MAINTENANCE
PREVENTIVE MAINTENANCE PROCEDURES
6 - 4
I-E96-607A
®
EDGE CONNECTOR CLEANING
To clean edge connector contacts:
1. Use a solvent mixture of 80% isopropyl alcohol (99.5% elec-
tronic 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 connec-
tor 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 equiva-
lent to remove tarnish or stains. Fiberglass or nylon burnish-
ing brushes may also be used.
2. Minimize electrostatic discharge by using the 80/20 iso-
propyl 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.
4. Wipe clean with a lint free cloth.
CLEANING FEMALE EDGE CONNECTORS
To clean the contacts on a female edge connector:
1. Use a foam tipped swab or a lint free cloth wrapped over a
piece of scrap circuit board. Soak the swab or cloth in elec-
tronic grade isopropyl alcohol.
2. Insert the swab or cloth covered circuit board into edge
connector and work it back and forth to clean the contacts.
3. Rinse the edge connector contacts by spraying with isopro-
pyl alcohol.
4. Remove excess alcohol and dry using compressed air.
