Siemens SIMATIC RI 45 PIII Series, Руководство пользователя

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RI 45 PIII, Manual
C79000-G7076-C817-01
1.3.12 Removing and Installing the CPU Board
Remove module supports
Remove all expansion modules and slot plates.
Disconnect all cables from the CPU board and the bus board and write
down their previous connections.
Remove the back drive support (see chapter 1.3.6)
Release the 2 screws at the back of the system unit (see arrows in
Figure 1-12), then push forward the CPU board and its baseplate until it
comes to a stop and lift it out. You can now remove the bus board if
necessary.
Mounting screws
Processor, heat sink,
processor support
Memory
submodule
Figure 1-12 Removing the CPU Board
To install the board, follow the instructions in reverse order.
The processor, memory submodules, bus board and supporting plate are not
included with the CPU board when it is supplied as a spare part.
System Unit