Pcba-Cpu-Module (Arm9) General Information - Bernina B 590 Service And Maintenance Manual

4.2.2 PCBA-CPU-Module (ARM9) General Information

The PCBA-CPU-Module (ARM9) is the heart of the machine. It is where the firmware for the operation of the
machine is stored.
• PCBA-CPU-Module (ARM9I is the same for these models:
B880
o
7 Series (all models)
o
5 Series ((VIO) all models)
o
• PCBA-CPU-Module (ARM9) sits on a coupler strip on PCBA-Base.
• A PCBA-CPU-Module (ARM9) replacement - no matter whether new or repaired - contains only the
bootloader, making it possible to load the required firmware for the respective model.
• Owing to the new, capacitive screen, the small wire which connects the PCBA-CPU-Module with the
PCBA-Base for the backlighting is no longer needed. Since PCBA-CPU-Module is the same for B 880,
7 Series, and the 5 Series (VIO), the slot for the small backlighting wire is still there, but not on the
PCBA-Base for the 5 Series (VIO).
• Note the LEDs on PCBA-CPU-Module (ARM9), see pict. below.
BERNINA International AG Seestrasse 161 CH-8266 Steckborn
DRAFT – VERSION
Schweiz Seite 46 von 172