Daewoo DWF-4230 Series, Service Manual

Page: 17 / 27

36 35
2) EXPLANATION OF CIRCUIT
• The MICOM terminal No. 8 gets into 'L' at the state of the closed door. If the lid is opened in spining stage, the MICOM
generates error signal. (See page 22)
• Case of range 40 mSEC~300 mSEC in spining time: It is regarded that washing clothes should be inclined. Accordingly
washing time increases 7 minutes and rinsing action takes place another one time. Case of above 300 mSEC: It is
regarded that the lid should be open. Therefore it is displayed as door open error. (See page 22)
3) CAUTION FOR A/S
• Be level with the ground.
• The UNBLANCEerror occurs in case of not being level with the ground.
• The waveform between the MICOM terminal No. 8 and the GND.
LOAD SENSOR UNIT
1) CIRCUIT DIAGRAM
2) EXPLANATION OF CIRCUIT
• Detecting photo coupler the voltage of running condenser, it sends the sensing data to the MICOM terminal No. 32. That
is, as charging & discharging time of running condenser becomes different according to the loads, in fuzzy course the
washing time is determined by sensing the quantity of washing clothes.
• The waveform between the part of
1
and GND (Waveform of pulse)
OSCILLATION UNIT
1) CIRCUIT DIAGRAM
2) EXPLANATION OF CIRCUIT
• As the OSCILLATION UNIT is a basic part of the MICOM DRIVE. If the oscillation doesn’t generate, we are able to
consider that the MICOM is destroyed.
• The waveform between the part of
1
and the GND.
• Specification of oscillator.
It is in general use for the MICOM maker’s recommendator value of RESONATOR which is fit for MICOM’S
Characteristics.
SAFETY SWITCH UNIT
1) CIRCUIT DIAGRAM
TYPE OF OSCILLATOR
RESONATOR
MAKER
MURATA
RATING FREQUENCY
8MHz