Rear Of The Processing Unit - JRC JMA-5104 Instruction Manual

9.3.3 Rear of the processing unit

(Fuse)
For modulator Sub-indicator unit output/sub-keyboard
J9 (option setting)
For indicator unit For motor
J1 J2 J4 J6 J7
DC Power-On To scanner unit Keyboard Display unit (signal + power)
J3 J5 J8
Input from GPS receiver/ GPS compass/ Output to PC plotter
NMEA equipment NSK equipment /other NEMA equipment