ENGLISH
Service Manual - CR 28
BOOST
®
9
BRUSHING SYSTEM
TROUBLESHOOTING
OPEN CIRCUIT
The.fuse.(F1).causes.an.open.in.the.function.electronic.board.supply.circuit..This.system.prevents.the.circuits.from.being.damaged.
in.case.of.failure.
If.there.is.an.open.in.the.fuse,.the.possible.causes.are:
The.function.electronic.board.wiring.harness.is.damaged.or.shorted.(check.the.power.cables.on.the.function.electronic.board.
and.the.relevant.connections).
The.function.electronic.board.is.damaged.(replace).
THE BRUSH DECK DOES NOT FUNCTION
Possible.causes.(see.also.the.Electrical.System.chapter,.function.electronic.board.diagnosis):
The.function.electronic.board.wiring.harness.or.the.brush.motors.are.damaged.(repair).
The.function.electronic.board.is.damaged.(replace).
The.motor.deck.is.shorted.(replace).
The.motor.carbon.deck.are.worn.(replace).
The.motor.is.faulty.(repair.or.replace).
The.wiring.harness.is.damaged.(repair).
THE BRUSH DECK CANNOT BE LIFTED/LOWERED OR THE EXTRA PRESSURE FUNCTION CANNOT BE
TURNED ON
Possible.causes.(see.also.the.Electrical.System.chapter,.function.electronic.board.diagnosis):
The deck lifting/lowering actuator end-of-strokes are not properly adjusted (adjust).
The.deck.lifting/lowering.actuator.end-of-stroke.microswitches.are.broken.(replace.the.actuator).
The.deck.lifting/lowering.actuator.is.broken.(replace).
There.is.an.open.in.the.actuator.wiring.harness.(check.the.connections.according.to.the.procedures.shown.in.the.Electrical.
System.chapter,.Troubleshooting.paragraph).
THE MACHINE DOES NOT COLLECT THE SOLUTION COMPLETELY
Possible.causes:
The side skirts are not properly adjusted (adjust/replace).
1.
2.
1.
2.
3.
4.
5.
6.
1.
2.
3.
4.
1.
