How to disassemble the blower
12
3) Measure the MOSFET in the PCBA (Step 1)
a) Set the multimeter function to “Diode
measuring” .
b) Contact the red pen pin to the negative
electric contact.
c) Contact the black pen pin to the three
connectors separately and measure the
voltage.
d) If the LCD displays 0.45~0.55V for each
measurement, go to the next testing step,
otherwise means the PCBA is broken.
Follow the procedure “How to replace the
PCBA” to replace a new PCBA.
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