Door Warning System - Component Location Figure 102 (Sheet 3)
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A
747-400
FAULT ISOLATION/MAINT MANUAL
UPPER DECK DOOR
MAIN ENTRY
DOOR NO. 3 SEE K
SEE J
DOOR 5 WARNING MAIN ENTRY SWITCH MAIN ENTRY
DOOR NO. 4 SEE MDOOR NO. 1
SEE J AND 2
SEE J DOOR 1-4 WARNINGMAIN ENTRY SWITCH
DOOR NO. 5
SEE L
SEE J SWITCH
DOOR COVER
WARNING (REF)
SWITCH
MAIN ENTRY DOOR NO. 1,2,3,4 OR 5 (LEFT SIDE SHOWN RIGHT SIDE EQUIVALENT)
J
DOOR NO. 1-4 WARNING SWITCH (EXAMPLE) (LEFT SIDE SHOWN, RIGHT SIDE EQUIVALENT)
L DOOR WARNING SWITCH
LEFT, RIGHT, DOOR 5 WARNING SWITCH, S33,S38 (LEFT SIDE SHOWN, RIGHT SIDE EQUIVALENT)
M
DOOR WARNING SWITCH
UPPER DECK DOOR
K
Door Warning System - Component Location
Figure 102 (Sheet 4)
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747-400
FAULT ISOLATION/MAINT MANUAL
SIDE CARGO DOOR
DOOR WARNING SWITCH
A
SEE N
A
SWITCH
ACTUATOR (REF)
DOOR CLOSED
DOOR SWITCH
PRESSURE RELIEF WARNING DOOR LATCHED
DOOR SHAFT SWITCH SWITCH
(REF)
N
SIDE CARGO DOOR WARNING SWITCH, S1233
A-A
Door Warning System - Component Location Figure 102 (Sheet 5)
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747-400 FAULT ISOLATION/MAINT MANUAL
DOOR CLOSED SWITCH, S1238
Door Warning System - Component Location
Figure 102 (Sheet 6)
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747-400 MAINTENANCE MANUAL
DOOR WARNING SYSTEM - ADJUSTMENT/TEST
_____________________________________
1. General_______
A. This procedure contains these tasks:
(1)
An operational test of the warning system for these doors:
(a)
The main entry doors
(b)
The forward and the center electronic equipment compartment doors.
(c)
The overhead hatch
(d)
The upper deck crew service door.
(e)
The cargo doors.
(2)
An adjustment of the door warning system.
B.
Status messages will appear on the lower EICAS screen when the STAT button is depressed.
C.
There are two methods that erase a status message. These methods require that there is a CMC on the airplane. AMM 31-61-00/201 includes a task that erases status messages.
(1)
Use the ERASE prompt located on the CMCS present leg fault menu to erase an individual message.
(2)
Use the Erase Status prompt located on the CMCS Present Leg Fault Menu to erase all status messages.
TASK 52-71-00-715-084
2. Operational Test of the Door Warning System on the Main Entry Doors, Crew_________________________________________________________________________ Service Door, Overhead Hatch and the Electronic Equipment Doors_______________________________________________________________
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