PIONEER MAGNETICS PM3398B-6P-1-3P-E 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 listed 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. Another method of washing the printed circuit board is: 1. Clean the printed circuit board by spraying it with isopropyl alcohol (99.5% electronic grade) or wiping the board with a foam tipped swab wetted in isopropyl alcohol. 2. When the circuit board is clean, remove excess solvent by using compressed air to blow it free of the circuit board.

EDGE CONNECTOR CLEANING

 To clean edge connector contacts: 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. To clean tarnished or deeply stained edge connector contacts: 1. Use an Eberhard Faber (400A) pink pearl eraser or equivalent to remove tarnish or stains. Fiberglass or nylon burnishing brushes may also be used. 2. Minimize electrostatic discharge by using the 80/20 isopropyl alcohol/water solution during burnishing. 3. Do not use excessive force while burnishing. Use only enough force to shine the contact surface. Inspect the edge connector after cleaning to assure no loss of contact surface.