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SJ-D20N/D24N/D28N/D29N-SLG
SERVICE MANUAL
No. S9633SE26ATUTT
Refrigerator-freezer
MODELS
SJ-D20N-SLG
SJ-D24N-SLG
SJ-D28N-SLG
SJ-D29N-SLG
Refer to "HFC-134a COOLING UNIT" Service Manual for handling this refrigerant.
CONTENTS
CHAPTER 1. SPECIFICATION
CHAPTER 2. DESIGNATION OFVARIOUS PARTS
[1] EXTERNAL DESCRIPTION .......................... 2-1
[2] CONSTRUCTIONS........................................ 2-2
CHAPTER 3. DIMENTIONS
[1] OUTER DIMENTIONS AND
CLEARANCE ................................................. 3-1
[2] INNER DIMENTIONS .................................... 3-3
CHAPTER 4. LIST OF ELECTORICAL PARTS
CHAPTER 5. WIRING DIAGRAM
[1] WIRING DIAGRAM........................................ 5-1
[2] ELECTRIC ACCESSORIES LAYOUT ........... 5-2
CHAPTER 6. FAILURE DIAGNOSIS
[1] OUTLINE OF CONTROL............................... 6-1
[2] CHECK MODE OF DEFROST HEATER
(Forced Defrosting) ........................................ 6-1
[3] RE-SETTING OF MICROCOMPUTER AT
POWER FAILURE ......................................... 6-2
[4] DIAGNOSIS METHOD OF FAILURE............ 6-2
[5] CONVERSION TABLE.................................. 6-3
[6] CIRCUIT DIAGRAM OF MAIN PWB ............. 6-4
CHAPTER 7. FUNCTIONS
[1] ADJUSTABLE TEMPERATURE
CONTROL..................................................... 7-1
CHAPTER 8. ASSEMBLING PROCEDURES OF
MAIN PARTS AND CAUTIONS
[1] F-LOUVER ASS'Y ......................................... 8-1
[2] R CONTROL COV. ASS'Y ............................ 8-4
[3] HOW TO REPLACE THE LAMP................... 8-6
[4] DEFROST HEATER ...................................... 8-7
CHAPTER 9. COOLING UNIT
[1] COOLING UNIT ............................................ 9-1
[2] LOCATION .................................................... 9-2
Parts Guide
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.

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Service Manual
CHAPTER 1. SPECIFICATION
Items SJ-D20N SJ-D24N SJ-D28N SJ-D29N
Type 2-Door
Outer dimensions Height 1253mm(49.3") 1389mm(54.7") 1491mm(58.7") 1627mm(64.1")
Width 545mm(21.5") 545mm(21.5") 545mm(21.5") 545mm(21.5")
Depth 620mm(24.4") 620mm(24.4") 620mm(24.4") 620mm(24.4")
Rated storage volume (Rated volume) 184liter(6.5cu.ft) 212liter(7.5cu.ft) 227liter(8.0cu.ft)
Defrosting System Heater system
Start Automatic
Finish Automatic
Temperature control Automatic (Adjustable)
No-frost freezer Yes
Interior lamp 1
Evaporating pan 1
Freezer Compartment F-shelf 1
F-shelf S 1
Ice cube maker Twin ice cube maker
Ice storage box 1
Door pocket 1 2
Refrigerator Compartment Fresh case 1
R shelf ass'y — 1
R shelf S ass'y 1
R shelf L ass'y 1
V shelf 1
Vegetable case 1
Egg pocket 1
Small pocket — 1
Carry case ass'y — 1
Bottle pocket 1
Door pocket 1
Deodorizing unit 1 (Honeycomb type)
Stand Yes No
RATING
Items SJ-D20N SJ-D24N SJ-D28N SJ-D29N
Rated voltage (V) 220
Rated frequency (Hz) 50
Climate class T
Power input (W) 100
Current input (A) 0.53
Defrosting current (A) 0.58
Defrosting power (W) 128
Refrigerant (Charging quantity) [Non-flammable] HFC-134a(90g) HFC-134a(90g) HFC-134a(95g) HFC-134a(95g)
Insulation blowing gas [Flammable] Cyclo pentane (HC)
Net Weight (kg) 41 43 46 48
PLUG TYPE
Plug cord 2 pin
Plug type A-1
Destination mark T
COLOR
Items -SLG
Outside color Silver
Inside color White

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CHAPTER 2. DESIGNATION OFVARIOUS PARTS
[1] EXTERNAL DESCRIPTION
The names in parenthesis "[ ]" are the denominations used in the REPLACEMENT PARTS LIST.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
15
16
17
18
19
20
15
14
1. Freezer shelf [F-shelf]
2. Freezer shelf (movable) [F-shelf s]
3. Freezer temp.control knob
4. Ice cube maker
5. Ice cube box [Ice storage box]
6. Fresh room
7. Refrigerator temp.control knob
8. Light [Lamp]
9. Refrigerator shelf [R-shelf ass'y]
(Except for SJ-D20N)
10.
Half shelf(1 pair) [R-shelf s ass'y,R-shelf l ass'y]
11. Vegetable shelf [V-shelf]
12. Vegetable crisper [Vegetable case]
13. Adjustable foot [Adjustable leg]
14. Magnetic door seal [Door packing]
15. Door pocket
(SJ-D20N/SJ-D24N ; 2 pockets,
SJ-D28N/SJ-D29N ; 3 pockets)
16. Light switch
17. Egg pocket
18. Small pocket
(Except for SJ-D20N)
19. Cosmetic box
(Except for SJ-D20N)
20. Bottle pocket

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[2] CONSTRUCTIONS
Fan motor
Def-thermistor
F-temp. control knob
R-temp. control knob
Evaporator
Defrost heater
Deodorizing unit
R-thermistor
PWB L ass'y
Running capacitor
Lamp
Compressor
Starting relay
Protector
Evaporating pan
Mark: Cold air flow
Fuse ass'y

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CHAPTER 3. DIMENTIONS
[1] OUTER DIMENTIONS AND CLEARANCE
1. SJ-D20N
2. SJ-D24N
(Unit:mm)
9
34
4
620
638.5
1095
545
1155
365
970
545
443.5
757.5
1253
(Unit:mm)
9
34
4
620
638.5
1095
545
115 5
365
970
545
443.5
893.5
1389

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CHAPTER 4. LIST OF ELECTORICAL PARTS
ITEMS
TYPE NAME
Thermo. fuse
Defrost heater
Lamp
Compressor
Starting Relay
Overload Relay(Protector)
Main PWB
(D20/D24/D28)
SF70E
FL1152-SZ
FPWB-A451CBKZ
220-240V 378
220-240V/50Hz
Working temp. : 70 C
140W at 230V
Open/ Close : 120 / 61 C
Cooling capacity : 136W (50Hz)
Main coil : 23.8
Aux. coil : 42.4
(at 75 C)
W
Common
Aux. coil
Main coil
240V 15W
Door switch SDKNA20101 250V 0.25A 3 Terminals push-button type
RATING
SPECIFICATIONS
R Thermistor
Def.Thermistor
#187 StraightTerminal
125V 0.5 A
5TM149PFBYY-53
33 (at 25 C)
Running Capacitor
RC-EZA237CBZZ
400V 3˴(
Fan motor 3R00044B AC 200-240V, 50Hz
250V 10A
DC 5V R0 = 6.4 k , B(0) = 3811
DC 5V R0 = 6.4 k , B(0) = 3811
220-240V/50Hz
Main PWB
(D29)
FPWB-A490CBKZ
220-240V/50Hz
50/60Hz
PGN0SBT

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CHAPTER 5. WIRING DIAGRAM
[1] WIRING DIAGRAM
Be sure to replace the electrical parts with specified ones for maintaining the safety and performance of the set.
SOURCE CORD
(BR)
FAN MOTOR
FM
(O)
DOOR SWITCH
(BR)
L
LAMP
(S-B)
(BL)
DEF-THERMISTOR
R-THERMISTOR
22
FUSE
(W)
DEF-HEATER
(BK)
PWB
STARTING RELAY
COMPRESSOR
PROTECTOR
(GY)
RUNNING CAPACITOR

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[2] ELECTRIC ACCESSORIES LAYOUT
F-LOUVER ASS’Y
FAN MOTOR
FM
LEAD EV COVER
FUSE
DEF-THERMISTOR
DEF-HEATER
R-CBOX-K
PWB
LAMP
R-THERMISTOR
DOOR SWITCH
TERMINAL COVER
COMPRESSOR
PROTECTOR
STARTING RELAY
CABINET
HARNESS FL ASS’Y
SOURCE CORD
RELAY WIRE ASS’Y
(BOTTOM ANGLE)
RUN CAP.