M7I Power Supply Leds; M7I Cooling System Overview; Figure 16: Fan Tray; Table 7: States For The M7I Power Supply Led - Juniper M7I Hardware Manual

M7i Multiservice Edge Router Hardware Guide

M7i Power Supply LEDs

Table 7: States for the M7i Power Supply LED

Label Color
Green
OUTPUT OK
Related
Documentation

M7i Cooling System Overview

24
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
Table 7 on page 24 describes the LED on both AC and DC power supplies.
State Description
On steadily Power supply is functioning normally, input is occurring, outputs are within range,
and the temperature is within range.
Blinking Power supply is not functioning, is starting up, or is not properly inserted, or airflow
is not sufficient.
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
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

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