User’s Manual for Node G
Network Elements
Page 48
M0121A2A.doc
Use an appropriate tool to fasten and unfasten these. Do not over tighten the
connectors or screws. The table below shows various screws with their respective
torques.
Screw Type Tallow-Drop Socket Head Cap Countersunk Head
Thread Size Specified Torque (in Ncm)
M 2.0 40 not in use 40
M 2.5 82 not in use 82
M 3.0 145 100 145
M 4.0 330 330 330
M 5.0 650 tbd. 650
table 5-1 Specified torques for various screw types
) Note: Depending on the configuration of the Node G the FRU can be
equipped with a 50 Ω termination resistor. In such a case, use the
termination resistor of the old FRU to terminate the respective
connector of the replacement part.
) Note: After the replacement of a component, check whether the system
has to be levelled anew.
) Note: Do not forget to reinstall the front cover after the replacement
procedure to ensure safe operation.
If any FRU not contained in the following chapter needs to be replaced, contact
customer service for additional instructions.
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