Juniper ERX - RELEASE 11.1.X HARDWARE GUIDE 03-23-2010 Hardware Manual page 10

ERX 11.1.x Hardware Guide
Part 3
Chapter 8
Chapter 9
x
Table of Contents
Hardware Maintenance, Replacement, and Troubleshooting
Procedures
Maintaining ERX Routers
Required Tools and Items ..............................................................................77
Storing Modules and Components .................................................................78
Cleaning the System ......................................................................................78
Upgrading from Release 5.1.1 or Lower-Numbered Releases to Release 6.x.x
or Higher-Numbered Releases ................................................................78
Upgrading NVS Cards on SRP Modules ..........................................................79
Upgrading a System That Contains One SRP Module ..............................79
Upgrading a System That Contains Two SRP Modules ............................80
Replacing an NVS Card ..................................................................................81
Upgrading Memory on SRP Modules .............................................................82
Displaying the Memory Installed .............................................................83
Removing SODIMMs ...............................................................................83
Adding New SODIMMs ...........................................................................83
Verifying the Upgrade .............................................................................85
Replacing SFPs on I/O Modules .....................................................................85
Removing SFPs .......................................................................................85
Installing SFPs .........................................................................................86
Verifying the Installation .........................................................................88
Replacing Fan Trays ......................................................................................88
Removing the Fan Tray ...........................................................................90
Installing the Fan Tray ............................................................................90
Installing a ERX14xx Model Air Filter ............................................................91
Installing a Cable-Management Bracket on ERX7xx Models ..........................92
Replacing a Power Input Module ...................................................................93
Troubleshooting
Diagnosing Problems ....................................................................................95
Initialization Sequence ............................................................................95
Troubleshooting Power Failures ....................................................................96
Understanding Status LEDs to Troubleshoot ..................................................96
LED Identification ...................................................................................96
LED Activity ..........................................................................................100
Redundancy Status ...............................................................................103
Monitoring Temperatures of Modules ..........................................................103
Resetting Line Modules and SRP Modules ...................................................104
Double-Bit Errors on SRP Modules ...............................................................104
Detecting Double-Bit Errors ..................................................................104
Fixing Double-Bit Errors ........................................................................105
77
95