Juniper Networks T1600 Benutzerhandbuch

      Bottom Right Middle fan        OK         Spinning at normal speed

      Bottom Right Rear fan          OK         Spinning at normal speed

      Rear Tray Top fan              OK         Spinning at normal speed

      Rear Tray Second fan           OK         Spinning at normal speed

      Rear Tray Third fan            OK         Spinning at normal speed

      Rear Tray Fourth fan           OK         Spinning at normal speed

      Rear Tray Fifth fan            OK         Spinning at normal speed

      Rear Tray Sixth fan            OK         Spinning at normal speed

      Rear Tray Seventh fan          OK         Spinning at normal speed

      Rear Tray Bottom fan           OK         Spinning at normal speed

2.

If RHTREARTRAY-T-S is installed, order FAN-REAR-TX-T640-S and install it before
installing the three-input 240-A power supplies.

Preparing the Site

The following sections describe how to prepare your site so that you can install
upgrade components.

■

■

Most sites distribute DC power through a main conduit that leads to frame-mounted
DC power distribution panels, one of which might be located at the top of the rack
that houses the T1600 routing node. A pair of cables (one input and one return)
connects each set of terminal studs to the power distribution panel.

The DC power supply in slot 

PEM0

 must be powered by a dedicated power feed

derived from feed 

A

, and the DC power supply in slot 

PEM1

 must be powered by a

dedicated power feed derived from feed 

B

. This configuration provides the commonly

deployed 

A/B

 feed redundancy for the system.

12

■

Preparing the Site

T1600 Routing Node Upgrade Guide