Instruction manual

5. Adding and Replacing Optional Modules
124
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.
Step 3
Loosen the screws of the power supply unit.
Figure 5-8 Removing a power supply unit (1)
(1) Screws
Step 4
Remove the power supply unit. (Pull the unit a little way toward you while holding
the handles and supporting the bottom of the unit.)