Samsung DV306LEW/XAA, Service Manual

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▶ Function
Applies the electric current to the silver plate during the water supply and uses the silver water to
perform the bacteria-free or sterilization processes.
▶ Description
- Selects the silver nano feature to operate the system.
- Supplies water to the two silver plates AG_B and AG_A. Then, SINAL_A and SIGNAL_B output a
high signal of 5V.
- Both SIGNAL_A and SIGNAL_B repeat this for 15 seconds outputting a high signal of 5V.
SIGNAL_A output turns TR1 and TR6 on to generate a potential difference between the 12V
and the grounding for causing the current to flow. SIGNAL_B output turns TR4 and TR5 on to
generate a potential difference between the 12V and the grounding for causing the current to
flow.
- The flowing current is transformed to a voltage by the resistance of R27.
- Then, the voltage is applied to IC1 pin 2 and used for detecting and controlling the flowing cur
rent.