Juniper E120 - RELEASE 11.1.X HARDWARE GUIDE 3-25-2010 Hardware Manual page 10

E120 and E320 11.1.x Hardware Guide
Chapter 9
Part 4
Appendix A
Appendix B
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Table of Contents
Cleaning the System ......................................................................................70
Upgrading NVS Cards on SRP Modules ..........................................................70
Upgrading a System That Contains One SRP Module ..............................71
Upgrading a System That Contains Two SRP Modules ............................71
Replacing an NVS Card ..................................................................................72
Replacing Fan Trays ......................................................................................73
Removing an E320 Fan Tray ...................................................................74
Installing an E320 Fan Tray ....................................................................74
Installing an Air Filter ....................................................................................75
Replacing a Power Distribution Unit ..............................................................76
Troubleshooting
Diagnosing Problems ....................................................................................79
Initialization Sequence ............................................................................79
Troubleshooting Power Failures ....................................................................80
Understanding Status LEDs to Troubleshoot ..................................................80
LED Identification ...................................................................................80
LED Activity ............................................................................................83
Monitoring Temperatures of Modules ............................................................85
Resetting Line Modules and SRP Modules .....................................................86
Double-Bit Errors on SRP Modules .................................................................86
Detecting Double-Bit Errors ....................................................................87
Fixing Double-Bit Errors ..........................................................................87
Appendixes
System Specifications
E120 Broadband Services Router Specifications ............................................91
E320 Broadband Services Router Specifications ............................................93
Router Power Requirements .........................................................................94
Installation Guidelines and Requirements
Your Preinstallation Responsibilities ..............................................................97
Environmental Requirements ........................................................................97
Regulatory Compliances ................................................................................98
Safety Guidelines ...........................................................................................98
Equipment Rack Requirements .....................................................................99
Mechanical Requirements .......................................................................99
Space Requirements .............................................................................100
Proper Rack Installation ........................................................................100
Cabling Recommendations ..........................................................................101
Product Reclamation and Recycling Program ..............................................102
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