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Rockwell Automation Publication 750-TG101A-EN-P - June 2022
Chapter 1 Before You Begin Tests, Maintenance, or Repairs
Inspect and Clean Circuit Board Connectors
Before you install a new circuit board, or reinstall an existing circuit board,
with XT, follow these steps to inspect and clean a receiving connector.
1. Use a bright light to inspect the receiving connector for debris or
particulate matter.
2. If there is contamination inside the connector on the receiving circuit
board, it is recommended that you replace the contaminated circuit
board.
3. If the exterior surface of the receiving connector has contamination, use
a lint-free alcohol wipe with 90% or higher alcohol content, remove
contamination away from the connector opening.
4. Allow the receiving connector to dry thoroughly before you install the
new circuit board or reinstall the existing circuit board.
Apply Dielectric Grease to an Edge Connector
If any of the following conditions exist for an edge connector on a circuit board
with XT, do not install the circuit board.
•
Debris or particulate matter is present on the greased surfaces of a
circuit board edge connector.
•
Any of the “gold finger” surfaces on the edge connector are not
completely coated with a thin layer of grease.
If the dielectric grease on a circuit board edge connector contains debris or is
removed to expose the edge connector before installation, you must
thoroughly clean and reapply PolySi PST-576 non-silicone, dielectric grease to
the affected connector.
IMPORTANT
Take care when cleaning the surface of a receiving connector to
help prevent any debris or particulate matter from entering the con-
nector.
IMPORTANT
Only PolySi PST-576 dielectric grease is approved for use on edge connec-
tors of circuit boards with XT.
