Removing and Inserting Fabric Interconnect F1-4 I/O Modules
The Fabric Interconnect F1-4 I/O Modules contain a locking mechanism (a quarter-turn Pawl) that is built-in to the module's handle. The lock is used to secure the module in place while it is inserted in the chassis, and has been designed with enough resistance that it cannot be unlocked or completely locked with your fingers. As a result, the module's handle is slotted to accept a screwdriver, which you will need to use to generate enough torque to lock or unlock the module. To perform this procedure, you will need a large slotted screwdriver.
 | Caution - When using the screwdriver to lock or unlock an I/O Module, make sure not to dull or mar the slot in the I/O Module's handle. Also, if you apply excessive force, it might be possible to over-rotate the handle, which will skew the I/O module's open and closed positions. When using the screwdriver to lock or unlock an I/O Module, make sure to apply only enough force to move the locking mechanism, and rotate the handle only enough to unlock or lock the module. |
The I/O module lock operates in a 90-degree arc, and the slot in the handle indicates the position of the module's lock. See Figure 1, Table 1, I/O Module Lock Positions for handle positions for the locking I/O Modules.