RIGOL
Service Guide for DM3000 Series
Components Inspection
From this part, you can get more information about malfunction in order to process hard
troubleshooting by yourself.
1. Fuse
DM3000 have many fuse designs, the one can be changed by customer themselves is
power instrument pipe and current fuse, the parameters are as follows:
Power fuse: 250V, 300mA, quick-break
Current fuse: 10A, quick-break
Inspection method：
Test the continuity by DM. If no connection beep, the fuse is supposed brown.
2. Power Frequency Transformer
DM3000 adopts power frequency transformer, and the power socket equips with fuse
socket and power source switch. The voltage switch function extend the voltage adjust
range all over the world. Voltage switch has options of 230V/115V, when the commercial
power is 220V, you should select “230”; if the commercial power is 110V, you should select
“115”.
Inspection method：
Check the voltage among windings
AC 110V
AC 110V
AC 8.5V
AC 17V
AC 17V
AC 9V
Red
Yellow
White
Blue
Blue
Brown
White
Yellow
Black
Black
Figure 6-3 Transformer Sketch Map
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