Service manual

97
2
101766 6581
101766
Issue Month Year
01 02 00
Motor and motor control
Motor control
The motor control unit is microcomputer control-
led and is situated under the top cover of the
machine, right above the outer drum.
The unit consists of a PCB (mother board) fitted
on a heat sink that does double-duty as part of
the housing.
The cable harness is directly connected to
the PCB, voltage supply input and the voltage
supply to the motor using connectors; the other
cables are connected with flat connectors to the
PCB.
A detailed description of input and output cables
is presented in the section “Function”.
Depending on the machine size, this unit comes
in four different versions. The units have different
sizes in order to be able to control motors of dif-
ferent sizes. Larger machines also have ventila-
tion fans, however the function and connections
are identical.
Motor control U1
2