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Troubleshooting the Power Subsystem
Additional Power Subsystem Troubleshooting Information
Cisco XR 12410 Router Installation Guide
4-12
DCOK (green)—Indicates that the power supply is operating normally, and is
•
within the nominal operating range. This indicator lights a few seconds after
the INOK indicator lights.
If the DCOK indicator is off, replace the power supply.
–
Because there are redundant power supplies, a problem with the DC output
voltage to the backplane from only one PEM should not affect router operation.
When the router is equipped with two DC power supplies, it powers on and
operates even if one power supply fails.
This section contains additional troubleshooting information to help you isolate
the cause of a power problem.
The MBus modules powering the alphanumeric displays on the RP and line cards
are powered by +5 VDC from the backplane. The blower modules use –48 VDC
from the backplane. If both the RP and the blower modules are operating, all
internal correct DC voltages are present.
Enter the show environment command at the user EXEC mode prompt to display
temperature and voltage information for each installed card, blower module, and
PEM as shown in this example:
router#show environment
Slot #
Hot Sensor
(deg C)
1
38.0
3
36.5
5
37.0
7
36.0
16
26.0
17
27.5
18
27.0
19
0.0
20
27.0
21
28.0
22
28.0
24
47.0
29
NA
Slot #
PEM Over Temperature Sensors
Chapter 4
Inlet Sensor
(deg C)
32.5
39.0
37.0
32.0
26.0
27.5
27.5
0.0
27.5
28.0
28.0
NA
22.0
Troubleshooting the Installation
OL-13832-01
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Troubleshooting
