01/2007
2.3 MCI board extension slot variant
2-56
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
Screws of the
cover of the housing
Fig. 2-8 Cover of the housing of the PCU 50.3
4. Remove the fastening screw of the module holding–down device (Fig. 2-9)
of the MCI board and remove the module holding–down device.
Board
retainer
Fixing screw
Plastic
support
Fig. 2-9 Mounting of the module
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.
2 Hardware Descri
tions
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