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MCU Board
The MCU board (AMETEK Part No. 30511091S) is located below the Analog
Interface board (Figures 4-7 and 4-10).
Removing the MCU Board
•
•
Replacing the MCU Board
•
•
Figure 4-10.
MCU board connections.
PN 305804902, Rev A
Remove the Analog Interface board as described in the previous section.
Using a 1/16-inch hex wrench, remove the four (4) standoffs that secure
the MCU board in place. Unplug all connectors.
Install the new MCU board on the mounting plate using the four (4) stand-
offs removed and a 1/16-inch hex wrench.
Remount the Analog Interface board as described in the previous section.
RS-232
RS-485
Reference Valve P3-1
Battery
(Solder Side)
Sample Valve P3-3
Maintenance and Troubleshooting | 4-17
P2
RS-485
P3-1
Reference Valve
P3-3
Sample Valve
P4
RS-232
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