Maintaining and servicing your device   
7.4 Removing and installing hardware 
  SIMATIC IPC677E 
106  Operating Instructions, 04/2019, A5E45117996-AA 
7.4.6  Replacing the processor 
Requirement 
●  The device is disconnected from the mains and all connecting cables have been 
removed. 
●  The device is open, see important information regarding this under Opening the Device 
(Page 71). 
●  The memory modules have been removed. 
●  The air guide has been removed (see chapter "Replacing device fans (Page 92)"). 
●  An original spare part, i.e. a processor of the same type. 
Only an approved processor is permitted to be installed on the motherboard. 
 
If the installed processor is operated with a higher clock frequency than permitted, it can be 
destroyed or cause loss of data. 
•  Operate the processor only at a clock frequency that is equal to or less than the 
permitted clock frequency.