View Full Version : 737 NG Display Test
mustang.spitfire
19th Dec 2015, 20:51
Hello all!
I found the pic below and I would like to learn something more about it, please!
(Author unknown)
https://www.dropbox.com/s/l3k1lobyg7xcfsb/FB_IMG_1450336301889.jpg?dl=0
IFixPlanes
20th Dec 2015, 07:15
Out of my training manual:
This is a DU (Display Unit) optical test.
You do these tests to examine the DU liquid crystal display (LCD). The DU BITE circuits do not monitor the LCD quality.
The failures to look for are line defects and element defects in the LCD.
Possible colors are red, blue, green,white and stripe (http://www.airliners.net/photo/Southwest-Airlines/Boeing-737-7H4/0605833/L).
Track
20th Dec 2015, 09:16
It's a DU test you can access via the MAINT LSK on the CDU INIT/REF page. There is a sequence of pages you need to go through to access the test.
Wouldn't try it on an outstation if I were you though...:E
mustang.spitfire
20th Dec 2015, 11:07
Thank you, gentlemen!
And what about the periodicity of this test, please?