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Before Opening
Before opening the unit, you should read the following rules carefully:
the Unit
Tools
Use a suitable crosstip or TORX screwdriver to remove or install
components.
SIMATIC PC BI45/FI45 PII, Technical Description
C79000-G7076-C794-03
Before you disconnect the power supply cable, discharge any electrostatic
charge on your body. You can do this by touching metallic parts, such as
screws, on the rear panel of the PG.
Discharge any electrostatic charge from tools that you are using.
Wear a grounding wrist strap if you are handling components.
Leave components and modules in their packaging until you are ready to
install them.
Disconnect the PC from its power supply before plugging in or removing
any modules or components.
Touch components and modules only on their edges. Above all, do not
touch the connecting pins and printed conductors.
Do not operate the PC with the cover open.
System Unit
1-9
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