Fan Status Led; Power Supply Cooling System - Juniper MX204 Hardware Manual

Power Supply Cooling System

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MX204 Fan Status LED
Copyright © 2018, Juniper Networks, Inc.
The power supply modules are self-cooling and are located in the rear of the router. Each
power supply module has it's own built-in fan that cools the power supply module. The
exhaust for the power supply modules are also located on the rear of the chassis.
Maintaining the MX204 Fan Module on page 115
Maintaining the MX204 Power Supplies on page 116
Maintaining the MX204 Routing Engine on page 117
Replacing an MX204 AC Power Supply on page 97
Replacing an MX204 DC Power Supply on page 99
Replacing an MX204 Fan Module on page 95
The MX204 fan module does not have any LED—the fan status LEDs are located on the
MX204 chassis. Figure 8 on page 13
Figure 8: Fan Status LEDs on the Router
1
1— Fan status LEDs
The fan status LED is a bicolor LED.
status LED.
Table 8: Fan Status LED
Color State
Green Blinking
On steadily
Red On steadily
– Off
shows the fan status LEDs.
Table 8 on page 13
Description
Fan module hardware initialization is complete and software
initialization is pending.
Software initialization is complete and the fan is functioning
normally.
Fan module is faulty and not functioning normally.
Fan module not present
Chapter 3: Cooling System
describes the behavior of the fan
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