Maintenance and service 
  11.1 Removing and installing hardware components 
SIMATIC Box PC 627 
Operating Instructions, Release 05/2006, A5E00362052-03 
11-7 
11.1.4  Installing / removing the bus board 
Preparation 
1.  Disconnect the device from mains and unplug all cables. 
2.  Open the device. 
Removing the bus board 
 
How to remove the bus board 
1  Remove all modules from their slots.   
2  Remove the drive bay module for 
hard disks and DVD-ROM/CD-RW. 
 
3  Remove the power supply cover: 
Unscrew 5 screws (1). 
 
4  Remove the power supply module.   
5  Remove the 3 screws (1) on the bus 
board.