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System Unit
1.4
Removing and Installing Components
Prerequisites
The system unit is designed to enable any necessary maintenance work to be
carried out quickly and at low cost.
Warning
!
Please read the warnings at the front of the User's Guide before you open the
housing of the system unit.
Caution
!
Risk of damage to the unit!
Note that only qualified personnel should be allowed to work on the open
unit, so the warranty on the device is not affected. Authorized SIEMENS
maintenance and repair centers offer you a specialist maintenance service.
The User's Guide contains the addresses.
Caution
!
The electronic components of the printed boards are extremely sensitive to
electrostatic discharge. When handling the boards, you must take appropriate
safety precautions. These are set out in the guidelines for electrostatically
sensitive components (ESD guidelines) at the end of this manual.
Limitation of
All technical specifications and licenses apply only to expansion functions
Liability
approved by SIEMENS. No liability can be assumed for functional
constraints caused by the use of devices and components of other
manufacturers.
The following sign warns that electrostatically sensitive modules are present.
Please read the ESD guidelines.
1-8
Do not open the housing unless you need to install or remove
components, or to replace the battery.
Write down your configuration parameters before starting the procedure.
SIMATIC PC BI45/FI45 PII, Technical Description
C79000-G7076-C794-03
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