Sharp SJ-A20S-SL, SJ-B21S-SL, SJ-A24S-SL, SJ-B25S-SL, SJ-A28S-SL Service Manual

...

Page 1

SERVICE MANUAL

SJ-A20S/B21S/A24S/B25S/A28A/B27S/A31S/A34S-SL

No.S9902SJ22FTVTT

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

CONTENTS

Refrigerator-freezer

MODELS

SJ-A20S-SL SJ-B21S-SL SJ-A24S-SL SJ-B25S-SL SJ-A28S-SL SJ-B27S-SL SJ-A31S-SL SJ-A34S-SL

DESTINATION T

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

efrigerant; HFC-134a

SJ-A28S-SL SJ-B27S-SL

CHAPTER 1. SPECIFICATION

CHAPTER 2. DESIGNATION OF VARIOUS PARTS

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

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

CHAPTER 3. DIMENTIONS [1] OUTER DIMENTIONS AND

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

[2] INNER DIMENTIONS .................................... 3-4

CHAPTER 4. LIST OF ELECTRICAL 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

[3] RE-SETTING OF MICROCOMPUTER AT

POWER FAILUR

E.......................................... 6-2

[4] D

IAGNOSIS 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 [1] F-LOUVER ASS'Y (SJ-A20S/B21S/A24S/ B25S/A28S/B27S)

..........................................8-1

[3] R CONTROL COV. ASS'Y.............................8-7

[4] HOW TO REPLACE THE LAMP ...................8-9

[5] DEFROST HEATER ......................................8-10

CHAPTER 9. COOLING UNIT

[1] COOLING UNIT.............................................9-1

[2] LOCATION ............................

........................9-2

Parts Guide

[

2] F-LOUVER ASS'Y (SJ-A31S/A34S)...............8-4

[1] SJ-A20S/B21S/A24S/B25S/A28S/B27S........ 2-1

[2] SJ- A 31S/A3 4 S .......................................... 2-2

[3] PRECAUTION FOR USING LEAD-FREE

SOLDER........................................................5-3

[2] CHECK MODE OF DEFROST HEATER

(Forced Defrosting) ........................................ 6-1

SJ-F230G

Page 2

1 – 1

SJD34NSLG

Service Manual

CHAPTER 1. SPECIFICATION

RATING

PLUG TYPE

Plug cord 2 pin Plug type Destination mark T

COLOR Items -SL Outside color Silver Inside color White

SJ-A20S SJ-B21S

SJ-A24S SJ-B25S

SJ-A28S SJ-B27S

Outer dimensions Height 1253mm(49.3") 1389mm(54.7") 1491mm(58.7") Width 545mm(21.5") 545mm(21.5") 545mm(21.5")

Depth 620mm(24.4") 620mm(24.4") 620mm(24.4")

184liter(6.5cu.ft) 212liter(7.5cu.ft) 227liter(8.0cu.ft)

Defrosting System

Start Finish

Freezer Compartment F-shelf

Ice cube maker Ice storage box Door pocket 2

Refrigerator Compartment Fresh case

R shelf (plastic) 1 2 R shelf ass'y (glass) - - 2 V shelf (plastic) 1 1 V shelf ass'y (glas

s) - - 1 Vegetable case Egg pocket Small pocket Door pocket B Bottle pocket Door pocket

Deodorizing unit

Items Type

No-frost freezer

Interior lamp

Evaporating pan

Rate storage volume (Rated volume)

Temperature control

Automatic (Adjustable)

Yes

2-Door

Heater system

Automatic

Twin ice cube maker

1 (Honeycomb type)

SJ-A20S/B21S/A24S/B25S/A28S/B27S

Stand Yes

SJ-A20S SJ-B21S

SJ-A24S SJ-B24S

SJ-A28S SJ-B27S

Rated voltage (V~) Rated frequency (Hz) Climate class Rated power input (W) Rated current (A) Current input (A) Defrosting input (A) Defrosting power (W)

HFC-134a(75 g) HFC-134a(75 g) HFC-134a(95 g)

Net Weight (kg) 39 41 45

0.85

0.58

220

Insulation blowing gas [Flammable]

Items Refrigerant (Charging quantity) [Non-flammable]

Cyclo pentane (HC)

128

0.58

100

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1 – 2

SJD34NSLG

Service Manual

RATING

PLUG TYPE

Plug cord 2 pin Plug type Destination mark T

COLOR Items -SL Outside color Silver Inside color White

SJ-A31S SJ-A34S

Outer dimensions Height 1580mm(62.2") 1700mm(66.9") Width 600mm(23.6") 600mm(23.6")

Depth 631mm(24.8") 631mm(24.8")

292liter(10.3cu.ft) 313liter(11.1cu.ft)

Defrosting System

Start Finish

Freezer Compartment F-shelf

Ice cube maker Ice storage box Door pocket

Refrigerator Compartment Fresh case

R shelf ass'y (glass) 2 3 V shelf ass'y (glass) Vegetable case Egg pocket Egg tray Small pocket 1 2 Door pocket B Bottle pocket D

oor pocket

1 (Ho

neycomb type)

2-Door

Automatic

Temperature control

Automatic

Twin ice cube maker

Deodorizing unit

Items

Type

No-frost freezer

Interior lamp

Evaporating pan

Rated storage volume (Rated volume)

Heater system

Automatic (Adjustable)

Yes

SJ-A31S/A34S

SJ-A31S SJ-A34S

Rated voltage (V~) Rated frequency (Hz) Climate class Rated power input (W) Rated current (A) Current input (A) Defrosting current (A) Defrosting power (W)

Cyclo pentane (HC)

Net Weight (kg) 52 54

0.95

0.58

Insulation blowing gas [Flammable]

Items

Refrigerant (Charging quantity) [Non-flammable]

HFC-134a(100 g)

220

109

0.58

128

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2 – 1

SJ26NSL

Service Manual

CHAPTER 2. DESIGNATION OFVARIOUS PARTS

[1] EXTERNAL DESCRIPTION

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

1. Freezer shelf

[F-shelf]

2. Freezer temp.control knob

3. Ice cube maker

4. Ice cube box

[Ice storage box]

5. Fresh room

6. Refrigerator temp.control knob

7. Light

[Lamp]

8. Refrigerator shelf

[ R-shelf (plastic) : SJ-A20S/B21S; 1 pc. SJ-A24S/B25S; 2 pcs. R-shelf ass’y (glass) :SJ-A28S/B27S/A31S; 2 pcs, SJ-A34S; 3 pcs.]

9. Vegetable shelf

10. Vegetable crisper

[Vegetable case]

11. Adjustable foot

[Adjustable leg]

12. Magnetic door seal

[Door packing]

13. Door pocket

16. Light switch

15. Egg pocket

(SJ-A20S/B21S/A24S/B25S; 2 pockets,

SJ-A28S/B27S/A31S/A34S; 3 pockets)

17. Small pocket (right)

[Small pocket]

18. Small pocket (left) [Door pocket B]

19. Bottle pocket

(SJ-A24S/B25S/A28S/B27S/A31S; 1 pocket, SJ-A34S; 2 pockets)

14. Egg holder [Egg tray]

(SJ-A24S/B25S/A28S/B27S/A31S/A34S)

(Only SJ-A31S/A34S)

[ R-shelf (plastic) : SJ-A20S/B21S/A24S/B25S, R-shelf (glass) : SJ-A28S/B27S/A31S/A34S ]

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2 – 2

[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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3 – 1

SJD26LVSL

CHAPTER 3. DIMENTIONS

[1] OUTER DIMENTIONS AND CLEARANCE

1. SJ-A20S/B21S

2. SJ-A24S/B25S

(Unit:mm)

610

628.5

1085

545

1145

365

970

545

443.5

757.5

1253

(Unit:mm)

610

628.5

1085

545

1145

365

970

545

443.5

893.5

1389

6060

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3 – 2

3. SJ-A28S/B27S

(Unit:mm)

610

628.5

1085

545

1145

365

970

545

515.5

923.5

1491

60 60

4. SJ-A31S

600

541.5

986.5

1065

1161

1221

405

631

1580

649.5

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3 – 3

5. SJ-A34S

600

541.51106.5

631

1161

600

1221

405

1065

1700

649.5

[2] INNER DIMENTIONS

1. SJ-A20S/B21S

380

390

253

321

146

149

300

107

196

391

138

417

363

208

371

366

137

208

204

154

103

250

143

107

120

211

292

340

(Unit:mm)

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3 – 4

2. SJ-A24S/B25S

(Unit:mm)

196

380

390

391

138

169

417

363

208

180

371

366

107

137

208

253

271

214

187

434

204

154

103

250

143

107

120

211

292

340

417

292

154

3. SJ-A28S/B27S

391

3355

138

390

169

417

363

208

137

208

253

271

214

103

250

143

107

202

464

144123184

196

120

180

107

371

366

292

211

(Unit:mm)

292

254

204

154

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3 – 5

4. SJ-A31S

5. SJ-A34S

430

3355

138

445

472

411

217

152

217

259

330

147

170

210

530

217

111

380

107

231

254

204

154

217

120

180

237

10767

430

416

231

312

430

3355

138

445

480

472

411

217

152

217

533282

147

170

160

650

155

111

380

107

231

254

204

154

217

120

180

237

5930

107

430

416

231

312

150

155

237

155

312

472

312

170

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4 – 1

SJ26NSL

CHAPTER 4. LIST OF ELECTRICAL PARTS

ITEMS TYPE NAME RATING SPECIFICATIONS

R Thermistor Defrost Thermistor

― ―

DC 5V DC 5V

R0 = 6.4 kΩ, B(0) = 3811 R0 = 6.4 kΩ, B(0) = 3811

Thermo. fuse SF70E 250V 10A Working temp. : 70 °C

Defrost heater ― 220 - 240V 378Ω 140W at 230V

Fan motor (A20S/B21S/A24S/B25S/ A28S/B27S)

(A31S/A34S)

3R00121

3R00101B

AC 200-240V, 50Hz

AC 220-240V,50Hz AC 220-230V,60Hz

Door switch SDKNA20101

250V 0.25A 125V 0.5 A

3 Terminals push-botton type

R Lamp ― 240V 15W #187 Straight Terminal, Pitch 6

Compressor (A20S/B21S/A24S/B25S)

(A28S/B27S)

(A31S/A34S)

FL0845-ST

FL1152-SZ

FL1257-SW

220-240V/50Hz

Cooling capacity : 106 W (50Hz) Main coil : 23.8 Ω Aux. coil : 29.7 Ω (at 75 °C)

Cooling capacity : 136 W (50Hz) Main coil : 23.8 Ω Aux. coil : 42.4 Ω (at 75 °C)

Cooling capacity : 170 W (50Hz) Main coil : 18.4 Ω Aux. coil : 31.5 Ω (at 75 °C)

Starting Relay PEN0SBT 50/60 Hz 22 ± 4.4Ω (at 25 °C)

Overload Relay

(Protector)

(A20S/B21S/A24S/B25S)

(A28S/B27S)

5TM158RFBYY-53

5TM149NFBYY-53

5TM189RFBYY-53

―

Open/ Close : 120 ± 0.5 / 61 ± 9.0°C

Open/ Close : 130 ± 0.5 / 61 ± 9.0°C

Running capacitor (A20S/B21S/A24S/B25S/ A28S/B27S) (A31S/A34S)

RC-EZA237CBZZ

RC-EZA249CBZZ

400V 3

400V 4

Main PWB FPWB-A667CBKZ 220-240V ―

220-240V/50Hz

―

Common

Aux. coil

Main coil

(A31S/A34S)

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Page 12

5 – 1

SJD26LVSL

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.

(BL)

STARTING RELAY

COMPRESSOR

RUNNING CAPACITOR

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5 – 2

[2] ELECTRIC ACCESSORIES LAYOUT

F-LOUVER ASS’Y

FAN MOTOR

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

RELAY WIRE ASS’Y

(BOTTOM ANGLE)

RUN CAP.

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Page 14

5 - 3

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 suffix 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 t

han 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, (flow), to pr event 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 g ood flow 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 conta

mination of the different alloys, which will alter their characteristics, making good soldering more difficult. 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

[ ] PRECAUTIONS FOR USING LEAD-FREE SOLDER

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Page 15

6 – 1

SJ431NSL

Service Manual

CHAPTER 6. FAILURE DIAGNOSIS

[1] OUTLINE OF CONTROL

1. ON/OFF Control of Compressor

When the plug of refrigerator is connected, the compressor will start automatically and run for approximately 5 minutes. After then, ON/OFF of the compressor will be controlled depend on the temperature detected by the R-thermistor. During 6 minutes after the compressor stops, it will not start regardless of the detected temperature by R-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 4 hours)

3. Thermistor

Thermistors are installed in 2 places; in the refrigerator compartment and close to the Evaporator. (R-thermistor and Def-thermistor)

It is not installed in the freezer compartment.

R-thermistor reads the temperature in the refrigerator compartment and controls ON/OFF of compressor.

Def-thermistor detects the temperature around the evaporator and shows the progress of defrosting.

[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 compartment open.

2) Set the Temp. Control Knob in the refrigerator compartment to the following position.

220-240V models: Center

110-127V models: Max

3) Keep the door open and supply power source.

2. Normal Operation

1) Approximately 3 seconds after power supply, the relay on the PWB will be turned ON and the defrost heater will be electrified for 5 seconds.

2) After 5 seconds, if the temperature of Def-thermistor reaches high enough (over 10°C) and judged as defrosting completion, the compressor runs

for 5 minutes and then 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 elect

rified until the temperature of Def-

thermistor reaches the specified temperature or higher.

After completion of electrification, the compressor runs for 5 minutes and then returns to the normal control.

* In the case that any abnormality in Door Switch, Volume, R-thermistor or Def-thermistor, or the Temp. Control Knob is not in the position corre-

sponding to the value of the rating voltage settled to the PWB itself, this mode will not be entered nor the defrost heater is electrified.

Def-thermistor

Evaporator

Defrost heater

R-thermistor

PWB

Compressor

(Center)

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6 – 2

[3] RE-SETTING OF MICROCOMPUTER AT POWER FAILURE

• At the power failure for over 0.1 second, the control of the microcomputer will be reset.

When the power is re-supplied, the temperature of R-thermistor will be detected again and ON/OFF of the compressor will be decided.

• At the momentary power failure (less than 0.1 second), the protector of the compressor might work due to the high load to the compressor for re-

starting.

• When resetting is made during the operation of the defrost heater, the normal cooling will be resumed.

[4] DIAGNOSIS METHOD OF FAILURE

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 figure.)

• Melting in the fuse cannot be checked visually (as the safer one than transparent glass tube is used). Be sure to detach the connector “CN1” before measuring the resistance between the both ends of the fuse by the tester.

• Next, measure the resistance va

lue between the both leads of the varistor.

4. Check whether the temperature (resistance value) shown by R-thermistor is correct or not. (Refer to the table below.)

• Detach the connector “CN3” 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 “CN3” on the PWB and measure the resistance value between 3 and 4 pins.

Varistor→

Normal (several hundreds Ω~several KΩ egamaD)

Fuse↓

Melting

Flow of excessive current is considerable for some reasons. Check for any portion to cause short circuits especially on the primary circuit.

There is a possibility of excessive voltage applied from outside with the factor such as thunder etc. When repeated with a factor other than thunder, there might be the apparatus near by generating noises.

Conduction

Fuse and varistor are normal. Possibility to be caused by excessive current or voltage near the power supply is low. Proceed to the next check item.

—

Fuse

Varistor

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6 – 3

[5] CONVERSION TABLE

Conversion Table between R-thermistor and Def-thermistor Temperature and Resistance Value

Temperature

(°C)

Resistance Value

(kΩ)

Temperature

(°C)

Resistance Value

(kΩ)

Temperature

(°C)

Resistance Value

(kΩ)

-25 26.1 -11 11.49 3 5.5

-24 24.54 -10 10.88 4 5.23

-23 23.08 -9 10.3 5 4.98

-22 21.72 -8 9.75 6 4.74

-21 20.46 -7 9.24 7 4.52

-20 19.27 -6 8.76 8 4.3

-19 18.16 -5 8.3 9 4.1

-18 17.13 -4 7.87 10 3.91

-17 16.16 -3 7.47 11 3.73

-16 15.25 -2 7.09 12 3.56

-15 14.4 -1 6.74 13 3.4

-14 13.6 0 6.4 14 3.24

-13 12.85 1 6.08 15 3.1

-12 12.15 2 5

.78

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Page 18

6 – 4

[6] CIRCUIT DIAGRAM OF MAIN PWB

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Page 19

7 – 1

SJD26LVSL

CHAPTER 7. FUNCTIONS

[1] ADJUSTABLE TEMPERATURE CONTROL

1. Temperature control

1) FREEZER COMPARTMENT

The FREEZER TEMP. CONTROL regulates the quantity of cold air to the freezer.

"MAX" setting directs more cold air to the freezer compartment. (making the freezer compartment colder)

"MIN" setting directs less cold air to the freezer compartment. (making the freezer compartment less colder)

2) REFRIGERATOR COMPARTMENT

The REFRIGERATOR TEMP. CONTROL controls the compressor running time of the refrigeration system.

"Coldest"(5) sett

ing will result in colder temperature in the both (refrigerator and freezer) compartments.

"MIN"(1) control setting will result in warmer temperature in the both (refrigerator and freezer) compartment.

NOTE:

• For hot summer conditions (about over 35 °C ambient temperature), set your FREEZER TEMP. CONTROL to less colder than "MID" (towards "MIN"). This is because "MAX" setting may result in too little air flow to the refrigerator compartment, causing too warm temperature in the refrigerator compartment. And set your refrigerator compartment freeze, you must set the REFRIG

ERATOR TEMP. CONTROL

to less colder setting. (toward "MIN").

• In a cold kitchen (about under 10 °Cambient temperature), set your FREEZER TEMP. CONTROL to "MAX" to avoid too warm temperature in the freezer compartment. This is because the compressor operation is too short in winter, and not enough cold air is provided to the freezer compartment. And if the foods in the refrigerator compartment freeze, you must set the REFRIGERATOR TEMP. CONTROL to less colder setting. (toward "MIN").

• With the FREEZER TEMP. CONTROL set to "

MAX" , there will be less cold air directed to the refrigerator compartment, and the refrigera-

tor compartment may not become cold enough.

2. Reference value of temperature

The values tables above refer to the measurement carried out center area and 1/3 of overall height from the bottom at each of the refrigerator and the freezer after the machine has been operated at an ambient temperature of 32 °C with no food stored and the door closed until the temperature is stabilized.

The values vary depending upon frequency of opening and closing, the doors ambient temperature, amount of stored foods and manner of st

oring

foods.

KNOB SETTING

MAX

MID

MIN

PURPOSE

For making ice rapidly of fast freezing. And winter season. When restocking with fresh food. For normal freezing. For storing frozen food for a short period (up to one month). When frozen food or ice cream is not stored.

FREEZER TEMP.CONTROL

KNOB SETTING

MIN

MAX

(Center)

PURPOSE

For keeping freshness of food longer. When the refrigerator does not provide sufficient cooling. For normal operation. When the refrigerator provides excessive cooling.

When refrigerator temperature control sets to the "MAX", some foods stored may become frozen. In this case adjust control set back to the center position.

REFRIGERATOR TEMP.CONTROL

SETTING OF FREEZER TEMP. CONTROL KNOB

Freezer temperature

MAX

(Coldest)

MID

Approx.

Approx. Approx.

The values shown above refer to the case where the refrigerator temp. control knob is set at "MID".

SETTING OF REFRIGERATOR TEMP. CONTROL KNOB

Refrigerator temperature

MAX

(Coldest)

MIN

Approx.

Approx. Approx.

The values shown above refer to the case where the freezer temp. control knob is set at the center position.

(Center)

MIN

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Page 20

7 – 2

3. Temp. control system

Ambient temperature

Refrigerator compartment temperature (at the center position)

Freezer compartment temperature (at MID position)

Normal operation (ex. at 20 C ambient temperature)

Compressor & Fan

-20

-10

Time

OFF

Temp.(C)

FREEZER COMPARTMENT

REFRIGERATOR COMPARTMENT

Evaporator

Cold air

Fan

Compressor

much cold air

less cold air

FREEZER COMPARTMENT

REFRIGERATOR COMPARTMENT

low cold power

less cold air

regulating the quantity of cold air.

much cold air

regulating the quantity of cold air.

controlling the compressor & the fan running time

high cold power

controlling the compressor & the fan running time

Freezer Temp. Control Knob

The FREEZER TEMP. CONTROL regulates the quantity of cold air to the freezer. MAX

setting directs more cold air to the freezer compartment. (making the freezer compartment colder) MIN

setting directs less cold air to the freezer compartment.

(making the freezer compartment less colder)

Refrigerator Temp. Control Knob

The REFRIGERATOR TEMP. CONTROL controls the compressor & the fan running time of the refrigerator system. MAX

setting will result in colder temperature in the both (refrigerator and freezer) compartments. MIN

control setting will result in warmer temperature in the

both (refrigerator and freezer) compartments.

Coldest Coldest

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8 – 1

SJD26LVSL

CHAPTER 8. ASSEMBLING PROCEDURES OF MAIN PARTS AND CAUTIONS

CAUTION: DISCONNECT THE UNIT FROM THE POWER SUPPLY BEFORE ANY REPAIRING.

[1] F-LOUVER ASS'Y (SJ-A20S/B21S/A24S/B25S/A28S/B27S)

1. Fan motor ass'y

1. Stick U-sealer handle to Fan motor holder b (Fig. A-2).

2. Insert the terminal of Lead EV-cover to Fan motor (Fig. A-3).

3. Insert shaft of Fan motor to the hole of motor cushion, set at Fan motor holder b.

Then insert the boss of rear to the hole of Motor cushion, fix with Tapping screw(1 piece).

4. Set Fan clamp to propeller fan 90 mm. and then insert it to the shaft

of Fan motor( Fig.

A-4).

Fan motor holder b

U-sealer handle

Motor cushion

Lead EV-cover

Fan motor

Motor cushion

Fan motor holder a

Propeller fan 90

Fan clamp

Slit area

Figure A-1

Fan motor holder b

U-sealer handle

Fan motor holder b

Lead EV-cover

Fan motor

Fan clamp

Propeller fan 90

Detail of D

Propeller fan 90

Fan clamp

Fan motor

Motor cushion

Fan motor holder b

Fan motor holder a

Note (1) Assemble so that terminal of Fan motor does not deform. (2) Take care not to stress to terminals of Fan motor after wiring. (3) Check locking by pulling them with more than 10N(1 kgf).

ote

(1) Slit of each Fan Clamp and propeller fan 100 should not be at same

position.

(2) Fan clamp should be inserted virtically to the end of boss. (3) Propeller fan should not be taken out from shaft when pulled by 2 kgf.

(127V : with yellow tape)

WIRE COLOR IS GRAY/ORANGE

GOOD NO GOOD

slit

Fan clamp

slit

SEC. A-A

Figure A-4

Figure A-2

Figure A-3

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8 – 2

2. EV-cover ass'y

1. Bind Fuse ass'y with L-band c. Then wind glass cloth tape (W25 x L50mm ) to lead wire of Fuse ass'y (Figure A-5).

2. Stick EVC-sealer a to square hole of EV-cover.

3. Set Fan motor ass'y to EV-cover. Then Fix with 2 tapping screw(Figure A-6) .

4. Set Fuse ass'y to EV-cover then stick aluminum tape (W39 x L35mm) and EV-cover al to EV-cover.

5. Set Def-thermistor to EV-cover and fix to Fan motor holder b with aluminum tape (W39 x L50mm ).

6. Insert the terminal of Def-thermistor to terminal No.5

/No.6 and then insert the Fuse ass'y to the terminals No.1/No.2. on the 6P connector of Lead

EV-cover (Figure A-7).

7. After wiring at rear of EV-cover take out lead wire from square hole to front and fix with L-band c. Then stick EVC-sealer b to lead wire.

Fuse ass’y

L-band c

Glass cloth tape

W25xL50

Figure A-5

Note

Fan motor ass’y

Tapping screw

Def-thermistor

W25xL50

Glass cloth tape

Stick Al-tape from here

Aluminum tape

W39xL135

L-band c

SEC. D-D

SCALE 2:1

FUSE

(BLACK) (BLUE)

(WHITE)

Fan motor ass’y

(BLACK) (BLUE)

(WHITE)

Pins should be inserted surely, and check by pulling it.

PL Process

Note

Figure A-7

Figure A-6

FAN MOTOR

DEF THERMISTOR

Lead wire of Fuse ass’y must not over EV-cover.

Lead EV-cover

Tapping screw

L-band c

EVC-sealer a

EVC-sealer b

Fuse ass’y

Tapping screw

L-band c

EV-cover al

Stick EV-cover al from this line

(GRAY/ORANGE)

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8 – 3

3. F - louver ass'y

1. Set F-louver to front side of EV-cover with double face tape (W15xL45mm.).

2. Insert F-control knob to F-louver. Then set to front side of EV-cover.

3. Stick EVC-sealer c to bottom of F-louver ass'y.

F-louver

F-control knob

EVC-sealer c

F-louver

Fan motor holder a

Fan motor holder b

F-louver

F-control knob

Fan motor holder a

Fan motor holder b

EV-cover

NO CLEARANCE

Double face tape

W15xL45

.mm5.3nahterom.mm5.3nahterom

Figure A-8

Lead EV-cover

EV-cover

F-louver

F-control knob

arm B

F- louver

arm A

F-control knob

F-louver

F-control knob

SEC. B-B SEC. C-C

Attachment specification of the F-control knob

arm B

The F-control knob is inserted into the ditch of the fan louver.

EV-cover

EV- cover

arm A

Figure A-9

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8 – 4

[2] F-LOUVER ASS'Y (SJ-A31S/A34S)

1. Fan motor ass'y

1. Stick U-sealer handle to Fan motor holder a (Fig. A-2).

2. Insert the terminal of Lead EV-cover to Fan motor (Fig. A-3).

3. Insert shaft of Fan motor to the hole of motor cushion, set at Fan motor holder a.

Next, insert the boss of rear to the hole of Motor cushion, set at fan motor b.

Then fix with Tapping screw (2 pieces).

4. Set Fan clamp to propeller fan 100 mm. and then insert it to the shaft of Fan motor( Fig. A-4).

Fan clamp

Propeller fan 100

Fan motor holder a

U-sealer handle

Motor cushion

Fan motor

Motor cushion

U-sealer handle

Fan motor holder b

Tapping screw

Slit area

BROWN

RED

Lead EV-cover

Figure A-1

Fan clamp

slit

SEC. C-C

Fan motor holder a

U-sealer handle

Fan motor holder a

U-sealer handle

Fan motor

(1) Slit of each Fan Clamp and propeller fan 100 should not be at same

position. (2) Fan clamp should be inserted virtically to the end of boss. (3) Propeller fan should not be taken out from shaft when pulled by 2 kgf.

(1) Assemble so that terminal of Fan motor does not deform. (2) Take care not to stress to terminals of Fan motor after wiring. (3) Check locking by pulling them with more than 10N(1 kgf).

ote

Note

Figure A-4

Figure A-2

Figure A-3

Propeller fan 100

Detail of D

Fan motor holder a

Fan motor holder b

Motor cushion

Fan clamp

Propeller fan 100

Fan motor

Fan clamp

NO GOOD

GOOD

WIRE COLOR IS GRAY/ORANGE

(127V : with yellow tape)

Lead EV-cover

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8 – 5

2. EV-cover ass'y

1. Bind Fuse ass'y with L-band c. Then wind glass cloth tape (W25 x L50mm ) to lead wire of Fuse ass'y (Figure A-5).

2. Stick EVC-sealer a to square hole of EV-cover.

3. Set Fan motor ass'y to EV-cover. Then Fix with 3 tapping screw(Figure A-6) .

4. Set Fuse ass'y to EV-cover then stick aluminum tape (W39 x L35mm) and EV-cover al to EV-cover.

5. Set Def-thermistor to EV-cover and fix to Fan motor holder b with aluminum tape (W39 x L50mm ).

6. Insert the terminal of Def-thermistor to terminal no.5

/No.6 and then insert the Fuse ass'y to the terminals No.1/No.2. on the 6P connector of Lead

EV-cover (Figure A-7).

7. After wiring at rear of EV-cover take out lead wire from square hole to front and fix with L-band c. Then stick EVC-sealer b to lead wire.

Fuse ass’y

L-band c

Glass cloth tape

W25xL50

Figure A-5

Note

SCALE 2:1

FUSE

(BLACK) (BLUE)

(WHITE)

(BLACK) (BLUE)

(WHITE)

Pins should be inserted surely, and check by pulling it.

PL Process

Note

Figure A-7

Figure A-6

FAN MOTOR

DEF THERMISTOR

Lead wire of Fuse ass’y must not over EV-cover.

(GRAY/ORANGE)

EVC-sealer a

EVC-sealer b

Fuse ass’y

L-band c

Fan motor ass’y

Def-thermistor

Tapping screw

L-band c

W25xL50

Glass cloth tape

Stick Al-tape from here

Aluminum tape

W39xL135

L-band c

SEC. D-D

Aluminum tape

W39xL50

Stick EV-cover al from this line

Tapping screw

Lead EV-cover

Tapping screw

EV-cover al

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8 – 6

3. F - louver ass'y

1. Set F-louver to front side of EV-cover with double face tape (W15xL45mm.).

2. Insert F-control knob to F-louver. Then set to front side of EV-cover.

3. Stick EVC-sealer c to bottom of F-louver ass'y.

F-louver

F-control knob

EVC-sealer c

F-louver

Fan motor holder a

Fan motor holder b

F-louver

F-control knob

Fan motor holder a

Fan motor holder b

EV-cover

NO CLEARANCE

Double face tape

W15xL45

.mm5.3nahterom.mm5.3nahterom

Figure A-8

Lead EV-cover

EV-cover

F-louver

F-control knob

arm B

F- louver

arm A

F-control knob

F-louver

F-control knob

SEC. B-B SEC. C-C

Attachment specification of the F-control knob

arm B

The F-control knob is inserted into the ditch of the fan louver.

EV-cover

EV- cover

arm A

Figure A-9

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8 – 7

[3] R CONTROL COV. ASS'Y

1. Insert Lead R-Thermistor to Lead R-C Box.

2. Inset Lead R-C box to PWB L ass'y.

3. Assemble the PWB L ass’y with PWB holder A and then assemble the PWB holder A with PWB holder B.

4. Stick the R-control AL on PWB holder A/B ass’y.

Lamp

R-C Box cover

Control label

R-Control knob

Figure A-10

Lead R-Thermistor( White wire)

Lead R-C Box

PWB holder B

PWB holder A

Lead sealer

Figure A-11

PWB holder A

R-control AL

PWB holder B

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8 – 8

5. Assemble Lamp with R-C Box cover then fix with 2 tapping screw.

6. Stick Knob sealer on R-C Box cover and then insert Knob joint to R-C Box cover.

7. Assemble the PWB ass'y with R-C Box cover. And place the R-Thermistor on the groove of R-C Box cover.

8. Insert Lead R-C Box to Lamp.

9. Insert R-Control knob to R-C Box cover.

10.Stick Control Label on R-C Box cover.

R-C Box cover

Knob sealer

R-C Box cover

Knob joint

Figure A-12

PWB holder

R-Thermistor

R-C Box cover

Lamp

Figure A-13

Control label

R-Control knob

Figure A-14

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[4] HOW TO REPLACE THE LAMP

1. Remove the Light cover.

2. Remove the 2 screw, and pull the Lamp out.

3. Insert the new Lamp to the connector, and fix with 2 screws.

4. Set the Light cover.

Screw

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8 – 10

[5] DEFROST HEATER

1. Taking-out Evaporator

1. Take-out Fan louver ass’y.

2. Take-out E.V cover ass’y.

3. As shown in Figure A-15, pull the upper part of Evaporator toward you, pull it diagonally so that the pipe of Evaporator does not contact the convex part of food liner.

4. Pull the Evaporator for remove as shown in Figure A-16.

NOTE: When pulling Evaporator and bending the pipes,pay attention

so as not to break and deform the pipes. Still, take care not to hurt yourself by fin of Evaporator.

2. Replacement of Def. heater.

1. Remove the aluminium tape on Heater support to take it off from the food liner.

2. Raise the protrusion part of Heater support. Then remove Heater cover.

3. Open Def.heater fixed part of Heater support al to the right and left, then remove Def.heater ass’y.

Evaporator

Food liner convex part

Figure A-15

Food liner convex part

Evaporator

Pipe

Figure A-16

Evaporator

Figure A-17

Heater cover

Protrusion parts

Protrusion part of Drain support al(2 pcs.)

Heater cover

Def. heater ass'y

Heater support

Figure A-18

Heater support

Fixed parts

Def.heater ass’y

Figure A-19

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8 – 11

4. Replace Def. heater ass’y with new one.

5. Bend end of heater support 90.

6. Assemble Defrost heater to Heater Support.

7. Assemble Heater cover to Heater Support. Bend top edge to outside.

8. Roll the leading wire Sealer to Lead wire Defrost Heater.

3. Installing of Evaporator

1. Install Evaporator as shown in Figure.A-15 in the reverse order of Figure.A-16.

2. Correct the deformed fin.

NOTE: 1.When installing Evaporator, take care not to deform signifi-

cantly and break the pipes.

2.Take care not to damage the lead wires and hurt yourself by the fin of Evaporator.

3.You shouldn’t touch Defrost Heater with your bare hand. (you should were pure gloves)

4.You should wipe that with alcohol. When you touch Defrost heater with your bare hand.

Heater support

Def. heater ass'y

Heater cover

Figure A-20

Heater Support

BEND

Figure A-21

4 P

Defrost Heater

Heater

support

Figure A-22

BEND

Figure A-23

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9 – 1

SJ26NSL

Service Manual

CHAPTER 9. COOLING UNIT

[1] COOLING UNIT

NOTE: The iron pipe is partly used of this refrigerator. Please note the following points when brazing the iron pipe.

• Brazing material should be silver brazing rod. (To be equivalent with BAg-20 or BAg-7)

• Flux should be FB3A type. (It should be non-chlorine type).

• Place an iron plate or cloth on the base frame to prevent the flux fall.

• Remove the paint and plating on the pipe by the sandpaper before start repairing.

• If you cut the iron pipe for repairing, remove the plating on the iron pipe end (20mm) by the sandpaper.

• Put the flux on silver brazing rod and dry the flux by the flame of the torch, and then start brazing.

• Remove the flux completely by the wire brush , and wipe off by the cloth after brazing.

• Leakage inspection should be done when compressor is running.

• After removing flux, paint the black enamel paint on the brazing part.

* Copper back condenser is used in some models.Before repairing,check the Back condenser is copper or iron.

Hot pipe L (Side condenser)

Hot pipe (DP-condenser)

Hot pipe R (Side condenser)

Evaporator

Suction pipe

Compressor

Capillary tube

Dryer

Back condenser

S.P connector

Discharge P connector

Dryer connector

Mark: Brazing portion

Mark: Refrigerant flow

Iron pipe

Copper pipe

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9 – 2

[2] LOCATION

1. Location 1

2. Location 2

* Copper back condenser is used in some models.Before repairing,check the Back condenser is copper or iron.

Capillary tube

Dryer

Charge pipe

Dryer connector

Charge pipe L

Suction pipe S.P

connector

Discharge P connector

Evaporator

Compressor

Back condenser

Hot pipe

Mark shows Ag brazing points

Mark shows Cu brazing points

Charge pipe to Dryer

Dryer connector to Dryer

Hot pipe to Dryer connector

Pinch Point

Dryer to Capillary tube

Compressor's discharge pipe

Suction butyl

to Discharge P. connector

Charge pipe L to Compressor's process tube

Back condenser to Hot pipe

D.P. butyl

Discharge P. connector to Back condenser

Pinch point

S.P connector to Compressor's suction tube

S.P connector to Suction pipe

Mark shows Ag brazing points

Mark shows Cu brazing points

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