Specifications

8-11
Cisco MGX 8260 Command Line Interface Guide
Release 1.2, Part Number 78-10987-01 Rev. B0, January, 2002
Chapter 8 Troubleshooting
Clearing Alarms
Clearing Environmental Alarms
The MGX 8260 Media Gateway monitors temperature and voltage at several points in the shelf and on
the cards. To view environmental alarms, enter the lsemms command.
The system displays a summary of sensor types, status, and readings. Use the sensor type field described
in the following table, find the description that matches your problem, and follow the instructions.
SCC fails initialization
• Use the lsevt command to check for error events logged during
initialization and look for a possible OC3 hardware failure
SCC back card type not
properly programmed
• escalate problem to customer support
Symptom Corrective Action
Displayed Information Description
Temperature The sensor temperature exceeds the maximum threshold value. Try the
following possible remedies:
• Check the fan assembly and verify that all fans are operational.
• Make sure airflow is not blocked or inhibited.
• Remove and replace affected cards.
Voltage The voltage is over or under the threshold value. Try the following
possible remedies:
• Check the front panel PWR circuit LEDs. If PWR A or PWR B is off,
check the corresponding fuse.
• Check the DC power source for proper operation.
• Check interconnecting power cables and connectors.
Fan speed A fan has failed or is running too slow. Try the following possible
remedies:
• Check for 6 in. clearance between the top chassis in the rack and
other equipment. Remove or move any equipment that is too close.
• Physically inspect the fan assembly. Remove and replace a fan that
is not rotating.