Scrub System, Disc 77Service Manual – SC500
Troubleshooting
Trouble Possible Causes Remedy
The brush does not clean properly The brush is excessively worn Replace
One brush does not turn See the chapter Control System,
Function Board (EB1) Error Codes
Brush motor carbon brushes worn Replace
Presence of bulky debris or string around the brush or
between the brush and attachment ange
Remove the brush and clean it
Faulty brush motor Repair or replace
Wiring damaged Repair
It is not possible to raise/lower the brush See the chapter Control System,
Function Board (EB1) Error Codes
Deck raising/lowering actuator (M5) broken Replace
Break in actuator wiring Check the connections according
to the instructions in the Electrical
System chapter, Troubleshooting
paragraph
Function Board (EB1) damaged Replace
The brush disengagement system does
not work
Function Board (EB1) faulty Replace
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