Hi !
Please check the alarms : "show chassis alarms"
It will give you some idea.
Additionally refer this link :
https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/chassis-mx10003mpc-rate-select-configuring.html
Regardless of the line card— MIC (PIC1) or fixed-port PIC (PIC0) installed —you must configureboth the PICs and all the associated ports, under the [edit chassis] hierarchy. Configuring ports on only one of the PICs results in an invalid configuration.
Please configure below command.
set chassis fpc 0 pic 1 number-of-ports 0
Commit the conifg and reboot the FPC.
After the FPC boots up ; collect these command:
show chassis alarms
show chassis fpc pic-status
show chassis pic pic-slot 0 fpc-slot 0
show chassis pic pic-slot 1 fpc-slot 0
Regards
Arpit