AT&T Map/40, Manual

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Upgrading Circuit Cards
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8. Remove the circuit card access panel and circuit card retaining bracket.
Do not lose the bracket screws, place them where you can relocate them.
See Chapter 2, ‘‘Getting Inside the Platform’’, for more information.
9. Place the MAP/40 on its side to more easily work within the circuit card
cage. Use one of the following two methods:
a. If you can disconnect incoming lines/trunks, place the MAP/40 on its
side on a work table with the support base over the table edge.
b. If you cannot disconnect incoming lines/trunks to the MAP/40, place
the MAP/40 on its side and rest the end opposite the support base
on large telephone books or similar supports.
10. Carefully remove any internal connecting cables attached to the circuit card
or peripheral to be replaced or installed. Use pull tabs when available to
reduce damage to the circuit card connector pin fields.
11. If a new card is being installed, remove the filler for the appropriate slot and
save the retaining screw.
12. Align the circuit card face plate and edge of the circuit card with the circuit
card guide and the backplane slot position.
The card is now over the expansion slot.
13. Lower the card until it touches the slot.
14. Place your thumbs flat on the edge of the card over the connector and
push it into the backplane slot.
15. Firmly push on the card until it is completely seated.
16. Re-install any internal and/or external cable assemblies that were previ-
ously removed, making sure the cable connector pin 1 indicator is mated to
the circuit card or pin header.
Refer to the appropriate circuit card chapter for additional information on
cabling and connections specific to the type of card you are installing.
17. Replace the retaining screw by placing it through the card faceplate open-
ing that is similar to the cover plate previously removed.
18. Replace the circuit card cage retaining bracket
if you have completed work
within the card cage .
19. Replace the access panel, relocate in an upright position, and remount the
chassis cover if you have completed work on the MAP/40.
20. Replace the network line/trunk connections as well as monitor, keyboard,
and power cords to the MAP/40.
21. Power up the MAP/40.