NF EC1000SA, Instruction Manual

Page: 250 / 283

7.3 When Failure Is Suspected
EC1000SA 7-14
Table7-13. When Failure Is Suspected (Problem Related to Output Error)
Symptom Possible Cause Required Action, etc.
No output
Output voltage setting is “0”.
Check the output voltage setting.
See “3.4.5 Setting output voltage” .
Signal source is not connected.
When the signal source mode is external signal
(EXT), connect the signal source to the external
signal input terminal, then set a suitable external
input gain.
See “3.3.5 External signal
input/external sync signal input
terminal”
.
See “4.9 Amplification of External
Signal
” .
External input gain is set to “0”.
Output on/off switch
(OUTPUT) is not set to on.
Set the output on/off switch to on.
Protection function-related error
or warning message is
displayed.
Output cannot be set to on when a protection
function-related error or warning message is
being displayed.
See the required actions listed in
“Table7-3. Protection Function-Related
Errors”
and
“Table7-6. Warning
Messages”
, and eliminate the cause of the
error.
When a protection function-related error
message is being displayed, all key operations
become invalid. Turn the power source switch
off, then turn on again.
Warning message is
displayed.
Overload has occurred.
Connect a load that is within the maximum
output range or lower the output level.
Excessive signal level in signal
generator
If the signal source is EXT or ADD, either
reduce the connected signal generator output
level or reduce the external input gain.
Ambient temperature is too
high. Keep the ambient temperature lower than 40°C
during use.
Air filter is clogged.
See “8.2 Routine Maintenance”
and
clean the air filter.
Something is blocking the air
flow near the air intake on the
front panel or the air exhaust on
the rear panel.
Make sure the EC1000SA complies with the
installation requirements described in
“2.2
Installation Environment” .