supply come on (SSM 33-51-01).
(b)
Set the EMER LIGHTS switch to the OFF position. 1) Make sure the emergency lights go off.
S 712-060
(2) To do a test a power supply with its test switch, do these steps:
(a) Push the test switch on the power supply. 1) Make sure the emergency lights connected to the power supply come on (SSM 33-51-01).
2) Make sure the emergency lights go off automatically after approximately 1 minute.
S 412-061
(3) Close each panel that was opened to get access to the power supply.
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A
747-400 MAINTENANCE MANUAL
DOOR (SILL) LIGHTS - MAINTENANCE PRACTICES
__________________________________________
1. General
_______
A. This procedure contains these tasks for the sill lights of a main deck door:
(1)
Door (Sill) Light - Lamp Replacement
(2)
Door (Sill) Light - Light Assembly Removal
(3)
Door (Sill) Light - Light Assembly Installation
TASK 33-51-05-962-031
2. Door (Sill) Light - Lamp Replacement (Fig. 201)
____________________________________
A. References
(1)
AIPC 33-51-50
(2)
SSM 33-51-01 and 33-51-02
B. Access
(1) Location Zone
200 Upper Half of Fuselage
C. Procedure
S 862-045
(1) Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) On the overhead circuit breaker panel, P7: 1) 7G14, CHG EMER LT
S 012-002
WARNING: MAKE SURE THE SELECTOR LEVER IS IN THE MANUAL POSITION BEFORE
_______ YOU OPEN THE DOOR. THE LEVER MUST BE IN THE MANUAL POSITION TO PREVENT THE SLIDE DEPLOYMENT. DEPLOYMENT OF THE SLIDE CAN CAUSE DAMAGE TO EQUIPMENT OR INJURY TO PERSONS.
(2) Open the door.
S 492-003
WARNING: INSTALL A SAFETY BARRIER ACROSS THE OPEN DOOR WHEN YOU DO NOT
_______ HAVE THE GROUND ACCESS EQUIPMENT INSTALLED. WHEN YOU DO NOT HAVE THE BARRIER INSTALLED, YOU CAN FALL THROUGH THE OPEN DOOR.
(3)
Install a safety barrier.
S 012-004
(4)
Open the access panel in the top of the door frame to get access to the light assembly.
(5)
Remove the lens.
(6)
Carefully replace the lamp.
S 032-026
S 962-027
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747-400
MAINTENANCE MANUAL
ASSEMBLY
TYPICAL DOOR FRAME LIGHT ASSEMBLY INSTALLATION
A-A
Main Deck Floor Frame Light Installation Figure 201
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747-400 MAINTENANCE MANUAL
S 432-028
(7)
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