Daewoo DWF-5590DP Series, Руководство по обслуживанию

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SAFETY SWITCH UNIT
1) CIRCUIT DIAGRAM
2) EXPLANATION OF CIRCUIT
• The MICOM terminal No. 63 gets into 'L' at the state of the closed lid. If the lid is opened in spining stage, the MICOM
generates error signal as 'LE'.
• Case of range 40 mSEC~300 mSEC in spining time: It is regarded that washing clothes should be inclined.
Accordingly washing time increases 8 minutes and rinsing action takes place another one time. Case of above 400
mSEC: It is regarded that the lid should be open. Therefore it is displayed as 'LE'.
3) CAUTION FOR A/S
• Be level with the ground.
• The 'UE' error occurs in case of not being level with the ground.
• The waveform between the MICOM terminal No. 63 and the GND.
LOAD SENSOR UNIT
1) CIRCUIT DIAGRAM
2) EXPLANATION OF CIRCUIT
• After TRIAC is off, RUNNING CONDENSOR discharges the voltage charged in it and sinwave is generated at this time.
MICOM starts to check every 0.224ms the time from 2nd falling edge to 3rd falling edge. Photo coupler (IC4) of PCB
converts the sinwave into clock pulse (times X 0.224ms) and send it to MICOM terminal No. 22 & 23. MICOM checks
the clock pulse and counts the periodic time and judges the water level after comparing with data which is already
memorized in the MICOM.
• The waveform between the part of
!
and GND (Waveform of pulse)
40
R3.220
R4,3.9K
Safety
S/W
C1
104Z
0V
5.4V
t
Lid is closed Lid is open
M
I
C
O
M
22
23
R13, 220
R14, 220
C12
104Z
R17
10K
Q3
A562
R39,10K
Q16
C1959
!
5.4V
R53, 10K
R55, 10K
PC817
R54
3.9K
1N4148
D5
IC4
6V
TRIAC
MOTOR
RUNNING CONDENSOR
0
5.4V
1st 2nd 3nd
triac on triac off
(time X 0.224ms)