Chapter 6: Maintaining the System

NOTE: If the red TEMP LED is illuminated, either a critical or noncritical failure exists.

CAUTION: If the TEMP LED is illuminated and none of the fans is spinning, quickly power down the system until a new set of fans is available. Operating a system with inadequate air circulation can damage the components.

To remove a fan:

1.Unlock or loosen the fan from the system.

For the C2000 model, press the locking tab and rotate the fan away from the system.

For the C4000 model, loosen the thumb screw in the top-left and lower-right of the fan.

2.Pull the fan out and remove it from the system.

Use two hands to hold the fan after it comes out of the chassis.

WARNING: Do not place your fingers near the fans when removing the unit. The blades might still be moving.

CAUTION: Do not use the fan tray handle to carry the fan. Use the handle only to push the tray into the chassis or pull it out.

To install a fan, reverse the steps taken to remove the fan.

Removing and Installing a Power Supply Module

NOTE: If your system is powered on, see the SRC–PE CLI User Guide, Chapter 5, Using CLI Operational Commands to Monitor the SRC Software for commands to run before performing these steps.

To remove a power supply module:

1.Unplug the power cord.

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Juniper Networks C2000, C4000 manual Removing and Installing a Power Supply Module