ADC HiGain HMS-318 List 3 User Manual page 52

Appendix C: Circuit Card Preventive Measures
Circuit Card Ejector Tab or Built-in Thumb Hold
Most circuit cards have an ejector tab that is used to assist the installer in inserting and removing each circuit card.
These ejector tabs are typically located at either the top or bottom of the circuit card. Other types of circuit cards
have a built-in thumb hold for gripping the card. Follow the procedure given to remove and insert a circuit card.
Removing Circuit Card
Contacting circuit card components or traces can result in an electrical shock even after removal
DANGER
from the shelf.
Wear properly grounded anti-static wrist-straps when removing a circuit card. At all other times
(shipping, storage, and so on) keep the circuit cards in their protective bags.
ATTENTION
Step
1 Remove any front-panel cables from the circuit card.
Note:
2 Grasp the circuit card at the top or bottom ejector tab or the built-in thumb hold and pull forward to release
it from its connection. A slight amount of force may be required to unseat the circuit card.
Inserting Circuit Card
Wear properly grounded anti-static wrist-straps when inserting a circuit card. At all other times
(shipping, storage, and so on) keep the circuit cards in their protective bags.
ATTENTION
Step
1 Holding the circuit card by its ejector tab or built-in thumb hold, insert into the shelf housing. Ensure that
the circuit card connection is firmly seated.
2 Attach any front-panel cables to the circuit card.
Note: To prevent confusion, it is sometimes important for the installer to note in which slot each circuit card
resides and in which connector each cable resides.
C-2
Note the positions of all cables and slots each circuit card resides in for later replacement.
Action
Action
December 20, 2004
LTPH-UM-1261-01