Working basis
14 Service Instructions 878-M PREMIUM - 03.0 - 10/2019
3.3 Machine operation lock
Fig. 1: Service stop button
Important
With the exception of common operations of the sewing process, it is
necessary to lock the machine before every handling (such as changing
or threading the bobbin).
1. Press the button (1) .
The button lights up.
The main drive is disconnected from the power supply.
2. Perform the necessary operation.
3. Press the button (1).
The button goes out.
The power supply is on again.
(1) - Service stop button
WARNING
Risk of injury!
Before performing service, switch off the machine
by using the main switch.