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SIMATIC PC BI45/FI45 PII, Technical Description
C79000-G7076-C794-03
1.4.7
Removing and Installing the Bus Board
First remove all expansion modules as described in Section 1.4.5.
Open the system unit as described in Section 1.4.1 (BI45) or Section 1.4.4
(FI45).
Remove the power supply connection from the bus board.
Release the two screws on the bus board.
Lift the bus board out of the connector to the motherboard.
To install the bus board, proceed in reverse order.
1.4.8
Removing and Installing the Fan
First remove all expansion modules as described in Section 1.4.5.
Remove the power supply connection for the fan from the motherboard
(or the SafeCard module, if present).
The fan is fastened to the system unit with four plastic rivets. Remove the
plastic rivets by pressing the pin out from behind.
Take out the fan and the metal plate to which the guide rails are attached.
Detach the plate with the guide rails by releasing the four plastic rivets.
To install the fan, proceed in reverse order.
System Unit
