2 Hardware Descriptions
2.3 MCI board extension
Fixing the MCI board
Screws of the cover of the housing
Cover of the housing of the PCU 50
4. Remove the fastening screw of the module holding-down device (Fig. 2-8) of
the MCI board and remove the module holding-down device.
5. Remove the blanking plate of the free PCI slot.
6. Insert the module carefully but firmly into the PCI slot and tighten the con-
nector plate of the module.
7. Plug the connector of the connecting cable into the MCI board. Make sure
that the latches of the connectors have securely engaged on both modules.
– MCI board: Interface X2
– MCI board extension: Interface X4
8. Mount the module holding-down device again.
9. Close the housing and fix it again with the two housing screws.
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SINUMERIK 840Di Manual (HBI) – 06.03 Edition