Thermo Scientific AutoPILOT PRO User Manual page 115

Maintenance
Replacing the Main Board
Figure 11–1. Replacing the main board, step 1
11-2 AutoPILOT PRO Flow Computer User Guide
2. With the main board and mounting bracket lifted, you can access the
back of the main board.
a. If you have the communication expansion board installed, place
your fingers between the main board and its mounting bracket and
onto the communication expansion board. Press the expansion
board out to disengage it from the main board connector (reference
Figure 5–5).
b. Disconnect the display cable from J15 on the back of the main
board.
c. If you have the I/O expansion backplane installed, disconnect its
cable from the main board at J32.
d. If the enclosure is mounted directly onto a Honeywell transducer,
disconnect the transducer's 10-pin connector from the main board
at J25. You may need to remove the bracket from the wiring access
in the mounting bracket (reference
3. Return the main board and mounting bracket to the down position.
4. Ensure all wiring and connections to the main board are disconnected.
Figure 3–4).
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