Panasonic KX-PS8100 Operating Instructions Manual page 67

Setup
Setting the terminator
The default setting of the scanner is set to OFF and that of the printer is set
to ON.
The terminator setting can be changed by using the terminator switch
(scanner:#4, printer:#1). To set it, use a pointed object like a pen (do not
use a pencil).
Terminator ON:
Terminator OFF:
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