Dielectric Grease Application (XT)
All printed circuit board renewal kits with XT contain PolySi PST-576 dielectric grease on the edge connectors (where present). All fiber-optic transceivers in renewal kits with XT contain PolySi PST- 576 dielectric grease on the internal edge connector. The dielectric grease provides corrosion resistance for the edge connector and receiving connector.
Where applicable, '(XT)' appears in the description column of the Renewal Kits tables to identify a kit that contains dielectric grease on connectors. Greased connectors are always covered on new kits.
To be sure that edge connectors on circuit boards with XT maintain corrosion resistance, do the following:
- Do not touch or remove the dielectric grease from the circuit-board edge connectors.
- Do not allow the edge connectors to contact surfaces other than the receiving connector.
- If possible, do not pull the circuit board edge connectors out of the receiving connectors after it has been fully inserted and seated.
- Inspect and clean receiving connectors, if necessary, before you install a new or existing circuit board.
- If the grease on a circuit board edge connector becomes contaminated or the edge connector surface becomes exposed, you must clean the edge connector and reapply dielectric grease.
To be sure that edge connectors on fiber-optic transceivers with XT maintain corrosion resistance, do the following:
- Do not touch the dielectric grease on the fiber-optic transceiver edge connector.
- Inspect fiber-optic transceiver connections for contamination.
- If the grease on a fiber-optic transceiver edge connector becomes contaminated or the edge connector surface becomes exposed, you must clean the edge connector and reapply dielectric grease.
To help avoid premature failure of a circuit board or fiber-optic transceiver edge connector that contains dielectric grease, do not allow the grease on the edge connectors to become contaminated with any form of debris or particulate matter.
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