Juniper MX240 Hardware Manual page 427

Monitor the green LED labeled OK above the FPC on the craft interface as soon as an FPC is seated in
an operating router.
The Routing Engine downloads the FPC software to it under two conditions: the FPC is present when
the Routing Engine boots Junos OS, and the FPC is installed and requested online through the CLI or
push button on the front panel. The FPC then runs diagnostics, during which the OK LED blinks. When
the FPC is online and functioning normally, the OK LED lights green steadily.
Make sure the FPC is properly seated in the midplane. Check that each ejector handle has been turned
clockwise and is tight.
Check the OK/FAIL LED on the FPC and OK and FAIL FPC LEDs on the craft interface. When the FPC
is online and functioning normally, the OK LED lights green steadily.
Issue the show chassis fpc command to check the status of installed FPCs. As shown in the sample
output, the value Online in the column labeled State indicates that the FPC is functioning normally:
user@host> show chassis fpc
Temp
Slot State (C)
0 Online 24
1 Empty
2 Online 41
3 Online 43
4 Online 43
5 Online 41
6 Online 43
7 Empty
8 Empty
9 Empty
10 Online 24
11 Empty
NOTE: The show chassis fpc command displays the status of the FPCs.
For more detailed output, add the detail option. The following example does not specify a slot number,
which is optional:
user@host> show chassis fpc detail
Slot 0 information:
State
CPU Utilization (%)
Total Interrupt
3 0
9 0
5 0
11 0
9 0
5 0
3 0
Memory Utilization (%)
DRAM (MB) Heap
1024 13
1024 15
1024 16
1024 16
1024 15
1024 16
1024 13
Online
Buffer
21
57
57
57
57
57
21
431