heat or fire. ● It may cause fire or abnormal operation the power cord pressed by heavy article.
which leads to injury. ● May cause fire.
Prohibition Do not
disassemble
Do not allow users to store articles on the Do not allow users to install the The Appliance must be properly
product. refrigerator in the wet place or the place grounded.
● Opening or closing the door may cause things to
which water splashes.
● Deterioration of insulation of electric ● If earthing is not done, it will cause
fall down, with may inflict a wound.
parts may cause electric shock or fire. breakdown and electric shock.
Prohibition
Earth
2. PRODUCT SPECIFICATIONS
● A newly developed SAMSUNG bottom mount freezer in 2008 has the following
characteristics.
Moving Tray
●
The Deli Drawer can be moved side to side for
customer improved customer satisfaction.
PRODUCT SPECIFICATIONS
2-2) Specifications
Heat exchanger
NO LOAD PERFORMANCE Heat exchanger
REFRIGERATION SYSTEM
Refrigerant Charge ···························· (R134a)5.64 oz(160g) Freezer
Compressor(MK162D-L1U) ·····················730 Btu/hr(0.124kw)
Compressor oil ···········································Freol α10c
R Capillary tube(Dia, Length) ··· 0.032"",118""(0.82mm,3000mm) Fan
Fan
",118"
F Capillary tube(Dia, Length) ···· 0.032" "(0.82mm,3000mm)
Heat exchanger
Heat exchanger
(Air inlet)
(Air inlet)
INSTALLATION
Clearance must be provided for air circulation
"(50mm)
AT TOP ··················································2"
"(25mm)
AT SIDES ················································1"
AT REAR ················································2""(50mm)
PRODUCT SPECIFICATIONS
Door Bin
Push it up and
Light
slide it out to
disassemble.
Deli drawer
Pull it out to disassemble.
Glass Shelf
Pull it out until its stop
Tilt down and slide it out.
Vegetable Drawer
Fruit Drawers
PRODUCT SPECIFICATIONS
SAMSUNG
ITEM SPEC
RB195, RB197, RB215, RB217
Appearance
10
PRODUCT SPECIFICATIONS
Free Standing Model Swing/No Dispenser Swing/External Water Dispenser Swing /No Dispenser Swing/ External Water Dispenser
Weight Height 216lb (98kg) 216lb (98kg) 225lb (102kg) 225lb (102kg)
(lb) Depth 247lb (112kg) 247lb (112kg) 256lb (116kg) 256lb (116kg)
Compressor Reciprocate
Rated Frequency and Frequency AC 115V/60Hz
Refrigerant R 134a
Foaming Agent C-Pentane
Refrigerant Input Amount 5.64 oz (160g)
Type Refrigerator Indirect Cooling Method Refrigerator
Motor Rated Consumption Power 140W
Electric Heater Rated Consumption Power 340W
COLOR
Cabinet (Both Side) Door Molding
Black All Black Empire Black I Black
Real STS Noble STS Versailles Stainless Creamy STS
White Snow White Snow White Snow White
Platinum STS Noble STS Stainless Platinum Creamy STS
11
PRODUCT SPECIFICATIONS
Items Specification
Model RB19 *,RB21*
Model MK162DLIU-E09
Compressor Starting type AC
Components for Freezer
12
PRODUCT SPECIFICATIONS
Items Specification
Model RB19 *,RB21*
Defrost Heater(FRE) Heated at F Defrost AC 120V, 240W
Defrost Heater(REF) Heated at R Defrost AC115V, 120W
Model 4TM412SFBYY-53
Over Load Relay Temp.ON 275 ± 41°F(135±5°C)
Temp.OFF 141.8 ± 61°F(61±9°C)
Electric Components
13
PRODUCT SPECIFICATIONS
B
32 1/4
A
69 3/4
70
MODEL A B C
RB19* 24 1/4 27 5/8 57 1/2
RB21* 26 1/4 29 5/8 59 1/2
14
PRODUCT SPECIFICATIONS
15
PRODUCT SPECIFICATIONS
16
3-1) PRECAUTION
- Required Tools
IMAGE ITEM USE
17
Hinge Cover
Hinge Cover
1. After removing the screw,
disassemble the Upper Right
Hinge Cover with opening door.
18
Refrigerator
Door
19
20
Freezer
Door
Freezer
2. Separate the Cap.
Door Switch
21
22
23
Evaporator In
2. Unscrew a screw.
Refrigerator
24
25
Door Handle
Freezer
Freezer Light
26
27
28
Motor Fan
29
4. TROUBLESHOOTING
❶
❷
1-1) If any key is pressed once in TEST MODE, "FF" blinks on the display and it indicates the
refrigerator has entered the manual operation. At this moment, buzzer beeps as an alarm.
1-2) If manual function is selected, compressor will run at once without 5 minutes delay in any mode. If
the refrigerator is on the defrost cycle at the moment, defrost will be stopped and manual operation
will begin. (Be careful, if manual operation gets started immediately at the moment of compressor
off, overload could be occurred.)
1-3) If manual operation works, compressor & F-FAN operate continuously for 24 hours and fresh food
compartment will be controlled by the setting temperature.
1-4) When the manual operation runs, setting temperature will be selected automatically as below ;
Freezer compartment -14℉(-25℃), Fresh food compartment 32℉(1℃).
1-5) During manual operation Power Freeze & Power Cool function will not be worked. If a function is
selected, the power function icon of the selected one will be off automatically after 10 seconds.
1-6) Manual operation can be canceled during manual operation by turning on the appliance after
power off(resest) or choosing the following step 4) test cancel mode.
1-7) When the manual operation runs, alarm (0.25 seconds ON/0.75 seconds OFF) will beep
continuously until manual operation is completed and there is no function to make the sound stop.
30
TROUBLESHOOTING
2-1) If any key is pressed one more time during manual operation (Fresh food compartment), "rd"
shows in the display and then manual operation will be canceled at once and fresh food
compartment will be defrosted.
2-2) At this moment, alarm beeps for 3 seconds from the beginning, and then beeps 0.1 sec ON/ 1 sec
OFF during manual defrost (Fresh food compartment) function.
3-1) If any key is pressed one more time during manual defrost (defrost of fresh food compartment,
"rd") "Fd" shows on the display and then fresh food and freezer compartments defrost will operate.
Simultaneous manual defrost of Fresh food and Freezer compartment is on the extension of fresh
food compartment, and when it begins, it operates by comparing the temperature of Freezer
Heater ON, not compare the temperature of fresh food Heater ON separately, That is, in case of
manual defrost of fresh food, it is the Heater On condition and if the simultaneous manual defrost
of fresh food and freezer compartment key before completing deforest, it does not make fresh food
compartment heater OFF by re-comparing the temperature of fresh food compartment EVA.
3-2) At this time, alarm beeps for 3 seconds from the beginning, and then beeps 0.5 sec. ON/ 0.5sec.
OFF during manual defrost function of fresh food and freezer compartment.
31
TROUBLESHOOTING
❶ ❷
① If Power Freeze Key + Power Cool Key are pressed simultaneously for 8 seconds,
the error mode by self-diagnosis will be canceled.
❶ ❷
2-1) If Power Freeze Key + Power Cool Key are pressed simultaneously for 6 seconds during normal
operation, the temperature setting display will operate for 2 seconds (ALL ON/OFF 0.5 sec each).
If Power Freeze Key + Power Cool Key are pressed simultaneously for 8 seconds (including above
2 seconds), self-diagnostic function will be selected.
2-2) At this moment, self-diagnostic function will be returned with buzzer sound 'ding-dong'. If there is
an error, display of error will be operated for 30 seconds and then return to normal condition
whether problem is corrected or not.
(Buzzer sounds 'ding-dong') (Refer to self-diagnosis CHECK LIST).
2-3) Input by button is not acceptable during self-diagnostic function.
32
TROUBLESHOOTING
1 Ice Maker Sensor Error R-1-ⓐ ICE MAKER SENSOR part error.
ⓕ ⓑ
ⓖ
ⓔ ⓒ
ⓓ
33
TROUBLESHOOTING
Freeze Compartment
Display error : In case of separation of After separating MAIN PCB CN72 wire
defrost heater housing, contact error, from PCB, the checked resistance value of
disconnection, short circuit or temperature CN70 Brown ↔ Orange shall be
F-1-ⓖ F-DEF. Error fuse error. 66/240 ohm ± 10%.
Display error : If defrost does not finish (Resistance value is varied by input power)
though the defrost of freeze compartment Check 0 Ohm for heater short, &æOhm for
is heating continuously for more than 70 wire / bimetal Open.
minutes.
34
TROUBLESHOOTING
❶ ❶
① If Power Freeze Key + Power Cool Key are pressed simultaneously for 6 seconds,
All ON/OFF will blink at 0.5 second intervals for 2 seconds.
② If taking the finger off from the keys when above blinking condition and press Fridge Key,
load condition mode will be started.
1) If Power Freeze Key + Power Cool Key are pressed simultaneously for 6 seconds, ALL ON/OFF will
blink at 0.5 second intervals for 2 seconds.
2) At this moment, if taking the finger off from Power Freeze Key + Power Cool Key and pressing Fridge
Key, load condition display mode will be returned with alarm ("Ding-dong").
3) Load condition display mode shows the load that MICOM signal is outputting. But, it means that MICOM
signal is outputting and does not means whether load is operating or not actually. That is, though load
operation is displayed, load could not be operated by actual load error, PCB relay error, or etc. And this
function would be applied at Service (A/S).
4) Load condition display function will maintain for 30 seconds and then normal condition will be returned
automatically.
5) Load condition display is as below.
ⓕ ⓑ
ⓖ
ⓔ ⓒ
ⓓ
35
TROUBLESHOOTING
R-1-ⓒ R-DEF Heater When fresh food compartment defrost heater operates, LED ON.
R-1-ⓓ Start Mode When initial power applied to refrigerator, LED ON.
R-1-ⓔ Overload condition When ambient temperature is more than 93℉(34℃), LED ON.
R-1-ⓕ Low temperature condition When ambient temperature is less than 72℉(22℃), LED ON.
F-1-ⓑ F-FAN High When freezer FAN High operates, applicable LED ON.
F-1-ⓒ F-FAN Low When freezer FAN Low operates, applicable LED ON.
F-1-ⓓ F-DEF Heater When freezer defrost heater operates, LED ON.
R-10-ⓔ C-FAN High When compressor FAN High operates, applicable LED ON.
R-10-ⓕ C-FAN Low When compressor FAN Low operates, applicable LED ON.
36
TROUBLESHOOTING
1) If Power Freeze Key + Freezer Key are pressed simultaneously for 3 seconds during normal operation,
exhibition / display mode will be started with buzzer sound ("Ding-dong").
2) If above Power Freeze Key + Freezer Key are pressed repeatedly, exhibition / display mode will be
canceled.
3) If exhibition / display mode is selected, "OF-OF" blinks on the temperature setting display of the panel
and it indicates the refrigerator has entered the exhibition / display mood.
4) If fresh food and freezer compartments sensors are higher than 149℉(65℃) during exhibition / display
mode, exhibition / display mode will be canceled automatically and cooling operation will be returned.
(There is no buzzer sound when the exhibition/display mode is canceled by the temperature.)
5) Operation contents of exhibition/display mode
-. All function like display, fan motor, etc operate normally, but only compressor does not operates.
-. Defrost is not operated.
-. Display function of initial actual temperature is finished.
-. Exhibition/Display mode will be operated though Power ON after Power OFF under the
exhibition/Display mode condition.
● If Freezer Key + Power Cool Key are pressed simultaneously for 12 seconds during normal operation,
fresh food and freezer compartments temperature display will be changed to option setting mode.
37
TROUBLESHOOTING
Code Reference
Down Value Down
Reference Reference
Code Up Code
Value Value Up
● If the display changes to option setting mode, all displays will be off except freezer and fresh food
compartments temperature display as below. (Fresh food and freezer compartments is explained only
because all options are operated with the same method according to the option table.)
1) For example, if you want to change freezer compartment standard temperature to -4℉(-2℃) by
operating option, do as below. This function is for changing the standard temperature. In -2℉(-19℃) of
current temperature of freezer compartment, if you make the temperature lower to -℉(-2℃) by the
option, the standard temperature would be controlled -6℉(-21℃) Therefore, if you change the setting of
temperature option to -2℉(-19℃) on the panel, the appliance will be operated with -6℉(-21℃). It means
that standard temperature is controlled -4℉(-2℃) less than setting temperature in the display.
Basically, option function has cleared data at shipping process. Therefore, all setting value are
NOTE "0". But, check the quality information manual or specifications, because setting value could be
changed particularly for the purpose of improving quality at mass producing process.
38
TROUBLESHOOTING
2) After changing to the option mode, fresh food compartment "0", freezer compartment "0" will be
displayed. (Basically, fresh food compartment "0", freezer "0" would be set at shipping process, but
setting value could be changed for the purpose of improving quality at mass producing process.)
- If fresh food compartment "0" shows only, temperature reference value of freezer compartment will be
set and current freezer compartment temperature code will be displayed on the freezer temperature
display.
3) If freezer compartment "4" is set as below freezer compartment code after fresh food compartment "0" is
set, standard temperature of freezer compartment will be lower than 28.4℉(-2.0℃).(Refer to the picture
"Changing the freezer compartment temperature")
: If you wait for 20 seconds after completing the setting, MICOM will save the setting value to the
EEPROM and normal display will be returned and the option setting mode will be canceled.
Option setting function exists in the other items. We will skip the explanation of the other
functions by the option because it is associated with refrigerator control function and is not
NOTE needed at SERVICE.
(Please do not set the other options except above SERVICE Manual.)
39
TROUBLESHOOTING
Setting value
Freezer
Temp.
Compartment
Code compensation
0 32℉(0.0℃)
1 31.1℉(-0.5℃)
2 30.2℉(-1.0℃)
3 29.3℉(-1.5℃)
4 28.4℉(-2.0℃)
5 27.5℉(-2.5℃)
6 26.6℉(-3.0℃)
7 25.7℉(-3.5℃)
8 32.9℉(+0.5℃)
9 33.8℉(+1.0℃)
10 34.7℉(+1.5℃)
11 35.6℉(+2.0℃)
12 36.5℉(+2.5℃)
13 37.4℉(+3.0℃) Code Reference Value
14 38.3℉(+3.5℃)
15
ex) If you want to change the freezer standard
39.2℉(+4.0℃)
temperature to -28.4℉(-2°C)
Setting value
Freezer
Temp.
compartment
Code compensation
0 32℉(0.0℃)
1 31.1℉(-0.5℃)
2 30.2℉(-1.0℃)
3 29.3℉(-1.5℃)
4 28.4℉(-2.0℃)
5 27.5℉(-2.5℃)
6 26.6℉(-3.0℃)
7 25.7℉(-3.5℃)
8 32.9℉(+0.5℃)
9 33.8℉(+1.0℃)
10 34.7℉(+1.5℃)
11 35.6℉(+2.0℃)
12 36.5℉(+2.5℃)
13 37.4℉(+3.0℃) Code Reference Value
14 38.3℉(+3.5℃)
ex) If you want to change the freezer compartment
15 39.2℉(+4.0℃)
standard temperature to 35.6℉(2°C).
40
TROUBLESHOOTING
● Below options are applied to the applicable model with ice maker only.
Do not set below options to the model without ice maker.
3) Change the waiting time for sweeping ice 4) Change the sweeping sensor temperature
in the ice maker. Set the waiting time of of ice maker. It is the standard
sweeping which discharges the ice from temperature of sensor for judging to check
ice maker. the ice in the ice maker freeze completely.
Waiting time for sweeping of Regulate the temperature for
Setting ITEM Setting ITEM
ICE MAKER sweeping of ICE MAKER
ex) When changing the waiting time for ex) When changing the sensor temperature
sweeping to 60 mins. to 6.8℉(-14℃).
41
TROUBLESHOOTING
42
TROUBLESHOOTING
Start
Is Main PCB NO
DATA1. Connector CN90 inserted
Temperature table correctly?
☞ Checking method of Ice Maker Sensor resistance ☞ Checking method of Ice Maker Sensor voltage - Measure the
CN90 #3(White ) ↔ #4(White) voltage of Sensor Check Point #6(IC10 MICOM #51) on PCB or
- Compare with the temperature table after CN90-#4(White) ↔ REG1, Heat Sink. Common PCB
measuring. -. Compare with the temperature table after measuring. Below is
Ground of REG1 Heat-Sink
the Measuring voltage of CN90-#4(White)↔ REG1, Heat Sink.
43
TROUBLESHOOTING
Start
Is Main PCB NO
DATA1. Connector CN30 inserted
Temperature Table correctly?
44
TROUBLESHOOTING
Start
☞ Checking method of R DEF Sensor resistance ☞ Check method of R DEF Sensor voltage
CN30-#4(Orange) ↔ #8(Gray) -. Measure the voltage of Sensor Check Point #2(IC10 MICOM
-. Compare with temperature table after measuring. #54) on PCB or CN30-#4(Orange) ↔ REG1, Heat Sink.
-. Compare with temperature table after measuring. Common PCB
Below is the measuring voltage of CN30-"4"(Orange) ↔ REG1, Heat Sink Ground of REG1 Heat Sink
45
TROUBLESHOOTING
Start
☞ Checking method of Ambient Sensor resistance ☞ Checking method of Ambient Sensor voltage
CN31-#1(White) ↔ #3(White) -. Measure the voltage of Sensor Check Point #5(IC10 MICOM
-. Compare with the temperature table after #59) on PCB or CN31-"1"(White) ↔ REG1, Heat Sink.
measuring. -. Compare with the temperature table after measuring. Common PCB
Below is the measuring voltage of CN31- #"1(White) ↔ REG1, Heat Sink Ground of REG1 Heater Sink
46
TROUBLESHOOTING
Start
47
TROUBLESHOOTING
Start
☞ Checking method of F DEF Sensor resistance ☞ Checking method of F DEF Sensor voltage
CN30-#6(Pink) ↔ #8(Gray) -. Measure the voltage of Sensor Check Point #4(IC10 MICOM
-. Compare with the temperature table after #58) on PCB or CN30-"6"(Pink) ↔ REG1, Heat Sink.
measuring. -. Compare with the temperature table after measuring. Common PCB
Below is the measuring voltage of CN30-"6"(Pink) ↔REG1, Heat Sink Ground of REG1 Heater Sink
48
TROUBLESHOOTING
Start
Execute manual
operation
Is the voltage between Main Is the voltage between Main Is the voltage between Main
PCB REG1 Heater Sink and CN76 - PCB REG1 Heater Sink and CN76 PCB REG1 Heater Sink and CN76
#4(Orange) around DC7~12V? -#6(Brown) around DC7~12V? -#5(Red) around DC7~12V?
FAN works normally
Is the external temperature Is the voltage between Main Is the voltage between
PCB REG1 Heater Sink and CN30- Main PCB REG1 Heater Sink and
above 66.2℉(19℃)? #1 (Black) around 0V? CN30-#2 (Brown) around 0V?
Repair the connection
of Door S/W
Does DC7~12V alternate with below Does DC7~12V alternate with below Does DC7~12V alternate with below
DC 2V between Main PCB REG1 Heater DC2V between Main PCB REG1 Heater DC2V between Main PCB REG1 Heater
Sink and CN76-#4 (Orange)? Sink and CN76-#5(Red)? Sink and CN76-#5(Red)?
Replace or repair Main PCB
☞ Display for checking the self-diagnostic function ☞ Checking method of R,F,C FAN Motor The voltage of PCB Common PCB
Ground of REG1 Heater Sink
R FAN ERROR common Ground REG1 Heater Sink and
F FAN ; CN76-#5(Red) shall be less than DC 7~12V.
R FAN ; CN76-#6(Brown) shall be less than DC 7~12V.
C FAN ; CN76-"4"(Orange) shall be less than DC 7~12V.
-. Recheck if resistance values are different after measuring.
F FAN ERROR
1) F-FAN 2) R-FAN 3) C-FAN
C FAN ERROR
49
TROUBLESHOOTING
☞ Checking Method of Ice Maker Voltage PCB common Ground REG1 Heater Sink and
2) IC10 MICOM #44 voltage ; Ready(5V) → Rotation(0V) → Half Rotation(5V) → Return(0V) → Ready(5V)
* MICOM #44 voltage is same as Connector CN90-7(Purple).
50
TROUBLESHOOTING
Manual defrost of Fridge and If Power Freeze Key + Fridge Key are pressed
Freezer operate simultaneously. simultaneously for 8 seconds and then select any key, 3rd
Test Mode(Manual defrost) will be operated.
Is power applied to
each defrost heaters?
51
TROUBLESHOOTING
Caution
At the power of main PCB, AC input power
and a high voltage over DC170V(325V)are - Refer to function and 'reference'
occurred. Please take care of yourself on parts in the manual when
repair and measurement. checking Main PCB
Start
Common PCB Ground
REG1 Heater Sink
Input Voltage Is plug connected in ?
115V ± 15%
Connect plug again, & check the plug
loosening.
Is Fuse
on the SMPS PCB
normal?
Check in SMPS part
1) Change FUSE AC 250V 2.0A
2) Replace PCB ASS'Y
☞ Checking method of voltage SMPS input ; Is 115V
VAR1 both terminals, or CN10 both terminal applied to both terminals of
AC power. SMPS power VAR1 ?
Check the assembly and connection of
wire
Is DC 170V
applied to both terminals of
BD101 +,-?
1) Check PCB PATTERN and replace
BD1
Is 12V applied to 2) Replace PCB ASS'Y
☞ Checking method of DC secondary output voltage both terminal of C111?
REG1 input ; Regulator 7805 input → Same
wih C111 both terminals. Replace PCB ASS'Y
DC 12.0V ± 0.8V
Is 5V
applied to both terminal of
C113?
1) Check REG1 (KA7805)
2) Replace PCB ASS'Y
Does
Panel PCB operates
normally?
☞ Checking method of DC secondary output voltage
1) Check & repair the assembly of wire
REG1 input ; Regulator 7805 input → Same
with C113 both terminals.
2) Replace Panel PCB
Is the load
DC 5V ± 0.5V such as relay
normal?
1) Check the contact of Lead Wire
2) Replace the applicable Relay
Is there any (Replace PCB Main)
PCB soldering, Short, or
breakage?
1) Solder again
2) Replace PCB Main
- Check Main PCB connection Normal (Recheck)
- Check the connections between
upper hinge Cabi-Door
- Check Door Panel PCB connection
52
TROUBLESHOOTING
Preliminary Inspection
"Check the compressor with selecting the manual operation"
1. Compressor does not work, unless 5mins pass after satisfying the temperature.
2. Compressor does not work during defrosting.
3. Compressor does not work because it sensing low temperature, unless the fridge & freeze sensor is connected.
Start
Did 5mins No
pass after Compressor
Off?
Yes
Check after 5 mins
Does Yes
Refer to test function in the manual compressor work with manual
operation?
Did buzzer of manual operation sound? No Normal
(Check certainly after manual operation)
Is
Check Cold solder joint / Replace PCB IC10 MICOM #28 hight?
(5V)
Yes
Is NO
Refer to the circuit diagram in the manual CN72 connector
normal?
Yes
Check bad contact of connector
Is NO
COMP ASS'Y
normal?
Yes
Replace / Repair COMP ASS'Y
Normal (Recheck)
53
TROUBLESHOOTING
4-2-8. If alarm sounds continuously without stop (Related with buzzer sound)
Preliminary Inspection
1. The alarm of freezer / fridge will sound(Ding-dong) after 2minutes from initial door open, and it keeps sounding(ding-dong)
at 1 minutes intervals when opening afterward.
2. The alarm sounds because MICOM sense as door-open when door is not pressed completely. So refrigerator inner lamp
will be OFF after 10minutes from sensing door-open. In this case, the inner lamp will not ON though the door is opened
actually.
Is door closed
completely?
Remove the cause after comprehending
the conditions of interference by door
gasket, food, etc.
Is water
penetrated into the door
switch?
Replace door switch
Door & MICOM State
F R
Is input
Door voltage of Main #60 & #52
MICOM(#60) MICOM(#52) changed at door-open &
door-close?
Close 0V(Low) 0V(Low)
Open 5V(High) 5V(High) Repair the trouble of wire connection
and door switch
Is the
connector(CN30) inserted
correctly?
Repair the bad inserting of connector
and bad contact.
Separate the door switch and check if the measured
value of unit is changed from 0Ω Ω to œΩaccording to Is Door
switch On/OFF. S/W itself(unit)
* Fridge Door Switch is magnetic switch. (It can be normal?
operated when door magnet is combined) Replace door switch
Recheck
Main PCB & Door switch
Start
Is manual
operation / defrost
selected?
Cancel the manual operation / defrost
function.
Does buzzer
sound when Power On
again?
Normal
54
TROUBLESHOOTING
Start
Does it sound
'Dingdong' if press a button
on the frontpanel?
Does it make
a sound of 'Door Open'
alarm when opening the door of
freezer or fridge more than
2 minutes?
Check the panel PCB with referring
"How to check Panel Display"
55
TROUBLESHOOTING
Start
Check parts trouble, fallen PCB Pattern, Solder Is the PANEL PCB No
connection of parts normal?
Is the Yes
connector of PANEL PCB part
inserted correctly?
Reinsert connector of PANEL
Yes PCB and check the bad contact.
Is the Yes
connector of upper hinge COVER
inserted correctly?
Reinsert connector and check
Yes the bad contact.
· Check the connecting part of left/right CABI
upper hinge according to left/right opening of Is
door. Main PCB connector(CN50)
No
· Check the connecting part of left/right door
upper hinge according to left/right opening inserted correctly?
door. Reinsert the connector of Main
Yes
PCB and check the bad contact.
No problem / Recheck
① Door Part - Check the connecting wire of upper hinge Panel - Check the disconnection & short between wires.
② Freezer upper CABI - Check the wires between Main PCB - Check the disconnection & short between wires.
56
TROUBLESHOOTING
Start
Is connector of No
upper hinge cover inserted
correctly?
Yes Reinsert the connector and
check the bad contact.
Is Main PCB No
connector(CN50) inserted
correctly?
Yes Reinsert the Main PCB
connector/ Replace
57
TROUBLESHOOTING
4-2-11. If refrigerator Room Lamp does not light up (F,R - Same condition)
1. When you replace the lamp of freezer/fridge, please power off/unplug AC Cord to avoid an electric shock.
2. Please keep in mind you could get burnt by the excessive heating of an incandescent light bulb.
3. Bimetal is installed in the refrigerator Lamp. Check that if Lamp may be OFF by bimetal. (It may be deleted per model.)
Door
F R Is the Door switch No
MICOM(#60) MICOM(#52) contact normal?
Close 0V(Low) 0V(Low) Replace Door S/W
Yes
Open 5V(High) 5V(High)
Is Lamp OFF by No
Applied to the model using bimetal only. (Option)
bimetal operating?
Wait for returning time of bimetal
Yes
Preliminary Inspection
· The inner lamp relay operates lighting/ Is the control No
lights-out according to door open/close. relay of the inner lamp in PCB?
· If inner lamp does not light, check the (RY76)
noise of relay operation. 1) Replace PCB
· Noise of relay operation sounds every Yes (Expected trouble)
Door Open / Close. -. IC71(#15, #16)
· F-LAMP Relay -- RY75 -. IC10(#31, #32)
· R-LAMP Relay -- RY76 -. Relay(RY75,RY76)
Check the connection of RDoor switch and 2) Bad connection of wire
check & repair the inner lamp socket. -. CN71("5" Pink, "3" Blue
Preliminary Inspection
If the door is opened, the contact of door switch will be opened and MICOM will get applied 5V and finally it senses the door open.
If it sense 5V for more 2 minutes afterward, Door-open alarm will sound "Ding-Dong" for 10 seconds in 1 minute cycle.
Therefore,if the door switch has failure, the refrigerator can make a "Ding-Dong" sound per 1minute cycle. Please refer this for its service.
☞ When measure the lamp resistance to the wire, → Resistance can be changed ☞ Checking method of Door Switch voltage
by Lamp input voltage. -. PCB common Ground REG1 Heater Sink and
(Below is the actual measurement and the valued can be changed by function.) CN30-"2"(Brown) : measure the voltage (R Door Switch)
☞ Fridge Lamp(Option) CN30-"1"(Black) : measure the voltage (F Door Switch)
CN72-#9(Red) ↔ CN71#3(Blue) => See the R DOOR Switch at the following picture
; 27Ohm± 10% CLOSE Common PCB Ground
Lamp ; 40W (Basis on 120V) REG1 Heater Sink
☞ Freeze Lamp
CN72-#9(Red) ↔ CN71#5(Pink) OPEN
; 25Ohm± 10%
Lamp ; 40W(Basis on120V)
58
TROUBLESHOOTING
Preliminary Inspection
1. Water supplies directly to water valve. Please shut off the water supplying prior to repair.
2. Power is applied to the one end of wires. Be careful when disassembling not to get an electric shock.
3. To check the Ice Water Valve operation, shall press the Ice Maker Test switch and then check the operation.
(Ice Maker in freezer)
Does No
Main PCB IC10 MICOM #30 have
HIGH(5V) output?
Check Cold solder joint Short/
No Replace PCB
Based on PCB common Ground REG1 Heater Sink
2) IC71 #14 voltage
-.When Ice Water valve waiting (About 12V±0.7V)
-.When Ice Water valve waiting (About 0.7V±0.5V) Does No
Main PCB IC71 #14 have about 0.7V
output?
Check Cold solder joint Short/
Yes Replace PCB
59
TROUBLESHOOTING
4-2-13. If refrigerator ROOM Lamp does not light up (F,R - Same condition) - LED
F R
Door
MICOM(#60) MICOM(#52) Is the Door switch No
contact normal?
Close 0V(Low) 0V(Low)
Open 5V(High) 5V(High) Replace Door S/W
Yes
MICOM(LAMP) State
IC71 State
Is the output voltage of No
IC71 normal?
MICOM IC71 output
(#31/ #32) (#15/ #16) Replace PCB/ Repair the IC71
Yes
0V(Low) 12V(High)
5V(High) 0V(Low)
Is the main PCB connector(CN71) No
insertion status normal?
☞ Output voltage checking method
-. PCB common Ground REG1 Heater Sink and Re-insert the connector
CN71-"5"(Pink) : measure the voltage (F LED Lamp) Yes
CN71-"3"(Blue) : measure the voltage (R LED Lamp)
=> Picture is R LED Lamp operation below.
CLOSE Common PCB Ground Does the main PCB connector(CN71) No
REG1 Heater Sink Output normal?(11~13V)
Check the connector terminal
Yes Replace PCB
OPEN
Is the LED Lamp connected No
Properly?
Normal / Re-check
OPEN
60
5-1) Freezer
1-5
1-4 1-10 1-7
1-8 1-9 1-3 1-5
1 1-4
1-2 1-10
1-1 1-9
1-6
2 8
7 3 8-2
8-1
2-2
2-1 4
5 6
11 10 13
12
10-3
10-1 12-3
10-2 12-2
14
12-1
14-2 14-4 15
14-1 14-5
15-3
14-3
15-2
15-1 15-9
15-8
15-7
15-6
15-4
15-5
61
62
63
5-2) Refrigerator
1 2
1-1 8
2-1
8-2
1-2 2-2
8-1
4
4-1
1-3 1-4
4-2
1-5
1-6
1-6
3 6
3-1 6-1
7
3-2
6-2 7-1
7-2
5
10 10
11-17 11-1
11-15 12-6
11-6 12-4
11 11-9
11-4 12-9
11-7
11-11 11-16 11-19 12-7
11-12
11-13 11-21
11-2
11-3
11-5 11-10 11-8
11-18
11-20
64
66
68
5-3) Cabinet
1 2 2-1
2-2
3 3-1
3-2
8
10
9 6
4-4
4-3
4-2 12
4-1 7
12-1 12-3 11
12-5
12-4
12-4-3 12-4-7
15 12-4-5
15-2
13 12-2
15-1 17 12-4-4
15 12-4-2 12-4-1
16 17
14 15-2
15-1 13-3
14-2
13-1
13-2 13-4
14-1 13-1
69
70
71
3
5
1 7
6
1-4
1-5
1-4 1-2
1-5
1-2
1-3
1-3
9 10 10
72
73
1-2
1-4
1-4
1-3
1-5
3 4 5
5-1
3-1 4-1 5-2
3-2 4-2
3 4 6
3-2 4-2
74
75
5-1) Freezer
1-4 1-6
1 1-5
1-3 1-4
1-2
1-5
1-1
8
2
7 3 8-2
8-1
2-2
4
5 6
2-1
10 11
11-1
10-1
11-2
10-2
12-4
12-1 12-5
12
12-2
12-3
13-3
13-2
13-1 13-9
13-8
13-7
13-6
13-4
13-5
13
76
77
78
5-2) Refrigerator
1 2
1-1 8
2-1
8-2
1-2 2-2
8-1
4
4-1
1-3 1-4
4-2
1-5
1-6
1-6
3 6
3-1 6-1
7
3-2
6-2 7-1
7-2
5
10 10
11-17 11-1
11-15 12-6
11-6 12-4
11 11-9
11-4 12-9
11-7
11-11 11-16 11-19 12-7
11-12
11-13 11-21
11-2
11-3
11-5 11-10 11-8
11-18
11-20
79
81
83
5-3) Cabinet
1 2 2-1
2-2
3 3-1
3-2
8
10
9 6
4-4
4-3
4-2 12
4-1 7
12-1 12-3 11
12-5
12-4
12-4-3 12-4-7
15 12-4-5
15-2
13 12-2
15-1 17 12-4-4
18 12-4-2 12-4-1
16 17
18-3
14 18-2
18-1
13-3
14-2
13-1
13-2 13-4
14-1 13-1
84
85
86
1 3
1-1
87
88
1-1
3 4 5
3 4 6
89
90
6. PCB DIAGRAM
91
PCB DIAGRAM
92
7. Wiring Diagram
93
8. Schematic Diagram
94
SchematicDiagram
95
SchematicDiagram
8-3) Main
96