AO845A-eA 3BSE045584R2 processor module

Printed Circuit Board Cleaning There are several circuit board cleaning procedures in this section. These procedures cover circuit board cleaning and washing, cleaning edge connectors and circuit board laminate between edge connectors. Use the procedures that meet the needs of each circuit board. Remove all dust, dirt, oil, corrosion or any other contaminant from the circuit board. Do all cleaning and handling of the printed circuit boards at static safe work stations. Always observe the steps under Special Handling in Section 3 when handling printed circuit boards

General Cleaning and Washing 

If the printed circuit board needs minor cleaning, remove dust and residue from the printed circuit board surface using clean, dry, filtered compressed air or an antistatic field service vacuum cleaner. To wash the printed circuit board: 1. Clean the printed circuit board by spraying or wiping it with isopropyl alcohol (99.5% electronic grade). Use a foam tipped swab to wipe the circuit board. 2. Remove excess solvent by using compressed air to blow it free of the circuit board.

Edge Connector Cleaning

1. Use a solvent mixture of 80% isopropyl alcohol (99.5% electronic grade) and 20% distilled water. 

2. Soak a lint-free cloth with the solvent mixture. 

3. Work the cloth back and forth parallel to the edge connector contacts.

 4. Repeat with a clean cloth that is soaked with the solvent mixture. 

5. Dry the edge connector contact area by wiping with a clean lint-free cloth.