737 MAX Flight Crew Operations Manual
Flight Instruments, Displays -
MAX Display System - System
Description
MN-FLT-OH-201
10.20.3
The DISPLAYS CONTROL PANEL switch (labeled "CONTROL PANEL"), also
located on the DISPLAYS panel, allows the crew to manually select which EFIS
Control panel controls the captain and first officer displays. In the NORMAL
position, the Captain's display instruments respond to the Captain's EFIS CP and
the First Officer's display instruments respond to the First Officer's EFIS control
panel. With the control switched to either BOTH ON 1 or BOTH ON 2, the
selected EFIS control panel will provide inputs to MDS for the display of identical
EFIS control functions on both sets of pilot displays. For example, with the
Control Panel Select Switch in the BOTH ON 1 position, a baro setting entered on
the Captain's EFIS control panel will be shown identically on both pilots’
altimeter indications.
EFIS Control Panels
Two EFIS control panels, located on the glare shield of the center main panel,
control display options, mode, and range for the related pilot’s displays.
If one EFIS control panel fails, the displays can be controlled by the remaining
control panel. Refer to the PFD and ND sections of this chapter for more
information.
Display Select Switches
Display switching in the case of undetected DU failure is initiated using the
Display Selector Switches located on each flight crew's Display Select Panels.
When the switch is in the inboard (INBD) position, the outboard DU is blanked
and the inboard DU displays the cropped PFD and the Engine display format if the
Engine display format was previously displayed on this side. Otherwise,
whichever display that was shown in place of the Engine display format before the
failure will be shown. When the switch is in the outboard (OUTBD) position, the
inboard DU is blanked. The outboard half of the outboard DU displays the
cropped PFD. The inboard half displays the Engine display format if the engine
display format was previously shown on that side of the flight deck. Otherwise,
whichever display that was shown in place of the Engine display format before the
failure will be shown.
When in the INBD or OUTBD position, a reduced size of the AUX display is also
displayed above the reduced size PFD.
Display Selection and Control Examples
The following examples show display selections.
March 1, 2021