NF KP3000GS, Instruction Manual

Page: 233 / 279

8. Troubleshooting
PROGRAMMABLE AC/DC POWER SOURCE 214
Table 8-3 Actions When a Failure is Suspected (Continued)
Category Symptom Possible Cause Necessary Actions
Problem at
output setting The line
synchronization
cannot be set. The signal source is not
set to SYNC. Set the signal source to SYNC and
the external synchronization
signal source to LINE.

4.18
The output on
state cannot be
achieved. An error message is
on-screen. The output cannot be turned on
while there is an error message. If
the protection function is
activated, remove the cause.

8.1.2
Press the ENTER key to clear the
error message. When the message
says "System Locked", cycle the
power.
Output-related
problem The output
voltage does not
come up. The state is the output
off (the OUTPUT key
LED illuminates) Press the OUTPUT key to turn the
output on.
The output voltage is
set to zero. Check for the output voltage
setting.

3.4.4
The external signal
source is not
connected. When the signal source is EXT,
ADD, or VCA, connect the signal
source to the external signal input
terminal, and set the external input
gain appropriately.

4.16 , 4.19
The external input gain
is zero.
There is no
output from the
outlet on the
front. The output coupling
mode is the DC mode. The front output outlet can be
used only in the AC mode or
ACDC mode. The output does not
appear in the DC mode.
The output voltage
range is 200 V. The Japan/North America type
outlet can be used only in the 100
V range. The output does not
appear in the 200 V range.
When the
external signal
is amplified on
EXT or ADD,
the waveform is
distorted and
the intended
output is not
provided. The output coupling
mode is the AC mode. In the AC mode, the waveform
may be distorted as the DC
component removal function
works. Use in the ACDC mode.
The measured
voltage is
different from
the setting
value. Unnecessary items are
set (for example, the
AC voltage setting
remains for the DC
output). Check for the setting again. In the
ADD mode, check on the external
input signal and gain setting as
well.

4.19
The limiter is activated
(the limiter icon is
displayed). For a load with lower impedance,
the limiter is activated to make the
output lower than the setting
value. Check on the limiter
setting.

4.1