JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
Page 4
–1
4 Control and Display
The RES is operated by the following:
•
Guarded RES master switch
•
12V battery selector switch
•
Display and Control Unit (DCU)
Guarded RES Master Switch
The guarded RES master switch is a toggle switch fitted with a spring-
loaded guard located on the instrument panel. The switch controls the
12 V power supply to the RES. An adjacent battery selector toggle
switch enables the pilot to select the 12 V supply from either of the
removable 12 V batteries.
Figure 4-1 Guarded RES master switch and battery selector switch
NOTE:
The HV batteries cannot be enabled without the
external 12 V power supply to the system. When the
HV power rail has been activated, the selected 12 V
battery can be charged with the built-in DC-DC
converter.
When the guarded RES master switch is switched ON, the built-in test
procedure is initiated and the system will enter standby mode with the
