737 MAX Flight Crew Operations Manual
Electrical -
Controls and Indicators
6.10.4
MN-FLT-OH-201
12
AC Meters Selector
Selects AC source for AC voltmeter, AC ammeter and frequency meter
indications
TEST – used by maintenance.
13
CAB/UTIL Switch
OFF – removes electrical power from galley and cabin equipment systems
including:
• all 115V AC galley buses
• fwd and aft door area heaters
• drain mast heaters
• lavatory water heaters
• logo lights
• potable water compressor
• 115V AC shaver outlets when installed
• LED cabin lighting
ON – supplies electrical power to galley and cabin equipment systems.
14
IFE/PASS SEAT Switch
OFF – removes electrical power from installed components of the passenger seats,
in-flight entertainment systems, and other power systems including:
• 115V AC audio entertainment equipment
• 115V AC video entertainment equipment
• cabin telephone equipment
• FAX machine
• 28V DC video equipment and passenger seat electronic outlets
1B401 - 1B785, 1B801 - 1J594
• 115V AC flight deck auxiliary power outlets
ON – supplies electrical power to installed components of the passenger seats,
in-flight entertainment systems, and other power systems.
March 1, 2021