Network Router User Manual

Power supplies are hot-removable and hot-insertable, as described in “Field-Replaceable
Units (FRUs)” on page 3. To avoid electrical injury, carefully follow the instructions
in “Replacing an AC Power Supply” on page 107 and “Replacing a DC Power
Supply” on page 112.
NOTE: After powering off a power supply, wait at least 60 seconds before turning it
back on. After powering on a power supply, wait at least 60 seconds before turning
it off.
If the router is completely powered off when you power on the power supply, the
Routing Engine boots as the power supply completes its startup sequence. If the
Routing Engine finishes booting and you need to power off the router again, first
issue the CLI request system halt command. For more information, see “Disconnecting
AC Power from the Router” on page 111 or “Disconnecting DC Power from the
Router” on page 117.
After a power supply is powered on, it can take up to 60 seconds for status
indicators—such as LEDs on the power supply and show chassis commands—to
indicate that the power supply is functioning normally. Ignore error indicators that
appear during the first 60 seconds.
See the following sections for further information about power system components:
■ AC Power Supply on page 20
■ DC Power Supply on page 21
■ Power Supply LED on page 22
AC Power Supply
An AC-powered router has two or more load-sharing AC power supplies, located at
the bottom rear of the chassis, as shown in Figure 2. For information about power
supply redundancy and replaceability, see “Power Supplies” on page 19.
Figure 7 shows the power supply and Table 11 on page 21 lists electrical specifications.
For information about the LED, see “Power Supply LED” on page 22.
20 ■ Power Supplies
M10i Internet Router Hardware Guide