SERVICE

8-12.Printed Circuit Board Edge Connector Contact CleaningMATERIALS:Lint-free cloth or equivalent (HP Part Number 9310-0039, Check Digit 3).Solution of 80% electronics-grade isopropyl alcohol and 20% water.Static-free work station.

PROCEDURE:

Dampen the cloth with the alcohol and water solution and scrub the edge connector contacts vigorously, using a circular motion. Polish one side of the board at a time until the contacts shine, keeping the cloth damp to dissolve contaminants and reduce static electricity.

Using a clean cloth, dry the contacts by wiping from their inside to outside edge. This prevents particles from building up on the contact edges.

MODEL8559A

Do not use erasers to clean the edge connectors They cause microscopic damage to the contact surface, removing the thin gold plating and exposing the nickel under-plating, which eventually corrodes. Erasers also leave a film on the contact and generatestatic electricity.

Do not use paper of any kind to clean the edge connector contacts. Paper or lint particles left on the edge contact surface can cause intermittent electrical connections.

Do not touch contact or trace surfaces with bare hands. Always handle the board by its edges.