SERVICE MANUAL
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
CHAPTER 1. SPECIFICATION
CHAPTER 2. DESIGNATION OF VARIOUS PARTS
[1] EXTERNAL DESCRIPTION........................... 2-1
2-2...............................SNOITCURTSNOC ]2[ .........
CHAPTER 3. DIMENTIONS
[1] OUTER DIMENTIONS AND
3-1........................................ECNARAELC .........
[2] INNER DIMENTIONS .................................... 3-2
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.......................................... 6-1
[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. ASSEMBLI NG PROCEDURES OF
MAIN PARTS AND CAUTIONS
[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
CONTENTS
SJ-C19SS/C20XX
No.S1042SJ17GHZTT
Refrigerator-freezer
MODELS
SJ-C19SS-SL/SLG/GR/BL
SJ-C20XX-SL
Refer to "HFC-134a COOLING UNIT" Service Manual for handling this refrigerant.
Refrigerant; HFC-134a
DESTINATION.........T
[1] F-LOUVER ASS'Y .........................................8-1
[3] PRECAUTIONS FORUSING LEAD-FREE
SOLDER......................................................... 5-3
SJ-C20XX SJ-C19SS
35
1 – 1
CHAPTER 1.
SPECIFICATION
RATING
Outer dimensions Height
"
Depth
Rate gross volume Total
Freezer
Refrigerator
Defrosting System
Start
Finish
Freezer Compartment F-shelf
Ice cube tray
Ice storage box
Door pocket
Refrigerator Compartment Fresh case
RV-glass shelf ass’y
Vegetable case
Egg pocket
Bottle pocket
Door pocket
1
1
1
Automatic (Adjustable)
Yes
1 (LED)
2-Door
Heater system
Automatic
Automatic
1
1
1
1
1
Items
Type
No-frost freezer
Interior lamp
Evaporating pan
Temperature control
SJ-C19SS
Rated voltage (V~)
Rated frequency (Hz)
Climate class
Rated power input (W)
Rated current (A)
Rated input of heating system
(W)
Defrosting input (W)
Net Weight (kg)
Items
Refrigerant (Charging quantity) [Non-flammable]
50
T
101
0.85
121
121
HFC-134a(70 g)
220
Insulation blowing gas [Flammable]
Cyclo pentane (HC)
1
Deodorizer unit
1 (Honeycomb type)
1
1365mm(53.7")
535mm(21.1 )
560mm(22.0")
167liter(5.9cu.ft)
36liter(1.3cu.ft)
131liter(4.6cu.ft)
3
Width
RV shelf
SJ-C20XX
SJ-C19SS
SJ-C20XX
-
37
-
3
COLOR
Items -SL
Outside color Silver
Inside color White
PLUG TYPE
Plug cord 2 pin
Plug type Destination mark T
-BL
Blue
-SIL
Silver
-GR
Green
SJ-C19SS/C20XX
2 – 1
. T SIL S T R A P T N EM E C ALP E R eht ni desu sn o itanimoned e h t era "] [" sisehtnera p ni seman ehT
SJ-C20XX
1
2
14
3
9
13
12
11
8
7
6
4
5
16
15
14
17
13
1. Freezer shelf [ F-shelf ]
2. Ice cube tray
3. Ice cube box [ Ice storage box ]
4. Freezer temp.control knob
5. Fresh room
6. Express ice making button
7. LED Light [ Lamp ]
8. Refrigerator temp.control knob
9. Refrigerator shelf
[ RV glass shelf ass’y SJ-C20XX ; 2 pcs.
RV shelf SJ-C19SS ; 2 pcs. ]
11. Vegetable crisper [ Vegetable case ]
12. Stand
13. Magnetic door seal [ Door packing ]
14. Door pocket
15. Egg pocket
16. Light switch
17. Bottle pocket
CHAPTER 2. DESIGN
ATION OF VARIOUS PARTS
[1] EXTERNAL DESCRIPTION
10
10. Vegetable shelf
[ RV glass shelf ass’y SJ-C20XX
RV shelf SJ-C19SS ]
SJ-C19SS/C20XX
Fa n motor
Def-thermistor
F-temp . contro l knob
R-temp . contro l knob
Evaporator
Defrost heater
Deodorizin g unit
R-thermistor
PW B L ass'y
LED Lamp
Compressor
Startin g relay
Protector
Evaporating pan
Mark : Col d ai r flow
Fuse ass'y
[2] CONSTRUCTION
Stand
2 - 2
LED PWB
Running capacitor
SJ-C19SS/C20XX
3 – 1
[1] OUTER DIMENTIONS AND CLEARANCE
1. SJ-C20XX
2. SJ-C19SS
(Unit:mm)
9
560
1032
535
1092
362
957
535
395
823
1365
6060
60
130
8
(Unit:mm)
1032
535
1092
362
957
535
395
823
1365
60
60
60
130
9
560
615
8
CHAPTER 3. DIMENTIONS
SJ-C19SS/C20XX
3 – 2
[2] INNER DIMENTIONS
(Unit:mm)
380
360
260
375
45
415
65
105
65
170
48
395
370
175
400
390
390
115
175
200
100
190
90
100
80
115
80
225
225
380
220
395
225
190 144
81
1. SJ-C20XX
2. SJ-C19SS
(Unit:mm)
380
360
260
375
45
415
65
105
65
170
48
395
370
175
400
390
390
115
175
200
100
190
90
100
80
115
80
225
225
380
220
395
225
190 144
81
SJ-C19SS/C20XX
4 – 1
Common
Aux . coil
Mai n coil
ITEMS TYPE NAME R A T I N G SP EC I F I C A T I O N S
R Thermistor
Defrost Thermistor
―
DC 5 V
DC 5 V
R 0 = 6 . 4 k Ω , B ( 0 ) = 3 8 11
R 0 = 6 . 4 k Ω , B ( 0 ) = 3 8 11
Thermo. fuse 12Y
Defrost heater ― 2 20 - 2 4 0 V 3 92 Ω 135 W a t 2 3 0 V
Fan motor
3R00121 A C 200 - 24 0V , 5 0H z
Door switch SDKNA20101 2 50V 0 . 2 5A
1 25V 0 . 5 A
3 T e rm i na l s p u s h - b o tt o n t y pe
Compressor
C-BZN100L5L 2 20 - 24 0V / 50 H z C oo l i n g c a pac i t y : 1 06 W ( 5 0H z )
M a i n co i l : 2 3 . 1 Ω
A u x . co i l : 28.9 Ω
( a t 75 ° C )
Starting Relay PTH7M220 5 0 / 6 0 H z 22 ± 4 . 4 Ω ( a t 25 ° C )
Overload
Relay(Protector) 4TM-189RHBYY-53
O pe n / C l ose : 1 30 ± 5.0 / 61 ± 9 . 0°C
Main PWB FPWB-A706CBKZ 22 0 -
24 0 V ―
PXN-36D
25 0 V 2A
W o r k i n g t e m p . : 7 6 °C
LED PWB
FPWB-A709CBKZ 12 V DC Maximum 100 mA , White LED
CHAPTER 4. LIST OF ELECTRICAL PARTS
Running Capacitor
RC-EZA249CBZZ
400V 4 F
―
250V 20A
5 – 1
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.
* Note : R-th assembly on LED PWB
*
SJ-C19SS/C20XX
5 – 2
[2] ELECTRIC ACCESSORIES LAYOUT
SJ-C19SS/C20XX
1 . E mplo yin g le ad-f r ee s o ld e r
T h e P W B o f t hi s mode l e m p loys l e a d - f re e sold e r . T h i s i s i n d i ca t ed b y t h e " L F " s y mbo l pr i n t e d on t he P W B a n d i n t h e s e rv i ce ma n u al . T h e s u f f i x le t t e r
indica t es t h e a l l o y t y p e o f t h e s o l d e r .
E xa m p l e:
2 . Using l e ad - f r ee w i re s o lder
W h en r e p a i r i n g a P W B w i t h t he " L F " s y m bo l , o n l y l ea d - f r ee so l d e r sh o u l d b e u se d . (U s i n g n o r m a l t i n / l e a d a l l o y s o l de r ma y r e s u l t i n c o l d so l d er e d
joi n t s a n d dam a ge t o pr i n t e d pa t t ern s . )
A s t he me l t i n g p o in t o f l e a d- f r e e s o l d e r i s a p p r ox i ma t e l y 4 0 ° C hi ghe r t ha n t i n / l ea d al l o y s o l d e r , i t i s r e co m m e nd t h a t a d e d i c a t e d bi t i s
us e d , a n d t h a t
t h e i r o n t e m pe ra t ur e i s a d j us t ed a c co r d i n g l y .
3 . Sold e ring
A s t he me l t i n g p o i n t o f l e a d - f r e e s o l de r ( S n - A g - Cu ) is h i g h er a nd h a s poo r e r w e t t a b i l i t y , ( f l o w) , t o p r e ve n t d a m a g e t o t h e la n d o f t h e P W B , ex t r em e
c a r e s h o u l d b e t a k e n n o t t o l ea v e t h e bi t i n con t a c t wi t h t he P W B f o r a n e x t e n d ed p er i od o f t i me . Rem o v e t h e b i t a s s o o n a s a g ood f l o w is a c h i e v ed .
T he hi gh c o n t e n t o f t i n i n le a d f r e e sol d e r will c a u s e p r em a t ur e c o r r o s i o n o f t h e b i t . T o r e d u c e w e ar o n t he b i t , r e d u c e t he t e mp e ra t ure or t u r n o f f t h e
i r o n when i t i s n o t re q u i r e d .
L e a v i n g d i f f e r e n t t y p e s o f s o l d e r on t h e b i t wi l l c a u s e c o n t a
m i n a t i o n o f t h e d i f f e r e n t a l l o ys , w h i c h wil l a l t e r t h e i r c h a r a c t e r i s t i cs , m a k i n g g o o d s o ld e r in g
m o r e d i ff i c u l t . I t will b e n e c e s sar y t o cl e a n a n d r e p l ac e b i t s m o r e o f t e n w hen u s i ng l e a d - f r e e s ol d e r . T o r e du c e b i t w e a r , c a r e s h ou l d b e t a k e n t o c l ea n
t h e b i t t horo ug h l y a f t e r e a c h use .
Indicate s lead-fre e solde r o f tin , silve r an d copper
[3] PRECAUTIONS FOR USING LEAD-FREE SOLDER
5 - 3
SJ-C19SS/C20XX
6 – 1
1 . O N/ O F F C o n t r o l o f C o m p r e s s o r
• O N / OF F o f t h e c o m pr e s s o r wi l l be c on t r olled depend o n t he t em pe r a t u r e de t e c t e d b y t he R- t hermis t or . (Nor m a l c oo l ing con t rol )
• W h en t he rapid ice ma k i ng i s r eques t ed by user du r i ng t he opera t i o n , t h e c o mpr e ssor will be O N and c ool i ng o p e r a t ion wil l b e s t a r t ed
r egardles s o f t he de t ec t ed t e m pera t ure b y t he t her m i s t o r s . Howeve r , i f reque s t ed d u ring t he de f ro s t ing ope r a t ion , t he r e que s t wil l be e x e cu t e d
a ft e r t he c o mple t i on o f de f ros t i n g and O N o f t he c o mp r e ssor migh t b e delayed .
• D uring 5 minu t es a f t e r t he co m p res s or s t o p s , i t w i ll no t s t ar t regardle s s o f t he de t e c t ed t e m pera t ure by R - t he
r mis t or.
2. Defrosting
M i c r oco m pu t e r c a l c ula t es t he appr o p ria t e t i m i ng o f de f ros t ing and de f ros t i ng is made au t o m a t i c al l y . T here f o r e no manu a l opera t i o n b y us e r i s
require d . T he c y cle o f de f ros t ing v a ries depend o n t he u s age c o nd i t ion o f t h e re f r i g e r a t o r . ( M aximu m t i me abou t 50 hours , m i n i m um t i m e 40 minutes. )
3 . T h e r m i s t o r
T her m i s t or s a r e ins t alled in 2 place s ; in t he r e f r igera t or , an d clo s e t o t he E v apora t o r . ( R - t he r mis t o r , De f - t he r m i s t o r )
R- t her m i s t o r de t ec t s t he t e mpera t ure i n t he re f r igera t or co m p ar t m en t r e spec t i vely and c on t r o l s O N / OF F o f com p resso r .
De f - t h ermis t or de t e c t s t he t e mpe r a t ure around t h e eva p ora t o r and show s t he p r ogress o f de f ros t ing .
• At the power failure for over 0.25 second, the control of the microcomputer will might be reset.
• Microcomputer might continue to operate for approximately 10 seconds maximum at power failure depending on the load at the operation. Approx-
imately 30 seconds is necessary for the definite power OFF condition.
• When the power is re-supplied, the normal cooling will be resumed.(If cold enough in the cabinet, the microcomputer will begin defrosting in 40
minutes according to the condition.)
• The temperature and operation mode set by user will be maintained even if a power failure occurred.
(However
defrosting, rapid ice making, and timer will not be maintained.)
T h e o p e r a t i on o f t h e de f r os t h e a t e r c a n be c he cke d b y s t a r t i n g i t .
I n c a s e t h e f ailu re o f d e f r o s t in g is s u sp ec t e d , t h i s i s a n e f f e c t i v e in sp e c t i o n me t h od .
1 . S t a r t i ng M e th o d
A t t he p o we r O F F c ond i t i on .
1 ) K e ep t h e do o r o f t h e r e f r ige ra t o r c o m p a r t m e n t ope n
.
2 ) S e t t he T e m p . C o n t ro l K n ob in t he r e f r i ge r a t o r c o m p a r t m en t t o t h e cente
r po s i t i on .
3 ) K e e p t h e d o or o pe n a n d s up p l y p o we r s o u rc e .
2 . N o rm a l O p e r a t i o n
1 ) A p pr o x i m a t e l y 3 sec o n d s a f t er p o w er s uppl y , t he r e la y o n t h e P W B will b e t u r ne d O N a n d t h e d e f r o s t he a t e r will b e e le c t r i f i e d f o r 5 s e co n ds .
2 ) A ft e r 5 s e c ond s , i f t he t e m p er a t u r e o f De f - t h e r m i s t o r r e aches h i g h e n ou gh (o v e r 1 0 ° C ) and j udg e d a s d e f ro s t i ng c o m pl e t i o n , t h e c o m p r e s s or will be
wait 5 seconds before r un s f o r 5 m i nu t e s a nd t h e n r e t u r n s t o t h e no r m al c o n t r o
O n t h e o t h e r ha n d , i f t h e t e m p er a t u r e o f De f - t h e rm i s t o r i s s t ill l o w (u nd er 1 0 ° C) , t he de f r o s t hea t e r w ill b e e l e c t r i f ie d u n t il t he t e m p e r a t u r e o f D e f t h e r m i s t or r e ac h e s t he s p e c i f i e d t e m per a t u r e o r h i g he r .
A ft e r c o m p l e t i on o f e l e c t r i f ic a t i on , t h e co m p ress o r r u n s f o r 5 m i nu t e s and t hen r e t u r n s t o t h e no r m a l c o n t
r o l .
* I n t he ca s e t h a t a n y a b no rm ali t y in Do or Swi t c h , V o l u m e , R - t h er m i s t or o r D e f - t her m i s t o r , or t h e T e m p . C o n t ro l K no b i s n o t i n t h e po s i t i o n c o rr e -
sp ond i ng t o t he v al ue o f t he ra t i n g v ol t age s e t t l e d t o t h e P W B i t se l f , t h i s m o d e will n o t be en t er e d n o r t he d e f r o s t h e a t e r is e l e c t r i f ied .
(Center)
CHAPTER 6. FAILURE DIAGNOSIS
[1] OUTLINE OF CONTROL
[2] CHECK MODE OF DEFROST HEATER (Forced Defrosting)
[3] RE-SETTING OF MICROCOMPUTER AT POWER FAILURE
SJ-C19SS/C20XX
6 – 2
C h e c k b y t h e f o ll o wi n g pro c e d ur e ;
1 . D i s c on n e c t pow er s upp l y a nd c h e c k t h e f o l l o wing p o i n t .
• I s t he r e an y f a ilu r e p or t i o n in i n s e r t i ng co n n e c t o r s ?
2 . De t a c h t h e P W B a nd c h e c k t h e app e a r a nc e .
• I s t her e a n y b u rn i ng o r ab n o r ma l da m ag e ?
3 . Check t h e co n d i t io n s o f t he f u s e a nd t h e v a r i s t o r . ( F u se an d v a r i s t o r a r e l o c a t e d a t t he pos i t i on i n t he f i gure . )
• M e l t i n g i n t h e f use c an n o t b e c h e c ke d v i su all y ( a s t h e sa f e r o n e t h an t r a ns p a r e n t g l ass t u be i s u s ed) . B e s u re t o de t a c h t h e c o nn ec t o r “CN1 ”
be f ore mea s u r i n g t h e
r e s i s t a nce b e t w een t h e b o t h e n d s o f t h e f us e by t h e t e s t e r .
• N e x t , m e a s ur e t h e r e s i s t a n c e v a
l u e b e t we e n t h e b o t h l ea ds o f t h e v ar is t o r .
4 . Check wh e t he r t h e t e m p er a t ur e ( r esis t a n c e v a l u e ) s h o w n by R - t herm i s t or i s c o rr e c t or n o t . ( Re f er t o t h e t a b l e b el o w . )
• D e t a c h t h e c on ne c t o r “ CN3 ” o n t h e P W B a n d me a s ur e t h e r e s is t an c e va lu e be t w e e n 2 a n d 4 p i n s .
5 . Check wh e t her t h e t e m pe ra t u r e ( r e s is t a n c e v a lue ) s h o w n by D e f - t h e r m i s t or i s co r r ec t o r no t . ( Re f e r t o t h e t ab le b e l o w . )
• D e t a ch t he c o nn e c t o r “ CN 2 ” o n t he P W B a n d m e a s ur e t he r e s is t a nc e v a lu e be t w ee n
1 an d 2 p i ns .
V a r i s t o r →
No r m a l ( s e v e r al hu n d re d s Ω ~ s e v er al K Ω e g a m a D )
F u s e ↓
M e l t i n g
F l o w o f e x c e ss i v e c u r r e n t i s co n s i dera bl e f o r so m e r e a s on s .
C h ec k f o r a n y p o r t i on t o c a u s e s hor t c i r c u i t s e s pe c i all y
o n t h e p r i m a r y c i r c u i t .
T here is a pos sibili t y o f e x c e s s iv e v o l t a ge a p p l ie d f r om o u t sid e w i t h t he f a c t o r su c h a s t hu n d e r e t c . W h e n r e p e a t e d
wi t h a f ac t or o t h er t h a n t h u n de r , t her e m i gh t b e t h e a p p a r a t u s ne a r by g e n era t in g n o i s e s .
C o nd uc t i o n
F u s e
a n d va r i s t o r a r e n o r m a l .
Po s s ib i li t y t o b e ca u s e d b y e x c e s s i v e c u rr e n t o r vol t a g e
ne a r t he powe r s u p pl y i s lo w . P r o c eed t o t h e n e x t c he c k
i t e m .
—
V a r i s t o r
F1(Fuse 8A)
F2(Fuse 1A)
CN3
CN2
CN1
[4] DIAGNOSIS METHOD OF FAILURE
SJ-C19SS/C20XX
6 – 3
C o n v ers i o n T ab l e be t we en R - t h e rm i s t o r and D e f - t he r m i s t o r T e m p e r a t ur e a nd Re s i s t a n c e V alu e
T e m p erat u r e
( ° C )
R es i s t a n ce V a lu e
(k Ω )
T e m p e rat u r e
( ° C )
R es i s t a n c e V a l u e
(k Ω )
T e m p era t u r e
( ° C )
R e s i s t a n c e V a l u e
( k Ω )
- 2 5 26 . 1 - 1 1 1 1 . 4 9 3 5 . 5
- 2 4 24 . 5 4 -1 0 10 . 8 8 4 5 . 2 3
- 2 3 23 . 0 8 - 9 1 0 . 3 5 4 . 9 8
- 2 2 21 . 7 2 - 8 9 . 7 5 6 4 . 7 4
- 2 1 20 . 4 6 - 7 9 . 2 4 7 4 . 5 2
- 2 0 19 . 2 7 - 6 8 . 7 6 8 4 . 3
- 1 9 18 . 1 6 - 5 8 . 3 9 4 . 1
- 1 8 17 . 1 3 - 4 7 . 8 7 1 0 3 . 9 1
- 1 7 1 6 . 1 6 - 3 7 . 4 7 1 1 3 . 7 3
- 1 6 1 5 . 2 5 - 2 7 . 0 9 1 2 3 . 5 6
- 1 5 14 . 4 - 1 6 . 7 4 1 3 3 . 4
- 1 4 13 . 6 0 6 . 4 1 4 3 . 2 4
- 1 3 12 . 8 5 1 6 . 0 8 1 5 3 . 1
- 1 2 12 . 1 5 2 5
. 7 8
[5] CONVERSION TABLE
SJ-C19SS/C20XX
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