Bernina B 590 Service And Maintenance Manual page 31

After updating it, start machine in Service Program. Carry out the required calibrations:
Calibration
Enter series number as prompted
Upper-thread tension unit
Presser-foot height light barrier (micro switch)
Start/Stop Unit (SSU)
Button length measuring system (buttonhole calibration)
Electronic balance calibration
Note:
When using a blank EEPROM, always carry out the calibrations described above.
Case 5: PCBA-CPU-Module is used in a machine for testing reasons, then put back in stock. When
used the next time, it contains the wrong firmware.
1. After installing the new PCBA-CPU-Module and switching on the machine, a new firmware is asked
for.
2. Switch machine off.
3. Connect USB data stick containing the relevant firmware for machine.
4. Switch machine on. Firmware updating process starts automatically.
5. Reboot machine manually after 'successful updating' message has appeared.
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