Sharp SJ-PT51R-HS, SJ-PT55R-HS, SJ-T55R-SL, SJ-T51R-SL Service Manual

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DESTINATION F

Refer to "HFC-134a COOLING UNIT" Service Manual for handling this refrigerant.

Refrigerant; HFC-134a

SJ-PT55R-HS

SERVICE MANUAL

No.SY746SE55CRYFT

Refrigerator-freezer

MODELS

CONTENTS

CHAPTER 1. SPECIFICATION

CHAPTER 2. DESIGNATION OF VARIOUS PARTS

[1] EXTERNAL DESCRIPTION........................... 2-1

[2] CONSTRUCTIONS ........................................ 2-3

CHAPTER 3. DIMENSIONS

[1] OUTER DIMENSIONS AND

CLEARANCE ................................................. 3-1

[2] INNER DIMENSIONS .................................... 3-3

CHAPTER 4. LIST OF ELECTRICAL PARTS

[1] SJ-PT51R/PT55R .......................................... 4-1

[2] SJ-T51R/T55R ............................................... 4-1

CHAPTER 5. WIRING DIAGRAM

[1] WIRING DIAGRAM ........................................ 5-1

[2] ELECTRIC ACCESSORIES LAYOUT ........... 5-2

[3] CIRCUIT DIAGRAM....................................... 5-4

SJ-PT51R-HS
SJ-PT55R-HS
SJ-T51R-SL
SJ-T55R-SL

[5] CONVERSION TABLE BETWEEN TEM-

PERATURE AND RESISTANCE VALUE........6-3

CHAPTER 7. SELF-DIAGNOSIS MODE (Only for SJ­PT51R/PT55R)

CHAPTER 8. MODE FOR DISPLAY (Only for SJ­PT51R/PT55R)

CHAPTER 9. ASSEMBLING PROCEDURES OF
MAIN PARTS AND CAUTIONS

[1] FAN LOUVER AND E.V COVER ASSEM-

BLY ................................................................9-1

[2] R CONTOROL COVER ASSEMBLY (SJ-

PT51R/PT55R) ..............................................9-3

[3] R CONTOROL COVER ASSEMBLY (SJ-

T51R/T55R)...................................................9-5

[4] R SHOWER DUCT ASSEMBLY....................9-7

[5] DEFROST HEATER ASSEMBLY..................9-8

CHAPTER 6. FAILURE DIAGNOSIS

[1] OUTLINE OF CONTROL............................... 6-1

[2] WHEN THE DEFROSTING FAILURE IS

DOUBTFUL(Only for SJ-PT51R/PT55R)........ 6-1

[3] RE-SETTING OF MICROCOMPUTER AT

POWER FAILURE.......................................... 6-1

[4] DIAGNOSIS METHOD OF FAILURE

AROUND PWB .............................................. 6-2

CHAPTER 10. COOLING UNIT

[1] COOLING UNIT...........................................10-1

[2] LOCATION ..................................................10-2

Parts Guide

This document has been published to be used for
after sales service only.
The contents are subject to change without notice.

SJPT55RHS

1 – 1

SJPT55RHS

Service Manual

CHAPTER 1. SPECIFICATION

Items SJ-PT51R SJ-T51R SJ-PT55R SJ-T55R

Type 2-Door
Outer dimensions Height 1670mm(65.7") 1770mm(69.7")

Width 800mm(31.5") 800mm(31.5")
Depth 720mm(28.3") 720mm(28.3")

Rated storage volume
(Rated volume)

Total 514liter(18.1cu.ft) 555liter(19.6cu.ft)
Freezer 139liter(4.8cu.ft) 139liter(4.9cu.ft)
Refrigerator 375liter(13.3cu.ft) 416liter(14.7cu.ft)

Defrosting System Heater system

Start Automatic

Finish Automatic
Temperature control Automatic (Adjustable)
No-frost freezer Yes
Interior lamp Freezer 1 (LED) — 1 (LED) —

Refrigerator 1 (LED) 1 1 (LED) 1
Evaporating pan 1 (unremovable)
Freezer Compartment F-shelf 1

F-shelf S 1 — 1 —

Ice cube maker Twin ice cube maker

Ice storage box 1

F door pocket ass'y 1

RF door pocket 1
Refrigerator Compartment Fresh case 1

Fresh door 1

R glass shelf ass'y 1 2 1 2

R glass shelf SF ass'y 1 — 1 —

R glass shelf SB ass'y 1 — 1 —

V glass shelf ass'y 1

Vegetable case 2

Egg tray 2 1 2 1

R door pocket 1

R door cover 1 — 1 —

RF door pocket 1

Utility pocket 2

Utility pocket L — 1

Bottle pocket 1

Tube stand 2 1 2 1
Deodorizing unit (Honeycomb type) 2 1 2 1
Door opening side Changeable*1 — Changeable*1 —

*1 To modify the door, REFRIGERATOR HINGE KITS (SJ-L55CRD) will be required.
All modification work should be carried out by a competent person.

RATING
Items SJ-PT51R SJ-T51R SJ-PT55R SJ-T55R
Rated voltage (V~) 110
Rated frequency (Hz) 60
Climate class ST
Rated input (W) 146
Rated input of heating systems (W) 146
Defrosting input (W) 146
Refrigerant (Charging quantity) [Non-flammable] HFC-134a(110g) HFC-134a(110g) HFC-134a(110g) HFC-134a(110g)
Insulation blowing gas [Flammable] Cyclo pentane (HC)
Net Weight (kg) 80 77 82 79

PLUG TYPE
Plug cord 2 pin
Plug type A-1
Destination mark F
COLOR
Items -HS/SL
Outside color Silver
Inside color White

SJPT55RHS

2 – 1

SJPT55RHS

Service Manual

CHAPTER 2. DESIGNATION OF VARIOUS PARTS

[1] EXTERNAL DESCRIPTION

The names in parenthesis “[ ]” are the denominations used in the REPLACEMENT PARTS LIST.

1. SJ-PT51R,PT55R

1. Freezer LED light [LED lamp]

2. Freezer shelf [F-shelf]

3. Movable shelf [F-shelf s]

4. Ice cube maker

5. Ice cube box [Ice storage box]

6. Control panel

7. Fresh case & door

8. Refrigerator LED light [LED Lamp]

9. Refrigerator shelf [R glass shelf ass'y]

10. Hybrid cooling panel (Aluminum panel)

11. Half shelf (1 pair)
[R galss shelf sf ass'y,

R glass shelf sb ass'y]

12. Fruit and vegetable shelf

[V glass shelf ass'y]

13. Fruit and vegetable crisper

[Vegetable case]

14. Adjustable feet & cover [Adjustable leg]

15. Magnetic door seal [Door packing]

16. Flexible pocket [F door pocket ass'y]

17. Door pocket [RF door pocket]

18. Refrigerator pocket & cover

19. Utility pocket

20. Egg holder [Egg tray]

21. Utility pocket (large)

(Only for SJ-PT55R)

22. Bottle pocket

23. Tube stand

1

2
3

4
5

6
7

8
9

10

11
12

13

14

15

16

17

18
19

20

21

23

22

17
15

SJPT55RHS

2 – 2

2. SJ-T51R,T55R

1. Freezer shelf [F-shelf]

2. Ice cube maker

3. Ice cube box [Ice storage box]

4. Fresh case & door

5. Refrigerator light [Lamp]

6. Freezer temp.conrol knob

7. Refrigerator temp.control knob

8. Refrigerator shelf [R glass shelf ass'y]

9. Hybrid cooling panel (Aluminum panel)

10. Fruit and vegetable shelf
[V glass shelf ass'y]

11. Fruit and vegetable crisper
[Vegetable case]

12. Adjustable feet & cover [Adjustable leg]

13. Magnetic door seal [Door packing]

14. Flexible pocket [F door pocket ass'y]

15. Door pocket [RF door pocket]

16. Refrigerator pocket

17. Utility pocket

18. Egg holder [Egg tray]

19. Utility pocket (large)

(Only for SJ-T55R)

20. Bottle pocket

21. Tube stand

17
18

13

15

16

12

1

2
3

4

5

8

9

10

11

6
7

13

14

15

19

20

21

SJPT55RHS

2 – 3

[2] CONSTRUCTIONS

Evaporator

Damper ass'y

Freezer
compartment

Refrigerator
compartment

Defrost heater

R-thermistor

Aluminum panel

F-thermistor

DEF-thermistor

Deodorizer

Deodorizer

F fan motor

Fuse ass'y

Ionizer-K

LED PWB ass'y

(Only for SJ-T51R/T55R)

(for SJ-T51R/T55R)

(Only for SJ-PT51R/PT55R)

(Only for SJ-PT51R/PT55R)

(Only for SJ-PT51R/PT55R)

(for SJ-PT51R/PT55R)

Mark : Cold air flow

Main PWB ass'y

Caster

Foot cover

Evaporating pan

Refrigerator temp. control knob

Lamp

LED lamp PWB L ass'y

R LED lamp PWB L ass'y

Freezer temp. control knob

Adjustable leg ass'y

Compressor
Starting relay
Overload relay(Protector)

SJPT55RHS

3 – 1

SJPT55RHS

Service Manual

CHAPTER 3. DIMENSIONS

[1] OUTER DIMENSIONS AND CLEARANCE

1. SJ-PT51R

2. SJ-PT55R

800

800

10

1400

540

135

720

728

1050

49950

60

1670

1500

1440

7

This model is Free standing type.

(Not built-in type.)

800

800

10

1400

540

135

720

728

1150

49950

60

1770

1500

1440

7

This model is Free standing type.

(Not built-in type.)

SJPT55RHS

3 – 2

3. SJ-T51R

4. SJ-T55R

800

800

10

1400

540

135

720

725

1076

524

60

1670

1500

1440

This model is Free standing type.

(Not built-in type.)

This model is Free standing type.

(Not built-in type.)

800

800

10

1400

540

135q

720

725

1176

524

60

1770

1500

1440

SJPT55RHS

3 – 3

[2] INNER DIMENSIONS

The dimensions between shelves can be changed by setting the shelves on the other rails.

1. SJ-PT51R

2. SJ-PT55R

65

82

135

640

326

660

74

660

74

665

45

10

328

53

328

53

320

250

85

82

268

74

85

74

122

528

653

653

635

648

275 275

265

265

660

74

660

17

265

122

122

120

345

356

165208155

132

17

98

72

235

265

89246244

45

53

63

128

195208

150 150

50

330

65

82

135

640

326

63

128

660

74

660

74

665

45

10

328

53

328

53

330

83

660

17

660

74

635

653

653

275 275

265

265

320

250

85

82

268

74

85

74

195208

265

122

53

122

120

120

45

89

83

142257360

132

17

98

72

150 150

356

345

165203

625

210

235

265

648

50

330

SJPT55RHS

3 – 4

3. SJ-T51R

4. SJ-T55R

82

135

640

660

74

660

74

665

45

10

328

53

328

53

320

250

85

82

268

74

85

74

122

528

653

653

635

648

275 275

265

265

660

74

660

17

265

122

122

120

345

356

165208155

132

17

98

72

235

265

89246244

45

53

195208

50

330

150 150

30 47

82

135

640

660

74

660

74

665

45

110

328

53

328

53

330

83

660

117

660

74

635

653

653

275 275

265

265

320

250

85

82

268

74

85

74

195208

265

122

53

122

120

120

45

89

83

142257360

132

117

98

72

150 150

356

345

165203

625

210

235

265

648

50

330

ڎ

ڎ

30 47

SJPT55RHS

4 – 1

SJPT55RHS

Service Manual

CHAPTER 4. LIST OF ELECTRICAL PARTS

[1] SJ-PT51R/PT55R

[2] SJ-T51R/T55R

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 — 110-120V 77.7Ω 160W at 115V
Fan motor FBA12J15VXD DC 15V —
F Door switch
R Door switch

D3D-211
D3D-211

250V 0.5A/125V 1A
250V 0.5A/125V 1A

3 Terminals lever type

3 Terminals lever type
F Lamp (LED)

R Lamp (LED)

DPWB-A135CBKZ
DPWB-A150CBKZ

DC 14.5V
DC 14.5V

75mA, white LED Lamp

125mA, white LED Lamp
LED Operation FPWB-A499CBKZ DC 14.5V Blue LED
Compressor EG85HLP 110-127V/60Hz Cooling capacity : 248W (50Hz)

Main coil : 1.75 Ω

Aux. coil : 6.65 Ω

(at 25 °C)

Starting Relay PTH7M4R7M 50/60 Hz 4.7 ±0.94Ω (at 25 °C)
Overload Relay(Protector) 4TM771RPBZZ-53 — Open/ Close : 130±5.0 / 61±9.0 °C
Main PWB FPWB-A511CBKZ 100-127V Control by MPU
Ionizer-K(Plasmacluster unit) FTRN-A014CBKZ DC 12V —

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 — 110-120V 77.7Ω 160W at 115V
Fan motor FBA12J15VXD DC 15V —
F Door switch

R Door switch

D3D-211
D3D-211

250V 0.5A/125V 1A
250V 0.5A/125V 1A

3 Terminals lever type

3 Terminals lever type
R Lamp — 120V 15W #187 Straight Terminal, Pitch 6
Compressor EG85HLP 110-127V/60Hz Cooling capacity : 248W (50Hz)

Main coil : 1.75 Ω

Aux. coil : 6.65 Ω

(at 25 °C)

Starting Relay PTH7M4R7M 50/60 Hz 4.7 ±0.94Ω (at 25 °C)
Overload Relay(Protector) 4TM771RPBZZ-53 — Open/ Close : 130±5.0 / 61±9.0 °C
Main PWB

VR PWB

FPWB-A513CBKZ
FPWB-A506CBKZ

100-127V
DC 5V

Control by MPU

—

Common

Aux. coil

Main coil

Common

Aux. coil

Main coil

SJPT55RHS

5 – 1

SJPT55RHS

Service Manual

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.

1. SJ-PT51R/PT55R

2. SJ-T51R/T55R

STARTING RELAY

COMPRESSOR

(G/Y)

FUSE

DEF-HEATER

LAMP

R-DOOR
SWITCH

F-DOOR
SWITCH

FAN MOT OR

(BL)

(SOURCE CORD)

(BR)

AC/DC

MAIN PWB

(GY)

PROTECTOR

(BR)

(W)

(BK)

(V)

(SB)

L

(SB)

(P)

(BL)

(GR)

(R)

FM

(BK)

(W)

(BR)

(BK)

(GR)

(P)

CONTROL
PWB

(BR)

(O)

(R)

(Y)

ELECTRICAL DAMPER

(SB)

(BL)

(P)

(O)

(W)

(GY)

(F-THERMISTOR)

(DEF-THERMISTOR)

(R-THERMISTOR)

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

SJPT55RHS

5 – 2

[2] ELECTRIC ACCESSORIES LAYOUT

1. SJ-PT51R/PT55R

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

SJPT55RHS

5 – 3

2. SJ-T51R/T55R

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

SJPT55RHS

5 – 4

[3] CIRCUIT DIAGRAM

1. Main PWB (SJ-PT51R / PT55R)

DC5V

AC160-288V

VM14.5V

1

2

4

3

RY2

FTR-F3(3 A)

1

3

5

Vin

G

Vou t

4

G

IC4

BP5225

C13

0.1u 25V

C15

0.1u/25V

D8

1N4005SG

(C73)

10000pF

(C75)

10000pF

R11

R14

R9

R7

1000p/50V

C16

1

2

34

PC1

PC123Y52

8.66kF

R8

C18

0.1u/50V

1k

20kF

1.8k

1.8kF

IC3

TA76431S

+

C14

100uF/10V

+

C74

1000uF/25V

D3

D1NL20U

D2

D1NL20U

R6

220pF/50V

Jumper

13kF

C9

C10

ZD1

HZ11C1

D4

D2S6M

R5R34

2200p/50V

C8

16kF

150pF/2kV

+

C11

100uF/25V

910k(1/2W)

(AX)

+

C7

R1

150u/450V

F1

2.5A/250V

VRS1

TNR10V471K

C1

L1

SS21V-050360(36mH)

C2

0.1u/275V

0.1u/275V

C21

0.1u

C20

0.1u

VDD

2

GND

3

VOUT

1

N.C.

4

N.C.

5

IC9

BD4842G

C19

0.01u

+5V

R83

10k

R93

1k

R86

1M

2

1

3

CF1

CST LS8M00G56-A0

RXD

P0032P0131P0230P0329P0428P0527P06

26

AN0

25

P3424P33

23

P1022P11

21

VREF

20

P1219P13

18

TXD0

17

P35

1

TXD1

2

RESET

3

XOUT

4

AVS S5XIN

6

AVC C

7

MODE

8

RXD1

9

P17

10

P3611P31

12

P5413P53

14

P16

15

RXD0

16

IC1

R5F21266SNFP

TXD

C23

0.1u

+C22

100u/25V

+(C24)

100u/25V

(RD)

(RD)

(R87)

10k

(R88)

10k

132

4

CN11

B4B-PH-KL

RESET

RESET

R89

10k

1

3

(CN4)

B2P3-VH

1

4

(CN3)

B2P4-VH-BL (LF)(SN)

123

CN8

B03B-XASK-1-A(LF)(SN)

1

CN10A

B7B-XASK-1-A(LF)(SN)

2

CN10B

B7B-XASK-1-A(LF)(SN)

3

CN10C

B7B-XASK-1-A(LF)(SN)

4

CN10D

B7B-XASK-1-A(LF)(SN)

5

CN10E

B7B-XASK-1-A(LF)(SN)

6

CN10F

B7B-XASK-1-A(LF)(SN)

7

CN10G

B7B-XASK-1-A(LF)(SN)

1

CN9A

B8B-XASK-1-A(LF)(SN)

2

CN9B

B8B-XASK-1-A(LF)(SN)

3

CN9C

B8B-XASK-1-A(LF)(SN)

4

CN9D

B8B-XASK-1-A(LF)(SN)

5

CN9E

B8B-XASK-1-A(LF)(SN)

6

CN9F

B8B-XASK-1-A(LF)(SN)

7

CN9G

B8B-XASK-1-A(LF)(SN)

8

CN9H

B8B-XASK-1-A(LF)(SN)

70m A /12V

F-TH

DEF-TH

R-TH

F-TH

DEF-TH

R58

C56 C5 7

0.1uF/ 25V 0.1uF/ 25V

R56 4.7k

R57 4.7k

16.9kF

R59

16.9kF

(C54)

0.01u

(C55)

0.01u

/50V

/50V

R-TH

R30

C37

0.1uF/ 25V

R29

4.7k

6.34kF

(C36)

0.01u

/50V

(R61)(R60)

R53

F_FA N_H

F-FM

F_FA N_L

VM14.5V

R48

F_FA N_ON

C50

R47

0.1uF/ 25V

4.7k

750(1/2W)

6.19kF

10kF

3.16kF

Q14

KTA1273-Y

Q15

KRC101S

(Q17)

KRA101S

Q16

KRA101S

I_detect

FFanmotor

VM14.5V

+

C42

100uF/25V

OUT110OUT29OUT38OUT4

7

IN12IN23IN34IN4

5

GND

6

VCC

1

IC6

LB1948M

D5

1N4005SG

DUMP_B1

DUMP_B2

DUMP_A1

DUMP_A2

D6

1N4005SG

D7

1N4005SG

PLASMA

Q7

KTC3205

ZD2

HZ12B2

VM14.5V

R32

C38

0.1uF/25V

470

Q8

KRA101S

Q9

KRC101S

I_detect

R31

470

910k(1/2W)

(AX)

R2

D16

1SR139-600

D17

D18

D19

F2

250V4A

1

2

3

D12

1SS133

D10

1SS133

Q2

KRC101S

Q3

DTD123ES

DEF_H

Comp

R16

43k

(1/2W)

(AX)

R15

43k

(1/2W)

(AX)

R26

4.7k
(1/10W)

D13

1SS133

132

4

PC2

PC123Y52

R12

4.7k

(1/10W)

R19

4.7k (1/10W)

+

C25

10uF/ 50V

1

2

3

RDoorSW

(R81)

10k

E8EmulatorConnector

Vcc

Mode

Reset

Vss

F Roomlamp

LED

TP13

(L3)

+

C12

100uF/25V

C31

TXD

RXD

DC5V

DC5V

R18

R17

R21

1k

R22

1k

2.7k

2.7k

Q5

KRA101S

Q6

KRC101S

TP1

Toroidal Core(ESD-R-3810Turns)

RDOORSW

FDOORSW

TP2

TP44

ForIsraelonly

TP11

RY1

FTR-H2AL

TP43

TP14 TP15

TP16

TP17

TP12

TP46

TP47

TP48

TP49

Film

Film

TP45

TP7

TP6

C76

10000pF

C77

10000pF

250V

TP9

TP8

TP18

TP20

VM14.5V

R20

1k

0.01u

TP25

TP28

TP29

TP30

TP31

TP19

TP36

TP37

TP41

TP40

I_me s

R46

DC5V

R44

R45

0.51

1k

R55

1W

1W

4.7k

D11

1SS133T

(AX)

(AX)

+

C78

1uF/50V

+

C49

100uF/10V

0.51

(C48)

0.1u

I_detect

(JMP 2)

OPEN

DC5V

R82

10k

TP26

C67

0.1u

+

C64

100u/25V

C66

0.1u

+C65

100u/25V

C69

0.1u

C68

0.1u

C70

0.1u

DC5V

DEF_H

Comp

I_me s

R-TH

DUMP_B1

DUMP_B2

DUMP_A1

DUMP_A2

F_FA N_H

F_FA N_L

F_FA N_ON

F-TH

DEF-TH

Ma in Control Board Ci rcuit Diagram

1.Ratingof reslstors without appointment are 1/10W, error 5%(J).

2.Ratingof capacitors without appointmentare 0.01u/50V,0.1u/50V.

3.Partswithparenthesesare not in use,but canbe inserted.

ZD3

STO3D-200

1SR139-600

1SR139-600

1SR139-600

TP35

TP34

(C17)

0.1u

TSL11 12RA-100M3R7-PF

Plasmacluster

PLASMA

HALL

GND

COIL

DC5VDC5V

DC5V

DC5V

DC5V

DC5V

DC5V DC5V

DC5V

DC5V

DC5V

DC5V

DC5V

65432

11108

9

TRNS1

EER28/5.95mH

Q10

2SB1237

R27

1k

R28

4.7k

Q1

KRC101S

F_Lam p

VM14.5V

+

(C79)

100uF/25V

(C27)

0.1u

GND

3

F/B

2

Vcc

4

Z/C

1

D

5

IC2

MR1712

1

CN1A

B3P(5-2,4)-VH(LF)(SN)

3

CN1B

B3P(5-2,4)-VH(LF)(SN)

5

CN1C

B3P(5-2,4)-VH(LF)(SN)

C4

SA1

RA-272M-C 6-F

C6

C5

4700pF

4700pF

4700pF

/250VAC

VRS2

TNR10V511K

1

Tab1 TP42098-21

TP3

1

CN5A

B6P(10-2,4,6,9)-VH(LF)(SN)

3

CN5B

B6P(10-2,4,6,9)-VH(LF)(SN)

5

CN5C

B6P(10-2,4,6,9)-VH(LF)(SN)

7

CN5D

B6P(10-2,4,6,9)-VH(LF)(SN)

8

CN5E

B6P(10-2,4,6,9)-VH(LF)(SN)

10

CN5F

B6P(10-2,4,6,9)-VH(LF)(SN)

J3

JumperJ3Jumper

1

2

4

3

(RY3)

FTR-F3(3 A)

(D15)

1SS133

(Q19)

KRC101S

R_Lamp

TP38

D9

1N4005SG

R10

43k

(1/2W)

(AX)

R14

43k

(1/2W)

(AX)

R23

4.7k
(1/10W)

D14

1SS133

1

3

2

4

PC3

PC123Y52

R24

4.7k
(1/10W)

R25

4.7k (1/10W)

+

C26

10uF/ 50V

F DoorSW

TP22

TP23 TP24

DC5V

1

2

CN2B2P2-VH(LF)(SN)

TP4

JMP1

Jumper

TP39

RDoorSWinput

FDoorSWinput

FRoomLamp(LED)

TH1

S8R2K10D315J

AX 1/4W

AX 1/4W

Jumper

R3

AX 1/4W

AX 1/4W

AX 1/4W

Jumper

R4

AX 1/4W

AX 1/4W

TP10

(C28)

1u/50V

R33

10k

TP21

DC12V

AX

(JMP 3)

OPEN

Q18

KRA101S

DC5V

(R62)

10kF

R52

10kF

(R51)

6.19kF

R50

3.16kF

F_FA N_M

AX 1/4W

AX 1/4W AX 1/4W

GTH1

C16X-41-3S

R35

DC5V

(C32)

0.1u/25V

R36

4.7k

10kF

TP33

TP32

DC12V

DC12V

DC12V

F_Lam p

R_Lamp

F_FA N_M

RDoorSW

F DoorSW

ENFORCEDEF

ENFORCEDEF

R91

10kF

(R90)

10kF

DC5V

TP27

132

4

(CN12)

B4B-PH-KL

RAM DataCheck

3216

D1

1N4005SG

TP42

Q11

2SB1237

R38

1k

R37

4.7k

Q4

KRC101S

VM14.5V

RRoomLamp(LED)

132

4

CN7

B04B-XASK-1-A( LF)(SN)

R Roomlamp

LED

R_Lam p

Rating AC220-240V 50/60Hz

50/60Hz

Panasonic

SJPT55RHS

5 – 5

2. Main PWB (SJ-T51R / T55R)

DC5V

D309

1N4005SG

AC160-288V

50/60Hz

14.5V

1

2

4

3

RY302

FTR-F3

(C328)

1u/50V

C315

0.1u/25V

D308

1N4005SG

(C373)

10000pF

(C375)

10000pF

R311

R314

R309

4700p/50V

C316

1

2

34

PC301

PC123Y52

8.66kF

R308

C318

0.1u/50V

1k

1.8k

1.8kF

IC303

TA76431S

+

C314

100uF/10V

+

C312

560uF/25V

D303

D1NL20U

D302

EG01C

R305

R306

0.01u/400V

10

C309

C308

D304

RL2Z

R304

220k

47pF/2kV

1/2W1.0

+

C311

22uF /50V

910k(1/2W)

(AX)

+

C307

R301

82u/450V

F301

2.5A/250V

VRS301

TNR10V471K

C301

L301

SS26V-070510(51mH)

C302

0.1u/275V0.1u/275V

C321

0.1u

C320

0.1u

VDD

2

GND

3

VOUT

1

N.C.

4

N.C.

5

IC309

BD4842G

C319

0.01u

R383

10k

R393

1k

(R386)

1M

2

1

3

(CF301)

CST LS8M00G56-A0

P0032P0131P0230P0329P0428P0527P06

26

AN0

25

P3424P33

23

P1022P11

21

VREF

20

P1219P13

18

TXD0

17

P35

1

TXD1

2

RESET

3

XOUT

4

AVS S5XIN

6

AVC C

7

MODE

8

RXD1

9

P17

10

P3611P31

12

P5413P53

14

P16

15

RXD0

16

IC301

R5F21266SNFP

C323

0.1u

+C322

100u/10V

+(C324)

100u/10V

(RD)

(RD)

R387

10k

R388

10k

132

4

CN311

B4B-PH-KS

RESET

RESET

R389

10k

1

4

(CN303)

B2P(4-2,3)VH(LF)(SN)

1

CN310A

B7B-XASK-1-A(LF)(SN)

2

CN310B

B7B-XASK-1-A(LF)(SN)

3

CN310C

B7B-XASK-1-A(LF)(SN)

4

CN310D

B7B-XASK-1-A(LF)(SN)

5

CN310E

B7B-XASK-1-A(LF)(SN)

6

CN310F

B7B-XASK-1-A(LF)(SN)

7

CN310G

B7B-XASK-1-A(LF)(SN)

F-TH

DEF-TH

R-TH

F-TH

DEF-TH

R358

C356 C357

0.1uF/ 25V 0.1uF/ 25V

R356 4.7k

R357 4.7k

16.9kF

R359

16.9kF

(C354)

0.01u

(C355 )

0.01u

/50V

/50V

R-TH

R330

C337

0.1uF/ 25V

R329

4.7k

6.34kF

(C336)

0.01u

/50V

R353

F_FA N_H

F-FM

F_FA N_L

14.5V

(R351)

F_FA N_M

6.19kF

10kF

(Q317)

KRA101S

Q316

KRA101S

FFanmotor

14.5V

+

C342

100uF/25V

OUT110OUT29OUT38OUT4

7

IN12IN23IN34IN4

5

GND

6

VCC

1

IC306

LB1948M

D305

1N4005SG

DUMP_B1

DUMP_B2

DUMP_A1

DUMP_A2

D306

1N4005SG

D307

1N4005SG

910k(1/2W)

(AX)

R302

D316

1N4005SG

D317

D318

D319

F302

250V4A

COM

NO

NC

D312

1SS133

D310

1SS133

Q302

KRC101S

Q303

DTD123ES

DEF_H

Comp

R316

43k

(1/2W)

(AX)

R315

43k

(1/2W)

(AX)

R326

4.7k
AX (1 /4W)

D313

1SS133

1

3

2

4

PC302

PC123Y52

R312

4.7k

(1/10W)

R313

4.7k (1/10W)

+

C325

10uF/50V

COM

NO

NC

DoorSW

132

4

(CN312)

B4B-PH-KS

(R381)

4.7k

E8EmulatorConnector

RAM DataCheck

Vcc

Mode

Reset

Vss

TP313

C310

0.01u/50V

(L303)

TP301

R DOORSW

FDOORSW

TP302

TP344

ForIsraelonly

TP311

RY301

FTR-H2AL012T-SN

TP343

TP314 TP315

TP312

TP346

TP347

TP348

TP349

Film

Film

TP345

TP307

TP306

C376

10000pF

C377

10000pF

250V

TP309

TP8

TP325

TP328

TP329

TP330

TP331

TP336

TP337

TP341

TP340

(JMP 30 3)

OPEN

DC5V

R382

10k

TP326

C367

0.1u

+C364

100u/25V

C366

0.1u

+C365

100u/25V

C369

0.1u

C368

0.1u

C370

0.1u

DC5V

Ma in Control Board Ci rcuit Diagram

1.Ratingof reslstors without appointment are1/10W, error 5%(J).

2.Ratingof capacitors without appointment are 0.01u/50V,0.1u/50V.

3.Partswithparenthesesare not in use,but canbe inserted.

1N4005SG

1N4005SG

1N4005SG

(C317)

0.1u

TSL1112RA-100M3R7-PF

Vcc

GND

Vs

DC5V

DC5V

DC5V

DC5V

DC5V

DC5V

DC5V DC5V

DC5V

DC5V

DC5V

DC5V

DC5V

D301

1N4005SG

Q318

KRA101S

DC5V

(R361)

6.19kF

R352

10kF

(R362)

10kF

R350

3.16kF

(R360)

3.16kF

1

CN309A

B10-XASK-1-A(LF)(SN)

2

CN309B

B10-XASK-1-A(LF)(SN)

3

CN309C

B10-XASK-1-A(LF)(SN)

4

CN309D

B10-XASK-1-A(LF)(SN)

5

CN309E

B10-XASK-1-A(LF)(SN)

6

CN309F

B10-XASK-1-A(LF)(SN)

7

CN309G

B10-XASK-1-A(LF)(SN)

8

CN309H

B10-XASK-1-A(LF)(SN)

9

CN309I

B10-XASK-1-A(LF)(SN)

10

CN309J

B10-XASK-1-A(LF)(SN)

R343

C335 C332

0.1uF/ 25V 0.1uF/25V

R340 4.7k

R342 4.7k

220k

R341

220k

TP338

TP339

DC5V

(C330)

0.1uF/ 25V

F_VR

R_VR

GTH301

C16X-41-3S

R320

DC5V

(C381)

0.1u

R319

4.7k

10kF

(C380)

0.01u

TP332TP333

G_Th

(BZ301)

PKM22E P

(R318)

2.7k

(Q319)

KRC101S

14.5V

Buzzer

R391

10k

C304

SA301

RA-272M-C6-F

C306

C305

4700pF

4700pF

4700pF

/250VAC

VRS302

TNR10V511K

1

Tab3 01

Rating AC 220-240V50/60Hz

DC12V

DC12V

DC12V

1

CN301A

B3P( 5 -2 ,4)-VH(LF)(SN)

3

CN301B

B3P( 5 -2 ,4)-VH(LF)(SN)

5

CN301C

B3P( 5 -2 ,4)-VH(LF)(SN)

TP42098-21

1

CN306A

B5P( 7 -4 ,6)-VH(LF)(SN)

2

CN306B

B5P( 7 -4 ,6)-VH(LF)(SN)

3

CN306C

B5P(7-4,6)-VH(LF)(SN)

5

CN306D

B5P(7-4,6)-VH(LF)(SN)

7

CN306E

B5P(7-4,6)-VH(LF)(SN)

1

CN305A

B5P(8-2,5,7)-VH(LF)(SN)

3

CN305B

B5P( 8 -2 ,5,7)-VH(LF)(SN)

4

CN305C

B5P( 8 -2 ,5,7)-VH(LF)(SN)

6

CN305D

B5P(8-2,5,7)-VH(LF)(SN)

8

CN305E

B5P(8-2,5,7)-VH(LF)(SN)

1

2

4

3

(RY303)

FTR-F3

(D314)

1SS133

(Q321)

KRC101S

R_Lam p

DC12V

TP304

JMP301

Jumper

1

2

4

3

(RY304)

FTR-F3

(D315)

1SS133

(Q322)

KRC101S

DC12V

TP305

(JMP302)

OPEN

F_Lam p

TH301

S8R2K10D315J

D

8

D

7

VCC

5

S/OCP

1

FM/SS

2

GND

3

FB/CC/OLP

4

IC302

STR-A6251M

1W

(C327)

0.1u

AX 1/4W

Jumper

R307

AX 1/4W

1/4W

1/4W

TP9

C313

0.1u25V

3216

1

2

3

I

G

O

TP303

(D320)1N4005SG

1/4W

RK09K1130(10k)

Door SW input

Compressor

F-TH

DEF-TH

R-TH

F_FA N_H

F_FA N_L

F_FA N_M

DUMP_B1

DUMP_B2

DUMP_A1

DUMP_A2

F_VR

R_VR

G_Th

Buzzer

DEF_H

Comp

DoorSW

R_Lamp

ENFORCE_DEF

ENFORCE_DEF

F_Lam p

TP10

DC5V

TP334

R roomlamp(Bulb)

Defrost heater

F roomlamp(Bulb)

D3D-211

D3D-211

(Heat sink)

OSH-1025-SP2

54312

9106

7

TRANS301

123

Panasonic

2345

PH

2

1/2W1.2

2

R5F21265SNFP

(470uF/25V)

TP317

TP318

TP319

TP316

R395

DC5V

(R394)

10k

10k

SJPT55RHS

5 – 6

3. LED PWB (Only for SJ-PT51R / PT55R)

1 2

SSWW110011

SS

KK

QQ

NN

AADD

DD

001100

11 2

SS

WW110022

SS

KK

QQ

NN

AADD

DD

001100

11

2

SSWW110033

SSKKQQNNAADDDD001100

V

out

1

GND

2

Vin

3

IC102

KIA7

8

S05P

VL

T

X

D

,R

X

D

GND

+C1

02

47u/

2

5V

C1

01

0.

1

u/50V

C107

0

.1u

TP

101

(D101)

1N4005E

+

C103

47u/10V

+

5

V

VL

TP104

(R

D

)

(2

1

25

)

T

P

10

3

(

1608)

(RD)

T

P

10

2

RR11550

22..77kk

BZ101

PKM 1 3EPY

4kHz

+5

V

RR115522

11kk

RR11

5533

11kk

C1

10

0.

1u

V

DD

2

GND

3

VOUT

1

N.C.

4

N.C.

5

IC1

0

3

BD4842

G

C1

05

0.0

1u

+

5V

d3

d2

C1150.1u

C108

0.1u

(C

140

)

0.

1

u

R130

10kF

R131

4.7k

C1410.01u

GT

H

1

01

C

16X

-4

1-3S

+

5V

T

P

115

TP

116

Q

14

1

KRC101S

R14

2

2.2

k

+5V

RR114477

1k

R1

45

1k

C

132

0.01u

TP1

09

TP

11

0

R143

1

k

R14

4

1k

(R146)

1k

C13

1

0.0

1u

TP114

R1

41

2

..2kk

Q142

KRA101S

+5V

R170

2

.7

k

(C170)

0.01u

+5V +5V

R171

2.7

k

(C171)

0.0

1u

+

5V

+5V

S

W1

R172

2

.7k

(C172)

0.01u

+5V +5V

S

W

2

SW3

R162

820

R1

65

820

R164

820

R163

8

2

0

R160

820

R1

61

820

TT

PP

110055

TTPP110066

TT

PP

110077

TP

112

TP1

11

RXD0

R10110

k

+5V

R1

0

3

1

k

R

10

8

1

M

2

1

3

CF101

CS

T

LS

8M

00G56-A0

RXD0

TXD0

Q1

0

2

2SB1237

Q103

2SB1237

R166

820

VL VL

Q152

KRC1

01

S

Q153KRC1

01

S

SW2

S

W3

d3

d2

a

bcd

e

f

g

BZ

Q150

KRC101S

VL

Q155

KRC105S

R167

820

a

d1

DP

BZ

R156

4

.

7k

R157

4.7k

P00

32

P

0

1

31

P0230P03

29

P04

2288

P

05

2277

P06

2266

AN

0

2

5

P

34

24

P

33

23

P1022P11

21

VREF

20

P

12

19

P

13

18

TXD0

17

P

35

TXD

1

22

RESET

3

X

OU

T

4

AV

S

S

5

XIN

6

AVCC

7

MODE

88

R

X

D

1

99

P17

10

P36

P31

12

P54P53

11

11113

P

16

15

RXD0

16

IC101

R5F

2126

6S

N

F

P

11//

44

WW

11//

22WW

aa

1111

bb

7

cc

4

dd

2

ee

1

ff

10

gg

5

DD..PP11

3

DDiigg..11

1122

DDiigg..22

99

DDiigg..33

88

......

a

fbb

g

ec

d

DD..

PP..

LLEEDD110011

LLTTCC--556611AC BACB

123

CN101

S

03B-

P

A

S

K

-

2

C1110.

1u

+(C109)

100

u/

25V

+

(

C112)

1

00u/25V

(RD)

(RD)

(R195)

10k

(R194)

10

k

+5V

+

5

V

+5V

132

4

((CCNN110022))

B4B-PH-KL

+5V

RESET

RESET

1 2

SSWW110044

SSKK

QQ

NNAADDDD00

11

00

R173

2.7k

(C173)

0

..00

11uu

++55VV ++55VV

SW4

TP108

Q101

2SB1237

VL

R155

4.

7k

Q156

KRC105SbQ

15

7

KRC

1

05S

c

Q158KRC105SdQ159

KRC105SeQ160

KRC105SfQ1

6

1

KRC

10

5S

g

Q16

2

K

RC

105

S

DP

1/2W

1/2W

1/2W

1/2W

1/2W

1/2W

1/2W

R151

1k

d1

Q151

KRC101S

SW1

SW4

A

_

D

A

_D

TTPP112200

T

P

121

T

P

122

TP123

R178

10k

+5V

RR11

7744

44

..77kk

RR11

7755

44..77kk

RR11

7766

44

..77kk

R1774.7k

L

L

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2

Q

16

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2

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R168

820

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102

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TP125

Q164

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C10

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R169

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10

3

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2

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Flash writing

SW3

SW4

SW2

SW1

SJPT55RHS

6 – 1

SJPT55RHS

Service Manual

CHAPTER 6. 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)

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 when the outside temperature is high.

[2] WHEN THE DEFROSTING FAILURE IS DOUBTFUL(Only for SJ-PT51R/PT55R)

Execute the Self-Diagnosis Mode. (Refer to the Chapter “SELF-DIAGNOSIS MODE”)

• In case the diagnosis result is “ 03” (Def-thermistor system defect), follow up the flowchart of 03. (In case of any abnormity in the Def-ther­mistor, defrosting will not be made for safety reasons.)

• In case the diagnosis result is “ 07” (Defrost defect), follow up the flowchart of 07.

(This diagnosis result will be displayed when defrosting is made for 120 minutes, the maximum time length. In this case, the defect of PWB itself
and also the breakage of heater and heater circuit (melt down of current fuse and temperature fuse) are considerable.)

[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 difinite power off condition ,approximately 30 seconds is necessary.)

• When the power is re-supplied, the normal cooling will be resumed.

• The temperature set by user is not maintained if a power failure occurred.(Only for SJ-PT51R, PT55R)

(Defrosting also is not maintained.)

• When the self diagnosis is made, each mode and setting are resumed to the initial condition.(Only for SJ-PT51R, PT55R)