Specifications

1-20 Transmitters 4000326 Rev A
Troubleshoot Alarm Conditions,
Continued
Troubleshooting Power Supply Alarms
The following table shows the possible causes of power supply alarms and their
solutions.
Alarm Status Possible Causes Possible Solutions
Loose, unplugged,
or damaged power
cords.
Check the power supply
power cord and
connections.
No AC at receptacle.
Check receptacle for AC
power.
A blown fuse on the
power supply.
Check the power supply
fuse. Repair or replace as
needed.
A faulty power
supply module.
Verify proper power supply
module operation. Repair
or replace as needed.
The transmitter is
not seated properly
in the chassis.
Verify that the transmitter is
securely connected to the
chassis.
A faulty transmitter
module.
The transmitter may be
faulty and should be
replaced.
• +5 V DC analog
power
• +5 V DC
digital power
• -5 V DC
digital power
• +15 V DC
digital power
• +24 V DC
digital power
High or Low
No power within
chassis.
Check receptacle for AC
power. If OK, the chassis
may have a problem.
For help, telephone the
Scientific-Atlanta assistance
center in your area.
Backplane power
supply status
(primary and
secondary)
PSPri or PSsec Fail
The power supply
status is:
• Reported as
in alarm
• Not reported
at all
Verify the operation of the
power supplies. If they are
functioning properly and no
power supply related
alarms are reported on any
module in the chassis, the
chassis may have a problem.
For help, telephone the
Scientific-Atlanta assistance
center in your area.