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IRECTION GB091046, REVISION 2     VIVID E9 / VIVID E7 BT’13 SERVICE MANUAL 
Chapter 5 - Components and functions (theory) 5 - 11
5-3-6 System configuration and software
System configuration is stored on a hard disk drive inside the Back End Processor.
At power up, all necessary software is loaded from the hard disk drive.
5-3-7 The electronics
VIVID E9 / VIVID E7 internal electronics are divided into two card cages:
• Front End Processor (FEP) 
The FEP is sometimes called “Front End Card Cage”, “Front End”, or only “Card Cage”.
• Back End Processor (BEP)