TroubleshootingHardware Components
Trou ble sho oti ng PI Cs
To troubleshoot the PICs, follow these guidelines:
Tocheck the status of each port on a PIC, look at the LED located on the PIC
faceplate. For information about the meanin g of LED states on different PICs,
see the M160 Internet Router PIC Guide.
Tocheck the status of a PIC, issue the following CLI command. The PIC slots in
theFPCarenumberedfrom0through 3, top to bottom:
user@host> show chassis fpc pic-status
Slot 0 Online
PIC 0 4x OC-3 SONET, MM
PIC 1 1x CSTM1, SMIR
PIC 3 2x OC-3 ATM, MM
Slot 1 Online
PIC 0 1x OC-12 SONET, MM
PIC 1 1x OC-12 ATM, MM
PIC 2 2x OC-3 ATM, MM
PIC 3 2x OC-3 ATM, MM
For furtherdescription of the output from the command, see the JUNOS
Protocols, Class of Service, and System Basics Command Reference.
Troubleshooting the Power System
The following LED statesindicate that a power supply is functioning correctly:
On the enhanced power supply,the green LED labeled CB ON and blue LED
labeled OUTPUT OK are lit and the amber LED labeled CB OFF isnot lit.
On the enhanced power supply,the green LED labeled CB ON and blue LED
labeled OUTPUT OK are lit, and the amber LEDs labeled CB OFF and NO AIRFLOW
are not lit.
If any other LED states apply,consu ltt he followingsections:
AllLEDsonBothSuppliesAreOffonpage215
All LEDs on One Supply Are Off or LED StatesAre not Correct on page 216
AllLEDsonBothSuppliesAreOff
If all LEDs are off on both power supply faceplates, either someone has
switched off power tothe router or the system temperature has exceeded the
acceptable maximum. In the latter case, the host module shuts down both
power supplies. There is no power to the router, so the alarm LEDs on the
craft interface are not lit and the LCD alsogoes blank.
Troubleshootingthe Power System 215