TASK 33-21-12-962-036
 3.  CEILING LIGHT WITHOUT A COVER SCREEN; Ceiling Light - Lamp Replacement (Fig. 201)
________________________________
 A.  References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
SSM 33-22-00

 (3)  
WDM 33-00-01, Lamp Usage Chart

 (4)  
WDM 33-22-11 thru 33-22-99

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

 C.  Procedure
 S 962-038
 (1)  Replace the lamp.
 (a)  Do one of these steps to remove electrical power from the light: 1) At the attendant's panel, set the switch to the off
 position and attach the DO-NOT-OPERATE tag.
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A

737-300/400/500
MAINTENANCE MANUAL

OUTBOARD EDGE OF STOWAGE BIN (REF)
ELECTRICAL CONNECTOR CEILING LIGHT WITH A COVER SCREEN BALLAST (EXAMPLE)
RETAINING STUD
TAB
RETAINING SCREW
(3 LOCATIONS)

LAMP
RETAINING SCREW (2 OR 3 LOCATIONS)
CEILING LIGHT WITHOUT A COVER SCREEN (EXAMPLE)
Ceiling Lights - Lamp and Ballast Replacement
Figure 201

B56172
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 2)  Open each applicable circuit breaker for the ceiling light and attach the DO-NOT-CLOSE tag: a) On the load control center panel, P18.
 (b)  Carefully replace the lamp.
 NOTE: If the lamp has a cover or end caps, remove these parts
____ and install them on the new lamp.
 S 712-039
 (2)  Do a test of the new lamp.
 (a)  
Supply electrical power (AMM 24-22-00/201).

 (b)  
Remove the each DO-NOT-OPERATE or DO-NOT-CLOSE tag. 1) Close each circuit breaker that was opened.

 (c)  
Set the switch to the on position. 1) Make sure the new lamp comes on correctly.

 (d)  
Set the switch to the usual position.

 (e)  
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 TASK 33-21-12-962-044
 4.  CEILING LIGHT WITH COVER SCREEN; Ceiling Light - Ballast Replacement (Fig. 201)
___________________________________
 A.  General
 (1)  Frequently a ballast can be repaired with the replacement of the fuse under the right end of the lamp.
 B.  References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
SSM 33-22-00

 (3)  
WDM 33-22-11 thru 33-22-99

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

 D.  Ballast Replacement
 S 862-046
 (1)  Do one of these steps to remove electrical power from the ballast:
 (a)  At the attendant's panel, set the switch for the ceiling light to the off position and attach the DO-NOT-OPERATE tag.
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 33-21-12
 ALL  ú ú 01 Page 204 ú Mar 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 (b)  Open each applicable circuit breaker for the ceiling light and attach the DO-NOT-CLOSE tag: 1) On the load control center panel, P18.
 S 962-047
 (2)  Replace the light assembly.
 NOTE:____The ballast is part of the light assembly. To replace the ballast, you must replace the light assembly.
 (a)  
Pull open the cover screen.
　
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