Mindray DC-6, Service Manual

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System Maintenance
7-17
The evaluating criterion is: the characters and crosses displayed on the monitor shall be the
same as those in the figure, which are clearly recognizable.
4. For LCD monitor, you shall perform the test of bright points and dark points.
The evaluating criterion is shown as follows:
The number of bright points is 0;
The number of continuous dark point pair is less than or equal to 3 pairs, and no
continuous dark point appears in the image area;
There are no three or more than three continuous dark points;
The sum of dark point defects is less than or equal to 7, and the number of dark points in
the image area is less than or equal to 2;
The number of point flash defects is 0;
Space between failpoints is greater than 5mm.
5. Press the Exit key to exit the monitor test.
7.2.8 Self-test
1. Enter the Maintenance menu as per steps 1, 2 and 3 in the section 7.2.3.1, select the
Selftest item and press Set to enter the system self-test.
2. Wait until the following dialog box appears, and click OK button to enter the depth test.
3. Wait until the following dialog box appears.