4.3.3 Changing Crossbar Cables
4.3.3 Changing Crossbar Cables
When subsequently adding expansion rack 2, you need to change the connections of crossbar cables. This work is not necessary during the initial installation.
- Mount a crossbar unit in XBBOX#80/#81.a. Remove the one screw (B in Figure 4-20) securing the blank panel.b. Remove the blank panel (A in Figure 4-20) from slot #2, where the crossbar unit is to be installed.c. Insert the crossbar unit into slot #2. The crossbar unit is supplied with expansion rack 2.d. Close the left and right levers of the crossbar unit, and tighten two screws (A in Figure 4-21).
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- Move the crossbar cables of XBBOX#80/#81.a. Remove the crossbar cables from L4 to L7 and from R4 to R7 of XBU#1 (see Figure 4-22). Hold the pull-tab (A in Figure 4-23) of the crossbar cable, and pull it straight in the direction of the arrow to remove the cable.
Note - Do not pull it out with a hold on the cable. Doing so prevents the connector lock from being completely released, causing damage. |
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- b. Replace the labels on the removed cables. The replacement labels are supplied with expansion rack 2. Referring to Table 4-1, replace the labels.
Before Change | After Change | |||
---|---|---|---|---|
XB80-XBU1-L4 | Pink | -> |
XB80-XBU2-L0 | Pink |
XB80-XBU1-L4 | Black | -> |
XB80-XBU2-L0 | Black |
XB80-XBU1-L5 | Pink | -> |
XB80-XBU2-L1 | Pink |
XB80-XBU1-L5 | Black | -> |
XB80-XBU2-L1 | Black |
XB80-XBU1-L6 | Pink | -> |
XB80-XBU2-L2 | Pink |
XB80-XBU1-L6 | Black | -> |
XB80-XBU2-L2 | Black |
XB80-XBU1-L7 | Pink | -> |
XB80-XBU2-L3 | Pink |
XB80-XBU1-L7 | Black | -> |
XB80-XBU2-L3 | Black |
XB80-XBU1-R4 | Light blue | -> |
XB80-XBU2-R0 | Light blue |
XB80-XBU1-R4 | Black | -> |
XB80-XBU2-R0 | Black |
XB80-XBU1-R5 | Light blue | -> |
XB80-XBU2-R1 | Light blue |
XB80-XBU1-R5 | Black | -> |
XB80-XBU2-R1 | Black |
XB80-XBU1-R6 | Light blue | -> |
XB80-XBU2-R2 | Light blue |
XB80-XBU1-R6 | Black | -> |
XB80-XBU2-R2 | Black |
XB80-XBU1-R7 | Light blue | -> |
XB80-XBU2-R3 | Light blue |
XB80-XBU1-R7 | Black | -> |
XB80-XBU2-R3 | Black |
XB81-XBU1-L4 | Pink | -> |
XB81-XBU2-L0 | Pink |
XB81-XBU1-L4 | Black | -> |
XB81-XBU2-L0 | Black |
XB81-XBU1-L5 | Pink | -> |
XB81-XBU2-L1 | Pink |
XB81-XBU1-L5 | Black | -> |
XB81-XBU2-L1 | Black |
XB81-XBU1-L6 | Pink | -> |
XB81-XBU2-L2 | Pink |
XB81-XBU1-L6 | Black | -> |
XB81-XBU2-L2 | Black |
XB81-XBU1-L7 | Pink | -> |
XB81-XBU2-L3 | Pink |
XB81-XBU1-L7 | Black | -> |
XB81-XBU2-L3 | Black |
XB81-XBU1-R4 | Light blue | -> |
XB81-XBU2-R0 | Light blue |
XB81-XBU1-R4 | Black | -> |
XB81-XBU2-R0 | Black |
XB81-XBU1-R5 | Light blue | -> |
XB81-XBU2-R1 | Light blue |
XB81-XBU1-R5 | Black | -> |
XB81-XBU2-R1 | Black |
XB81-XBU1-R6 | Light blue | -> |
XB81-XBU2-R2 | Light blue |
XB81-XBU1-R6 | Black | -> |
XB81-XBU2-R2 | Black |
XB81-XBU1-R7 | Light blue | -> |
XB81-XBU2-R3 | Light blue |
XB81-XBU1-R7 | Black | -> |
XB81-XBU2-R3 | Black |
- c. Connect crossbar cables to L0 to L3 and to R0 to R3 of XBU#2.
Mount the cables according to the labels.
Hold the connector of the crossbar cable, and insert it straight into the opening.
Do not hold the cable or its pull-tab part when inserting it.
Note - If you insert a connector with the pull-tab pulled, the connector may be damaged. |
Note - There are three types of crossbar cable (optical). Connect crossbar cables of the same type to the same port numbers. You can distinguish the type of crossbar cable by the pull-tab shape (A in Figure 4-15). |
Note - A loose crossbar cable connection may, on rare occasions, cause an error due to poor connection. After connecting a crossbar cable, push it in again so that it is tightly in place to prevent any improper connection. Do not hold only the fiber optic cable when performing the work at this time. Otherwise, the fiber optic cable may bend out of shape. For details, see step 4 in "4.3.2 Crossbar Cable Connections via a Crossbar Box." |
- Move the crossbar cables of BB#04 to BB#07.a. Remove the crossbar cables from 1L and 1R of XBU#0/XBU#1.
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- b. Replace the labels on the removed cables.
The replacement labels are supplied with expansion rack 2. Referring to Table 4-2, replace the labels.
Before Change | After Change | |||
---|---|---|---|---|
BB04-XBU0-1L | Pink | -> |
BB04-XBU0-2L | Pink |
BB04-XBU0-1L | Black | -> |
BB04-XBU0-2L | Black |
BB04-XBU0-1R | Light blue | -> |
BB04-XBU0-2R | Light blue |
BB04-XBU0-1R | Black | -> |
BB04-XBU0-2R | Black |
BB04-XBU1-1L | Pink | -> |
BB04-XBU1-2L | Pink |
BB04-XBU1-1L | Black | -> |
BB04-XBU1-2L | Black |
BB04-XBU1-1R | Light blue | -> |
BB04-XBU1-2R | Light blue |
BB04-XBU1-1R | Black | -> |
BB04-XBU1-2R | Black |
BB05-XBU0-1L | Pink | -> |
BB05-XBU0-2L | Pink |
BB05-XBU0-1L | Black | -> |
BB05-XBU0-2L | Black |
BB05-XBU0-1R | Light blue | -> |
BB05-XBU0-2R | Light blue |
BB05-XBU0-1R | Black | -> |
BB05-XBU0-2R | Black |
BB05-XBU1-1L | Pink | -> |
BB05-XBU1-2L | Pink |
BB05-XBU1-1L | Black | -> |
BB05-XBU1-2L | Black |
BB05-XBU1-1R | Light blue | -> |
BB05-XBU1-2R | Light blue |
BB05-XBU1-1R | Black | -> |
BB05-XBU1-2R | Black |
BB06-XBU0-1L | Pink | -> |
BB06-XBU0-2L | Pink |
BB06-XBU0-1L | Black | -> |
BB06-XBU0-2L | Black |
BB06-XBU0-1R | Light blue | -> |
BB06-XBU0-2R | Light blue |
BB06-XBU0-1R | Black | -> |
BB06-XBU0-2R | Black |
BB06-XBU1-1L | Pink | -> |
BB06-XBU1-2L | Pink |
BB06-XBU1-1L | Black | -> |
BB06-XBU1-2L | Black |
BB06-XBU1-1R | Light blue | -> |
BB06-XBU1-2R | Light blue |
BB06-XBU1-1R | Black | -> |
BB06-XBU1-2R | Black |
BB07-XBU0-1L | Pink | -> |
BB07-XBU0-2L | Pink |
BB07-XBU0-1L | Black | -> |
BB07-XBU0-2L | Black |
BB07-XBU0-1R | Light blue | -> |
BB07-XBU0-2R | Light blue |
BB07-XBU0-1R | Black | -> |
BB07-XBU0-2R | Black |
BB07-XBU1-1L | Pink | -> |
BB07-XBU1-2L | Pink |
BB07-XBU1-1L | Black | -> |
BB07-XBU1-2L | Black |
BB07-XBU1-1R | Light blue | -> |
BB07-XBU1-2R | Light blue |
BB07-XBU1-1R | Black | -> |
BB07-XBU1-2R | Black |
- c. Connect crossbar cables to 2L and 2R of XBU#0/XBU#1.
Mount the cables according to the labels.
Connect crossbar cables to the crossbar unit.
Hold the connector of the crossbar cable, and insert it straight into the opening.
Do not hold the cable or its pull-tab part when inserting it.
Note - If you insert a connector with the pull-tab pulled, the connector may be damaged. |
Note - A loose crossbar cable connection may, on rare occasions, cause an error due to poor connection. After connecting a crossbar cable, push it in again so that it is tightly in place to prevent any improper connection. Do not hold only the fiber optic cable when performing the work at this time. Otherwise, the fiber optic cable may bend out of shape. For details, see step 4 in "4.3.2 Crossbar Cable Connections via a Crossbar Box." |
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