4 Service Tests and Service Mode
M1207026 4-3
4.1 Self tests
The 9100c Ventilator software includes self tests that determine
whether or not the operating software is functioning properly and
whether or not the electronic circuits on the circuit boards are
functional.
The self tests include:
• powerup tests
• continuous tests
• periodic tests
Powerup tests The following list of the tests run at powerup:
• CSB and DMB communication
• CSB and alarm CPU communication
• Paw sensor reference voltage
• Flow sensor reference voltage
• DMB 3.3 V voltage
• PEEP valve DAC and voltage feedback
• Flow valve DAC and voltage feedback
• 10 VA of PEEP and flow valve
If one or more of these tests fail, the display provides a readout of the
problem.
Continuous tests These tests are run continuously during normal operation and alarms
are associated with each test. A failure causes an alarm to display on
the screen in the alarm display area.
• Supply voltage checks
• Battery voltage checks
Periodic tests These tests are run periodically during normal operation.
Tests that run every 1 second include:
• DMB 3.3 V voltage
• 10 VA of PEEP and flow valve
Tests that run every 2 seconds include:
• CSB and DMB communication
• CSB and alarm MCU communication
If one or more of these tests fail, the display provides a readout of the
problem.
M1207027 004 MANUAL−DOC, Technical Reference Manual, Technical Reference Manual for 9100c, English−default
Reproduced from the electronic master in MATRIX
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