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23
Troubleshooting
1. When I power on the instrument, the instrument stays black and does not
display anything.
a. Check whether the power supply has been connected correctly.
b. Check whether the power key is really pressed.
c. Check whether the fuse is blown. If you need to replace the fuse, use only the
specified fuse that conforms to the product.
d. Restart the instrument after finishing the above inspections.
e. If the problem still persists, please contact RIGOL.
2. No waveform of the signal is displayed on the screen.
a. Check whether the probe is properly connected to the item under test.
b. Check whether there are signals generated from the item to be tested (you can
connect the probe compensation output signal to the faulty channel to locate
the problem, and then determine whether the channel or the item to be tested
has a problem).
c. Resample the signal.
d. If the problem still persists, please contact RIGOL.
3. The USB storage device cannot be recognized.
a. Check whether the USB storage device can work normally when connected to
other instruments or PC.
b. Make sure that the USB storage device is FAT32 format and flash type. The
instrument doesn't support hardware USB storage device.
c. After restarting the instrument, insert the USB storage device again to check
whether it can work normally.
d. If the USB storage device still cannot work normally, please contact RIGOL.
4. The touch-enabled operation does not work.
a. Check whether you have locked the touch screen. If yes, unlock the touch
screen.
b. Check whether the screen or your finger is stained with oil or sweat. If yes,
please clean the screen or dry your hands.
c. Check whether there is a strong magnetic field around the instrument. If the
instrument is close to the strong magnetic field (e.g. a magnet), please move
the instrument away from the magnet field.
Troubleshooting
DHO4000 User Guide
272
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
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