Instruction/ maintenance manual of the product MX240 Juniper Networks
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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.
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).
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 Sys.
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.
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.
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.
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.
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 Servi.
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.
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.
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.
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.
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.
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.
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.
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.
■ 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.
An important point after buying a device Juniper Networks MX240 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Juniper Networks MX240 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Juniper Networks MX240 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Juniper Networks MX240 you will learn all the available features of the product, as well as information on its operation. The information that you get Juniper Networks MX240 will certainly help you make a decision on the purchase.
If you already are a holder of Juniper Networks MX240, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Juniper Networks MX240.
However, one of the most important roles played by the user manual is to help in solving problems with Juniper Networks MX240. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Juniper Networks MX240 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
