Honeywell PX940 Installation Instruction page 5

9. Insert the Applicator Interface Board into the printer and secure the board
assembly to the printer with two torx screws.
10. Secure the interface board assembly to the spacer screw with a Torx screw.
11. Insert the USB cable and power cable into the J37 and J33 connectors on
the printer main board. Then insert the other ends into the J1 and J2
connectors on the Applicator Interface Board.
12. Put the electronics cover back on and secure it with the 4 screws.
4 PX940 Applicator Interface Installation Instructions