Siemens SCALANCE X-400 Operating Instructions Manual page 78

Installation and Commissioning
Removing the Twisted Pair Extender from the S7-300 Rail
You require the following tools:
● slotted screwdriver with a 2.8 mm wide blade
● slotted screwdriver with a 5.5 mm wide blade
When removing a twisted pair extender from an S7-300 rail, the basic device re-
mains in position. Follow the steps below:
1. To remove an extender module, remove the two covers on the extender.
2. Using a slotted screwdriver with a 5.5 mm wide blade, open the captive screw
between slots 12 and 13 in the lower part of the extender module.
3. Remove the cover from slot 11 of the basic device.
4. Use a slotted screwdriver with a 2.8 mm wide blade to loosen the two captive
slug screws on slot 11 of the basic device in the upper and lower recesses as
far as they will go.
5. Push the extender module slowly to the right while keeping it straight until the
two guide bolts of the extender module are completely outside the holes in the
basic device.
6. Pull out the lower part of the extender module slightly towards the front and lift
it from the S7-300 rail.
7. Replace the right side panel of the basic device so that the guide bolts fit into
the two holes in the basic device.
8. Using a slotted screwdriver with a 2.8 mm wide blade, tighten the two captive
slug screws on slot 11. The screws lock the two guide bolts, so do not use ex-
cessive force when tightening them.
9. Fit a suitable cover on slot 11 of the basic device.
Note
The basic device must not be used permanently without the right side panel.
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Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches
C79000-G8976-C186-03