Troubleshooting The T4000 Sibs; Table 38: Chassis Alarm Messages For The Scgs - Juniper T4000 Hardware Manual

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Troubleshooting the T4000 SIBs

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Copyright © 2013, Juniper Networks, Inc.

Table 38: Chassis Alarm Messages for the SCGs

Alarm Type LCD Message
Red
SCG
Failure
SCG
Removed
Yellow
SCG
Online
To troubleshoot the SCGs:
Check the LEDs on the faceplate of each SCG.
1.
Check the LEDs on the craft interface.
2.
Use the show chassis environment scg
3.
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
8.0 V bias
GBUS Revision
FPGA Revision
Use the CLI to check for alarms—Issue the
4.
alarms.
T4000 SONET Clock Generators (SCGs) Description on page 49
T4000 SONET Clock Generators (SCGs) LEDs on page 51
Maintaining the T4000 SCGs on page 187
Replacing a T4000 SCG on page 277
The following alarms and LEDs indicate a problem with a SIB:
A red alarm indicates that the SIB failed or has been removed or that a spare SIB has
failed or has been removed.
The red FAIL LED on the SIB faceplate is lit.
Chapter 18: Troubleshooting T4000 Router Hardware Components
CLI Message
SCG-number SCG-number
SCG
SCG-number SCG-number
SCG
SCG-number SCG-number
Not SCG
command.
Online - Master clock
31 degrees C / 87 degrees F
0 mV
3310 mV
5052 mV
5689 mV
1782 mV
3306 mV
4989 mV
8336 mV
40
1.6
show chassis alarms
Failure
Removed
Not Online
command to view the
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