Juniper MX240 - UPGRADING - Page 26

Figure 20: Installing an AC Power Supply
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AC-1 OK
AC-2 OK
DC OK
PS FAIL
AC-1 OK
AC-2 OK
DC OK
PS FAIL
AC-1 OK
AC-2 OK
DC OK
PS FAIL
AC-1 OK
AC-2 OK
DC OK
PS FAIL
Protective earthing
ESD point
Power supply
ejectors
AC Power
supplies
Air exhaust
Air exhaust
NOTE: The MX960 DC power supplies protrude approximately 2 inches from
the back of the chassis. See Figure 21 on page 27.
Copyright © 2010, Juniper Networks, Inc.26
Upgrading MX240, MX480, and MX960 3D Universal Edge Router Power Supplies and Fan Trays