Tektronix ECO8000 Series Service Manual

Troubleshooting
Table 4-1: Troubleshooting common problems (cont.)
Symptom Trou blesh ooting procedures
Channel LED shows signal as a fault when level is correct Check that the channel threshold level is correct (See
page 4-19.)
Relay Check function is buzzing the HREF/Relay channel relay
when not needed
Check that the HREF/Relay channel is correctly terminated
(See page 4-19.)
Disable the Relay Check for that HREF/Relay channel (See
page 4-22.)
Front panel status LEDs are not on for a given channel Check that the channel is enabled (See page 4-21.)
Execute the Initialize Hardware function (See page 4-23.)
Status screen indicates a Power Supply module has a
temperature weighted hour warning
This status indicates that the supply has exceeded its
recommended life.
Replace the supply to ensure maximum reliability
Status screen indicates that the Backup Test is due
NOTE. Preventative testing will improve the reliability of the
changeover system if an actual fault occurs and the ECO changes
to the backup source.
This status Indicates that the channel relays have not switched
for at least 6 months.
If possible, arrange to manually switch to backup and
ensure the signals are all present and working
ECO8000 Series Service Manual 4–3

Tektronix ECO8000 Series Specifications

General

Brand	Tektronix
Model	ECO8000 Series
Category	Control Unit
Language	English