| Master Lights Test |
Master LIGHTS TEST and DIM SWITCH
TEST – illuminates all system lights on forward and aft overhead
panels, and some lights on Captain and First Officer instrument
panels to full brightness.
BRT (bright) – sets all system lights on forward and aft overhead
panels, and some lights on Captain and First Officer panels to full
brightness.
DIM – sets all system lights on forward and aft overhead panels, and
some lights on Captain and First Officer panels to low brightness.
TEST – illuminates all system lights on forward and aft overhead
panels, and some lights on Captain and First Officer instrument
panels to full brightness.
BRT (bright) – sets all system lights on forward and aft overhead
panels, and some lights on Captain and First Officer panels to full
brightness.
DIM – sets all system lights on forward and aft overhead panels, and
some lights on Captain and First Officer panels to low brightness.
Note: Placing the Master Lights Test and Dim Switch in the
TEST position will result in a master caution recall and any stored
fault will cause the associated light to remain illuminated when the
switch is released.
Note: The fire warning lights are not checked during this test. Use
individual test switches or push to test features to check lights
which do not illuminate during the light test.
