Samsung S803JGB2/YLW, S803JGS2/YLW, S803JGW2/YLW, S803JGP2/YLW, S803JGE2/YLW Service Manual

SERVICE

WASHING MACHINE

CONTENTS

WASHING MACHINE

Caution for the safety during servicing

1. SPECIFICATIONS

2. SAFETY DEVICES

3. OVERVIEW OF THE WASHING MACHINE

4. OVERVIEW OF THE CONTROL PANEL

5. MAIN FUNCTION

6. TECHNICAL POINT

7. GENERAL ERROR FUNCTION

8. TROUBLE DIAGNOSIS

9. TEST MODE

10. DESIGNATION OF MAIN COMPONENTS

11. PCB SCHEMATIC DIAGRAM

11-1. PCB CIRCUIT DIAGRAM

12. SETTING UP A WASH MACHINE

13. ASSEMBLE AND DISASSEMBLE

14

. TOOLS FOR DISASSEMBLY AND ASSEMBLY

15. EXPLODED VIEW AND PARTS LIST

Manual

S803JGB2/YLW

S803JGW2/YLW

S803JGP2/YLW

S803JGS2/YLW

S803JGE2/YLW

- 27 -

11-1. PCB CIRCUIT DIAGRAM

2
7

28

11-1. ASSY-PCB Part List

LOCATION NO. CODE NO. DESCRIPTION SPECIFICATION Q'TY REMARK

WDD01 1401-001007 THYRISTOR-TRIAC 10A,800V,20uA,300V/uS,TO-220AB 1 TRIAC1

WDD01 1401-001024 THYRISTOR-TRIAC 2A,800V,20UA,300V/US,TO-220F 1 TRIAC2

WDD01 1401-001024 THYRISTOR-TRIAC 2A,800V,20UA,300V/US,TO-220F 1 TRIAC3

WDD01 1401-001024 THYRISTOR-TRIAC 2A,800V,20UA,300V/US,TO-220F 1 TRIAC4

WDD01 1401-001024 THYRISTOR-TRIAC 2A,800V,20UA,300V/US,TO-220F 1 TRIAC5

WDD01 1401-001024 THYRISTOR-TRIAC 2A,800V,20UA,300V/US,TO-220F 1 TRIAC7

WDD02 0402-001023 DIODE-BRIDGE RBV1506,600V,15A,SIP-4 1 B/D

WDD03 3501-001180 RELAY-MINIATURE 12VDC,400mW,-,2FormC,7mS,3mS 1 RELAY3

WDD04 3501-001156 RELAY-POWER 12VDC,0.53W,16000MA,1FORMA,20MS,10MS 1 RELAY1

WDD04 3501-001156 RELAY-POWER 12VDC,0.53W,16000MA,1FORMA,20MS,10MS 1 RELAY2

WDD05 0402-000137 DIODE-RECTIFIER 1N4007,1000V,1A,DO-41,TP 1 D14

WDD05 0402-000137 DIODE-RECTIFIER 1N4007,1000V,1A,DO-41,TP 6 D15~D19

WDD06 0504-000130 TR-DIGITAL KSR1105TF,NPN,200MW,4.7K/10K,SOT-23,TP 1 TR3

WDD06 0504-000130 TR-DIGITAL KSR1105TF,NPN,200MW,4.7K/10K,SOT-23,TP 1 TR4

WDD06 0504-000159 TR-DIGITAL KSR2105,PNP,200MW,4.7K/10K,SOT-23,TP 1 TR1

WDD06 0504-000159 TR-DIGITAL KSR2105,PNP,200MW,4.7K/10K,SOT-23,TP 1 TR2

WDD07 DE13-20016A IC-VOLT REGU KA7805A,TO-220AB,1A,0/125C,-,- 1 TR7

WDD08 0501-000465 TR-SMALL SIGNAL MMBT3904,NPN,350mW,SOT-23,TP,100-300 2 TR5,TR6

WDD09 1202-000141 IC-VOLTAGE COMP. 7033,SOT-89,3P,-,SINGLE,0V,-,P 1 IC4

WDD10 2802-000188 RESONATOR-CERAMIC 8MHz,0.5%,TP,10.0x5.0x8.0mm 1 RESO

WDD11 DE13-20017A IC-DRIVE KID65003AP,DIP,16P,STICK,TR-AR 3 IC3,IC5,IC6

WDD12 1103-001203 IC-EEPROM 524C20D21,128x8Bit,DIP,8P,300MIL,-,2.5V,-,PL 1 IC2

WDD13 DE30-20016A BUZZER CBE2220BA,STICK,-,-,-,-,-,-,- 1 BZ

WDD14 3404-000282 SWITCH-TACT 12Vdc,50mA,120gf,6x6x5mm,SPST 1 SW2

WDD14 3404-000282 SWITCH-TACT 12Vdc,50mA,120gf,6x6x5mm,SPST 1 SW3

WDD14 3404-000282 SWITCH-TACT 12Vdc,50mA,120gf,6x6x5mm,SPST 1 SW4

WDD14 3404-000282 SWITCH-TACT 12Vdc,50mA,120gf,6x6x5mm,SPST 1 SW5

WDD14 3404-000282 SWITCH-TACT 12Vdc,50mA,120gf,6x6x5mm,SPST 1 SW7

WDD14 3404-000282 SWITCH-TACT 12Vdc,50mA,120gf,6x6x5mm,SPST 1 SW8

WDD15 DE07-20040A LED LAMP SLH-34VC70F,RED,T,PI5,-,-,-,- 1 L10

WDD15 DE07-20040A LED LAMP SLH-34VC70F,RED,T,PI5,-,-,-,- 1 L11

WDD15 DE07-20040A LED LAMP SLH-34VC70F,RED,T,PI5,-,-,-,- 1 L14

WDD15 DE07-20040A LED LAMP SLH-34VC70F,RED,T,PI5,-,-,-,- 1 L15

WDD15 DE07-20040A LED LAMP SLH-34VC70F,RED,T,PI5,-,-,-,- 1 L21

WDD15 DE07-20040A LED LAMP SLH-34VC70F,RED,T,PI5,-,-,-,- 1 L22

WDD15 DE07-20040A LED LAMP SLH-34VC70F,RED,T,PI5,-,-,-,- 1 L23

WDD15 DE07-20040A LED LAMP SLH-34VC70F,RED,T,PI5,-,-,-,- 1 L24

WDD15 DE07-20040A LED LAMP SLH-34VC70F,RED,T,PI5,-,-,-,- 1 L25

WDD15 DE07-20040A LED LAMP SLH-34VC70F,RED,T,PI5,-,-,-,- 1 L29

WDD15 DE07-20040A LED LAMP SLH-34VC70F,RED,T,PI5,-,-,-,- 1 L30

WDD15 DE07-20040A LED LAMP SLH-34VC70F,RED,T,PI5,-,-,-,- 1 L31

WDD15 DE07-20040A LED LAMP SLH-34VC70F,RED,T,PI5,-,-,-,- 1 L32

WDD15 DE07-20040A LED LAMP SLH-34VC70F,RED,T,PI5,-,-,-,- 1 L33

WDD15 DE07-20040A LED LAMP SLH-34VC70F,RED,T,PI5,-,-,-,- 1 L34

WDD15 DE07-20040A LED LAMP SLH-34VC70F,RED,T,PI5,-,-,-,- 1 L35

WDD15 DE07-20040A LED LAMP SLH-34VC70F,RED,T,PI5,-,-,-,- 1 L36

WDD16 DE07-00011A LED DISPLAY A4232GM-0,23.7*18.7*17.2,GRN,2dig,14seg,-,- 1 DISP

WDD18 DE34-20071A SWITCH-ROTARY DC10V,1MA,SH,PA-1005A-003-000, 1 E/SW

12

7. General Error Function

l

When an error occurs, this function starts to keep generating error melody sounds and displays error indicators as
shown in the followings per corresponding error by blinking in 0.5sec interval until the error status is completely cleared out.
In this case, all the driving devices are turned off until the error is cleared out.

1. WATER SUPPLY ERROR

- Display shows ‘ E1’ .

- Water Supply Error occurs when water level frequency does not show changes more than 100Hz or water is not supplied
up to the water level presetting for 20 min or more at the time of initial water supply.

- The error status can be cleared by turning POWER S/W OFF and resuming the POWER ON initial status.

2. WATER DRAIN ERROR

- Display shows ‘ E2’ .

- In case the water level frequency is 24.5KHz or less in the initial phase of UNB-detecting cycle.

- Water Drain error can be cleared by turning POWER S/W OFF and resuming the POWER ON initial status.

3. OVER-FLOW ERROR

- Display shows ‘ E3’ .

- Over-Flow error occurs when the water level is in abnormal operation. It can be cleared by turning POWER S/W OFF.
Water is drained prior to POWER S/W OFF and it is forced to be drained for 2 min if a frequency of more than 24.5
KHzisdetected.

4. DOOR OPEN ERROR

- Display shows ‘ door’ or‘Ed

’

- Door Open error can be cleared by closing the door.

5. UNBALANCE ERROR

- Display shows ‘ E4’ .

- Laundry load is unbalanced; loosen any tangled laundry.

- If only one item of clothing needs washing, such as a bathrobe or jeans, the final spin result might be unsatisfactory and an

“ E4” error message will be shown in the display window.

- Unbalance error is cleared by POWER S/W OFF and by resuming the POWER ON initial status.

6.WATERHEATERERROR

- Display shows ‘ E5,E6’ .

- In case the water temperature rises by 7°C or more in 1 min. or by 2° C less in 10 min after heating is started.

- It can be cleared by turning POWER S/W OFF.

7. ASS’ Y PRESSURE S/W ERROR

* Generated Frequency Signal of WATER LEVEL(W/L) S/W (KHz)

- If the same signal as the above table is detected for more than 5 seconds, it is a PRESSURE S/W Error.

- When the error occurs, water drain pump will operate for 3 min. and then turn off the water drain pump.
Then the display shows ‘ E7’ indicating a pressure s/w error indicator.

8. ABNORMAL WATER TEMPERATURE ERROR

- In case the water temperature is 50°C or more in Delicate and Wool course.

- At the time of initial water supply, if the water temperature is not appropriate, water starts to be drained

and it is forced to be drained for 2 min when the abnormal frequency of 24.5KHz is detected.

- Display shows ‘ E8’ .

- This error can be cleared by POWER S/W OFF.

9. WATER LEAKAGE ERROR (E9)

- Water Leakage error occures when water is drained naturally after washing program starts.

Course Water Temp

Delicate 50°C or more

Wool 50°C or more

Level Low Level High Level

Abnormal W/L Frequency 30.00 KHz 15.00 KHz

13

7. General Error Function

10. Tacho Error

- This error occurs in case motor thaco is out of order or tacho siganals inputted are fewer than 2

- "EA" displayed

- This error can be cleared by power s/w off

11. Motor Triac short Error

- This error occurs in case over 300 per 1 sec tacho signals are inputted power S/w should be off.

- "Eb" displayed.

- This error can be cleared by power s/w off

12. Thermistor error

- This error occurs, when Thermistor circuit is abnormal or the detected electrical volt is 0.2v below or 4.5v over

- "Ec" displayed

- This error can be cleared by power s/w off

14

8. Trouble Diagnosis

- As the micom wash machine is configured of the complicate structure, there might be the service call.
Below information is prepared for exact trouble diagnosis and suitable repair guide.

Caution for the Repair and Replacement

1) As some electronic components are damaged by the charged static electricity from the resin part of wash
machine or the human body, prepare the human body earth or remove the potential difference of the
human body and wash machine by contacting the power supply plug when the work contacting to PCB is
executed.

2) Since AC220~240V is applied to the triac T1 and T2 on P.C.B, the electric shock may occur by touching
and be careful that the strong and weak electricity are mixed.

3) As the P.C.B assembly is designed for no trouble, do not replace the P.C.B assembly by the wrong
diagnosis and follow the procedure of the trouble diagnosis when the micom is not operated normally.

Please follow below instruction for the trouble diagnosis and parts replacement.

POWER SUPPLY PLUG

15

8-1. Trouble Diagnosis

No Item Cause and treatment

1 The power is not supplied

- Is the PCB connector connected well?

- Is the voltage normal?

- Is the power supply plug connected well?

- Is the noise filter connected well?

- Is the secondary output of the power supply transformation normal?

- Is the fuse disconnected? (option)

• If above points are not found, the PCB assembly is out of order.
Replace it.

2 The water is not supplied.

- Is the knob open?

- Did you push START/PAUSE button after selecting the course?

- Is the water supply valve connected well?

- Is the winding of the water supply valve continuous?

- Is the connection and operation of the pressure switch normal?

• If above points are not found, the PCB assembly is out of order.
Replace it.

3

The wash does not start though
the water supply is stopped.

- Is the connection and operation of the pressure switch normal?

- Is the pressure switch hose damaged so that the air is leaked?

- Is the pressure switch hose bent?

- Check the operation of the water level switch.

• If above points are not found, the PCB assembly is out of order.
Replace it.

4

The drum does not rotate during

washing.

- Is the belt connected well?

- Is the winding of the motor continuous?
(Rotor winding, stator winding, generator)

- Is the motor protector normal?

• If above points are not found, the PCB assembly is out of order.
Replace it.

5

The drum rotates by one direction
during washing. (The drum rotates
to one direction for SPIN.)

- The PCB assembly is out of order. Replace it.
(Inversion relay open trouble)

6 Drainage problem.

- Is the drainage hose bent?

- Is the winding of the drainage pump continuous?

- Is the drain filter clogged by the waste?

• If above points are not found, the PCB assembly is out of order.

Replace it.

7 Dehydration problem.

- The unbalance is detected.

- Put in the laundry uniformly and start again.

8 Abnormal noise during SPIN.

- Is the pulley nut loosen?

- Is the transport safety device removed?

- Is the product installed on the level and stable place?
(Little noise may be generated during the high-speed SPIN.)

9

Leak breaker or current/leak
breaker is down during washing.

<When the leak breaker and current breaker is installed separately>

- When the leak breaker is down, check and make the earth of the outlet.

- When the current is down, the current is leaked.

<Is the breaker down when the leak/current breaker is combined?>

- Check the rated capacity of the current and leak breaker.
The current breaker may be down due to the lack of the current when the
wash machine and other apparatus are used.

In this case, execute the cold water wash to check whether the current capacity is lack.

10 The heating is not executed.

- Is the wash heater terminal unplugged?

- Is the wash heater normal?

- If above points are not found, the PCB assembly is out of order.
Replace it.

16

8-2 . Problem Checking And Method Of PCB

8-2-1 The Part Of Power Source

YES

YES

NO

YES

NO

YES

NO Power On

Check The Trans

Check The Diode(D15-D19)

And Condenser(CE5)

Exchange TR7(7805) And

Check The

Condenser(CE3)

The Voltage Of

BetweenⓐandⓑIs

As Big As 12V?

7805

D15,16,18,19

D17

CE5

CE3

TR7

ⓐ

ⓑ

ⓒ

ⓓ

ⓔ

60

61

62

30

63

TRANS

2200UF

470UF

The Voltage Of

BetweenⓒandⓓIs

As Big As 12V?

The Voltage Of

BetweenⓔandⓓIs

As Big As 5V?

NO

17

8-2-2. Reset Part

NO

YES

8-2-3. Interrupt Part

The Value Of

Measurement Result Of

Between Micom 26 And

Is 5V?

Check The Power Source

26

7042

IC3

R12 100

CE1 1UF

Check IC3

TR6 815

11

R64 2.2K

R60 4.7K

R61 C23

C22

ⓐ

Check The Curve

Output Ofⓐ?

Check D15 - D19

Check The Micom

Number 11 ?

Check TR6, R60

Check The Part Of

Oscillator

18

8-2-4. Checking The Part Of An Oscillator

8-2-5. Check The Part Of Buzzer

When The Micom 27,28

Check, The Value Is

8Mhz?

Check Resonator

Exchange Micom And Check R29

27

28

R29 1M

RESO

8MHz

ⓐ

Part Confirm DC12V ?

Check The Part Of Power Source

Exchange BZ,

Check R40,R13

12

R13 10K

BZ

R40 1K

IC6

12V

ⓐ

ⓑ

NO

YES

NO

YES

19

8-2-6. Driving Part Checking

◆◆◆◆

Confirm The Output Of DC5V, When The Every Part Of Micom Number Check,

According To The Some Problem Condition

ex) When The Drain Is Not Operating But Pump Motor Is Operating, Check

The 5Voltage Of Micom

※※※※

Check The Micom 18th In The Above Method When The Cold Water Is Bad

37

19

18

38

16

17

IC65003

MICOM

POWER

PRE

COLD

RINSE

DOOR

PUMP

R54

R47

R58

R51

R48

TRIAC5

TRIAC3

TRIAC2

TRIAC7

TRIAC4

ⓐ

ⓐ

ⓐ

ⓐ

ⓐ

ⓐ

Micom Number, 17 Is

5Voltage?

Micom Bad

The Part Of

ⓐ

Is

0 Voltage?

Check The IC 65003

Check R48, TRIAC4

NO

NO

YES

YES

20

8-2-7. Confirm The Driving Part Of Motor

BD1

RELAY3

D13

TRIAC1

CM2

R71

R46

1W 300

CM05

R69

COIL2

IC 65003

22

15

MICOM

12V

Motor Is Not Spinning

Check BD1, TRIAC1

Motor Is Not Turning

Right And Left

Check RELAY2

Check The Tacho Part

YES

YES

NO

NO

21

8-2-8. Checking The Tacho Part

Have The Motor Turn In Hand

Is The Rectangular

CurveInTheMicom8,

10th ?

Check The Surroundings

Circuit And TR5

R38 1K

TR5

R41 4.7K

R39

C28

815

C15

8

10

Exchange The Motor

MICOM

NO

YES