Bernina B 570 - Operating Voltage Functional Test

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DRAFT – VERSION
3.2 Operating Voltage Functional Test
PCBA-Base voltages are displayed on the PCBA-Base via LEDs.
3.2.1 Use and functions of LEDs
What to test:
Upper LED 35V
Lower LED 5V
Target state:
lit
lit
Actual status:
not lit
not lit
Repair note:
• Check the wiring for deformation,
tears or breaks. Replace if
necessary.
• Check the connectors for
deformations. Replace if
necessary.
• Check PCBA-Power functioning.
Replace if necessary.
• Replace PCBA-Base.
• Replace PCBA-Base since this 5V are
generated directly on the PCBA-Base.