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Juniper Networks MX240 manual

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Table of contents for the manual

  • Page 1

    MX240 and MX480 Ethernet Services Router Fan Tray Installation Instructions 13 February 2008 Part Number: 530-022145-01 Revision 1 This document describes how to remove and replace the fan tray on a Juniper Networks MX240 and MX480 Ethernet Services Router. The fan tray and the air filter make up the cooling system. Contents Cooling System ........[...]

  • Page 2

    Cooling System The cooling system consists of the following components: ■ Fan tray ■ Air filter The cooling system components work together to keep all router components within the acceptable temperature range (see Figure 1 on page 2, Figure 2 on page 2, Figure 3 on page 3, Figure 4 on page 3, Figure 5 on page 4, and Figure 6 on page 4). The ro[...]

  • Page 3

    be adequately cooled, the Routing Engine shuts down the system by disabling output power from each power supply. Figure 3: Fan Tray in an MX240 Router Figure 4: Fan Tray in an MX480 Router Cooling System ■ 3 Cooling System[...]

  • Page 4

    Figure 5: Air Filter on an MX240 Router Figure 6: Air Filter on an MX480 Router Replacing the Fan Tray The router has one fan tray that installs vertically in the rear of the chassis. The fan tray contains three fans on an MX240 router and six fans on an MX480 router. The fan tray is hot-removable and hot-insertable. The fan tray is located in the [...]

  • Page 5

    To replace the fan tray, use the following procedures: ■ Removing the Fan Tray on page 5 ■ Installing the Fan Tray on page 6 Removing the Fan Tray To remove the fan tray (see Figure 7 on page 5 and Figure 8 on page 6): 1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on[...]

  • Page 6

    Figure 8: Removing the Fan Tray from an MX480 Router Installing the Fan Tray To install the fan tray (see Figure 9 on page 7 and Figure 10 on page 7): 1. 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 Electro[...]

  • Page 7

    Figure 9: Installing the Fan Tray in an MX240 Router Figure 10: Installing the Fan Tray in an MX480 Router Electrostatic Discharge Point Figure 11 on page 8 and Figure 12 on page 8 show the location of the ESD point on the rear of the chassis. The illustration shows a DC-powered router, but the location is the same in AC-powered routers. Electrosta[...]

  • Page 8

    Figure 11: Rear View of a Fully Configured DC-Powered MX240 Router Figure 12: Rear View of a Fully Configured DC-Powered MX480 Router 8 ■ Electrostatic Discharge Point MX240 and MX480 Ethernet Services Router Fan Tray Installation Instructions[...]

  • Page 9

    Preventing Electrostatic Discharge Damage Many router hardware components are sensitive to damage from static electricity. Some components can be impaired by voltages as low as 30 V. You can easily generate potentially damaging static voltages whenever you handle plastic or foam packing material or if you move components across plastic or carpets. [...]

  • Page 10

    release notes supporting JUNOS software with enhanced services. All documents are available at http://www.juniper.net/techpubs/ . Table 4 on page 15 lists additional books on Juniper Networks solutions that you can order through your bookstore. A complete list of such books is available at http://www.juniper.net/books . Table 1: Technical Documenta[...]

  • Page 11

    Table 1: Technical Documentation for Supported Routing Platforms (continued) Description Book Provides an overview of network management concepts and describes how to configure various network management features, such as SNMP and accounting options. Network Management Provides an overview of policy concepts and describes how to configure routing p[...]

  • Page 12

    Table 1: Technical Documentation for Supported Routing Platforms (continued) Description Book Describes how to access and interpret system log messages generated by JUNOS software modules and provides a reference page for each message. System Log Messages Reference J-Web User Guide Describes how to use the J-Web graphical user interface (GUI) to co[...]

  • Page 13

    Table 1: Technical Documentation for Supported Routing Platforms (continued) Description Book J-series Routing Platform Documentation Provides an overview, basic instructions, and specifications for J-series routing platforms. The guide explains how to prepare your site for installation, unpack and install the router and its components, install lic[...]

  • Page 14

    Table 2: JUNOS Software Network Operations Guides Description Book Describes the most basic tasks for running a network using Juniper Networks products. Tasks include upgrading and reinstalling JUNOS software, gathering basic system management information, verifying your network topology, and searching log messages. Baseline Describes tasks for mon[...]

  • Page 15

    Table 3: JUNOS Software with Enhanced Services Documentation (continued) Description Book Provides instructions for migrating an SSG device running ScreenOS software or a J-series router running the JUNOS software to JUNOS software with enhanced services. JUNOS Software with Enhanced Services Migration Guide Explains how to configure J-series route[...]

  • Page 16

    Table 4: Additional Books Available Through http://www.juniper.net/books (continued) Description Book Provides an overview of Multiprotocol Label Switching (MPLS) applications (such as Layer 3 virtual private networks [VPNs], Layer 2 VPNs, virtual private LAN service [VPLS], and pseudowires), explains how to apply MPLS, examines the scaling require[...]

  • Page 17

    ■ Find CSC offerings: http://www.juniper.net/customers/support/ ■ Search for known bugs: http://www2.juniper.net/kb/ ■ Find product documentation: http://www.juniper.net/techpubs/ ■ Find solutions and answer questions using our Knowledge Base: http://kb.juniper.net/ ■ Download the latest versions of software and review release notes: http[...]