Troubleshooting The Dc Input Power Subsystem; Troubleshooting A Dc Power Module - Cisco ASR 9000 Series Installation Manual

Chapter 4 Troubleshooting the Installation

Troubleshooting the DC Input Power Subsystem

DC input power supplies 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
indicators for the version 2 power module. The indicator definitions follow the two figures.

Troubleshooting a DC Power Module

Follow these steps to troubleshoot a DC power module if it is not operating properly.
Step 1 Make sure the power module is seated properly by ejecting and reseating the power module. Check that:
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•
Make sure the router is powered on and that all power cords are connected properly. Check that the:
Step 2
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•
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Check the power supply status LED indicators:
Step 3
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shows the status indicators for the version 1 power module, and
Latch on the door/ejector lever is locked securely.
Power switch on the power tray is set to the ON (1) position.
Power cables are securely attached to their power module terminal studs.
Power cables are securely attached at the DC source end.
Source DC circuit breaker is switched on.
Input power LED (green)—Indicates that the DC power input is operating normally, and the source
DC input voltage is within the nominal operating range of –40 to –72 VDC.
If the input power LED is blinking, input connections to the power module are loose or not
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connected, or the input voltage is below the minimum. Verify that DC power from the source is
operating in the nominal range of –40 to –72 VDC.
On the DC power tray, the Power Input LED is lit solid green if both DC feeds are valid
Note
and blinks green if only a single DC feed is valid. Check the input connections to the
power module.
– If the indicator is still flashing after you perform the above checks, replace the power module.
Output power LED (green)—Indicates that the DC power output is operating normally, and the
–54 VDC output voltage to the backplane is within the nominal operating range. This indicator
lights only when the power switch at the rear of the power tray is set to the ON (1) position.
If the output power LED remains off after checking all the power sources, replace the power
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module with a spare. If the spare power module does not work, troubleshoot the power tray in
which the module is plugged.
If the output power LED is blinking, the power module is in a power limit or overcurrent
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condition. Make sure that each power cable is connected to a dedicated DC power source. Verify
that each DC power source is operating in the nominal range of –40 to –72 VDC.
Cisco ASR 9000 Series Aggregation Services Router Hardware Installation Guide
Troubleshooting the Power Subsystem
Figure 4-2 shows the status
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