Gasboy CFN Series Diagnostic Manual - Manual (Page 349)

Site Controller III
1116 12-15
SITE CONTROLLER III MEMORY I/O PCB
The Site Controller III Memory I/O PCB (C05839):
•
provides the battery-backed RAM for the storage of all transaction and system data
•
provides lithium batteries for data retention during power failures
•
provides additional RS-232 ports and dual Tokheim port 3
Layout
Connector
P1 CPU PCB Interface
Pins A1 – A32
Pinout Pin Function Voltage
A1 +5VDC +5VDC
A2 +5VDC +5VDC
A3 W/R – Read Enable  0VDC – Read
A4 PB9  +5VDC – ON
A5 MBSEL – Memory Board Select  0VDC – ON
A6 BUSSEL – Not used, grounded on Memory PCB 0VDC – Normal
A7 N/C N/C
A8 N/C N/C
A9 N/C N/C
A10–A25 GND – DC Ground DC Ground
A26 N/C N/C
A27 N/C N/C
A28 IPL0  +5VDC – ON
A29 IPL1  +5VDC – ON
A30 BGACK  0VDC – ON
A31 BG  0VDC – ON
A32 BR  0VDC – ON