Page 1
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
Please follow below instruction for the trouble diagnosis and parts 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.
POWER SUPPLY PLUG
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.
Page 2
8-1. Trouble Diagnosis
No Item Cause and treatment
- Is the PCB connector connected well?
- Is the voltage normal?
- Is the power supply plug connected well?
1 The power is not supplied
2 The water is not supplied.
The wash does not start though
3
the water supply is stopped.
- 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.
- 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.
- 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.
The drum does not rotate during
4
washing.
The drum rotates by one direction
5
during washing. (The drum rotates
to one direction for SPIN.)
6 Drainage problem.
7 Dehydration problem.
8 Abnormal noise during SPIN.
Leak breaker or current/leak
9
breaker is down during washing.
10 The heating is not executed.
- 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.
- The PCB assembly is out of order. Replace it.
(Inversion relay open trouble)
- 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.
- The unbalance is detected.
- Put in the laundry uniformly and start again.
- 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.)
<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.
- 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.
Page 3
8-2 . Problem Checkking And Method Of Pcb
8-2-1 The Part Of Power Source
NO Power On
YES
The Voltage Of
Between)and*Is
As Big As 12V?
YES
NO
Check The Trans
The Voltage Of
Between+and,Is
As Big As 12V?
YES
The Voltage Of
Between-and,Is
As Big As 5V?
YES
NO
NO
Check The Diode(D16-D19)
And Condenser(CE5)
Exchange TR14(KSD288) And
Check The
Condenser(CE3)
)
+
*
,
Page 4
8-2-2. Reset Part
The Value Of
Measurement Result Of
Between Micom 26 And
Gnd Is 5V?
Check IC3
YES
NO
IC3
7042
Check The Power Source
R23 100
26
CE1 1UF
8-2-3. Interrupt Part
Check The Curve
Output Of
Check The Micom
Number 11 ?
Check The Part Of
Oscillator
)
)
?
R44 2.2K
Check D16 - D19, D-23
Check TR12, R41
R41 4.7K
TR12 815
11
R45 C16
C13
Page 5
8-2-4. Checking The Part Of An Oscillator
When The Micom 27,28
Check, The Value Is
8Mhz?
YES
Exchange Micom And Check R25
NO
Check Resonator
8-2-5. Check The Part Of Buzzer
)
Part Confirm DC12V ?
NO
R25 1M
27
28
RESO
8MHz
Check The Part Of Power Source
YES
Exchange BZ,
Check R01,R43
12V
)
BZ
R01 1K
R40 1K
*
IC6
R13 10K
R43
12
Page 6
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
Micom Number, 17 Is
5Voltage?
YES
The Part Of
)
Is
0 Voltage?
YES
Check R58, TRIAC2
NO
Micom Bad
NO
Check The IC 65003
MICOM
IC65003
)
TRIAC5
TRIAC3
TRIAC2
TRIAC7
TRIAC4
Check The Micom 18th In The Above Method When The Cold Water Is Bad
R54
R60
R47
R58
R62
R57
R51
R48
R58
)
)
)
)
)
POWER
PRE
COLD
RINSE
DOOR
PUMP
37
19
18
38
16
17
Page 7
8-2-7. Confirm The Driving Part Of Motor
Motor Is Not Spinning
NO
Motor Is Not Turnning
Right And Left
NO
Check The Tacho Part
YES
Check BD1, TRIAC1
YES
Check RELAY4.5
CM05
R73
R69
BD1
R70
CM2
COIL2
RELAY4.5
RELAY3
R71
TRIAC1
12V
D13
IC 65003
R56
R46
1W 300
MICOM
22
15
Page 8
8-2-8. Checking The Tacho Part
Have The Motor Turn In Hand
Is The Rectangular
Curve In The Micom 8,
10th ?
YES
Exchange The Motor
R38 1K
R47 1K
R39
C17
R46
C15
TR11
TR5
NO
R40
R41 4.7K
815
Check The Surroundings
Circuit And TR5
MICOM
8
10
C12
C28
Page 9
9. Test Mode
1. Driving Compartment Test Mode
A. Hold down “1” and “2” keys simultaneously and then press POWER S/W “4” on.
(Whole lamps turn on and display show “tl” after 3 Seconds.)
B. The driving compartment can be tested when you press “3” key right after entering
into the initial stage of the TEST MODE.
• Driving Compartment Test
Pre-wash VALVE ON(0.3sec)→OFF(0.3sec)→COLD VALVE ON(0.3sec)→[OFF(0.3sec)
HOT VALVE ON (0.3sec) :
Pump MOTOR ON(0.3sec)→OFF(0.3sec)→MOTOR Left (0.5sec)→OFF(0.5 sec)
MOTOR Right (0.5sec)→OFF(0.3sec)→HEATER RELAY ON(0.3sec)→OFF(0.3sec)→DOOR OPEN
(Function continues when door is closed)
OPTION
]→OFF(0.3sec)→Rinse VALVE ON(0.3sec)→OFF(0.3sec)
→
→
→
Page 10
10. Designation of Main Components
9-1 Normal / Reverse Revolution of Motor and R. P. M. Control
89
510
89
Rotor
Stator coil
Rotor
Stator coil
+
CW
-
+
CCW
5
-
10
5
<Figure1> <Figure2>
(
±7%)
STATOR(5.1) STATOR(5.1) ROTOR(8.9) TACHO(3.4) PROTECTOR(6.7) "H"(mm) Code-No. Remark
1.592
Rated
value
10-2 Door safety Device
123456
O
D
E
H
E
C
P
A
S
T
H
G
I
H
WASHING MOTOR
2.094
10
789
D
E
E
R
P
O
S
-
T
)
E
C
C
L
E
0
D
T
5
D
O
I
1
(
R
M
P
R
38.8
STATOR
O
T
O
R
R
O
T
A
T
S
220~240V/50Hz
H
0 39 DC31-00002E S8.3J
When Door is closed, door stay closed. if "set" is operated, power supplied to , wires have bymetal keep
the door closed, and electronical power flows between and make it operate.
Page 11
10-3 Heater
1) Capacity : AC 230V/1900W
2) Location : Bottom of TUB
3) Function : Raise the water temperature
supplied at the wash process.
4) Resistance value : 23~29
5) Thermal Fuse : 128°C
Thermistor
10-4 Detergent tub and water supply value
A Detergent tub is composed of housing and 3 drawers . supplied water flows into the 3 drawer-detergent tub by
way of classifier at each washing process.
three open drainage way whith detergent and supplied water by way of connector located under the housing flows
into washing tub.
the water supply valve is composed of a hot water valve(1 way) and a cold water valve(3way) and water flow per
mininthevalveisbelow.
Hot water valve(1 way)
water flow(L/min) 10L 10 L 5L
resistance value 4.3
power consumption AC 220v ~ 240V 50/60
usable water pressure 0.5 ~ 8/
Cold water valve(2 way)
V1 V2
4.2
10-5 Shock absorber and buffer spring
This wash machine is equipped with 2 Shock absorbers with same
capacity and with 2 buffer springs. 2 Shock absorber are placed
under the tub and outside case , 4 buffer springs are placed on the
right and left of the upper side of outside case.
Shock absorber function: during wash, dehydration absorb the shock.
buffer spring: buffering the vibration
device
Shock absorber 82kg
capacity of Shock absorber
4.2
Page 12
10-6 ASSY-TUB BACK
INNER-BEARING
A
C
OIL-SEAL
Assy-Tub Back REMARK
TYPE INNER-BEARING(A) OUT-BEARING(B) OIL-SEAL(C)
OUT-BEARING
B
Assy-Housing
Bearing(D)
I ø20 ø17 ø24.3 DC97-02133A DC97-02137A
10-7 ASSY- DRUM
A
B
(unit : mm)
C
TYPE
(A) (B) (C) CODE-NO. REMARK
I ø20 ø17 ø25 DC97-02099A Lifter type
10-8 ASSY-PUMP DRAIN
1) Capacity : AC 230V 34W
2) Location : Front bottom(R)
3) Resistance :160é~ 190
é
(unit : mm)
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