2) Measure the MOSFET in the PCBA (Step 1)
How to detect the PCBA and motor
19
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 “Replace the PCBA” to replace a
new PCBA.
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