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Repair
7. Remove the replacement board from the
packaging. Orient it properly and place it onto
the standoffs.
8. Replace the washers and acorn nuts (AC) on
each standoff. Tighten by hand.
9. If removed, replace the 2 additional cable
connections to the power board (PB) and power
supply board (PS).
a. Replace the large green (LG) connector on
the power board. This is mounted below the
main board (MB). Note the keying features
and push into place by hand.
b. Replace the white connector (WC) on the
power supply board. This is mounted on the
inside of the controller housing. Note the
keying features and push into place by hand.
6
10. Replace connections on the main board.
a. Replace the 3 main board green connections
(G). Note the keying features and push into
place by hand.
b. Replace the 3 main board black connections
(B). Note the keying features and push into
place by hand.
c. Replace the 2 main board white ribbon
connections (W). Make sure the top of the
connector is loose by gently pulling upwards
on the connector. Push the ribbon cable into
the connector until it bottoms out. Push the
top of the connector down onto the board
until it locks. Replace the strain relief band
over the ribbon cable and connector. Verify
the ribbon cable is locked in place by gently
pulling on it.
11. When all connections are made, gently replace
the front access cover on the connector housing.
Make sure that no cables are pinched in the
process.
12. Using the Phillips head screwdriver, tighten the 4
screws holding the front access cover in place.
13. Replace the outside connections to the controller.
Connect power, turn on, and reload settings
before returning to service.
3A5188A
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