User Manual

ADCP-75-136 • Issue 1 • November 2002
Page 58
© 2002, ADC Telecommunications, Inc.
3. Disconnect the DC power cable connector from the RJ-45 power jack on the DRU front
panel.
Note: Disconnecting the power from the DRU will create an alarm condition. Inform the
NOC or alarm monitoring system operator that the alarm will be reported.
4. Disconnect the optical fiber connectors from the optical transceiver and place a dust cap
over each connector.
5. Release the optical transceiver from the transceiver socket by pulling outward on the
release lever (if type A) or release tab (if type B) as shown in Figure 34.
17285-A
TYPE A
TRANSCEIVER
TYPE B
TRANSCEIVER
RELEASE
LEVER
RELEASE TAB
TRANSCEIVER COLOR CODE
BLUE = SINGLE-MODE (9 MICRON)
BLACK/
BEIGE = MULTI-MODE (50 OR 62.5 MICRON)
Figure 34. DRU Optical Transceiver Removal
6. Remove the optical transceiver from the transceiver socket.
7. For replacement, select an optical transceiver that corresponds to the type of fiber
(single- or multi-mode) used in the installation. The color of the transceiver corresponds
to the fiber type (see Figure 34).
8. Remove the optical transceiver from the anti-static packaging and orient for installation
as shown in Figure 35.
Note: Two types of optical transceivers, type A and type B, are available. Both types
provide the same functionality. On the type A optical transceiver, the release lever (see
Figure 34) must be closed for installation.