Marquee ACON Ultra Installation/Operation Guide
D-11
46. Take the second 81753-01 PCB (to be installed in 3
rd
slot) from the package and record its serial number.
Remove 2 nuts and the bezel.
Disconnect the ribbon cable, shift it to the left and
connect it as shown. Press firmly to seat.
47. Remove the shunt from ST5 (bare pins are exposed).
Ensure there is a shunt on ST6.
48. Install PCB in the third slot and install 1 screw to
secure.
49. Install a bezel over the BNCs on the third PCB.
CAUTION: The nuts and BNCs must not be
crossthreaded.
Install a nut on BNCs 1 and 3, and tighten nuts.
Note: A 14mm or 9/16in deep socket fits in the space
available.
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