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Cisco 10008 Router PRE4 Installation and Configuration Guide
OL-13840-01
Installing or Replacing a PRE4
Step 5
See the
“Installing or Replacing a PRE4” section on page 11
for instructions on how to install a new
PRE.
Note
If you are not installing a replacement PRE, install a blank faceplate in the slot.
Warning
Do not operate the system unless all slots contain a PRE4, line card, or a blank faceplate. Blank
faceplates are necessary in empty slots to prevent exposure to hazardous voltages, to reduce
electromagnetic interference (EMI) that may disrupt other equipment, and to direct the flow of cooling
air through the chassis.
Step 6
Power on the system if you have powered it off.
Troubleshooting the Installation
Refer to
and
for descriptions of the LEDs on the PRE4. Follow the instructions in
to troubleshoot the installation.
Table 6
PRE4 Installation Troubleshooting
If these troubleshooting procedures do not correct the problem, refer to the
for additional information.
Symptom
Possible Cause
Corrective Action
PEMs, fans, and other line cards
do not operate
1.
Disconnected power cord.
2.
Power switch is in the Off
position.
3.
The PRE4 fuses are blown.
1.
Check that all power cords
are properly connected to
both the chassis and at the
power connection end.
2.
Set the PEM power
switches to the On
position.
3.
Replace the PRE4.
The FAIL LED does not light
during the power-on self-test
1.
The PRE4 is not properly
seated.
2.
Bad PRE4 slot or backplane
connector.
1.
Be sure the ejector levers
are fully closed and that
the captive screws have
been tightened.
2.
Remove the PRE4 and
install it in another PRE4
slot.
PRE4 does not operate properly
1.
Bad PRE4 slot or backplane
connector.
2.
Bad PRE4.
1.
Remove the PRE4 and
install it in another PRE4
slot.
2.
Replace the PRE4.