Juniper Juniper MX-series MX960 manual

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Table of contents for the manual

  • Page 1

    MX960 Ethernet Services Router DC Power Supply Installation Instructions 19 October 2007 Part Number: 530-017577-01 Revision 2 This document describes how to remove and replace a DC power supply on a Juniper Networks MX960 Ethernet Services Router. Contents DC Power Supply ............................................................................[...]

  • Page 2

    DC Power Supply In the DC power configuration, the router contains either two or four DC power supplies (see Figure 1 on page 2), located at the lower rear of the chassis in slots PEM0 through PEM3 (left to right). You can upgrade your DC power system from two to four power supplies. The DC power supplies in slots PEM0 and PEM2 provide power to the[...]

  • Page 3

    Table 1: DC Power Supply Electrical Specifications Specification Item 2800 W Maximum output power Minimum: – 40 VDC Nominal: – 48 VDC Operating range: – 40 to – 72 VDC NOTE: If the input voltage from the DC power source drops below -37.5 to -39.5 VDC, the routing platform automatically shuts down. During automatic shutdown, the circuit rema[...]

  • Page 4

    Replacing a DC Power Supply To replace a DC power supply, use the following procedures: ■ Removing a DC Power Supply on page 4 ■ Installing a DC Power Supply on page 7 Removing a DC Power Supply The power supplies are located at the rear of the chassis. Each DC power supply weighs approximately 3.8 lb (1.7 kg). CAUTION: Do not leave a power sup[...]

  • Page 5

    Figure 2: Disconnecting Power Cables From the DC Power Supply 6. Remove the cable lugs from the terminal studs. 7. Loosen the captive screw on the cable restraint on the lower edge of the power supply faceplate. 8. Carefully move the power cables out of the way. 9. While grasping the handle on the power supply faceplate with one hand, use your othe[...]

  • Page 6

    Figure 3: Removing a DC Power Supply Figure 4: Top of the Power Supply Showing Midplane Connector 6 ■ Replacing a DC Power Supply MX960 Ethernet Services Router DC Power Supply Installation Instructions[...]

  • Page 7

    Installing a DC Power Supply To install a DC power supply, follow this procedure (see Figure 5 on page 9): 1. Ensure that the voltage across the DC power source cable leads is 0 V and that there is no chance that the cable leads might become active during installation. CAUTION: You must ensure that power connections maintain the proper polarity. Th[...]

  • Page 8

    ■ Attach the positive (+) DC source power cable lug to the RTN (return) terminal. ■ Attach the negative ( – ) DC source power cable lug to the – 48V (input) terminal. NOTE: The DC power supplies in slots PEM0 and PEM1 must be powered by dedicated power feeds derived from feed A , and the DC power supplies in slots PEM2 and PEM3 must be powe[...]

  • Page 9

    Figure 5: Installing a DC Power Supply Replacing a DC Power Supply ■ 9 Replacing a DC Power Supply[...]

  • Page 10

    Figure 6: Connecting DC Power to the Router List of Technical Publications Table 3 on page 10 lists the software and hardware guides and release notes for Juniper Networks J-series, M-series, MX-series, and T-series routing platforms and describes the contents of each document. Table 4 on page 15 lists the books included in the Network Operations G[...]

  • Page 11

    Table 3: Technical Documentation for Supported Routing Platforms (continued) Description Book Describes how to use the JUNOS command-line interface (CLI) to configure, monitor, and manage Juniper Networks routing platforms. This material was formerly covered in the JUNOS System Basics Configuration Guide . CLI User Guide Provides a detailed explana[...]

  • Page 12

    Table 3: Technical Documentation for Supported Routing Platforms (continued) Description Book Provides an overview and describes how to configure Layer 2 and Layer 3 virtual private networks (VPNs), virtual private LAN service (VPLS), and Layer 2 circuits. Provides configuration examples. VPNs JUNOS References Describes the JUNOS configuration mode[...]

  • Page 13

    Table 3: Technical Documentation for Supported Routing Platforms (continued) Description Book Describes how to use the commit script and self-diagnosis features of the JUNOS software. This guide explains how to enforce custom configuration rules defined in scripts, how to use commit script macros to provide simplified aliases for frequently used co[...]

  • Page 14

    Table 3: Technical Documentation for Supported Routing Platforms (continued) Description Book Describes the JUNOScope software graphical user interface (GUI), how to install and administer the software, and how to use the software to manage routing platform configuration files and monitor routing platform operations. JUNOScope Software User Guide A[...]

  • Page 15

    Table 3: Technical Documentation for Supported Routing Platforms (continued) Description Book Summarize new features for a particular release, identify known hardware and software problems, provide information that might have been omitted from the manuals, and provide upgrade and downgrade instructions. JUNOS Enhanced Services Release Notes Table 4[...]

  • Page 16

    Table 5: 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[...]