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Service Manual
9 System Checks
9.4 Image Tests
9.4.1 B Image Test
Adjust the B gain to the maximum in accordance with depths or frequencies, and check the following
items in the B mode.
The initial echo field of the image should be displayed in an appropriate brightness without any
aberrations.
No strikes or artifacts are displayed on the image.
9.4.2 THI Image Test
Adjust the B gain to the maximum in accordance with depths or frequencies, and check the following
items in the THI mode.
The initial echo field of the image should be displayed in an appropriate brightness without any
aberrations.
No strikes or artifacts are displayed on the image.
9.4.3 Color/DPI/TDI Image Test
Adjust the B gain and ROI to the maximum with the default depth and frequency, adjust the Color/
DPI/TDI gain until few color interferences occur. In this case, there are no strikes or artifacts on the
image. However, it is normal if some color noises appears accidentally.
9.4.4 PW/CW Image Test
Adjust the PW/CW gain in the real time PW/CW mode, until a clear spectral Doppler image
displays. Adjust the pulse repetition frequency, and no noises appears on the image.
9.4.5 3D Image Test
Perform the following steps to take the test.
1. Select a probe type and an exam type, the system automatically enters the B mode.
2. Ensure no strikes or artifacts are displayed on the image.
3. Press the Freeze key, and tap 3D to enter the 3D mode.
4. Ensure the 3D image is not separated or deformed.
9.4.6 4D Image Test
Perform the following steps to take the test.
1. Select a probe type and an exam type, the system automatically enters the B mode.
2. Ensure no strikes or artifacts are displayed on the image.
3. Tap 4D to enter the 4D mode.
4. Ensure 4D probe motor start working, and run at a uniform speed.
5. Ensure the 4D image is not separated or deformed.
6. Quit 4D imaging, and ensure 4D probe stop working immediately.
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