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Maintaining MX240 Components

 

Routine Maintenance Procedures for the MX240 Router

Purpose

For optimum router performance, perform preventive maintenance procedures.

Action

  • Inspect the installation site for moisture, loose wires or cables, and excessive dust. Make sure that airflow is unobstructed around the router and into the air intake vents.

  • Check the status-reporting devices on the craft interface—System alarms and LEDs.

  • Inspect the air filter at the left rear of the router, replacing it every 6 months for optimum cooling system performance. Do not run the router for more than a few minutes without the air filter in place.

Tools and Parts Required to Maintain the MX240 Router

To maintain hardware components, you need the following tools and parts:

  • ESD grounding wrist strap

  • Flat-blade (–) screwdriver

  • Phillips (+) screwdriver, number 1

  • Phillips (+) screwdriver, number 2

MX240 Field-Replaceable Units (FRUs)

Field-replaceable units (FRUs) are router components that can be replaced at the customer site. Replacing most FRUs requires minimal router downtime. The router uses the following types of FRUs:

  • Hot-removable and hot-insertable FRUs—You can remove and replace these components without powering off the router or disrupting the routing functions.

  • Hot-pluggable FRUs—You can remove and replace these components without powering off the router, but the routing functions of the system are interrupted when the component is removed.

Table 1 lists the FRUs for the MX240 router. Before you replace an SCB or a Routing Engine, you must take the host subsystem offline.

Table 1: Field-Replaceable Units

Hot-Removable and Hot-Insertable FRUs

Hot-Pluggable FRUs

  • Air filter

  • Craft interface

  • Backup Switch Control Board (SCB) (if redundant)

  • Primary Switch Control Board (SCB) (if nonstop active routing is configured)

  • Backup Routing Engine (if redundant)

  • Primary Routing Engine (if nonstop active routing is configured)

  • Dense Port Concentrators (DPCs)

  • Flexible PIC Concentrators (FPCs)

  • Modular Port Concentrators (MPCs)

  • Modular Interface Cards (MICs)

  • PICs

  • AC, DC, and HVDC/HVAC power supplies (if redundant)

  • Fan tray

  • Primary Switch Control Board (SCB) (if nonstop active routing is not configured)

  • Primary Routing Engine (if nonstop active routing is not configured)

  • Switch Control Board (SCB) (nonredundant)

  • Routing Engine (nonredundant)

  • Solid-state drives (SSDs) of Routing Engines

Tools and Parts Required to Replace MX240 Hardware Components

To replace hardware components, you need the tools and parts listed in Table 2.

To remove components from the router or the router from a rack, you need the following tools and parts:

  • 2.5-mm flat-blade (–) screwdriver, for detaching alarm relay terminal block

  • 7/16-in. (11 mm) nut driver

  • Blank panels to cover empty slots

  • Electrostatic bag or antistatic mat, for each component

  • Electrostatic discharge (ESD) grounding wrist strap

  • Flat-blade (–) screwdriver

  • Mechanical lift, if available

  • Phillips (+) screwdrivers, numbers 1 and 2

  • Rubber safety cap for fiber-optic interfaces or cable

  • Wire cutters

Table 2: Tools and Parts Required to Replace Hardware Components

Tool or Part

Components

2.5-mm flat-blade (–) screwdriver

  • Alarm relay terminal block

7/16-in. nut driver or socket wrench

  • Cables and connectors

  • DC power supply

Blank panels (if component is not reinstalled)

  • DPC

  • FPC

  • MIC

  • MPC

  • PIC

  • Power supply

  • Routing Engine

  • SCB

Electrostatic bag or antistatic mat

  • Craft Interface

  • SCB

  • DPC

  • FPC

  • PIC

  • MPC

  • MIC

    • Routing Engine

Electrostatic discharge (ESD) grounding wrist strap

All

Flat-blade (–) screwdriver

Cables and connectors

DPC

Phillips (+) screwdrivers, numbers 1 and 2

Air filter

Routing Engine

Craft interface

SCB

Cables and connectors

Fan tray

Rubber safety cap

DPC

PIC

MPC

MIC

Wire cutters

Cables and connectors

DC power supply