User manual JUNIPER NETWORKS E120 RELEASE 11.1.X HARDWARE GUIDE 3-25-2010

[. . . ] E SeriesTM Broadband Services Routers E120 and E320 Hardware Guide Release 11. 1. x Juniper Networks, Inc. 1194 North Mathilda Avenue Sunnyvale, California 94089 USA 408-745-2000 www. juniper. net Published: 2010-03-25 Juniper Networks, the Juniper Networks logo, JUNOS, NetScreen, ScreenOS, and Steel-Belted Radius are registered trademarks of Juniper Networks, Inc. in the United States and other countries. JUNOSe is a trademark of Juniper Networks, Inc. All other trademarks, service marks, registered trademarks, or registered service marks are the property of their respective owners. [. . . ] 2. Locate the grounding studs on the router (Figure 27 on page 54). Remove the nuts and locking washers from the grounding studs. 54 Cabling the Router for Power Chapter 5: Cabling the Router NOTE: We recommend a minimum of 6-AWG ground wire with a ring-style terminal. Place the grounding cable lead on one of the grounding studs and tighten the nuts to secure the connection. Connect the other end of the ground cable to the appropriate ground termination lead. Repeat Steps 3­4 for the remaining grounding stud. 3. 5. NOTE: When grounding the router, leave a service loop in the grounding cable to ensure that the grounding cable is the last cable to disconnect from the shelf if strain is placed on the electrical cables. Task 3: Connect the Power Cables To connect power cables to the router, follow these steps. See Figure 27 on page 54 as needed. NOTE: Juniper Networks has qualified an AC power supply unit for use with the router. Contact your account representative for more information. WARNING: Before you begin this procedure, be sure the power source is turned off, the router is turned off, and proper grounding wires are attached. Be sure you have completed "Task 1: Turn Off All Router Power" on page 54 and "Task 2: Connect the Grounding Cables" on page 54. If applicable, loosen the screws from the clear power input module cover and remove it. 1. 2. WARNING: The wiring color code of the power cables depends on the color coding of the DC power source installed at your site. Color code standards for DC wiring do not exist. To ensure that the correct polarity is connected to the router power units, confirm the connection of the power cables to the + (positive) and ­ (negative) leads at the power source. NOTE: Loosen the top and bottom thumbscrews (using a No. 2 Phillips screwdriver, if necessary) Cabling the Router for Power 55 E120 and E320 11. 1. x Hardware Guide 3. 8. Remove the nuts and locking washers from the posts for the power input (A or B) using a small insulated adjustable wrench. Place one negative (neutral) cable lead on the post labeled ­48 VDC. Replace the locking washers and nuts, and tighten the nuts to secure the connection. Place the other cable lead on the post labeled RTN. Replace the locking washer and nut, and firmly tighten the nut to secure the connection. Attach the opposite end of Power A's wire leads to the appropriate leads on your power source. NOTE: To provide redundancy, do not use the same power source for Power A and Power B leads. Place the clear plastic guard over the terminal posts, and secure it in place by tightening the four screws. 9. 10. Repeat Steps 1­9 for each power input module in your configuration. The Next Step See "Powering Up the Router" on page 57. 56 The Next Step Chapter 6 Powering Up the Router This chapter describes how to power up the router and determine whether it has booted properly. [. . . ] ID labels are usually applied near the ejector. Fan trays are not listed in the show hardware command output. You must remove the fan tray bezel to view the serial number ID label. 114 Locating Component Serial Numbers Appendix D: Contacting Customer Support and Returning Hardware Figure 36: Representative Module Serial Number ID Label Information You Might Need to Supply to JTAC When requesting technical support from the JTAC by phone, be prepared to provide the following information: Priority level Indication of what activity was being performed on the router when the problem occurred Problem detail and configuration data, obtained by these commands: show version show hardware show environment show configuration When a new request for technical support is submitted, the JTAC engineer: 1. 4. Opens a case and assigns a number. [. . . ]