Specifications

5-20 Chassis 4000326 Rev A
Troubleshoot Alarm Conditions
Introduction
The information in this section provides possible solutions to the following types of
alarm conditions:
• General
• Power supply and fan tray
Troubleshooting General Alarms
The following table shows the possible causes of general alarm conditions and their
possible solutions.
Alarm Condition Possible Causes Possible Solutions
Power supply connection
is loose.
Verify that all power
supply connections are
secure.
Loss of system power.
Verify that AC power is
present at receptacle.
AC power failure;
backup in use.
Check other displays and
indicators for power
indication.
POWER indicator is off.
Module indicator is
burned out.
Contact Scientific-Atlanta
for a replacement
indicator.
For instructions, refer to
Chapter 6, Customer
Information.
Alarm indicator is on. Power supply problem.
Verify that all power
supply connections are
secure.
Loss of power. Check/reconnect power.
Cooling fans are not
working.
Fan failure. Replace fan tray.
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