Juniper Networks MX240 manual Replacing DPCs and Transceivers, Replacing a DPC, Removing a DPC

MX240 Ethernet Services Router Hardware Guide

Connecting the Cable to a Management Console or Auxiliary Device

To connect a serial cable to a management console or auxiliary device:

1.Plug the RJ-45 end of the replacement serial cable into the CONSOLE or AUX port. Figure 47 on page 104 shows the external device ports on the Routing Engine.

2.Plug the female DB-9 end into the console or auxiliary device's serial port.

3.Turn on the power to the console or auxiliary device.

Replacing DPCs and Transceivers

For instructions on replacing DPCs and SFP and XFP transceivers, see the following sections:

■Replacing a DPC on page 106

■Removing an SFP or XFP Transceiver on page 110

■Installing an SFP or XFP Transceiver on page 112

Replacing a DPC

DPCs are installed horizontally in the front of the router. The DPCs are hot-insertable and hot-removable. When you remove a DPC, the router continues to function, although the DPC being removed no longer functions. Before replacing a DPC, review the information in “Holding a DPC” on page 75. A DPC weighs up to 13.1 lb (5.9 kg). Be prepared to accept its full weight. To replace a DPC:

■Removing a DPC on page 106

■Installing a DPC on page 108

Removing a DPC

To remove a DPC (see Figure 49 on page 108):

1.Have ready a replacement DPC or DPC blank panel and an antistatic mat for the DPC. Also have ready rubber safety caps for each DPC you are removing that uses an optical interface.

2.Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. For more information about ESD, see “Preventing Electrostatic Discharge Damage” on page 130.

3.Label the cables connected to each port on the DPC so that you can later reconnect the cables to the correct ports.

4.Use one of the following methods to take the DPC offline:

■Press and hold the corresponding DPC online button on the craft interface. The green OK LED next to the button begins to blink. Hold the button down until the LED goes off.

■Issue the following CLI command:

106■ Replacing DPCs and Transceivers