Maintenance
Replacing the Main Board
Thermo Fisher Scientific
AutoPILOT PRO Flow Computer User Guide 11-3
5.
Place your fingers between the main board and mounting bracket, and
press the main board up to separate it from the mounting bracket.
6.
To install the new board:
a.
Align it with the standoffs on the mounting bracket. Gently press
the main board down until it snaps into place.
b.
Install the two main board screws.
c.
Install the Honeywell EPROM.
d.
Connect wiring to the main board terminal blocks.
e.
Align the main board faceplate, and secure it with the three screws.
7.
Lift the main board and mounting bracket up to expose the back of the
main board.
a.
Connect the display cable to J15 on the back of the main board.
b.
If you have the I/O expansion backplane installed, connect the
cable to J32.
c.
If the enclosure is mounted onto a Honeywell transducer, connect
the transducer cable to J25. If you removed the bracket covering
the wiring access hole in the mounting bracket, replace it.
d.
If the communication expansion board was installed, mount it onto
the new board, connecting it at J29.
8.
Return the main board and mounting bracket to the down position.
Tighten the two thumbscrews on the mounting bracket.
9.
If you installed the communication expansion board, replace the two
screws that secure it to the main board.
10.
Ensure all wiring is reconnected to the main board.
11.
Shut the enclosure door.
