Samsung RS757LHQESR User manual

TRUE BULIT IN REFRIGERATOR
REFRIGERATOR
REFRIGERATOR CONTENTS
1. PRECAUTIONS (SAFETY WARNINGS)·······4
2. PRODUCT SPECIFICATIONS······················8
3. FULL DISASSEMBLY AND ASSEMBLY ···15
4. FUNCTION FOR FAILURE DIAGNOSIS····31
5. DISASSEMBLY AND REASSEMBLY ········49
6. PCB DIAGRAM···········································64
7. WIRING DIAGRAM·····································69
8. BLOCK DIAGRAM······································70
9. REFERENCE INFORMATION ····················71
BASIC MODEL : RS757LHQESR/**
MODEL NAME : RS27FDBTNSR/AA
RS27FDBTNSR/AC
RS27FDBTNSR/**
For the latest parts information, Please access to our service web site
( • North America : http://gspn3.samsungcsportal.com)

IMPORTANT SAFETY NOTICE
The service guide is for service men with adequate backgrounds of
electrical, electronic, and mechanical experience.
Any attempt to repair a major appliance may result in personal injury
and property damage.
The manufacturer or dealer cannot be responsible for the
interpretation of this information.
SAMSUNG ELECTRONICS AMERICA, INC.
Technical Service Guide
Copyright ©2013
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.
WARNING

Contents
1. Precautions (safety warnings) ....................................................................4
2. Product specifications ..............................................................................8
2-1) Product Specifications.................................................................................................................................... 9
2-2) Dimensions of Refrigerator (Inches) ............................................................................................................ 12
2-3) Refrigeration Cycle .......................................................................................................................................13
2-3-1. Cold Air Circulation ..........................................................................................................................14
3. full Disassembly and assembly ................................................................ 15
3-1) PRECAUTION .................................................................................................................................................16
3-2) How to Disassemble Each Component for A/S ........................................................................................ 17
3-3) Dispenser Cover ...........................................................................................................................................18
3-4) Handle & Cover Comp & Freezer Door .................................................................................................... 20
3-5) Interior Overview ........................................................................................................................................... 21
3-6) Bin & Shelf & Drawer ...................................................................................................................................22
3-7) Ice Maker & Evap ........................................................................................................................................ 23
3-8) Duct & Rail ................................................................................................................................................... 26
3-9) Unit & Pcb Box ............................................................................................................................................ 28
3-10) Motor Damper ............................................................................................................................................. 29
3-11) Heater & Water Valve................................................................................................................................. 30
4. function for failure diagnosis ................................................................... 31
4-1) Test mode (manual operation / manual defrost function) ....................................................................... 32
4-2) Display function of Communication error .................................................................................................. 33
4-3) Self Diagnostics function ............................................................................................................................. 33
4-4) Load Status Check function ....................................................................................................................... 36
4-5) Wi-fi(Network) Module Check Function .................................................................................................... 38
4-6) How to Access the AP Mode and register your Smart Home Product ................................................. 39
4-7) MAC Address Display Mode ...................................................................................................................... 39
4-8) Refrigerator Option (Service Mode) function ............................................................................................ 40
4-9) Option TABLE ............................................................................................................................................... 42
4-10) Diagnostic method according to the trouble symptom (Flow Chart) ..............................................................47
5. disassembly and reassembly ..................................................................49
5-1) CCase Output Terminal ............................................................................................................................... 49
5-2) How to Enter the Test Mode .......................................................................................................................51
6. PCB Diagram ........................................................................................64
6-1) PBA Layout with part position ..................................................................................................................... 65
6-2) Connector Layout & Descriptions of Inverter Controller Board .............................................................. 66
6-3) Connector Layout with part position (Main Board) ...................................................................................67
6-4) Connector Layout with part position (Inverter PBA, SMPS PBA) ........................................................... 68

Contents
7. Wiring Diagram ......................................................................................69
8. Block Diagram ...................................................................................... 70
8-1) Whole block diagram ................................................................................................................................... 70
9. REFERENCE INFORMATION .................................................................... 71
9-1) Trouble Shooting ........................................................................................................................................... 71
9-2) Q&A ................................................................................................................................................................73

4
1. PRECAUTIONS (SAFETY WARNINGS)
●Unplug the appliance before replacing or repairing electrical parts.
⇢ Be careful to avoid electric shock.
●When exchanging the parts, use the correct parts.
⇢ Check the model name, rating voltage, rating current, running temperature
symbols.
●When troubleshooting, connect firmly the types of harness.
⇢ Make not to be separated when some power is imposed.
●Check the traces of water infiltration at the electric parts.
⇢ If there is a trace of water infiltration, exchange or tape the parts.
●Check the assemble status of parts after troubleshooting.
⇢ It must be in the same assembled state when compared with the state before
disassembly.
●Check the use circumstance of refrigerator.
⇢ If the refrigerator is installed at the place that is damp or wet, or status of
installation is unstable, change the installation place.
●Ground the refrigerator properly
⇢ Particularly, Be sure to earth when there is a risk of an electric leakage by
humidity or wetness.
● Do not use multi plugs in a plug socket at the same time.
Check if the power cord and socket is damaged, pressed, squeezed, or fired.
⇢If the plug or plug socket is damaged, repair or exchange it immediately.
●Do not allow consumers to repair the appliance by themselves.
●Do not store other materials except the foods.
⇢ Drugs or scientific materials : difficult to keep precise temperature.
⇢ The inflammables(alcohol, benzene, ether, LP gas, butane gas etc.):
have risk of explosion.

5
PRECAUTIONS (SAFETY WARNINGS)
Read all instructions before repairing the product and keep to the instructions in order to
prevent danger or property damage.
CAUTION/WARNING SYMBOLS DISPLAYED
SYMBOLS
Indicates that
adanger of deathor
serious injuryexists.
Indicates that a
riskof personal
injuryor material
damageexists.
means Prohibition”.
means Do not disassemble”.
means No contact”.
means The things to be followed”.
means Earth to prevent Electric
shock”.
means Power cord should be
unplugged from the consent”
Unplug the appliance before
servicing or replacing electrical
parts.replacement.
• It may cause electric shock.
Warning
Warning & Caution
Caution
Unplug
Use the rated components on
the replacement.
• Check the correct model, ratedvoltage,
rated current, operating emperature
and so on.
On repair, make sure that the
wires such as harness are bundled
tightly.
• Bundle tightly wires in order not to be
detached by the external force and then
not to be wetted.
Check if there is any trace indicating
the permeation of water.
• If there is that kind of trace, change the
related components or do the necessary
treatment such as taping using the
insulating tape
After repair, check the
assembled state of components.
• It must be in the same assembled state when
compared with the state before disassembly.
On repair, remove completely dust
or other things of housing parts,
harness parts, and check parts.
• Cleaning may prevent the possible fire by
tracking or short.
Rated
components

6
PRECAUTIONS (SAFETY WARNINGS)
❈ Please let users know following warnings & cautions in detail.
Do not allow users to put bottles or kinds of
glass in the freezer.
• Freezing of the contents may inflict a
wound.
Do not allow users to store narrow
and lengthy bottles or foods in a
small multipurpose room.
• It may hurt you when refrigerator door is
opened and closed resulting in falling
stuff down.
Do not allow users to store
pharmaceutical products, scientific
materials, etc., in the efrigerator.
• The products which temperature control
should not be stored in the refrigerator.
Do not allow users to store
articles on the product.
• Opening or closing the door may cause
things to fall down, with may inflict a
wound.
Prohibited
Warning & Caution
Do not allow users to disassemble,
repair or alter.
• It may cause fire or abnormal operation
which leads to injury.
Do not
disassemble
Do not allow users to insert the
power plugs for many products
at the same time.
• May cause abnormal generation of heat
or fire.
Prohibited
Do not allow users to bend the
power cord with excessive force
or do not have the power cord
pressed by heavy article.
• May cause fire.
Do not allow users to install the
refrigerator in the wet place or
the place which water splashes.
• Deterioration of insulation of electric
parts may cause electric shock or fire.
Make sure of the earth.
• If earthing is not done, it will cause
breakdown and electric shock.
Earth

7
PRECAUTIONS (SAFETY WARNINGS)
For proper installation, this refrigerator must be
placed on a level surface of hard material that is the
same height as the rest of the flooring. This surface
should be strong enough to support a fully loaded
refrigerator, or approximately 573lb(260kg).
FLOORING
Protect the finish of the flooring. Cut a large
section of the cardboard carton and place
under the refrigerator where you are working.
When moving, be sure to pull the unit straight
out and push back in straight.
MOVING

8
2. PRODUCT SPECIFICATIONS
2-1) Product Specifications.................................................................................................................................... 9
2-2) Dimensions of Refrigerator (Inches) ............................................................................................................ 12
2-3) Refrigeration Cycle .......................................................................................................................................13
2-3-1. Cold Air Circulation ..........................................................................................................................14

9
PRODUCT SPECIFICATIONS
2-1) Product Specifications
Model Name
BASIC NEW
Remark
RS27FDBTNSR/AA DYF42SBIWS
Product Image
GROSS
volume
Total 27.5 cu.ft (779ℓ) 24.3 cu.ft (688ℓ)
Freezer Room 10.7 cu.ft (303ℓ) 9.2 cu.ft (261ℓ)
Fridge Room 16.8 cu.ft (476ℓ) 15.1 cu.ft (427ℓ)
Dimension
Width 48 inch (1217 mm) 42 inch (1067 mm)
Height 83.2 inch (2113 mm) 83.5 inch (2121 mm)
Depth 25.8 inch (655 mm) 25.8 inch (655 mm) Without Handle
Weight (Net) 612.9 lb (278 kg) 573 lb (260 kg)
Rated (V/Hz) AC 115V / 60Hz AC 115V / 60Hz
Motor Power Consumption 162W 162W
Heater Power Consumption 657W 657W
Refrigerator Type Indirect Cooling Indirect Cooling
Refrigerant R134a R134a
Refrigerant Quantity 230g 230g
Freezer Performance 4STAR 4STAR

10
PRODUCT SPECIFICATIONS
Model Name
BASIC NEW
RS27FDBTNSR/AA DYF42SBIWS
Cooling Components
Compressor
Model Name MKV190CL2B/E01 MKV190CL2B/E01
Starting Type INVERTER INVERTER
Oil Charge FREOL α-15(ESTER) FREOL α-15(ESTER)
Evaporator Refrigerator
FIN CROSS TYPE FIN CROSS TYPE
Freezer SPLIT FIN TYPE SPLIT FIN TYPE
STEP MOTOR VALVE
DC14V
Unipolar 1-2 Phase
Excitation Method
DC14V
Unipolar 1-2 Phase
Excitation Method
Condenser Forced or Natural Convection Forced or Natural Convection
Dryer MOLECULAR SIEVE XH-9 MOLECULAR SIEVE XH-9
Capillary
Tube
Freezer ID0.85 X L3300 4.4 Kg/㎠ ID0.85 X L3300 4.4 Kg/㎠
Refrigerator ID0.85 X L3000 4.2 Kg/㎠ ID0.85 X L3000 4.2 Kg/㎠
Refrigerator → Freezer ID3.36 X L1000 ID3.36 X L1000
Refrigerant R-134a R-134a
Freezer
THERMISTOR
(F-SENSOR)
PX-41C
MAX
5~-8℉
(Default: 0℉)
5~-8℉
(Default: 0℉)
MID
MIN
Refrigerator
THERMISOR
(F-SENSOR)
PX41C
MAX 34℉ 34℉
MID 37℉ 37℉
MIN 44℉ 44℉
Defrost Related Components
Initial Defrost Cycle (F+R Defrost) 6 Hr ±10 Min 6 Hr ±10 Min
F-Defrost Cycle
12~48Hr (Vary according to the
using conditions)
16~48Hr (Vary according to the
using conditions)
R-Defrost Cycle
6~24Hr (Vary according to the
using conditions)
8~24Hr (Vary according to the
using conditions)
Idling Time 10 ± 2 Min 10 ± 2 Min
F-Defrost
Sensor
Model
Name
THERMISTOR (PX-41C) THERMISTOR (PX-41C)
SPEC 5.0KΩ at 25℃ 5.0KΩ at 25℃
R-Defrost
Sensor
Model
Name
THERMISTOR (PX-41C) THERMISTOR (PX-41C)
SPEC 5.0KΩ at 25℃ 5.0KΩ at 25℃
Bimetal
Rated
AC 125V, 6A / 250V, 3A
Alt) AC 125V, 10A / 250V, 5A
AC 125V, 6A / 250V, 3A
Alt) AC 125V, 10A / 250V, 5A
On/Off ON / OFF ON / OFF
Operating
Temp 40±5℃ ON, 60±5℃ OFF 40±5℃ ON, 60±5℃ OFF

11
PRODUCT SPECIFICATIONS
Model Name
BASIC NEW
RS27FDBTNSR/AA DYF42SBIWS
Electric Components
F- Defrost Heater
On upon F-Defrost
AC 115V 300W (SHEATH HEATER) AC 115V, 300W (SHEATH HEATER)
F- Drain Heater AC 120V 35W (CORD HEATER) AC 120V, 35W (CORD HEATER)
F- SUB Drain Heater AC 115V 10W (COLD HEATER) AC 115V, 10W (COLD HEATER)
R- Defrost Heater On upon R-Defrost AC 115V, 110W (HEATER PIPE) AC 115V, 110W (HEATER PIPE)
R -Drain Heater AC 115V, 30W (CORD HEATER) AC 115V, 30W (CORD HEATER)
HOME BAR Heater - -
Water Supply Heater - -
Dispenser Heater AC 120V, 8W (CORD HEATER) AC 120V, 8W (CORD HEATER)
Ice Maker Heater AC120V, 145W (SHEATH HEATER) AC120V, 145W (SHEATH HEATER)
F-Defrost Heater Overheat Protection Bimetal AC 125V, 6A / 250V, 3A
Alt) AC 125V, 10A / 250V, 5A
AC 125V, 6A / 250V, 3A
Alt) AC 125V, 10A / 250V, 5A
R-Defrost Heater Overheat Protection Bimetal
NOISE FILTER AC 250V 10A, 50/60 HZ AC 250V 10A, 50/60 HZ
Overload
Protector
Model Name 4TM445PHBYY-82 4TM445PHBYY-82
On Temp 61 ± 9℃ 61 ± 9℃
Off Temp 135 ± 5℃ 135 ± 5℃
MAIN FUSE AC 250V 10A(SB) AC 250V 10A(SB)
F-Room Cooling Fan Motor
DC12V DREP3030LC /Φ67, L237.4,
BLOWER FAN
DC12V DREP3030LC /Φ67, L237.4,
BLOWER FAN
R-Room Cooling Fan Motor
DC12V DREP3030LB /Φ67, L295.5,
BLOWER FAN
DC12V DREP3030LB /Φ67, L295.5,
BLOWER FAN
Comp Cooling Fan Motor
DC12V DRCP5030LA /
Φ170, SHROUD FAN
DC12V DRCP5030LA /
Φ170, SHROUD FAN
Fresh Island Fan Motor - -
Fresh Island DAMPER - -
ICE MAKER AC MOTOR 115V/60 Hz, AL TRAY DC MOTOR 12V, AL TRAY
Freezer Lamp
Top - LED Lamp DC 12V (6 CHIPS * 1EA)
Rear LED Lamp DC 12V (6 CHIPS * 4EA) -
Side - LED Lamp DC 12V (18 CHIPS * 1EA)
Fridge Lamp
Top LED Lamp DC 12V (9 CHIPS * 1EA) LED Lamp DC 12V (5 CHIPS * 1EA)
Rear LED LAMP DC 12V (6 CHIPS * 4EA) -
Side - LED Lamp DC 12V (14 CHIPS * 2EA)
Convertible Room Lamp - -
Door S/W(HOME BAR) - -
Door S/W AC 125V,11A / 250V,11A AC 125V,11A / 250V,11A
Power Cord AC 125V, 15A AC 125V, 15A
Earth Screw BSBN (Brass Screw) BSBN (Brass Screw)
MAIN S/W AC 250V 16A AC 250V 16A
Interlock S/W (ICE ROOM) AC 125V,11A / 250V,11A AC 125V,11A / 250V,11A

12
PRODUCT SPECIFICATIONS
FG
L
N
M
H
IJ
K
2-2) Dimensions of Refrigerator (Inches)
(inches)
MODEL
Front and side dimensions Dimensions with doors open
A B C D E F G H I J K
DYF42SBIWS
42
(1067mm)
28.3
(720mm)
83.5
(2121mm)
93.5
(2374mm)
86.8
(2204mm)
42.5
(1079mm)
48.4
(1229mm)
39.2
(995mm)
13.5
(343mm)
17.7
(449mm)
43.3
(1101mm)
(inches)
MODEL
Enclosure dimensions
L M N
DYF42SBIWS
42
(1067 mm)
24
(610 mm)
84
(2134mm)
Location of
Electrical
Receptacle
Water Supply
Opening
(20x20)
DOOR 90° OPEN DOOR 135° OPEN

13
PRODUCT SPECIFICATIONS
2-3) Refrigeration Cycle
COMPRESSOR
COMPRESSOR
FRE EVAPORATOR
CONNECTOR
CAPILLARY
REF EVAPORATOR
SUB-CONDENSER PIPE
FRE/REF/HOT PIPE
REF CAPILLARY TUBE
FRE CAPILLARY TUBE FRE EVAPORATOR
REF CAPILLARY TUBE
FRE CAPILLARY TUBE(RED)
SUB-CONDENSER PIPE
(FRIDGE COMPARTMENT)
(FREEZER COMPARTMENT)
REF EVAPORATOR
DRYER
DRYER

14
PRODUCT SPECIFICATIONS
2-3-1. Cold Air Circulation
FREEZER FAN FRIDGE FAN
REF EVAPORATOR
FRE EVAPORATOR
FREEZER FRIDGE
FRONT

15
3. FULL DISASSEMBLY AND ASSEMBLY
3-1) PRECAUTION .................................................................................................................................................16
3-2) How to Disassemble Each Component for A/S ........................................................................................ 17
3-3) Dispenser Cover ...........................................................................................................................................18
3-4) Handle & Cover Comp & Freezer Door .................................................................................................... 20
3-5) Interior Overview ........................................................................................................................................... 21
3-6) Bin & Shelf & Drawer ...................................................................................................................................22
3-7) Ice Maker & Evap ........................................................................................................................................ 23
3-8) Duct & Rail ................................................................................................................................................... 26
3-9) Unit & Pcb Box ............................................................................................................................................ 28
3-10) Motor Damper ............................................................................................................................................. 29
3-11) Heater & Water Valve................................................................................................................................. 30

16
FULL DISASSEMBLY AND ASSEMBLY
• Unplug the refrigerator before cleaning and making repairs.
• Do not dissemble or repair the refrigerator by yourself.
- It may cause risk of causing a fire, malfunction and/or personal injury.
• Remove any foreign matter or dust from the power plug pins.
- Otherwise there is a risk of fire.
• Do not use a cord that shows cracks or abrasion damage along its length or at either end.
• Do not plug several appliances into the same multiple power board. The refrigerator should always be plugged into
its own individual electrical which has a voltage rating that matched the rating plate.
- This provides the best performance and also prevents overloading house wiring circuits, which could cause a fire
hazard from overheated wires.
• Do not install the refrigerator in a damp place or place where it may come in contact with water.
- Deteriorated insulation of electrical parts may cause an electric shock or fire.
• The refrigerator must be grounded.
- You must ground the refrigerator to prevent any power leakages or electric shocks caused by current leakage from
the refrigerator.
• Do not put bottles or glass containers in the freezer.
- When the contents freeze, the glass may break and cause personal injury.
• Do not store volatile or flammable substances in the refrigerator.
- The storage of benzene, thinner, alcohol, ether, LP gas and other such products may cause explosions.
- Required Tools
3-1) PRECAUTION
IMAGE ITEM USE
Phillips Head Driver Use for assembling and
disassembling of screw
Flat Head Driver
Use for assembling and
disassembling of HomeBar,
Dispenser, Deli
Cartessen Box, Main PBA etc...
Socket Wrench ∮10mm
(3/8”)
Use for assembling and
disassembling of Door Hinge
Spanner Use for assembling and
disassembling of Door Auto-Closer

17
FULL DISASSEMBLY AND ASSEMBLY
3-2) How to Disassemble Each Component for A/S
1) The descriptions of external parts are illustrated in the figure below,and the methods of disassembling the parts are
indicated in order for you to refer to the relevant page, assigned to each number below.
❶ Machine Compartment Cover
❷ Freezer Door
❸ Fridge Door
❹ Door Handle
❺ Dispenser
NO Description
❻ Display
❼ Dispenser Lever
❽ Kick-Plate
❾ Hinge
❿ Leg
NO Description
Make sure to turn the refrigerator off before disassembling the components as shown below.
10 10

18
FULL DISASSEMBLY AND ASSEMBLY
Part Name How To Do Descriptive Picture
DISPENSER -
COVER PCB
1. After referring to the Dispenser-
Display Disassembly, remove the
6 screws after separating the 2
Connectors (Lamp Connector, Wifi
Connector) and Temp sensor to
disassemble the Display Cover.
2. Lift up the PBA, Lamp, Wifi module
in the arrow direction and remove it.
3. Wifi module
3-3) Dispenser Cover

19
FULL DISASSEMBLY AND ASSEMBLY
Part Name How To Do Descriptive Picture
DISPENSER–
DISPLAY
① Loosen the one screw at
the bottom of display and
remove deco cover.
② Push (-)driver between
display and assy case
ice route, pull out the
assy case ice route to
the front.
③ Disconnect the
connector.
㣝㣞㣟
DISPENSER–
Ass’y COVER
ICE ROUTE
① Disconnect the wires and
hoses from the assembly.
② Loosen the circled 2
screws.
③ Push the shown in two
hook in the direction of
Inside, and pull out the
assy case ice route to
the front.
㣝㣞㣟
DISPENSER–
PUSH LEVER
MICRO
SWITCH
① Hold the lever as shown
in the picture.
② Squeeze your four
fingers into the gap on
the top right side and
pull it.
③ Disconnect Micro Switch.
㣟