The FIC or PICs are not functioning normally.
To troubleshoot the FIC or PICs:
The following example specifies an FPC slot number (0), which is optional.
user@host> show chassis fpc pic-status
0Slot 0 Online PIC 0 2x OC-3 ATM, MM PIC 1 2x CT3-NxDS0 PIC 2 2x OC-3 ATM, MM
For further description of the output from the command, see the Junos OS System Basics and Services Command Reference.