JUNOS Internet Software Network Operations Guide: Hardware
356 ! Verifying SFM Failure
Another indication that a fuse has blown is that the colored indicator bulb inside it
becomes visible through the clear cover on the fuse. For information about the
indicator bulb color for each fuse type, see the appropriate router hardware guide.
A blown fuse can cause a component to fail even though it is correctly installed and
the power supplies are functioning. Check for a blown fuse in the following
circumstances:
! The LED that indicates normal operation for the component fails to light.
! The appropriate CLI show chassis environment command indicates that the
component is installed but is not receiving power.
Step 3: Perform an SFM Swap Test
Action To perform a swap test on an SFM, follow these steps:
1. Remove the chassis rear component cover by loosening the screws on the
corners of the cover and pulling it straight out from the chassis.
2. Remove the SFM, as described in the M40e and M160 router hardware guides.
3. Take the SFM offline by doing one of the following:
! Use the following CLI command:
user@host> request chassis sfm slot slot-number offline
! Press and hold the offline button on the SFM faceplate at the rear of the
router until the SFM OK LED turns off (about 5 seconds).
4. Replace the SFM with one that you know works.
5. Bring the SFM online by doing one of the following:
! Use the following CLI command:
user@host> request chassis sfm slot slot-number online
! Press and hold the offline button on the SFM faceplate until the green OK
LED lights (about 5 seconds).
6. Reinstall the rear component cover and tighten the screws to secure it to the
chassis.
7. Check the SFM status. See “Display the SFM Summary Status” on page 349.
CAUTION: Before performing a swap test, always check for bent pins in the
midplane and check the SFM for stuck pins in the connector. Pins stuck in the
component connector can damage other good slots during a swap test.
To Next Page
Loading...
Need help?
General
