C. Prepare to replace the galley light lamps.
 S 862-019
 (1)  
Supply electrical power (Ref 24-22-00/201).

 S 862-020

 (2)  
Make sure this circuit breaker is closed:

 (a)  P18-3 Load Control Center - Left
 1) GALLEY LIGHTS

 S 722-021
 (3)  Find the defective lamps:
 (a)  
Put the galley light switch in the BRT position.

 (b)  
Examine the galley lights to find out which of the lamps are defective.

 (c)  
Put the galley light switch in the OFF position.

 S 862-022
 (4) Open this circuit breaker and attach a DO-NOT-CLOSE tag:
 (a)  P18-3 Load Control Center - Left
 1) GALLEY LIGHTS

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A
737-300/400/500MAINTENANCE MANUAL
 D.  Procedure
 S 962-003
 (1)  Replace the galley light lamp.
 (a)  
Put an Allen wrench in the holes of the light assembly and turn the fastener 1/4 turn.

 (b)  
Lower the light assembly to the full open position and let it hang by its lanyard.

 NOTE: To lower the light assembly to its full open position,
____ disconnect the shorter lanyard.
 (c)  
Turn the quick-release fasteners on the light assembly.

 (d)  
Open the access panel on the light assembly.

 WARNING: MAKE SURE YOU DO NOT BREAK THE FLUORESCENT LAMPS.
_______ BROKEN FLUORESCENT LAMPS CAN CAUSE INJURY TO PERSONS.
 (e)  Replace the lamp.
 S 722-005
 (2)  Do a test of the galley light:
 (a)
Remove the DO-NOT-CLOSE tag and close this circuit breaker:

 1)  P18-3 Load Control Center - Left a) GALLEY LIGHTS

 (b)  
Put the galley light switch in the BRT position. 1) Make sure the galley light is on at a bright intensity.

 (c)  
Put the galley light switch in the DIM position.

 1)  Make sure the galley light changes from a bright intensity to a dim intensity.

 (d)  
Put the galley light switch in the OFF position.

 E.  Put the airplane back to its usual condition.
 S 412-023
 (1)  Install the light assembly.
 (a)  
Close the access panel.

 (b)  
Turn the quick-release fasteners 1/4 turn to the closed position.

 (c)  
Lift the light assembly into its position and close the latch.

 NOTE: Before you close the light assembly, connect the
____
 shorter lanyard.

 S 862-024
 (2)  Remove electrical power if it is not necessary
 (Ref 24-22-00/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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737-300/400/500MAINTENANCE MANUAL
 TASK 33-27-00-962-004
 3.  Galley Light - Ballast Replacement
__________________________________
 A.  References
 (1)  24-22-00/201, Manual Control
 B.  Access
 (1)  Location Zone
 107 Forward Half of Cabin
 108 Aft Half of Cabin

 C.  Prepare to replace the galley light ballast:
 S 862-025
 (1)  
Supply electrical power (Ref 24-22-00/201).

 S 862-026

 (2)  
Open this circuit breaker and attach a DO-NOT-CLOSE tag:

 (a)  P18-3 Load Control Center - Left
 1) GALLEY LIGHTS

 D.  Procedure
 S 962-007
 (1)  Replace the galley light ballast.
 (a)  
Put an Allen wrench into the holes of the light assembly and turn the fastener 1/4 turn.

 (b)  
Lower the light assembly to the full open position and let it hang by its lanyard.
　
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