Upgrade To The Six-Input Dc Power Supplies; Upgrade The Fan Trays - Juniper T4000 Hardware Manual

Upgrade to the Six-Input DC Power Supplies

Upgrade the Fan Trays

Copyright © 2018, Juniper Networks, Inc.
To upgrade to the six-input DC power supply:
NOTE: This procedure does not apply to T640 or T1600 routers with AC
power supplies. In that case, both AC power supplies must be powered off
and removed before the DC power supplies are installed.
Verify that the number of inputs that you plan to connect to the 6-input DC power
1.
supply provides sufficient power for your planned configuration for the T4000 router.
NOTE: For the Junos OS Release 12.1 and 12.2, a minimum of five inputs
for each power supply is required. Connecting only four inputs to each DC
power supply in a T4000 router is not currently supported.
Remove one of the existing power supplies. For information about removing T640 or
2.
T1600 components, see the T640 Core Router Hardware Guide or T1600 Core Router
Hardware Guide.
Install one six-input DC power supply.
3.
Connect the DC power cables to the six-input DC power supply.
4.
Repeat the procedure for the other power supply.
5.
To upgrade the fan trays:
Upgrade the front fan trays.
1.
Upgrade the rear fan tray, if needed. FAN-REAR-TXP-LCC rear fan tray is required.
2.
Install the FAN-REAR-TXP-LCC rear fan tray, if not already installed.
Chapter 25: Upgrading to a T4000 Router From a T640 or T1600 Router
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