Nordson ProBlue 1028303 Instruction Sheet page 11

CAUTION: Before removing the new circuit board from its
anti-static bag, ground yourself by touching any bare-metal
part of the chassis or another grounded structure. Failure to
properly ground yourself can cause electrostatic discharge
resulting in damage to the board.
6.
Slide the main circuit board assembly
out of the electrical enclosure.
7.
(Optional) If the melter is configured for
six hoses/guns, disconnect the ribbon and
power cable that connect the main board and
the 6-hose extension board, and then remove
the extension board.
8.
(Optional) Assemble the extension board
to the new main circuit board assembly, and
then reconnect the power cable (J10 to J2)
and the ribbon cable (J5 to J1).
9.
Slide the new circuit board assembly into
the electrical enclosure, and then secure the
assembly with the Phillips-head screw and
matching and washers.
10.
Connect the voltage plug and all cables
(TB1, TB2, J6, J7, and J8) to the new circuit
board, and then close the electrical enclosure
door.
11.
Restore electrical power to the melter
and then switch the melter on. Verify that the
melter starts normally.