Maintenance and Troubleshooting Manual
Section 3: Meter maintenance
3-9000-764 Rev F
December 2017
Replace Backplane, I.S. Barrier or Power Supply board
43
Power Supply Board replacement
1.
If replacing the Power Supply board remove power to the meter.
2.
Refer to
for the tools required to complete this procedure.
3.
Disconnect the Transmitter Electronics Enclosure security seals, loosen the end cap
security latches with a 3mm Allen wrench and remove both end caps (
4.
Use a 1/8 inch (3 mm) flat head screw driver and remove the terminal blocks from the
Power Supply board, the CPU Module and the Optional I/O Module.
for board locations and associated terminal blocks.
5.
Use a #1Standard Phillips head screw driver and remove the four Backplane board
screws from the enclosure standoffs.
Figure 3-28 Power Supply board replacement
6.
Pull the Backplane board out of the enclosure. This disconnects the I.S. Barrier Board.
Lay the Backplane board down with the Acquisition Cable still attached (the Power
Supply board may remain attached to the Backplane when you remove it from the
enclosure).
7.
Plug the new Power Supply board and the I.S. Barrier Board onto the Backplane Board.
8.
Insert the Backplane, I.S. Barrier board and the Power Supply Board into the enclosure
and fully seat the CPU Module and Optional I/O Module.
9.
Attach the Backplane to the enclosure standoffs with the four Phillips head screws.
10.
Use a 1/8 inch (3 mm) flat blade screw driver and install the terminal blocks on the CPU
Module, Optional I/O Module, I.S. Barrier Board and the Power Supply.
A. Non-terminal end of Transmitter Electronics Enclosure
B. Power Supply board
A.
C.
B.
D.
C. I.S. Barrier board (inside the Guide Plate)
D. Backplane board
