3-6
V60 Ventilator Service Manual
1049766 Rev A
Chapter 3: Theory of Operation
3.2 Electronics
The electronics system provides software-based control and monitoring, power
management, user input, display, subsystem I/O, external communication, and
alarms. The electronics system includes a Cirrus EP9307 microcontroller for
control and monitor processing.
Control tasks include breath delivery, patient data calculation, and alarm
detection/response. Monitoring tasks include controlling the LCD, front panel
keys and indicators, inputs, and primary alarm output. An independent
watchdog control provides safety monitoring.
The electronics system includes:
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Power management (PM) PCBA
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Power supply
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Internal battery
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CPU PCBA
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Motor controller (MC) PCBA
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Data acquisition (DA) PCBA
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Flow sensors
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User interface
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Liquid crystal display (LCD)
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Backlight inverter PCBA
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Touch screen assembly
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Nav-ring assembly
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Power switch overlay
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Switch PCB
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User interface (UI) PCBA