Service Manual: SC750, SC800, SC 750 ST, SC800 ST
Form Number 56043150 Page 97
Step #3
Next the brush motor relay is de-energized. This removes the baery posive power source from the motor AND instead
connects the motor to baery negave through the normally closed contacts. The motor stops abruptly when both sides
are connected to baery negave. It is the abrupt stop that releases the brush lugs from the plate retaining spring. Aer
a me out period the Main Machine Controller de-energizes the brush remove relay.
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