S 862-046

 (8)
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. Lamp Test
 S 712-029
 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 new lamp comes on correctly.
 S 862-030
 (2)  Set the EMER LIGHTS switch to the OFF position.
 (a)  Make sure the emergency lights go off.
 S 412-031
 (3)  Remove the barrier and close the door.
 TASK 33-51-05-002-007
 3.  Door (Sill) Light - Light Assembly Removal (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. Light Removal
 S 862-047
 (1)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  On the overhead circuit breaker panel, P7: 1) 7G14, CHG EMER LT

 (2)  
Remove the lens.

 (3)  
Open the panel to get access to the light assembly.

 (4)  
Remove the electrical wires from the light assembly.

 S 032-032
 S 012-033
 S 032-034
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747-400 MAINTENANCE MANUAL
 S 022-035
 (5)  Remove the mounting screws that hold the light assembly.
 TASK 33-51-05-402-013
 4.  Door (Sill) Light - Light Assembly Installation (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. Light Removal
 S 032-036
 (1)  
Remove the lens from the replacement light assembly.

 S 422-037

 (2)  
Install the light assembly with the mounting screws.

 S 432-038

 (3)  
Connect the electrical wires to the light assembly.

 S 412-039

 (4)
Close the panel you opened to get access to the light assembly.

 S 432-040

 (5)  
Install the lens.

 S 862-048

 (6)
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 712-041
 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 862-042
 (2)  Set the EMER LIGHTS switch to the OFF position.
 (a)  Make sure the emergency lights go off.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 33-51-05
 ALL  ú ú 04 Page 204 ú Jun 10/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 412-043
 (3) Close the access panel.
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 33-51-05
　
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