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CHAPTER
6-1
Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
OL-17309-02
6
Troubleshooting
This chapter provides troubleshooting information for the Cisco uBR7225VXR universal broadband
router and contains the following sections:
• Overview, page 6-1
• Problem Solving with Subsystems, page 6-2
• Power Subsystem, page 6-4
• Cooling Subsystem, page 6-4
• Processor Subsystem, page 6-5
• Verifying the Downstream Signal, page 6-7
Overview
This chapter contains instructions to help installers and technicians troubleshoot hardware installation.
Figure 6-1 shows the general troubleshooting strategy used to troubleshoot the hardware. Refer to this
flow chart as necessary and follow the steps to isolate hardware problems to a specific subsystem.
For cable-specific commands for the Cisco uBR7225VXR universal broadband router, refer to the
Cisco IOS CMTS Cable Command Reference Guide at the following URL:
http://www.cisco.com/en/US/docs/ios/cable/command/reference/cbl_book.html
Resolve the problem if possible or contact the Cisco Technical Assistance Center.
Providing Information
If you are contacting Cisco TAC or your customer service representative, provide the following
information:
• Date you received your Cisco uBR7225VXR universal broadband router
• Chassis serial number
• Type of software and release number
• Brief description of the problem you are having
• Brief explanation of the steps you have taken to isolate and resolve the problem
• Maintenance agreement or warranty information