•
DC Power Electrical Safety Warnings for M Series, MX Series, and T Series Routers on
page 150
•
M7i DC Power Electrical Safety Guidelines on page 149
•
Replacing a DC Power Supply on page 111
M7i Power Supply LEDs
Table 7 on page 24 describes the LED on both AC and DC power supplies.
Table 7: States for the M7i Power Supply LED
Description
State
Color
Label
Power supply is functioning normally, input is occurring, outputs are within range,
and the temperature is within range.
On steadily
Green
OUTPUT OK
Power supply is not functioning, is starting up, or is not properly inserted, or airflow
is not sufficient.
Blinking
Related
Documentation
Installing an M7i AC Power Supply on page 108
•
•
M7i Power System Description on page 21
•
Replacing an M7i AC Power Supply on page 106
•
Troubleshooting the M7i Power System When the LED on One M7i Power Supply Is Off
on page 81
M7i Cooling System Overview
The router cooling system consists of a fan tray, located along the left side of the chassis,
that provides side-to-side cooling (see Figure 17 on page 25). It connects directly to the
router midplane. The fan tray is a single unit containing four individually fault-tolerant
fans. If a single fan fails, the remaining fans continue to function indefinitely.
The fan tray is hot-removable and hot-insertable.
Figure 16: Fan Tray
Copyright © 2010, Juniper Networks, Inc.
24
M7i Multiservice Edge Router Hardware Guide
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