Maintaining Power Supplies - Juniper Internet Router M160 Hardware Manual

Maintaining Power Supplies

To verify that the power system is functioning normally, perform
the following procedures regularly:
Slot 1 information:
State
SPP Temperature
SPR Temperature
Total CPU DRAM
Total SSRAM
Internet Processor II
Start time:
Uptime:
Packet scheduling mode : Disabled
For further description of the output from the commands, see the JUNOS
Internet Software Operational Mode Command Reference: Protocols, Class of
Service, Chassis, and Management.
Check the LEDs on the faceplate of both power supplies. A power supply
is functioning correctly when the green LED labeled
(indicating that the circuit breaker is switched on) and the blue LED labeled
is lit steadily (indicating that the supply is receiving power from
OUTPUT OK
the DC source).
If these LEDs are blinking or other LEDs are lit, there could be an error
condition. For a summary of LED states, see "Power Supply" on page 36.
Issue the following CLI command to check the status of the power supplies.
The following example specifies a slot number (
in the sample output, the value
power supply is operating normally:
user@host> show chassis environment pem 0
PEM 0 status:
State
Temperature
DC input
DC Output
Load
Voltage:
48.0 V input
48.0 V fan supply
5.0 V bias
8.0 V bias
Maintaining Hardware Components
Online
43 degrees C / 109 degrees F
43 degrees C / 109 degrees F
64 MB
8 MB
Version 1, Foundry IBM, Part number 9
2003-04-29 16:12:26 PDT
5 days, 22 hours, 28 minutes, 26 seconds
CB ON
), which is optional. As shown
0
in the column indicates that the
Online State
Online
OK
OK
OK
Less than 40 percent
55059 mV
50181 mV
5032 mV
8224 mV
Maintaining Power Supplies
is lit steadily
137