Siemens ST950 Plus+ User Manual page 148
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ST950 Plus+ User Manual
9.4.7
Heart Replacement
It may become necessary to replace the Heart fitted to a CPU card, if it becomes faulty for example
(this will be reported in the Fault Table). The steps to perform this are described in this section.
Fit New Heart
Take the CPU card and remove the SD card from the slot marked "HEART". Insert the new SD card
into the slot following the guidelines in section 9.4.6
Own Heart
Before using a new SD as a Heart it must be owned, as detailed below.
Owning the Heart Using Web Pages
Figure 68 - Web page used to own the Heart
The Heart is owned using the Controller - Heart - Ownership web page. To start the process, press
the Own Heart button. It is important to confirm that the operation is being performed on site (to
ensure that the Heart / Processor combination has been reviewed and the correct decision been
made) so it is necessary to press the Level 3 button as instructed.
Figure 69 - Request to press Level 3 button during Heart ownership sequence
ST950 Plus+ User Manual
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Issue 2
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