A A
BC B
crossbarbox requiring maintenance.
2. Removethe front cov er of the crossbarbox.
For details, see "5.5.3 Removing the front cover."
3. Removeall thefan units.
For details, see "19.4.2 Removinga fan unit."
4. Loosenthe two screws (A in the figure) securing the upper cover and then
slidethe right and left stoppers (B in the figure) inwards. Then, remove the
uppercover (Cin the figure).
Figure23-2 Removingthe upper cover
5. Loosenthe one screw (A in the figure) securing the lower cover and then
slidethe lower cover tothe left toremove i t.
Chapter23 Maintainingthe Operation Panel of the Crossbar Box 371