Sharp SJ-GC440VBK User manual

SJGC480VSL
SERVICE MANUAL
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
Refrigerator-freezer
MODELS
SJ- GC440V -BK/SL
SJ-
GC480V -BK/SL
SJ-SC440V-BE/SL/WH
SJ-SC480V-BE/SL/WH
No.S2115SJ39CSUMT
DESTINATION E
[1] INSTALATION ………………………………… 2
[2] SPECIFICATIONS ……………………………… 3
[3] FICHE …………………………………………… 5
[4] DESIGNATION OF VARIOUS PARTS ……… 6
1. EXTERNAL DESCRIPTION ……………… 6
2. CONSTRUCTIONS ………………………… 7
[5] DIMENSIONS…………………………………… 8
1. OUTER DIMENSIONS AND CLEARANCE 8
2. INNER DIMENSIONS ……………………… 10
[6] LIST OF ELECTRICAL PARTS ……………… 11
[7] WIRING DIAGRAM …………………………… 12
1. WIRING DIAGRAM ………………………… 12
2. ELECTRIC ACCESSORIES LAYOUT …… 13
3. CIRCUIT DIAGRAM ………………………… 14
4. PRECAUTIONS FOR USING LEAD-FREE SOLDER …… 15
[ 8 ] FAILURE DIAGNOSIS ……………………… 16
1. OUTLINE OF CONTROL ………………… 16
2.
CHECK MODE OF DEFROST HEATER (Forced Defrosting) … 16
3.
RE-SETTING OF MICROCOMPUTER AT POWER FAILURE … 17
4. DIAGNOSIS METHOD OF FAILURE AROUND PWB … 17
5. METHOD OF STOPPING
THE DOOR ALARM TEMPORARILY …… 18
6. SELF-DIAGNOSIS MODE ………………… 18
7. CONVERSION TABLE BETWEEN
TEMPERATURE AND RESISTANCE VALUE … 19
[ 9 ] ASSEMBLING PROCEDURES OF
MAIN PARTS AND CAUTIONS ……………… 20
1. FAN LOUVER AND E.V COVER ASSEMBLY … 20
2. R CONTOROL COVER ASSEMBLY …… 22
3. R SHOWER DUCT ASSEMBLY ………… 25
4. DEFROST HEATER ASSEMBLY ………… 26
[10] COOLING UNIT ……………………………… 28
1. COOLING UNIT ……………………………… 28
2. LOCATION …………………………………… 29
Parts Guide
CONTENTS
Refer to "REFRIGERATING-CYCLE REPAIR MANUAL" for handling this refrigerant.
Refrigerant; R600a

SJGC480VSL
2
[1] INSTALATION
2. INSTALATION
Free standing type
•To ensure adequate ventilation for this refrigerator, install with 6 cm space at the rear and both sides, with a
minimum space of 9 cm above the refrigerator.
•This refrigerator shall be used under the ordinary place condition between +5 ºC and +43 ºC of ambient
temperature, and also not be left under -10 ºC for long days.
•To be used this refrigerator within the range of the rated voltage±6%.
6cm or more 6cm or more
9cm or more

SJGC480VL
3
[2] SPECIFICATIONS
Items SJ-GC440V SJ-SC440V SJ-GC480V SJ-SC480V
Type 2 Door
Outer dimensions Height 1670 mm ( 65.7 ") 1770 mm ( 69.7 ")
Width 644 mm ( 25.4 ") 644 mm ( 25.4 ")
Depth 688 mm ( 27.1 ") 682 mm ( 26.9 ") 688 mm ( 27.1 ") 682 mm ( 26.9 ")
Rated storage volume Total 363 liter ( 12.9 cu.ft) 393 liter ( 13.9 cu.ft)
Freezer 99 liter ( 3.5 cu.ft) 99 liter ( 3.5 cu.ft)
Refrigerator 264 liter ( 9.4 cu.ft) 294 liter ( 10.4 cu.ft)
Rated gross volume Total 400 liter ( 14.1 cu.ft) 431 liter ( 15.2 cu.ft)
Defrosting System Heater system
Start Automatic
Finish Automatic
Door material Glass Steel Glass Steel
Temperature control Automatic (Adjustable)
No-frost freezer Yes
Interior lamp (refrigerator) 1
Evaporating pan 1 (unremovable)
Freezer Compartment F-shelf 1
Ice cube maker Twin ice cube maker
Ice storage box 1
Freezer bar 1
RF door pocket 1
Refrigerator Compartment Fresh case 1
Fresh door 1
R glass shelf ass'y 2
V glass shelf ass'y 1
Vegetable case 1
Divider 1
Egg tray 1
R door pocket 1
RF door pocket 1
Utility pocket 2
Utility pocket L ―1
Bottle pocket 1
Tube stand 1
Plasmacluster unit 1
Deodorizing unit (Honeycomb type) 1
R ATING
Items SJ-GC440V SJ-SC440V SJ-GC480V SJ-SC480V
Rated voltage (V~) 220-240
Rated frequency (Hz) 50
Climate class SN-T
Rated current (A) 0.45-0.50
Rated input of heating systems (W) 125 -148
Defrosting input (W) 125 -148
Refrigerant (Charging quantity) [Flammable] R600a(50g)
Insulation blowing gas [Flammable] Cyclo pentane (HC)
Net Weight (kg) 68 64 70 66

SJGC480VSL
4
PLUG TYPE
Plug cord 2pin+Earth
Plug type CS
Destination mark E
COLOR
Items -BK -SL -WH -BE
Outside color Black Silver White Beige
Inside color White White White White
Receptacle

SJGC480VL
5
[3] FICHE
THE FICHE(according to ANNEX : 94/2/EC)
NO. Items Description Remark
1Trade mark
2Model name SJ-GC440V SJ-SC440V SJ-GC480V SJ-SC480V
3Type Category;7 Category;7 Category;7 Category;7 fridge/freezer
4Energyefciencyclass A+ A+ A+ A+ A++/A+/A~G
5Eco-award mark ― ― ― ― 880/92
6Energy consumption
(230V 50Hz at 25°C)
348 348 350 350 EN153:2006
kWh/year kWh/year kWh/year kWh/year
7Net storage volume of fresh
food storage compartment
264L 264L 294L 294L
8
Net storage volume of frozen
food
(4star compartment)
99L 99L 99L 99L
9Star rating of frozen food
compartment
10 No frost No frost No frost No frost No frost
11 Temperature rise time 14h 14h 14h 14h at 25°C
12 Freezing capacity 4.75kg/24h 4.75kg/24h 4.75kg/24h 4.75kg/24h at 25°C
13 Climate class SN-T SN-T SN-T SN-T
14 Noise 37dB(A)
re 1 pw
37dB(A)
re 1 pw
37dB(A)
re 1 pw
37dB(A)
re 1 pw 86/594/EEC
(96/57/EC)
15 Tier 4 4 4 4

SJGC480VSL
6
[4] DESIGNATION OF VARIOUS PARTS
1. EXTERNAL DESCRIPTION
The names in parenthesis “[ ]” are the denominations used in the PARTS GUIDE.
1. Freezer shelf [Fshelf]
2. Ice cube maker
3. Ice cube box [Ice storage box]
4. Fresh case & door
5. Refrigerator light [Lamp]
6. Freezer temp. control knob
7. Refrigerator temp. control knob
8. Refrigerator shelf [R glass shelf ass'y] (2 pcs.)
9. Hybrid cooling panel (Aluminum panel)
The panel is cooled from the rear,thus indirectly cooling
the refrigerator compartment.In this way,food is
refrigeratedgently,withoutexposingittocoldairow.
10. Fruit and Vegetable shelf [V glass shelf ass'y]
11. Fruit and Vegetable crisper [Vegetable case]
12. Divider [V parting plate]
13. Adjustable feet [Adjustable leg] (2 pcs.)
14. Foot cover [Base cover]
15. Magnetic door seal [Door packing] (2 pcs.)
16. Freezer bar
17. Door pocket [RF door pocket] (2 pcs.)
18. Refrigerator pocket [R door pocket]
19. Egg holder [Egg tray]
20. Utility pocket (2 pcs.)
21. Utility pocket (large)
(Only for SJ-GC480V,SJ-SC480V)
•Donotreplacetherightandleftpositionoftheutility
pocket and the utility pocket (large).
22. Bottle pocket
23. Tube stand
Prevents bottles etc. from falling.
Stick-type food products stored inside.
SJ-GC480V
SJ-SC480V
19
20
15
17
18
1
2
3
4
5
8
9
10
6
7
11
12
13 13 15
16
17
21
22
23
14
20
SJ-GC440V,SJ-SC440V

SJGC480VL
7
2. CONSTRUCTIONS
Cold air flow
Evaporator
Fuse ass'y
Damper ass'y
Freezer
compartment
Refrigerator
compartment
Defrost heater
R-thermistor
Aluminum panel
F-thermistor
DEF-thermistor
Deodorizer
F fan motor
Main PWB ass'y
Caster
Foot cover
Evaporating pan
Running capacitor
Refrigerator temp. control knob
Lamp
Freezer temp. control knob
Adjustable leg ass'y
Compressor
Starting relay
Overload relay(Protector)
Plasma cluster

SJGC480VSL
8
[5] DIMENSIONS
1. OUTER DIMENSIONS AND CLEARANCE
1. SJ-GC440V
2. SJ-GC480V
This model is Free standing type.
(Not built-in type.)
644 644
1110
410
132
688
710
60
60 60
90
0331 0721
0761
6701 425
16
9
more than
more than
This model is Free standing type.
(Not built-in type.)
644 688
710
60
90
644
1110
410
132
60 60
0331 0721
0771
425
6711
16
9

SJGC480VL
9
3. SJ-SC440V
4. SJ-SC480V
This model is Free standing type.
(Not built-in type.)
644 644
1103
403
132
682
703
60
60 60
90
0331 7021
0761
6701 425
16
9
more than
more than
This model is Free standing type.
(Not built-in type.)
644 682
703
60
90
644
1103
403
132
60 60
0331 0721
0771
425
6711
16
9

SJGC480VSL
10
2. INNER DIMENSIONS
The dimensions between shelves can be changed by setting the shelves on the other rails.
1. SJ-GC440V/SC440V
2. SJ-GC480V/SC480V
4782
135
465
72
485
495
497
280
445
472
45
218
55
218
55
460
116
465
72
295
200
193
230
268
82
86
72
140
225
305
305
318
125
45
125
45
135
116
4590350360
101
72
190
280
157205146
520
497
480
30
480
497
497
495
473082
135
72
465
45
472
55
218
55
218
82
213
116
460
72
465
280
445
295
200193
230
268
82
72
86
125
45
125
55
125
55
4591145260430
213
135
116
101
72
140
225
305
305
318
157205246
620
190
280
485

SJGC480VL
11
[6] LIST OF ELECTRICAL PARTS
ITEMS TYPE NAME RATING SPECIFICATIONS
R Thermistor
F Thermistor
Defrost Thermistor
—
—
—
DC 5V
DC 5V
DC 5V
R0=6.4kΩ,B(0)=3811
R0=6.4kΩ,B(0)=3811
R0=15kΩ,B(0)=3811
Thermo. fuse 12Y 250V 2A Working temp. : 76 °C
Defrost heater — 240V378Ω 140W at 230V
Fan motor FBA12J15VXD DC 15V —
F Door switch
R Door switch
D3 D -211
D3 D -211
250V 0.5A/125V 1A
250V 0.5A/125V 1A
3 Terminals lever type
3 Terminals lever type
R Lamp — 240V 50Hz #187 Straight Terminal, Pitch 6
Compressor FL15S68NAA 220-240V/50Hz Cooling capacity : 200W (50Hz)
Maincoil:14.3Ω
Aux.coil:21.1Ω
(AT 75 °C)
Starting Relay PGN6SBT 50/60 Hz 22±4.4Ω(at25°C)
Overload Relay (Protector) 5TM232RFBYY-53 — Open/ Close : 130 ± 5.0 / 61 ± 9.0 °C
Running capacitor RC-EZA254CBZZ —400V5μF
Main & Sub PWB ass'y
VR PWB
FPWB-A778CBKZ
FPWB-A554CBKZ
220-240V
DC 5V
—
Ionizer-K (Plasmacluster) CK IT TA159AK K Z DC12V —
Damper ass'y DTHM-A043CBKZ DC12V —
Common
Main coil
Aux. coil

SJGC480VSL
12
[7] WIRING DIAGRAM
1. WIRING DIAGRAM
Besuretoreplacetheelectricalpartswithspeciedonesformaintainingthesafetyandperformanceoftheset.
BK:BLACK
BR:BROWN
R : RED
O : ORANGE
Y : YELLOW
GR : GREEN
BL : BLUE
V : VIOLET
GY : GRAY
W : WHITE
P : PINK
SB:SKY-BLUE
G/Y : GREEN/YELLOW STRIPE
CONNECTOR IN
TERMINAL BOX
CONNECTOR
TRC301
TRC302

SJGC480VL
13
2. ELECTRIC ACCESSORIES LAYOUT
BK : BLACK
BR : BROWN
R : RED
O : ORANGE
Y : YELLOW
GR : GREEN
BL : BLUE
V : VIOLET
GY : GRAY
W : WHITE
P : PINK
SB : SKY-BLUE
G/Y : GREEN/YELLOW STRIPE

SJGC480VSL
14
Rating AC220-240V 50/60Hz
Main Control Board Circuit Diagram 1. Rating of resistors without appointment are 1/10W, error 5%(J). 2. Rating of capacitors without appointment are 0.01uF/50V,0.1uF/25V.
3. Part with parentheses are not in use, but can be inserted.
R room
Lamp
R door
SW
F door
SW
Defrost Heater Thermal FUSE
C364
100uF
10V
DC5V
C365
100uF
10V
C366
0.1uF
C367
0.1uF
C368
0.1uF
C369
0.1uF
C370
0.1uF
Brown
Blue
Running
Capacitor
Protector
Compressor
Start relay
C319
0.01uF
50V
C320
0.1uF
25V
DC5V
R394
10k
DC5V
RESET
R393
1k
IC309
BD4842G
VDD
2
VOUT
1GND
N.C.
3
N.C.
4
5
Q319
RN1401 or
KRC101S
BUZZER
R318
820Ω
1/2W
Chip 3226
14.5V
BZ301
PKM22EP
4012
TP334
CN311
B4B-PH-KS
(B5B-PH-KS)
2 3 4
TP348 TP347
RESET
MODE
DC5V
R389
10k
5
(R388)
10k
1
RAM_Data TP349
TP322
R363
3Ω(chip)
1/2W
(3226)
C362
100uF
10V
R362 10k
R361 1k
DC5V
D321
1SS133
I_detect
TP323
C363
0.1uF
25V
(C361)
1uF
50V
CN305
B5P(8-2,5,7)-VH
1
3 4
6
8
1
2 4
CN306
B3P(4-3)-VH
TP312
TP319
R316
10k 1/2W
D308
1N4005
D309
1N4005
TP318
R315
10k 1/2W
C325
10uF
50V
TP314
R314 4.7k 1/4WTP313
D313
1SS133
PC302
PS2561AL
TP315
L301
SS26V-070510(51mH)
3
C374
RE-1201
R380
Fuse Resistor
(200Ω) Jumper
VRS305
10V511
TRC302 BCR8PM
R379
200ΩFuse Resistor
C373
2200pF
250V
R378
100Ω
1/2W
PR302
APT1221AX
Defrost
14.5V
R377
390Ω1/2W
R376
390Ω1/2W
TP317 (D312)
1SS133
(RY301)
G5NB-1A
or FTR-F3
or ALD112(3A) R_Lamp_B
JMP301
Jumper
1
2
34
TP320
TP308
IC304
KIA7805API
14.5V
C313
0.1uF
50V
(D320)
1N4005
I
1O3
G
2
DC5V
TP310
C314
100uF
10V C315
0.1uF
25V
TSL1112RA-100M3R7-PF
(L303)
1 2 3 4 5
10
9 7 6
C376
10000pF 250V
C377
10000pF250V
D304
RL2Z
C312
470uF
25V
TP309
TRANS301
WA018CB
C379
10000pF250V
C378
10000pF250V
C307
82uF
450V
TP306
C309
220pF
2kV
S/OCP
1
FM/SS
2
3GND
4FB/CC/OLP
D
D
VCC
8
7
6
5
R305
1.2Ω
1/2W C310
0.01uF
(R306)
220k
1/2W
Film
(C308)
0.01uF
630V
(D302)
EG01C
R304
10Ω
1/4W
C311
22uF
50V
D303
D1NL20U
IC302
STR-A6251M
TP344
Film
C302
0.1uF
310V
TP345
TH301
NTPAD8R0-1
TP307
DB301
DI156
TP302
1
3
CN301
B3P5-VH
5
TP301
TP311
F303
8A 250VTP303
VRS303
14V471
R301
910k
1/2W
R302
910k
1/2W
Film
C301
0.1uF
310V
TP305
F301
2.5A 250V
TRC301 TMB166G-L
C372
RE-1201
R375
Fuse Resistor
(200Ω) Jumper
VRS304
10V511
R374
200ΩFuse Resistor
C371
2200pF
250V
R373
100Ω
1/2W
PR301
APT1221AX
COMP
14.5V
R372
390Ω1/2W
R371
390Ω1/2W
(R324)
10K
14.5V
D307
1N4005
TP316
R312
4.7k
DC5V
(Q321)
RN1401 or
KRC101S
Door SW
HS301
HS29455
HS302
HS29457
14.5V
1 2 3 4 5 6 7
F-TH
DEF-TH
FM
F Fan motor
CN310
B07B-XASK
1 4 2 3
Vcc GND Vss
R353
10kF
TP336
14.5V
I_detect
TP337
F_FAN_L
R352 10kF
DC5V
F_FAN_H
R351 3.16kF
DC5V
Q318
RN2401 or
KRA101S
Q317
RN2401 or
KRA101S
C357
0.1uF
25V
R358
16.9kF
DEF-TH
F-TH
R359
16.9kF
R357 4.7k
R356 4.7k
(C355)
0.01uF
50V
(C354)
0.01uF
50V
TP341
TP340
C356
0.1uF
25V
DC5V
D301
1N4005
CN309
B10B-XASK
VR401(F:Right)
VR402(R:Left)
RK09K1130(10k)
DM
Electric Damper
1 2 3 4
C332
0.1uF
25V
R343
220k
R-VR
F_VR
R341
220k
R342 4.7k
R340 4.7k
(C330)
0.1uF
25V
TP338
TP339
C335
0.1uF
25V
DC5V
5 6 7 8
7
8 9
10
IN4
5GND 6
VCC
1
IN1
2 3IN2 4IN3
OUT1 OUT2 OUT3 OUT4
10
9 8 7
DUMP_B2
DUMP_B1 DUMP_A2
DUMP_A1
TP328 TP329 TP330 TP331
3
4 5
6
IC306
LB1948M
R-TH
R330
6.34kF
R-TH
R329 4.7k
(C336)
0.01uF
50V
TP325
C337
0.1uF
25V
DC5V
1
2
Plasma
Cluster
CN313
B02B-XASK
1 2
C360
0.1uF
50V
TP321
PLASMA
Q331
RN1401or
KRC101S
Q332
RN2401 or
KRA101S
I_detect
14.5V
F304
200mA 32V
(R360)
10k
R_Lamp_B
R_Lamp_A
GTH301
NCP18XH
103E03RB
R320
10kF
DC5V
(C359)
0.1uF
25V
TP333
(C358)
0.01uF
R319
4.7k TP332
F_VR
R_VR
DUMP_A1
DUMP_A2
DUMP_B1
DUMP_B2
R_TH
MODE
RESET
2
1
3
CF301
CSTLS8M00G56-A0
(R321)
1M
DC5V
DC5V
(R322) 10K
RAM_Data
C321
0.1uF/25V
C322
100uF/10V
(R323) 10K
C323
0.1uF
25V
(C324)
100uF
10V
Enfroce_Def
Enfroce_PCI
IC301
R5F21336ANFP
DC5V
(R326)
10K
(R325)
10K
DC5V
(R328)
10K
(R327)
10K
F_FAN_H
F_FAN_L
PLASMA
DEF_TH
F_TH
BUZZER_A
R313
4.7K
Q303
RN1401 or
KRC101S
Q302
RN1401 or
KRC101S
12345678
2423222120191817
16 15
14 13 12 11
10
9
25 26 27 28
29 30 31 32
TXD2
P3_5
VCC
XIN
VSS
XOUT
RESET
MODE
VREF
P1_7
P1_6
P1_5
P1_4
AN11
AN10
AN9
AN8
P3_4 P3_3 P2_2 P2_1 P2_0 P3_1 P4_5
AN7
P0_1 P0_2 P0_3 P0_4
AN2
AN1
P0_7
CN321
08P-SJN
1
2
3
4
5 6 7 8
1
2
3
4 5 6 7
8
14.5V
DC5V
BUZZER_ABUZZER
COMP
Defrost
R_Lamp_A
Door SW
14.5V
DC5V
CN320
B08B-XASK-1-A
F302
4A 250V
C342
100uF
25V
D306
1N4005
D305
1N4005
(C347)
0.01uF/50V
(JMP304)
OPEN R384
10K
TP327
DC5V
Enfroce_PCI
(C348)
0.01uF/50V
R382
10k
TP326
DC5V
(JMP303)
OPEN
Enfroce_Def
(C349)
0.01uF/50V
(C345)
0.01uF/50V (C346)
0.01uF/50V
(C350)
4700uF/50V
PC301
PS2561AL
C316
4700pF
50V
R309
1k
1/4W
R308
1.8k 1/4W
(C317)
0.1uF 50V
R311
8.66kF
1/4W
C318
0.1uF 50V
R310
1.8kF
1/4W
IC303
TA76431S
12
3
4
1
TAB301
#187
Tab Terminal
1
JV303
SIN-21T-1.8S
(JMP305)
OPEN
(C340)
0.01uF
14.5V
(C341)
0.01uF
14.5V
(C339)
0.01uF
DC5V
TP324
TP315
3. CIRCUIT DIAGRAM

SJGC480VL
15
4. PRECAUTIONS FOR USING LEAD-FREE SOLDER
1) Employing lead-free solder
The PWB of this model employs lead-free solder. This is indicated by the "LF" symbol printed on the PWB and in the
servicemanual.Thesufxletterindicatesthealloytypeofthesolder.
Example:
2) Using lead-free wire solder
When repairing a PWB with the "LF" symbol, only lead-free solder should be used. (Using normal tin/lead alloy
solder may result in cold soldered joints and damage to printed patterns.)
As the melting point of lead-free solder is approximately 40°C higher than tin/lead alloy solder, it is recommend that a
dedicated bit is used, and that the iron temperature is adjusted accordingly.
3) Soldering
Asthemeltingpointoflead-freesolder(Sn-Ag-Cu)ishigherandhaspoorerwettability,(ow),topreventdamage
to the land of the PWB, extreme care should be taken not to leave the bit in contact with the PWB for an extended
periodoftime.Removethebitassoonasagoodowisachieved.Thehighcontentoftininleadfreesolderwill
cause premature corrosion of the bit. To reduce wear on the bit, reduce the temperature or turn off the iron when it is
not required.
Leaving different types of solder on the bit will cause contamination of the different alloys, which will alter their
characteristics,makinggoodsolderingmoredifcult.Itwillbenecessarytocleanandreplacebitsmoreoftenwhen
using lead-free solder. To reduce bit wear, care should be taken to clean the bit thoroughly after each use.
Indicates lead-free solder of tin, silver and copper

SJGC480VSL
16
[ 8 ] FAILURE DIAGNOSIS
1. OUTLINE OF CONTROL
1) ON/OFF Control of Compressor
ON/OFF of the compressor will be controlled depend on the temperature detected by the R-thermistor and
F-thermistor. (Normal cooling control)
In case the surrounding temperature is high at the power supply input, the compressor will be ON at once and the
normal cooling control will start after several hours.
•During 5 minutes after the compressor stops, it will not start regardless of the detected temperature by R-thermistor
and F-thermistor.
2) Defrosting
Microcomputer calculates the appropriate timing of defrosting and defrosting is made automatically. Therefore
no manual operation by user is required. The cycle of defrosting varies depend on the usage condition of the
refrigerator. (Maximum time 50 hours, minimum time 40 minutes)
It is possible to perform defrosting forcedly by turning ON the power with the door of the refrigerating room opened.
3) Thermistor
Thermistors are installed in 4 places; in the refrigerator and freezer compartment, and on the Main PWB and close to
Evaporator. (R-thermistor, Fthermistor,Outside temp-thermistor, Def-thermistor)
R-thermistor and F-thermistor reads the temperature in the refrigerator and freezer compartment respectively and
controls ON/OFF of the compressor and OPEN/CLOSE of the electrical damper.
Def-thermistor detects the temperature around the evaporator and shows the progress of defrosting.
Outside temp-thermistor reads the surrounding temperature of refrigerator. It changes the operation mode by the
outside temperature.
2. CHECK MODE OF DEFROST HEATER (Forced Defrosting)
The operation of the defrost heater can be checked by starting it.
In case the failure of defrosting is suspected, this is an effective inspection method.
1) Starting Method
At the power OFF condition.
1. Keep the door of the refrigerator or freezer compartment open.
2. SetbothTemp.ControlKnobstothepositionshowninthegure.
3. Keep the door open and supply power source.
2) Normal Operation
1. Approximately 2 seconds after power supply, the relay on the PWB will be turned ON and the defrost heater will
 beelectriedfor10seconds.
2. After 10 seconds, if the temperature of Def-thermistor reaches high enough (over 10°C) and judged as
defrosting completion, it returns to the normal control.
 Ontheotherhand,ifthetemperatureofDef-thermistorisstilllow(under10°C),thedefrostheaterwillbeelectried
 untilthetemperatureofDef-thermistorreachesthespeciedtemperatureorhigher.
 Aftercompletionofelectrication,itreturnstothenormalcontrolafter5minutes.
* In the case that there is any abnormality in Door Switch, Potentiometer (Control knob), any thermistors, or the
Temp. Control Knob is not in the position corresponding to the value of the rating voltage settled to the PWB itself,
 thismodewillnotbeenterednorthedefrostheateriselectried.
220-240V models

SJGC480VL
17
3. RE-SETTING OF MICROCOMPUTER AT POWER FAILURE
•At the power failure for over 0.2 second, the control of the microcomputer will be reset.
(Microcomputer might continue to operate for approximately 10 seconds maximum at power failure depending on the
loadattheoperation.Whenyouneedthedinitepoweroffcondition,approximately30secondsisnecessary.)
•When the power is re-supplied, the normal cooling will be resumed.
4. DIAGNOSIS METHOD OF FAILURE AROUND PWB
In case of any abnormality of refrigerator, check by the following procedure;
1. Disconnect power supply and check the following point.
• Is there any failure portion in inserting connectors?
2. Detach the PWB and check the appearance.
•Is there any burning or abnormal damage?
3. Checktheconditionsofthefuseandthevaristor.(Fuseandvaristorarelocatedatthepositioninthegure.)
•Under the condition of power supply plug connected;
In case of cooling but indoor lamp lighting, there might be a possibility of fuse (F301) melt down.
(However, these indications do not conclude the cause of the defect.)
  WhenthefuseF302ismeltdown,indoorlamp,doorswitchanddefrostingheaterarenotelectried.
When the fuse F303 is melt down, PWB does not operate at all.
Melting in the fuse cannot be checked visually (as the safer one than transparent glass tube is used).
•Be sure to detach the connector “CN301” when you measure the resistance between the both ends of the fuse by
the tester.
•Next, check the appearance of varistors.
4. Check whether the temperature (resistance value) shown by R-thermistor is correct or not. (Refer to the table
below.)
•Detach the connector “CN309” on the PWB and measure the resistance value between 1 and 2 pins.
5. Check whether the temperature (resistance value) shown by Def-thermistor is correct or not. (Refer to the table
below.)
•Detach the connector “CN310” on the PWB and measure the resistance value between 6 and 7 pins.
6. Check whether the temperature (resistance value) shown by F-thermistor is correct or not. (Refer to the table
below.)
• Detach the connector “CN310” on the PWB and measure the resistance value between 4 and 5 pins.
Fuse 301
Varistor 303
Varistor 305
Varistor 304
Fuse 302
Fuse 303

SJGC480VSL
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5. METHOD OF STOPPING THE DOOR ALARM TEMPORARILY
Adjust both temp.control knobs at the same time as following steps.
(Adjust 1 ~ 3 within 20 seconds)
•The door alarm will sound again after approximately 2 days.
6. SELF-DIAGNOSIS MODE
1) How to input
1. Open R door.
2. Set the both R and F temp. control knob to "MAX" position.
Operate 3 and 4 within 20 seconds
3. Operate the only R temp. control knob as follows.
  "MAX"→"MIN"→"MAX"
4. Close and open the R door three times
  “close→open→close→open→close→open”
5. When MPU accept the Self-diagnosis mode , a long buzzer rings pi--- .
And the check mode goes on for 2 minutes.
2) Operation in mode
1. The compressor ,F fan motor and Plasmacluster are compulsorily turned on.
2. If there is any trouble with each thermistor(F, R and DEF ), F fan motor ,Plasmacluster, MPU keeps a buzzer
ringing during check mode (for 2 minutes) .
If there is no trouble , the buzzer doesn't ring.
Error buzzer
Error Part Buzzer Detail of error as concerned.
F-thermistor Part is no good
Connector miss input, wiring cut
PWB side is error
R-thermistor
DEF-thermistor
Thermistor (GTH)
F fan motor Part is no good
Fan lock, Current is low or high.
Connector miss input, wiring cut
PWB side is error
Plasmacluster Part is no good
Connector miss input, wiring cut
PWB side is error
: 0.5sec ON and 0.5 sec OFF
: 2sec ON and 0.5 sec OFF
3sec OFF between each pattern
Adjust to MIN
Adjust to MAX
Return to MED
1
3
2
1
2
31
2
3

SJGC480VL
19
Example buzzer : F fan motor
* If there is no trouble , the buzzle keeps ringing “ pipipi pipipi pipipi .....” until the door is closed.
7. CONVERSION TABLE BETWEEN TEMPERATURE AND RESISTANCE VALUE
1) R-thermistor, F-thermistor
Temperature
(°C)
Resistance Value
(KΩ)
Temperature
(°C)
Resistance Value
(KΩ)
Temperature
(°C)
Resistance Value
(KΩ)
-25 26.1 -9 10.3 74.5
-24 24.5 -8 9.8 84.3
-23 23.1 -7 9.2 94.1
-22 21.7 -6 8.8 10 3.9
-21 20.5 -5 8.3 11 3.7
-20 19.3 -4 7. 9 12 3.6
-19 18.2 -3 7. 5 13 3.4
-18 17.1 -2 7.1 14 3.2
-17 16.2 -1 6.7 15 3 .1
-16 15.3 06.4 20 2.5
-15 14.4 16.1 25 2.0
-14 13.6 25.8 30 1.6
-13 12.9 35.5 35 1.3
-12 12.2 45.2 40 1.1
-11 11.5 55.0
-10 10.9 64.7
2) Def-thermistor
Temperature
(°C)
Resistance Value
(KΩ)
Temperature
(°C)
Resistance Value
(KΩ)
Temperature
(°C)
Resistance Value
(KΩ)
-25 61.2 -9 24.1 710.6
-24 57. 5 -8 22.9 810.1
-23 5 4 .1 -7 21.7 99.6
-22 50.9 -6 20.5 10 9.2
-21 47.9 -5 19.5 11 8.7
-20 45.2 -4 18.5 12 8.3
-19 42.6 -3 17. 5 13 8.0
-18 40.1 -2 16.6 14 7. 6
-17 37. 9 -1 15.8 15 7.3
-16 35.7 015 20 5.8
-15 33.7 114.3 25 4.7
-14 31.9 213.6 30 3.8
-13 30.1 312.9 35 3.1
-12 28.5 412.3 40 2.5
-11 26.9 511.7
-10 25.5 611.1
buzzer
ON
0.5sec
3sec OFF
Repet
2sec
0.5sec
3sec
2sec
OFF
0.5sec 0.5sec
0.5sec 0.5sec

SJGC480VSL
20
[ 9 ] ASSEMBLING PROCEDURES OF MAIN PARTS AND CAUTIONS
CAUTION: DISCONNECT THE UNIT FROM THE POWER SUPPLY BEFORE ANY REPAIRING.
1. FAN LOUVER AND E.V COVER ASSEMBLY
1-1. How to remove the Fan louver
1) Take out 2 screws with screw driver.
2) Pull the Fan louver toward yourself to take off.
Figure A-1
1-2. E.V cover assembly
1) Stick E.V cover sealer c to F fan motor. (Figure A-2)
Figure A-2
2) Insert terminal F-Thermistor and Def-thermistor in the housing.(Figure A-3)
Figure A-3
Fan louver
Screw
Screw
F fan motor
EV cover sealer c
?S?o ?S?o
F-THERMISTOR
DEF-THERMISTOR
FUSE ASS’Y
DEF-THERMISTOR
F-THERMISTOR
YLP-06V-B (VO)