MAINTENANCE
STANDARD PREVENTIVE MAINTENANCE PROCEDURES
5 - 4 I-E96-192-5A
®
Cleaning the Operator Keyboard
To clean the operator keyboard:
1. Wipe away dust with a soft lint free cloth.
2. Clean dirt and film from the keyboard using a mild all pur-
pose commercial spray cleaner and lint-free cloth.
Cleaning the Engineering Keyboard
To clean the engineering keyboard:
1. Use a static safe vacuum cleaner to remove dust from the
keyboard.
2. Clean the key caps and keyboard enclosure with an all
purpose commercial spray cleaner and lint free cloth. Do not
spray into the keyboard. Apply cleaner to the cloth only.
Cleaning the Printed Circuit Boards
There are several circuit board cleaning procedures in this sec-
tion. These procedures cover circuit board cleaning and clean-
ing 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 proper electro-
static sensitive device handling precautions 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 sur-
face 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 or wiping the
board with isopropyl alcohol (99.5% electronic grade). Use a
foam tipped swab to wipe the circuit board.
2. When the circuit board is clean, remove excess solvent by
using compressed air to blow it free of the circuit board.
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