Troubleshooting Pics; Troubleshooting The Power System; All Leds On Both Supplies Are Off - Juniper Internet Router M160 Hardware Manual

Troubleshooting PICs

To troubleshoot the PICs, follow these guidelines:

Troubleshooting the Power System

The following LED states indicate that a power supply is functioning correctly:
If any other LED states apply, consult the following sections:

All LEDs on Both Supplies Are Off

If all LEDs are off on both power supply faceplates, either someone has
switched off power to the 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 also goes blank.
To check the status of each port on a PIC, look at the LED located on the PIC
faceplate. For information about the meaning of LED states on different PICs,
see the M160 Internet Router PIC Guide.
To check the status of a PIC, issue the following CLI command. The PIC slots in
the FPC are numbered from
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 further description of the output from the command, see the JUNOS
Protocols, Class of Service, and System Basics Command Reference.
On the enhanced power supply, the green LED labeled
labeled are lit and the amber LED labeled
OUTPUT OK
On the enhanced power supply, the green LED labeled
labeled are lit, and the amber LEDs labeled
OUTPUT OK
are not lit.
All LEDs on Both Supplies Are Off on page 215
All LEDs on One Supply Are Off or LED States Are not Correct on page 216
Troubleshooting Hardware Components
through , top to bottom:
0 3
CB OFF
Troubleshooting the Power System
and blue LED
CB ON
is not lit.
and blue LED
CB ON
and
CB OFF NO AIRFLOW
215