Maintaining The M320 Power Supplies - Juniper M320 Hardware Manual

M320 Router Hardware Guide
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Maintaining the M320 Power Supplies

Purpose
Action
122
Power:
GROUND
1.8 V
2.5 V
3.3 V
1.8 V bias
3.3 V bias
5.0 V bias
8.0 V bias
For more information about using the CLI, see the Junos OS manuals.
M320 SIB Description on page 16
M320 Performance for Different SIB Configurations on page 17
Replacing an M320 SIB on page 172
For optimum router performance, verify the condition of the power supplies.
On a regular basis:
Check the status of the power supplies by issuing the
command. The output is similar to the following:
user@host> show chassis environment pem
PEM 0 status:
State
Temperature
DC input
Load
48.0 V input
48.0 V fan supply
8.0 V bias
5.0 V bias
PEM 1 status:
State
Temperature
DC input
Load
48.0 V input
48.0 V fan supply
8.0 V bias
5.0 V bias
PEM 2 status:
State
Temperature
DC input
Load
48.0 V input
48.0 V fan supply
8.0 V bias
5.0 V bias
PEM 3 status:
State
0 mV
1796 mV
2483 mV
3328 mV
1802 mV
3286 mV
4967 mV
7570 mV
show chassis environment pem
Online
OK
OK
Less than 20 percent
54701 mV
49165 mV
8505 mV
4991 mV
Online
OK
OK
Less than 20 percent
54219 mV
49002 mV
8485 mV
4996 mV
Online
OK
OK
Less than 20 percent
54701 mV
49165 mV
8505 mV
4991 mV
Online
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