Instruction manual

4. Installation of the Components
133
(1) Connecting
[Step 1]
Attach the stand-by power supply cable to the stand-by power supply connector on the back face of the EPU. Insert
the connecter until you hear a click.
Figure 4-26 Attaching the Stand-by Power Supply Cable to the EPU
(1) Stand-by power supply connector (with protective cap)
(2) Stand-by power supply connector
(3) Stand-by power supply cable
Prior to attaching or detaching the stand-by power supply cable, turn off the power supply
module in the relevant slot.
The figure above shows a connection between slot 1 of EPU-A and the main device. The same
procedures are applicable to the other slots of EPU-A as well as EPU-B.
Keep the protective cap in place, except when attaching the cable. Otherwise, a fire
and/or an electric shock may be caused.
When one EPU supplies backup power to multiple devices, attach the stand-by power supply
cables to stand-by power supply connectors 2 and 3 and so on. In such cases, remove each
protective cap to connect the stand-by power supply cable. Store the removed cap somewhere
safe.