Cisco GS7000 Installation And Operation Manual page 148

Chapter 5 Maintenance
3 Loosen the screws securing the module.
4 Lift the module straight up out of the housing to unplug it.
Note: Pull up on the built-in handle on a receiver module, transmitter module,
status monitor/local control module, or power supply module.
5 Position the new module in the same location and carefully slide the module into
its slot until connected to the optical interface board.
6 Tighten the screws securing the module. Torque screws to 25 to 30 in-lbs (2.8 to
3.4 Nm).
7 Carefully reconnect any optical fibers that were removed from the original
module. Clean optical connectors before reconnecting. See Care and Cleaning of
Optical Connectors (on page 134) for cleaning procedure.
8 Close the housing. See Opening and Closing the Housing (on page 122).
Important: If you are using a Local Control Module in the node be sure to press
the Auto Set-Up button on the cover of the LCM before you close the node
housing. This allows the LCM to check for, and detect, installed modules. If the
modules are not detected during this discovery process, they cannot be
monitored and controlled by the LCM. The node must be powered and the
modules operating properly in order to be detected.
9 Perform the setup procedure in Chapter 4 to verify node performance.
Optical Amplifier and Optical Switch Module Pin Adaptor
Both the EDFA optical amplifier modules and the optical switch module require the
use of a pin adaptor to be mounted in the node lid and connected to the optical
interface board.
Optical transmitters and optical receivers can only be mounted on their respective
sides in the node lid, transmitters on the right and receivers on the left. The pin
alignment on these modules is slightly different to prevent accidentally installing a
receiver in a transmitter slot or a transmitter in a receiver slot.
Since the optical amplifier and optical switch modules can be mounted on either the
left-hand or right-hand side, they require a reversible pin adaptor that can match the
pin alignment for either a transmitter or a receiver slot.
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WARNING:
Laser light hazard. Never look into the end of an optical fiber or connector.
Failure to observe this warning can result in eye damage or blindness.