Alaxala AX6300S Series Instruction Manual page 175

Figure 5-6 Turning off the power
(1) Power switch
(2) Power supply unit
Step 2
Disconnect the power cable from the power supply unit you are replacing. (For
details about how to disconnect the power cable, see 4.6 Connecting and
disconnecting the power cable.)
Figure 5-7 Disconnecting the power cable
(1) Power cable
5. Adding and Replacing Optional Modules
When adding or replacing a power supply unit, disconnect the power
cable from the power supply unit that will be replaced.
If the power cable is connected and the power switch is turned off,
power is still supplied to some circuits. For this reason, adding or
replacing a power supply unit with the power cable connected could
result in fire or electric shock.
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