JuniperメーカーMX-series MX240の使用説明書/サービス説明書
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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.
デバイスJuniper Juniper MX-series MX240の購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
Juniper Juniper MX-series MX240をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはJuniper Juniper MX-series MX240の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Juniper Juniper MX-series MX240の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Juniper Juniper MX-series MX240で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Juniper Juniper MX-series MX240を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はJuniper Juniper MX-series MX240の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Juniper Juniper MX-series MX240に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちJuniper Juniper MX-series MX240デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
