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System Unit
1.3.3
Opening the System Unit
Overview of the
Figure 1-6 illustrates the arrangement of units in the open housing of the system
Functional Units
unit:
Safe Card
Bus board
Motherboard
Fan cage
Two fans
Represented without crossbeam with retainers
Figure 1-6 SIMATIC PC RI
Opening the
First remove the screws at the top. Hold the cover at its front left and right
System Unit
edges, lift it up and off by sliding it back a little.
1-8
– motherboard together with with bus module
– SafeCard monitoring module (optional)
– 3.5" floppy disk drive and hard disk drive
– power supply
– fan cage with two fans
3.5" floppy disk drive
Rear support for
hard disk drives
(only with RI45)
Power supply
Front drive block
SIMATIC PC RI25/45, Technical Description
C79000-G7076-C808-01
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