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Device maintenance and repair
7.3 Removing and installing hardware
Processor type and clock frequency
If you use a processor of a different type, perform the BIOS update firstly. During the BIOS
update, the microcode matching the processor is loaded. Contact the SIEMENS support to
update the BIOS if you changed a different processor.
Note
Damage to the processor due to high clock frequency
If the installed processor is operated with a higher clock frequency than permitted, it can be
destroyed or cause data loss.
Operate the processor only at a clock frequency that is equal to or less than the permitted
clock frequency.
7.3.6
Replacing the motherboard
Requirement
• The device is fully disconnected from the line voltage, see "Switching off the device
(Page 40)".
• The device is open, see important information in "Open the device (Page 44)".
• An original spare part, that is a motherboard of the same type.
The motherboard as spare part is supplied without processor and memory modules.
• Note that the firmware settings as the configuration data of the device is deleted when
the motherboard is replaced.
You can find information on this in the detailed firmware/BIOS description, see BIOS
description (Page 83).
• Screwdriver T10 for fixing screws of the motherboard
Procedure
1. Remove the unnecessary modules from the slots, for example, the expansion card.
2. Note the assignment of all cables to the motherboard.
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Operating Instructions, 10/2020, A5E50059993-AA
SIMATIC IPC347G
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