(2)  
AIPC 33-51-06

 (3)  
SSM 33-51-01

 C. Access
 (1)  Location Zone
 200 Upper Half of Fuselage

 D. Light Assembly Removal
 S 864-055
 (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 014-003
 WARNING:_______BE CAREFUL WHEN YOU ARE NEAR AN OPEN DOOR. MAKE SURE THAT YOU INSTALL A SAFETY BARRIER IN THE DOOR. IF YOU FALL FROM THE DOOR, IT CAN CAUSE INJURIES.
 (2)  
Open the upper deck door sufficiently to get access to the light (AMM 52-23-00/001).

 (3)  
Install the safety barrier for the door.

 S 034-032

 (4)  
Remove the light assembly.

 S 494-041
 (a)  Disconnect the electrical connector.
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747-400
MAINTENANCE MANUAL

UPPER DECK DOOR
(EXAMPLE)

Door (Slide) Light Installation
Figure 401

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747-400 MAINTENANCE MANUAL
 (b)  Remove the fasteners.
 TASK 33-51-06-404-007
 3.  Upper Deck Door (Slide) Light - Installation (Fig. 401)____________________________________________
 A. References
 (1)  
AMM 52-23-00/001, Upper Deck Door

 (2)  
AIPC 33-51-06

 (3)  
SSM 33-51-01 and 33-51-02

 B. Access
 (1)  Location Zone
 200 Upper Half of Fuselage

 C. Light Assembly Installation
 S 434-033
 (1)  Install the light assembly with the fasteners.
 (a)  Connect the electrical connector.
 S 864-056
 (2) Remove the DO-NOT-CLOSE tags and close these circuit breakers:
 (a)  On the overhead circuit breaker panel, P7: 1) 7G14, CHG EMER LT
 D. Light Test
 S 714-042
 CAUTION: KEEP THE OPERATION OF THE EMERGENCY LIGHTS TO LESS THAN A ONE
_______ MINUTE TIME. THE BATTERIES THAT SUPPLY THE ELECTRICAL POWER TO THE EMERGENCY LIGHTS WILL ONLY OPERATE FOR 15 MINUTES WHEN FULLY CHARGED.
 (1)  On the pilot's overhead panel, P5,
 set the EMER LIGHTS switch to the ON position.

 (a)  Make sure the light comes on correctly.
 S 864-043
 (2)  
Set the EMER LIGHTS switch to the OFF position.

 (a)  Make sure the emergency lights go off.

 (3)  
Close the upper deck door (AMM 52-23-00/001).

 (4)  
Remove the safety barrier if it is not necessary.

 S 414-044
 S 094-045
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747-400 MAINTENANCE MANUAL
 CEILING LIGHTS - MAINTENANCE PRACTICES
______________________________________
 1.  General_______
 A.  This procedure has these tasks:
 (1)  
Ceiling Light - Lamp Replacement

 (2)  
Ceiling Light - Removal

 (3)  
Ceiling Light - Installation

 B.  The ceiling lights are also referred to as aisle lights, crew lights, crew rest lights, and ladder lights.
 TASK 33-51-07-962-001
 2.  Ceiling Light - Lamp Replacement (Fig. 201)________________________________
 A.  References
　
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