Mindray Passport 5-Lead, Service Manual

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Diagnostics and Calibration Procedure Calibration
7 - 16 0070-00-0420 Passport 5-Lead, 5L, LT, XG Service Manual
7.5.7.2 Pixel Test (XG - Color LCD)
This test will display three different patterns as described below:
7.5.7.3 Video Controller Test
If no display is present in the operating mode or during the pixel test, but the unit appears to
be functioning, (beep tone functions for the “R” wave, NIBP pump starts, etc.) there could be
a problem with either the CPU Board or the Display Assembly. A pixel pattern consisting of
vertical bars shown on the display will appear when the test is active. This will produce a
square wave output on the four bits (LCD0-3) driving the video controller which can help
identify a faulty CPU Board.
PATTERN DESCRIPTION
1 All pixels in color white.
2 All pixels in color green.
3 All pixels in color red.
Green
Red