2, check whether both ends of connector of the motor are
connected well.
3, check whether the conductivity of motor lead wire is
good.
4, check the motor drive module of circuit board is
working normally
5、Check whether the it is at top position, check whether
up-down zero light sensor works normally at top position.
Malfunction 2
1、check whether the installation of left and right limit light
sensors is correct.
2、When the instrument is turned on, manualy sway the
stirring mechanism to observe the right limit coupler,
transferr the multimeter to DC, negative points P02 core
plug No.9, then plug positive P02 to the first pole core No.8.
(1）Multimeter readings changes between 5V and 0, the light
sensor, lead and adaptor are normal.
1) Check conductors
Check whether the P02 plug 7,8,9 core well-connected, the
connection is connected at both ends of good
2) Check the reaction plate coupler circuit board part of the
circuit signal input
(2）No change multimeter reading
1) Check conductors
Check whether the P02 plug 7,8,9 core well-connected,
the connection is connected at both ends of good
2) Check the coupler signal
Check voltage between P02 plug 7,9 feet, if the voltage is
not 5v, check the connection plug is connected good. If
the voltage is 5v, check the J02 socket 8-foot potential, up
to the peak when the potential was high or low potential.
If the potential is not normal, check the coupler.
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