Gasboy CFN Series Diagnostic Manual - Manual (Page 304)

GASBOY CFN Series
8-12 0021
P7 - RS-422, PIN Pad Lamps, Paper Advance Switch
Epson CPU PCB Jumpers
Jumpers on the CPU PCB are only used to set the type of RAM (U16) and usually do not need to
be set in the field.
K1 & K2
K3 - RAM Type
Epson CPU PCB Switches
S1 - Reset Switch
The Reset switch starts a hardware and software reset of the CPU PCB. The S2 switch settings
are read when a reset occurs (and at power up). This switch should be pressed whenever switch
settings are changed while power is on.