Gasboy CFN Series Diagnostic Manual - Manual (Page 264)

GASBOY CFN Series
7-28 1310
P2 - RS-422 Communication to Customer Display
P3 - Power Supply Input
Switches
SW1 - Miscellaneous Switches
TEST In the closed position and with the CPU interface ribbon cable disconnected, the VF driver
will begin displaying a rotating barber-pole pattern self-test. In the open position, the VF
driver will function normally.
MSTR In the closed position, The VF driver will transmit characters through its serial interface
while simultaneously displaying them. In the open position, the characters are only
displayed. NOTE: This switch must be closed when a customer display is connected to
the console.
SLAV In the closed position, the VF driver will display all characters received through its RS-422
interface. In the open position, the VF driver will display characters received through its
parallel interface. NOTE: This switch must be open when the VF driver is used in the
console.