Troubleshooting
12. Check the front
-panel LEDs:
a. Press the down (▼) arrow to select FP LED TEST.
b. Press ENTER to start the test. The test first turns on each LED
individually in green and red and then turns them all on together in green,
red, and the
n yellow.
c. During the test, check for the following:
When the LEDs are tested individually, only one LED is on at a time.
When the LEDs are tested together, each LED should turn on for
each color (green, red, yellow) with the colors and intensity being
well matched.
NOTE. If
there is a bad LED or if two adjacent LEDs are shorted, re place
the Front Panel board.
13. Press the down (▼) arrow to select PS1 LOAD TEST or PS2 LOAD TEST.
The readout will show PS1 or PS2, depending on which supply is configured
as the primary supply.
The readout displays the status of the most recent load test of the backup
power supply. The instrument automatically runs a load test on the backup
supp
ly every 24 hours when Option DPW is installed. Load test not r un is
displayed when only one supply is installed. When the test is run, the top line
of the display lists whether the test passed or not and the second line lists
thedateandtimeofthetest.
NOTE. You can use the SYSTEM CONFIG > PS LOAD TEST menu selection
to force a load test of the b ackup supply. After a load test, the load resistor must
co
ol off for 30 seconds before a new test can be initiated. If the backup supply
shows a load test failure, replace the backup supply.
1
4.
P
ress BACK to exit the DIAGNOSTICS submenu.
4–14 ECO8000 Series Service Manual
To Next Page
Loading...
Need help?
General
