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Cisco uBR10012 Universal Broadband Router Hardware Installation Guide
OL-18259-09
Chapter 4 Troubleshooting the Installation
Troubleshooting the Power Subsystem
3.3v Normal 3.29v
Fan: OK
Power Entry Module 0 type AC status: OK // AC PEM is displayed //
Power Entry Module 1 type DC status: OK
Try one of the following:
•
Upgrade to a supported Cisco IOS Release and then press the PRODUCT ID LED/switch.
•
Reload the software or physically remove the DC PEM module for at least 1 minute and then reinsert
it.
Step 6
Use the
show environment
command to display the general health of the power system:
Router#
show environment
Temperature normal: chassis inlet measured at 29C/84F
Temperature normal: chassis core measured at 42C/107F
Fan: OK
Power Entry Module 0 type DC status: OK
Power Entry Module 1 type DC status: OK
Router#
Verify that the temperatures are within the valid operating ranges, and that the fan assembly and both
DC PEM modules are present and OK. If this is not the case, check for the following actions:
a.
Fan is reported MISSING—Insert the fan assembly or shut down the router immediately to avoid
running the router beyond its operating temperature range.
b.
DC PEM is not listed—Verify that both DC PEMs are present, and if so, that each PEM is fully
inserted into the chassis.
c.
An “External AC Supply Fault” message indicates that one of the power modules in the external
power supply is reporting either a fault, an over-temperature condition, or is missing. Check the
LEDs on the front panels of the power modules on the external power supply to discover which
module has the fault.
Note
When using the external AC-input power shelf, the
show environment
command provides information
on whether a power module in the power shelf is missing, is reporting a fault, is experiencing an
over-temperature condition, or is not receiving AC-input power. For information on the external
AC-input power shelf and on connecting it to the DC PEM, see
Cisco uBR10012 Universal Broadband
Router Hardware Installation Guide
.
Step 7
Check to see if the DC power source supplying the proper power to the DC PEMs? (If you are using the
2400W AC-input power shelf, look to verify that the AC OK and DC OK LEDs are illuminated for each
of the AC power supplies.)
a.
If no, and if the DC power source is connected to a valid power outlet, troubleshoot the DC power
source.
b.
If yes, turn off the DC power source and remove the DC PEM from the chassis. Verify that the DC
power source is correctly wired to the terminal blocks underneath each PEM. See the
“Connecting
DC Power to the Cisco uBR10012 Router” section on page 3-34
for details.
Step 8
If none of the above suggestions correct the problem, the DC PEM could be faulty. Contact a service
representative for further instructions. See the
“Obtaining Documentation and Submitting a Service
Request” section on page vi
.
