User manual

RIGOL
20 DP800A Quick Guide
Troubleshooting
The commonly encountered failures and their solutions are listed below. When you
encounter those problems, please solve them following the corresponding steps. If
the problem remains still, please contact RIGOL and provide your device
information (Utility Sys Info).
1. The instrument can not start up.
(1) Check whether the power is correctly connected.
(2) Check whether the power switch at the front panel is really on.
(3) Remove the power cord and check whether the voltage selector is at the
proper scale, whether the specification of the fuse is correct and whether
the fuse is intact. If the fuse needs to be changed, refer to “To Replace the
Fuse”.
(4) If the problem remains, please contact RIGOL.
2. The constant voltage output is abnormal.
(1) Check whether the maximum output power of the scale currently selected
fulfills the load requirement. If yes, go to the next step.
(2) Check whether the cable connecting the load and power supply is
short-circuited and in good contact.
(3) Check whether the load is normal.
(4) Check whether the current setting value of this scale is proper; if it is too
low, increase it properly.
(5) If the problem remains, please contact RIGOL.
3. The constant current output is abnormal.
(1) Check whether the maximum output power of the scale currently selected
fulfills the load requirement. If yes, go to the next step.
(2) Check whether the cable connecting the load and power supply is
short-circuited and in good contact.
(3) Check whether the load is normal.
(4) Check whether the voltage setting value of this scale is proper; if it is too
low, increase it properly.
(5) If the problem remains, please contact RIGOL.
4. The USB storage device can not be recognized.
(1) Check whether the USB storage device can work normally.
(2) Make sure that the USB storage device being used is flash storage type.
This oscilloscope does not support hardware storage type.
(3) Restart the instrument and then insert the USB storage device to check it.
(4) If the USB storage device still can not be used normally, please contact
RIGOL.