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15.3 Removing a Crossbar Unit


15.3 Removing a Crossbar Unit
This section describes the procedure for removing a crossbar unit. Enable the removal of the crossbar unit before attempting to remove it. For details, follow the procedure in "Chapter 7  Maintenance Flow." 
Caution - Before you handle any components, wear a wrist strap to ground any static electricity. If you perform this procedure without a wrist strap, individual components or the overall system may be damaged. For details, see "1.5  Precautions on Static Electricity."
  1. If the crossbar cables are fixed to the cable support with the hook-and-loop fastener, remove the hook-and-loop fastener. 
  2. Remove all the crossbar cables connected to the crossbar units requiring maintenance.
  3. Loosen the two screws securing the crossbar unit.
Figure 15-2  Location of screws securing crossbar units
Figure 15-2  Location of screws securing crossbar units
  1. Open the eject levers (A in Figure 15-3) upward and downward, respectively, and then pull the crossbar unit out of the CPU memory unit.
Figure 15-3  Opening the eject levers
Figure 15-3  Opening the eject levers
  1. Support the crossbar unit from below with one hand and carefully remove it from the mounting frame.
Note - Place the removed crossbar unit on a grounded antistatic ESD mat.