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Figure15. Fan control module and controller on a 7U door in a small cabinet
Complete the following steps to fit new modules to a 7U door:
1. Remove the two fastening screws and open the door.
2. Loosen the two M4 barrel nuts at the top and bottom near the door hinge, and remove the
corresponding M4 barrel nuts at the free end of the door. The sub-frame consisting of the mounting
rails at top and bottom, and the mounted blank plates or display modules can now swing free of the
door.
3. Remove or replace the display modules.
4. Re-fasten the sub-frame to the 7U door securely, using the barrel nuts.
5. Close and fasten the 7U door.
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