Siemens ST950 Plus+ User Manual page 150

ST950 Plus+ User Manual
CIC Card Position Three
CIC 3 is reverse orientation; the spring clip is on top.
If the backplane is also removed, ensure all street cables are reconnected in the same positions.
Ensure that the SPB and SIO cables are connected in the same orientation on the replacement
backplane card.
9.4.9 Replacement of I/O Card
Replacement I/O Card
The controller should be powered down before disconnecting any RJ45 connector.
I/O cards are situated on the back panel of the controller cabinet. Disconnect the cables which are
held in place with two screws each, then the serial cables and the six mounting screws. Remove
the card and replace with the new one. Reverse the procedure to connect the new card.
9.4.10 Replacement of Intelligent Detector Backplane Card
Replacement IDB Card
The controller should be powered down before disconnecting any RJ45 connector.
The Detector Backplane card(s) is/are situated at the rear of the rack.
Generally speaking, only the Intelligent Detector Backplane card will need replacing, although the
replacement kit includes a passive Detector Backplane. They are supplied together to protect
delicate components and connections.
Remove the three nuts holding the card in place and pull away from the passive backplane.
Replace with the new card and tighten the nuts.
Reassemble and return the kit including the defective card to Siemens Poole.
ST950 Plus+ User Manual Page 150 of 176
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