ASP sterrad NX, Service & Troubleshooting Manual

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3
Functional Description
Diagnostic Functions and Tests
The diagnostic function of the system software provides an automatic
link between a failed cycle (cancelled cycle) and a specific subsystem
function and performance test. The user or the service personnel can
access the diagnostic functions independent of the cycle.
The STERRAD NX system software also provides predefined test
sequences to determine the functionality and behavior of each subsystem.
The diagnostic features of the system software provide service personnel
detailed information about system performance.
The system diagnostic tool is designed to provide the following
information:
♦
The result of the diagnostic test provides specific corrective action
for the user or service person.
♦
The diagnostic test identifies a failed individual component or a
group of components.
♦
Tests can better isolate failures to the subsystem level.
The following table lists the components and subsystems covered by the
diagnostic tests.
Subsystems and Components
Subsystem Components
Power Supply
AC distribution system
DC power supply (+ 3.3, +5, +12, +15, +24 volts
DC)
Temperature
Door temperature sensor
Door heater
Chamber 1 temperature sensor
Chamber 2 temperature sensor
Chamber heater high/low
Vaporizer temperature sensor
Vaporizer heater
34 STERRAD
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NX
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Service Guide