4-7
CiscoASR 9000 Series Aggregation Services Router Hardware Installation Guide
Chapter4 Troubleshooting the Installation
Troubleshooting the Power Subsystem
Troubleshooting the Power Subsystem
This section contains information to troubleshoot the power subsystems:
•Troubleshooting the AC Input Power Subsystem, page4-7
•Troubleshooting the DC Input Power Subsystem, page4-12
•Troubleshooting the Power Distribution System, page4-18
Note For the RSP/RP card to communicate properly to a power module in a power tray, input power to at least
one of the three power modules in the power tray should be present.

Troubleshooting the AC Input Power Subsystem

AC input power modules are monitored for internal temperature, voltage, and current load by the
RSP/RP. If the router detects an extreme condition, it generates an alarm and logs the appropriate
warning messages on the console.
Figure 4-1 shows the status indicators for the version 1 power module, Figure4-2 shows the status
indicators for the version 2 power module, and Figure4-3 shows the status indicators for the version 3
AC power module. The indicator definitions follow the two figures.
DC Power
Modules
Power status LEDs Input power indicator on (green): Input DC power OK.
On the DC power tray, the Power Input LED is lit solid green if both DC feeds
are valid and blinks green if only a single DC feed is valid.
Output power indicator on (green): Output DC power OK.
Fault LED off (red): No fault is present.
The correct power module voltages are present and no faults have been detected.
Fan Trays Fan tray status LED Green LED on: Fan Tray OK.
The fan tray fans are operating correctly.
Table4-2 Alphanumeric Displays and LEDs at System Startup (continued)
Component Type of Indicator Display Contents/LED Status and Meaning