Ac Power Supply Leds In J-Ex4200 Switches; Cooling System And Airflow In A J-Ex4200 Switch - Dell PowerConnect J-EX4200 Hardware Manual

Dell PowerConnect J-Series J-EX4200 Ethernet Switch Hardware Guide

AC Power Supply LEDs in J-EX4200 Switches

Table 14: AC Power Supply LEDs in J-EX4200 Switches
LED State and Description
AC OK Off—Disconnected from power or power is not coming into the power supply.
On—Power is coming into the power supply.
DC OK Off—Power supply is not sending out power correctly.
On—Power supply is sending out power correctly.
Related
Documentation

Cooling System and Airflow in a J-EX4200 Switch

24
Prevention of Electrostatic Discharge Damage on J-EX Series Switches on page 198
Connecting AC Power to a J-EX4200 Switch on page 117
Connecting Earth Ground to a J-EX Series Switch on page 115
The AC power supply in a J-EX4200 switch is on the rear panel. Table 14 on page 24
describes the LEDs on the AC power supplies in J-EX4200 switches.
NOTE: If the AC OK
is not installed properly or the power supply fuse has failed. If the
is lit and the
DC OK
or the power supply has an internal failure.
Power Supply in J-EX4200 Switches on page 21
Connecting AC Power to a J-EX4200 Switch on page 117
The cooling system in a J-EX4200 switch consists of a field-replaceable unit (FRU) fan
tray with three fans (see Figure 13 on page 24). The fan tray is located at the rear of the
chassis and provides side-to-rear chassis cooling (see Figure 14 on page 25).
Figure 13: Fan Tray Used in a J-EX4200 Switch
and DC OK LEDs are both unlit, either the AC power cord
LED is unlit, the AC power supply is not installed properly
AC OK LED