Nortel SONET AccessNode User Manual page 145

Procedure 7-16 (continued)
Replacing an NT7E05 OC-12 VTBM optical interface
Step
11
12
13
14
15
16
AccessNode Modular Business Package VTBM Ring User Guide P0904244 Issue 1.0
Replacing modules in a common-equipment shelf 7-43
Action
Remove the circuit pack from the shelf.
Wait at least 15 seconds before installing the replacement card. Without
engaging the replacement circuit pack with the backplane connector, install
the circuit pack in the shelf. Ensure that there is no power to the circuit pack
(no LEDs lit).
CAUTION
Possible damage to biconic connectors
If you are re-connecting biconic connectors in step 13 and
step 14, prevent friction between optical lenses by gently
lifting up on the fiber during the last half turn of the
connector.
Re-connect the optical patchcord or pigtail to the transmit connector on the
replacement circuit pack.
Re-connect the optical patchcord or pigtail to the receive connector on the
replacement circuit pack.
Gently push the replacement circuit pack until the ejector latches come in
contact with the shelf. Then push the latches in toward the circuit pack to
engage the circuit pack with the backplane connector.
Carefully dress the cables in the shelf fiber guides.
—continued—