Troubleshooting
7-4
No. Symptom Possible Cause Solution
2 The system crashes
after the startup image
is displayed.
The main unit fails. Replace the main board.
3 The system crashes
after the menu is
displayed.
The main board is wrong. Replace the main board.
4 The prompt of wrong
transducer recognition
appears after the
menu is displayed.
The transducer or the
transducer board is wrong.
1. Replace the transducer.
2. Replace the transducer
board.
7.6. Use
No. Symptom Possible Cause Solution
1
Characters are
displayed while image
is not.
1. Transmission power,
gain or TGC control is
abnormal.
2. No transducer is
connected or the
transducer is not
connected properly.
3. The system is in the
freeze mode.
1. Adjust the admission
power, gain or TGC
control.
2. Ensure the transducer is
connected properly.
3. Unfreeze the image.
2
The quality of image is
abnormal.
1. The exam mode is not
correct.
2. The setting of image
post process is not
appropriate.
1. Select an appropriate
exam mode.
2. Adjust the post process
setting or set it to the
default.
3 Slight dark stripe
exists in the near field
of image.
1. The transducer is
wrong.
2. The emission circuit
malfunctions.
1. Replace the transducer.
2. Replace the main board.
4 Obvious symmetrical
black area exists in
the near field of
image.
1. The amplifier fails.
2. ADC fails.
Replace the main board.
5 Asymmetrical black
area exists in the near
field of image.
1. The main board fails
2. The transducer board
fails.
1. Replace the main board.
2. Replace the transducer
board.
6 Obvious flecks,
flickers, bright spots or
dark spots exist in the
image.
The digital circuit is wrong. 1. Execute the self-check
and replace
corresponding board as
the system instructs.
2. If no prompt appears,
replace the main board.
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