J4300 And J6300 Cooling System - Juniper J2300 Getting Started Manual

J2300, J4300, and J6300 Services Router Getting Started Guide
Table 13: J6300 Power Supply LED (continued)
State
Green
Red
For information about site power preparations, see "Power Guidelines,
Requirements, and Specifications" on page 89. For information about connecting
the router to power and ground, see "Connecting Power" on page 102.
Redundant power supplies on the J6300 are hot-removable and hot-insertable; you
can remove and replace a redundant power supply without powering down the
router or disrupting the routing functions. To avoid electrical injury, carefully follow
the instructions in "Replacing Power System Components" on page 179.
WARNING: DC-powered Services Routers are intended for installation only in
a restricted access location.

J4300 and J6300 Cooling System

The cooling system includes a fan on the rear of the Routing Engine's
processor and a fan at the front of the chassis.
The airflow produced by these fans keeps router components within the acceptable
temperature range (see Figure 14). The speed of the fan at the rear of the
processor is adjusted automatically according to current temperature.
An additional fan is part of each power supply. This fan is not
regulated by the operating system.
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J4300 and J6300 Services Router Hardware Features
Description
Power supply is working correctly.
Power supply is starting up, or has failed.