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.
