RIGOL                                                                                                                                                   
                                                                     
Service Guide for DM3000 Series 
 
 
          CAUTION:    Make sure the power is cut off before replacing fuse, and the 
specifications of fuse should be in accordance with the requirements   
in this manual. 
 
 
2.  When the reading display is incorrect: 
(1)    Check whether the range is consistent with test items. 
(2)    Check whether the recommended calibration date is exceed. If the testing value   
   exceeds  the  range  in  corresponding  accuracy  index,  please  contact  authorized 
calibration center of RIGOL to calibrate. 
(3)    If the instrument still can not work in the course of nature, please contact with your   
      local RIGOL Service center. 
 
3.  When the back light of the screen is dark: 
(1)    Adjust its brightness and contrast. 
(2)    If the instrument still can not work in the course of nature, please contact with your     
local RIGOL Service center. 
 
4.  When the multiplexer work abnormally: 
(1)    Check whether the module connection cable and test lead is correctly connected. 
(2)    Check whether the multimeter could communicate with PC normally.; 
(3)    Check whether the correct range has been set to multiplexer test 
(4)    If the instrument still can not work in the course of nature, please contact with your   
local RIGOL Service center. 
 
5.  When the multimeter can not access into the test interface: 
(1)    Check whether you turn on the instrument following the requirements in manual   
(2)    Check  whether  GPIB/LAN  extension  board  is  connected  with  the  motherboard 
normally. 
(3)    If the instrument still can not work in the course of nature, please contact with your 
local RIGOL Service center. 
 
6.  When the multimeter can not communicate with PC by its software:   
(1)    Check whether the USB cable is connected correctly. 
(2)    Take Windows system as example, check device manager to make sure whether PC 
recognizes the host machine connection. 
(3)    Check whether install the drive, you can download the drive program in the website 
www.rigol.com 
(4)    Check whether the software version is matching with current firmware version.; 
(5)    If the instrument still can not work in the course of nature, please contact with your