Panasonic FP-D250 User Manual page 237

(CN22)
Pin Signal
Destination
No. Name
Printer control
1 3.3V
PCB S1-1
Printer control
2 GND
PCB S1-2
Printer control
3 GND
PCB S1-3
Printer control
4 5V1
PCB S1-4
(CN23)
Not used
4-116
(FP-D250/D350 Series)
Status Function
3.3V
DC+3.3V power supply
0V
0V Ground
0V Ground
5.1V
DC+5.1V power supply
0V