Replacing The Cpu Board - Emerson FB2100 Field Replacement Manual

FB2100/FB2200 Flow Computer CPU Enclosure & Electronics Field Replacement Guide
D301803X012
November 2020

Replacing the CPU Board

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Gently slide the CPU board into its connector on the connectivity board. Make sure it is firmly
in place.
Attach the CPU board using the screws saved from when you removed it but leave the two
screws nearest the adapter board off.
Gently slide the adapter board onto its mating connector on the CPU board and move it so it
fits between the four plastic tabs on the bottom of the CPU enclosure. Now finish attaching
the CPU board using the two screws nearest the adapter board Torque all CPU board screws
to 1 to 2 in-lbs (0.1 to 0.2 N-m).
Connect the intermediate cable to its mating connector on the CPU board. Ensure that the
other end of the cable goes out the round hole in the bottom of the CPU enclosure.
If you removed the SRAM backup battery, slide it into its slot on the CPU board. Be sure to
align the positive side properly as marked on the battery housing.
Replace the CPU enclosure cover. See
Reattach the CPU enclosure to the battery compartment. See
to the Battery Compartment
Re-connect the cable between the CPU enclosure and the sensor.
Reattach the HMI module. See
Replacing the CPU Enclosure Cover (Top)
on page 9.
Replacing the HMI Module
on page 11.
Re-attaching the CPU Enclosure
on page 6.