Heart Of The Controller - Siemens ST950 Handbook

Fuses
There are a number of user replaceable fuses present on the board that provide
protection where power supplies from the system leave the board to power the
users equipment.
F1 – Handset – 500mA Quick blow
F2 – Aux RS232 Modem power supply output – 500mA Quick blow
The replacement fuse for F1 and F2 is Siemens part number 518/4/97070/004. This
part number calls up the holder and fuse. Remove the fuse and discard the holder.
4.4

Heart of the Controller

The heart of the Controller uses an SD card to provide transferable storage for
controller firmware, configurations and logs.
Should it need to be removed or replaced the following procedure should be
followed:
Power down the controller.
Unplug connectors and slide the CPU card free of the rack so that the top edge of
the card can be accessed.
Push the card into the socket slightly until it 'clicks' then release pressure. The card
can now be pulled from the socket.
To insert a card, align it with the socket with the contacts facing PCB and closest to
the socket. Slide it into the socket and apply slight pressure until it 'clicks'. The card
is now located correctly. The photos below show the correct orientation for the card.
Note: It is important that the card is not write protected. The 'lock' switch must be in
the position shown in the diagram below:
Security classification
Version
Last Editor
Document Name
Copyright © Siemens Mobility Limited 2018. All Rights Reserved.
When replacing a fuse it is important to fit the correct type for continued
protection of the ST950 CPU Card and users equipment.
The formatting of the card is such that it is not readable in a PC. There
are no user files accessible on the card.
SD card Write Enable switch position
Unrestricted
5
Neil Atkinson
ST950 ICM Handbook
Intelligent Traffic Systems
Sopers Lane, Poole, Dorset, BH17 7ER
Page 35 of 125
Status Issued
Date 18-Dec-2018
Document No. 667/HE/46950/000