DC Power Technologies FS3 Version 3 - Technical Hardware Manual - Manual (Page 37)

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In Green Led Test menu ensure that the Green Ready lamp is
illuminated and the display reads Green Led Test. Press the
button to pass the test.
In the Buzzer Test menu ensure the buzzer is sounding, press
the UP button to pass the test. The next 3 tests are automated
and require no user intervention.
On completion of the test “Test Succeeded” should be
displayed. If a fault occurs the test will stop at the point of
failure. Cycling the power returns the charger to normal
operation mode.
Self Test
Green Led Test
ON - Push UP
OFF - Push DOWN
Self Test
Buzzer Test
ON - Push UP
OFF - Push DOWN
Self Test
RTC Test
Self Test
Rectifier Test
Self Test
Memory Test
Self Test
Test Succeeded
(Enter to Exit)