Maintaining The T640 Scgs - Juniper T640 Hardware Manual

Related
Documentation

Maintaining the T640 SCGs

Purpose
Action
Copyright © 2013, Juniper Networks, Inc.
1.8 V
2.5 V
3.3 V
4.6 V
5.0 V
12.0 V
3.3 V bias
8.0 V bias
GBUS Revision
FPGA Revision
For further description of the output from the commands, seeshow chassis environment
cb.
T640 Control Boards Description on page 43
T640 Standard Control Boards LEDs on page 44
T640 T Series Control Boards (T-CBs) LEDs on page 46
T640 LCC-CB LEDs on page 47
Troubleshooting the T640 Host Subsystem on page 213
Troubleshooting the T640 Control Board on page 214
For optimum router performance, verify the condition of the SCGs.
On a regular basis:
Check the SCG LEDs. During normal operations:
The green LED on the SCG faceplate is lit.
OK
The yellow LED on the SCG faceplate is not lit.
FAIL
The blue LED on the SCG faceplate indicates which SCG is the master.
MASTER
For more information, see
page 48.
Issue the
show chassis environment scg
SCGs. The output is similar to the following:
user@host> show chassis environment scg
SCG 0 status:
State
Temperature
Power:
GROUND
3.3 V
5.0 V
5.6 V
1.8 V bias
3.3 V bias
5.0 V bias
Chapter 15: Maintaining T640 Router Hardware Components
1809 mV
2496 mV
3295 mV
4687 mV
5042 mV
11985 mV
3277 mV
7472 mV
40
7
"T640 SONET Clock Generators (SCGs) Description" on
command to display information about the
Online - Master clock
31 degrees C / 87 degrees F
0 mV
3310 mV
5052 mV
5689 mV
1782 mV
3306 mV
4989 mV
185