Chapter 2 Page no. 28
Publication Presentation.fm
GE Healthcare Senographe DS
Revision 1 Service Information and Procedures Class A 2385072-16-8EN
Publication Presentation
2-4-2. Procedural Instructions
• Procedural instructions are given in three types of document: Error message lists, Scenarios, and
Job Cards:
2-4-2-1 Error Message Lists
• Error message lists document messages intended for the FE. These messages can be displayed on
screen, on dedicated display panels, or stored in an error log
• Specified or suggested corrective actions are listed. These can include hypertext links to relevant Job
Cards.
2-4-2-2 Scenarios
• A scenario is a high-level description of the steps required to carry out a defined Service action, such
that:
- The context is perfectly known.
- The initial state and the final state are perfectly known.
• All the steps are identified, including preparation steps (pre-requisites) and finalization steps (post -
requisites). The steps are defined in Job Cards.
• The sequencing (order) of the steps is exactly defined. However, there can be alternative (condi-
tional) paths in the sequence.
• Scenarios contain two sections:
- Context: explains the circumstances in which the scenario must be performed.
- Steering guide: gives the exact sequence of jobs to be performed, in a tabular format.
2-4-2-3 Job Cards
• Job Cards are used to describe specified independent tasks (e.g., the installation of a specific com-
ponent, a calibration procedure, etc.).
• Job Cards include all instructions required to carry out the specified task. These can include instruc-
tions to perform other Job Cards.
• The same Job Card can be used in different contexts. For example, a Job Card specifying a calibra-
tion procedure can be carried out during installation, or after changing a component.
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