Gasboy CFN Series Diagnostic Manual - Manual (Page 407)

CFN Islander
12/26/02 13-39
KEY INTERFACE PCB (C05159)
The Key interface PCB acts as a buffer between the key receptacles and the reader terminal
CPU. The key interface PCB:
•
provides an interface between two key receptacles and the reader terminal CPU PCB
•
provides ESD (electrostatic discharge) protection for the key interface lines
•
controls selection of and power to the key receptacles
Layout