Instruction manual

5. Adding and Replacing Optional Modules
134
Figure 5-19 Checking the STATUS LED
(1) Basic control unit
(2) STATUS LED
Step 2
Turn off the basic control unit if the power is being supplied (execute the Inactivate
operation).
NOTE
For details about the Inactivate operation, see 11 Switch Management
in the Software Manual Configuration Guide Vol. 1.
Step 3
Loosen the screws of the basic control unit.