Juniper Networks T1600 - Manual (Page 12)

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.
■ Typical Power Distribution on page 12
■ Provisioning Additional Power for the T1600 Routing Node on page 13
Typical Power Distribution
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.
Figure 6 on page 13 shows a typical DC source cabling arrangement.
12 ■ Preparing the Site
T1600 Routing Node Upgrade Guide