SEE
Figure 1 (Sheet 5)
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A
747-400
MAINTENANCE MANUAL
APU COMPARTMENT
LIGHTS (2 PLACES)
SEE M AND N
TAIL CONE LIGHT AUX POWER
LIGHTS UNIT USE LAMP 1683
(4 PLACES)
SEE N
SEE P LIGHT SWITCH
AUX POWER UNIT
SEE O
APU COMPARTMENT LEFT
LIGHT AND SWITCH
M
P211 STABILIZER FUEL SUMP DRAIN
D9053
SERVICE
L3666 L3667 INPH TYPICAL LIGHT
L VALVE R VALVE
OPEN N
L OPEN
CLOSED
R OPEN
CLOSED S1914
S1881 SUMP DRAIN SUMP DRAIN CONT FWD TAIL CONE
MAINT RIGHT LIGHT SWITCH
ON
S112
SERV
LTS
0FF
AFT TAIL CONE
LEFT LIGHT SWITCH
O
P
Service Compartment Lights Component Location
Figure 1 (Sheet 6)
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A
747-400 MAINTENANCE MANUAL
SERVICE COMPARTMENT LIGHTS - ADJUSTMENT/TEST
____________________________________________
1. General_______
A. This procedure contains these tasks:
(1)
A task to do a test of the lights in the nose wheel well.
(2)
A task to do a test of the lights in the main wheel wells.
(3)
A task to do a test of the lights in the air conditioning compartment.
(4)
A task to do a test of the main and the forward electrical equipment centers.
(5)
A task to do a test of the light in the aft electrical equipment center.
(6)
A task to do a test of the light in the tail cone compartment.
(7)
A task to do a test of the lights in the Auxiliary Power Unit (APU) compartment.
(8)
A task to do a test of the fueling station lights.
TASK 33-31-00-705-001
2. Lights in the Nose Wheel Well Operational Test______________________________________________
A. References
(1)
24-22-00/201, Manual Control
(2)
32-00-30/201, Landing Gear Door Locks
(3)
SSM 33-31-10
B. Access
(1) Location Zone
100 Nose Wheel Well
C. Procedure
S 865-002
(1)
Supply electrical power (Ref 24-22-00/201).
S 865-003
(2)
Make sure this circuit breaker is closed:
(a) P414 Power Distribution Center - Left 1) 414F20 LIGHT NOSE W/W
S 495-005
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(3) Do this task: "The Installation of the Door Locks on the Nose Landing Gear" (Ref 32-00-30/201).
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747-400 MAINTENANCE MANUAL
S 715-082
(4) Do a test of the lights in the nose wheel well:
(a)
Put the LIGHTS switch on the P37 panel to ON.
(b)
Make sure the lights in the nose wheel well are on.
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