Remove power to the Alcatel-Lucent 1665 DMX shelf by operating the circuit breakers to the OFF position at the Battery Distribution Fuse Bay (BDFB) in the central office or removing the fuses at the BDFB.

Important!

Remove power for both A and B feeders to the shelf.

Result:

Both PWR (A) and PWR (B) LEDs on the front of the shelf extinguish.

Reference:

Refer to the user documentation for your BDFB for more information.

Disconnect the A and B power connectors from the left and right sides of the Alcatel-Lucent 1665 DMX shelf.

Using a voltmeter, measure the voltage on the power cable connectors (looking towards the BDFB) between BAT A and BAT A RTN (red cable).

Result:

Voltmeter indicates no voltage.

Using a voltmeter, measure the voltage on the power cable connectors (looking towards the shelf's backplane) between BAT B and BAT B RTN (blue cable).

Result:

Voltmeter indicates no voltage.

On the backplane, label all cables connecting to the Alcatel-Lucent 1665 DMX shelf. These include:

• Fan Shelf Power/Alarm Cable (J15)

• DS1/DS3/EC1/FastE Transmission Cables as equipped (J1, J2, J3, J4, J5, J6, J7, J8)

• IAO LAN (J16)

• Modem cable (J17)

• TL1 Interface Cable (J10)

• Sync Cables (J9 and J14)

• Office Alarm Cable (J12)

• Alarm Mult (J13)

• Miscellaneous (Environmental) Discrete (J11)

Remove all cables from the Alcatel-Lucent 1665 DMX shelf backplane. It may be necessary to untie the cables from the cable tie bar.

Important!

It is not necessary to disconnect the power cables on the backplane connectors (P15 and P14); they are internal to the shelf that is being removed.

On the front of the Alcatel-Lucent 1665 DMX shelf, label all cables connecting to circuit packs. These include:

• Optical Fibers connected to the Main OLIUs (Transmit/Receive)

• Optical Fibers connected to OC3/OC12/OC48 Low Speed OLIUs in Function Slots A, B, C, D and Growth Slots (Transmit/Receive)

• Optical Fibers connected to Gigabit Ethernet Circuit Packs in Function Slots A, B, C, D and Growth Slots (Transmit/Receive)

• LAN cable

• CIT cable

Remove all cables from circuit packs in the Alcatel-Lucent 1665 DMX shelf.

Place protective dust covers on fiber connections (fibers and circuit packs).

Note the position of each circuit pack (Function slot number or Growth slot) for reference when installing the new shelf.

Carefully remove the fibers from the Alcatel-Lucent 1665 DMX shelf fiber tray.

Disengage and remove each circuit pack and place each in an ESD protective bag.

Unscrew the mounting screws that attach the Alcatel-Lucent 1665 DMX shelf to the bay frame and remove the shelf. If your replacement shelf is a Alcatel-Lucent 1665 DMX High Capacity shelf, you must also remove the fan shelf above the standard shelf.

Important!

Do not disturb cables associated with other Alcatel-Lucent 1665 Data Multiplexer shelves in the bay or equipment in adjacent bays.

Inspect the replacement Alcatel-Lucent 1665 DMX shelf for visible damage including bent or touching backplane pins.

Determine the mounting configuration for the Alcatel-Lucent 1665 DMX shelf:

• type of bay frame (23-inch or 19-inch wide)

• mounting position (front or rear)

• position in bay (bottom to top).

Important!

The Alcatel-Lucent 1665 DMX shelf is shipped with the mounting brackets positioned for mounting to the rear of a 23-inch wide network bay frame.

The Alcatel-Lucent 1665 DMX shelf mounting brackets may have to be repositioned and remounted, depending on the frame type and mounting position (front or rear).

If necessary, reposition the shelf mounting brackets accordingly.

For 23-inch frame, front or rear mounting, refer to Figure 13-3, Alcatel-Lucent 1665 DMX mounting bracket positions - 23-inch frame.

For 19-inch frame, front or rear mounting, refer to Figure 13-4, Alcatel-Lucent 1665 DMX mounting bracket positions - 19-inch frame.

Figure 13-3: Alcatel-Lucent 1665 DMX mounting bracket positions - 23-inch frame

Figure 13-4: Alcatel-Lucent 1665 DMX mounting bracket positions - 19-inch frame

Determine the position that the Alcatel-Lucent 1665 DMX shelf will be mounted.

Figure 13-5, Typical Alcatel-Lucent 1665 DMX standard shelf bay mounting arrangements shows the recommended mounting positions for a standard shelves.

The Alcatel-Lucent 1665 DMX High Capacity shelf has an integrated fan shelf. Figure 13-9, Typical Alcatel-Lucent 1665 DMX High Capacity shelf bay mounting arrangements shows the recommended mounting positions for a high capacity shelves.

Figure 13-5: Typical Alcatel-Lucent 1665 DMX standard shelf bay mounting arrangements

Position the Alcatel-Lucent 1665 DMX replacement shelf in the frame and secure the shelf to the frame using the thread-forming screws included with the shelf (3 screws per side). Tighten the screws to 21 in.-lb. (minimum)/30 in.-lb. (maximum)

Figure 13-6, Alcatel-Lucent 1665 DMX shelf mounted to the rear of a 23-inch frame shows the Alcatel-Lucent 1665 DMX shelf being mounted to the rear of a 23-inch frame in a fully equipped Alcatel-Lucent 1665 DMX bay. The fan shelf may or may not be replaced while replacing the shelf.

Important!

Be sure to mount the shelf using the thread-forming screws provided with the shelf to ensure a solid ground connection from the bay to the shelf.

Figure 13-6: Alcatel-Lucent 1665 DMX shelf mounted to the rear of a 23-inch frame

Verify with an ohmmeter that the Alcatel-Lucent 1665 DMX shelf is grounded to the bay frame. Measure between the Alcatel-Lucent 1665 DMX shelf mounting bracket and the office ground lug on the bay frame.

Result:

The ohmmeter reads less than 1 ohm.

Ensure that both 20-ampere circuit breakers on the Alcatel-Lucent 1665 DMX shelf to the OFF position.

Important!

A small flat-bladed screwdriver or other similar type tool is required to operate the circuit breakers to the OFF position.

Reconnect the A and B power connectors to the left and right sides of the Alcatel-Lucent 1665 DMX shelf.

At the rear of the shelf, reconnect all cables based on the labels placed on them when they were removed. If your replacement shelf is a Alcatel-Lucent 1665 DMX High Capacity shelf with high density circuit packs, you must also install additional DS1 cables and/or replace existing DS3 cables with double- density DS3 cabling.

Restore power to the Alcatel-Lucent 1665 DMX shelf by operating the circuit breakers to the ON position at the Battery Distribution Feeder Bay (BDFB) or replacing the fuses at the BDFB.

Important!

Restore power for both the A and B feeders.

Operate both 20-ampere circuit breakers on the Alcatel-Lucent 1665 DMX shelf to the ON position. These breakers are located on the front of the shelf.

Result:

The fans start running and both PWR (A) and PWR (B) LEDs on the front of the shelf light.

Fully engage the SYSCTL circuit pack in the shelf.

Fully engage the M1 and M2 circuit packs in the shelf.

Starting at the left side of the shelf, fully engage each circuit pack in the shelf.

Result:

After approximately three minutes, all circuit packs have a lighted, green ACTIVE LED.

NOTICE Service-disruption hazard

Signal performance may be degraded if the connectors/adapters, fiber, and LBOs are not cleaned.

Ensure all optical fiber connectors/adapters, fiber, and LBOs are properly cleaned.

Clean and reconnect all optical fibers to the front of the optical circuit packs based on the fiber labels attached earlier and the circuit pack positions noted.

Reference:

Procedure 14-3: Clean optical fibers, dual LC adapters and LC lightguide buildouts (LBOs)

Place loose fibers in the shelf fiber tray.

Reconnect the LAN and CIT cables (if equipped) to the front of the SYSCTL circuit pack.

Connect the WaveStar^® CIT and log into the shelf.

Reference:

Procedure 14-2: Connect Personal Computer (PC) and establish WaveStar^® CIT session

From the System View window, click on Alarm List button and verify that there are no alarms, lockouts, loopbacks, or switches present.

If required, refer to the appropriate trouble clearing procedures to clear any existing alarms.

Reference:

Alcatel-Lucent 1665 Data Multiplexer (DMX) Alarm Messages and Trouble Clearing Guide, 365-372-302

End of steps