737 MAX Flight Crew Operations Manual
Electrical -
Controls and Indicators
MN-FLT-OH-201
6.10.9
1
GROUND SERVICE Switch
Momentary push–button switch.
Provides manual control of ground service buses. Enables servicing airplane using
external power without activating AC transfer buses.
Illuminated (white) –
• ON – connects external power to ground service buses
• OFF – disconnects external power from ground service buses.
March 1, 2021