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Troubleshooting
This chapter provides troubleshooting information for the Cisco uBR7225VXR universal broadband
router and contains the following sections:
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Overview
This chapter contains instructions to help installers and technicians troubleshoot hardware installation.
Figure 6-1
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:
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OL-17309-01
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
shows the general troubleshooting strategy used to troubleshoot the hardware. Refer to this
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
Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
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C H A P T E R
6-1
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Table of Contents
Troubleshooting
