Mindray DP-3200, Service Manual

Page: 73 / 81

Structure and Assembly/Disassembly of the Machine
Figure 5-48 Solution of no echo signal in image area
4.4Black Area in the Image
（
Black Strip
）
Black area in the B mode
Image(Black Strip)
Replace the transducer
and use the same connector.
Is the problem resolved?
Connect different
transducer connector.
Is the problem resolved?
The transducer's
fault
The transducer
board's fault
Yes
Yes
No
The main board's
fault
No
Figure 5-49 Solution of black area in the image
4.5Image Interference
If it is abnormal in image area
（
such as interference, ripples and bright lines, etc.
）
, first
verify it is not interference from outside. Then check whether the system grounding is
good, and whether there is other equipment nearby generating interference signals. In
addition, verify that the transducer board shielding cover, the main board socket, the
digital circuit shielding cover and the power board shielding cover are all in good
condition.
Check the system according to the following chart:
DP-3300/DP-3200 Service Manual
（
V1.1
）
5-3