RIGOL DM3068 - Manual (Page 66)

RIGOL
DM3068 Quick Guide 22
Troubleshooting
To help you solve commonly encountered problems, we have listed some typical
issues with their respective solutions. If the problems persist, contact
RIGOL and
prepare your device information (Utility T/C  Info).
1. The screen still dark (no display) after power on:
(1) Check if the power cord is well connected.
(2) Check if the power switch on the rear panel is switched on.
(3) Check if the safety fuse has melted and replace a new one when necessary.
(4) Having done with the above steps, restart the instrument.
(5) If the problem persists please contact
RIGOL for service options.
2. The reading is constant when a current signal is input:
(1) Check if the test lead is correctly inserted to the current and/or LO terminals.
(2) Check if the current fuse on the rear panel has melted.
(3) Check if the measurement function is switched to DCI or ACI.
(4) Check if the enabled measurement function matches with the actual input
current.
3. The reading is abnormal when a DC signal is input:
(1) Check if the test lead is correctly inserted to the current and/or LO terminals.
(2) Check if the current fuse on the rear panel has melted.
(3) Check if the measurement function is switched to DCI or DCV.
(4) Check if the enabled measurement function matches with the actual input
current.
4. The USB flash device cannot be identified:
(1) Check if the USB flash device is in good condition.
(2) Make sure the USB device you used is a flash device.
(3) Check the capacity of your USB device. A USB flash device with less than 4G
bytes capacity is recommended.
(4) Restart the multimeter and insert the USB flash device.
(5) If the problem persists please contact
RIGOL for service options.