Instruction manual

4. Installation of the Components
153
(2) Power Off
Turn off the main switch of the EPU to shut off all backup power supply to the device.
[Step 1]
Turn off the power supply modules.
[Step 2]
When all power supply modules are switched off, turn off the main switch on the back face of the EPU.
4.13.2 EPU-B
(1) Power On
[Step 1]
Turn on the main power switch on the back face of the EPU.
Figure 4-52 Power On (Main Body of the EPU)
(1) Main power switch
Check the cable connection on the back face of the EPU and switch off the power supply
module to stop.
When the main switch of the EPU is turned off, all backup power supply to the device is
shut off. When backup power is still supplied to the device, do not turn off the main switch
of the EPU.
Prior to turning on the main switch of the EPU, make sure all power switches of the mounted
power supply modules are turned off.