SAMSUNG S1093 Service Manual Troubleshooting

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.

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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.

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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)

)

+

*

,

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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

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