C. Procedure
S 862-016
(1)
Supply electrical power (Ref 24-22-00/201).
S 862-017
(2)
Open each applicable circuit breaker that supplies external power to the lavatory lights:
(a) On the load control center, P6.
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737-300/400/500MAINTENANCE MANUAL
S 212-018
(3)
LAVATORIES WITH A DOME LIGHT; Make sure the dome light in each lavatory is on.
S 212-019
(4)
LAVATORIES WITH AN INCANDESCENT LAMP IN THE MIRROR LIGHT; Make sure the mirror light in each lavatory is on dimly.
S 862-020
(5)
Close and lock the door of each lavatory.
(a)
Make sure the mirror light in the lavatory comes on brightly.
(b)
Make sure each "occupied" sign or light for the lavatory comes on.
S 862-021
(6) Open the door.
(a)
Make sure the fluorescent lamps in the mirror light go off.
(b)
Make sure each "occupied" sign or light goes off.
(c)
AIRPLANES WITH "LAVATORY" SIGNS;
Make sure each "lavatory" sign stays on.
S 862-022
(7)
Close each circuit breaker that was opened.
(a) Make sure each mirror light comes on brightly.
(8)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 862-007
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737-300/400/500MAINTENANCE MANUAL
GALLEY LIGHTS - DESCRIPTION AND OPERATION
_________________________________________
1. General_______
A. Each galley area is illuminated with fluorescent lights in the ceiling panels. Three-position switches provide off, dim, and bright control of the lights.
B. A galley light switch is located in each galley and controls the lighting for the galley.
C. For more data about this lighting system, refer to these sources:
(1)
SSM 33-26-00
(2)
WDM 33-26-21
2. Galley Lights_____________
A. Each galley has a fluorescent area light above the galley work area controlled by a 3-position switch (OFF-DIM-BRT) mounted on the galley control panel to provide two levels of brightness. The galley fluorescent lights are powered by 115v ac from the ground service bus through a circuit breaker on the P18-3 panel.
B. Each galley light has two fluorescent lamps. Each lamp is driven by its own ballast. Operation of all OFF/DIM/BRT switches are the same; 115v ac is applied to one ballast to operate one lamp in the DIM position, and to both ballasts to operate both lamps in the BRT position.
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737-300/400/500MAINTENANCE MANUAL
GALLEY LIGHTS - MAINTENANCE PRACTICES
_____________________________________
1. General_______
A. This procedure contains two tasks:
(1)
The replacement of a galley light lamp
(2)
The replacement of a galley light ballast.
TASK 33-27-00-962-001
2. Galley Lights - Lamp Replacement________________________________
A. References
(1) 24-22-00/201, Manual Control
B. Access
(1) Location Zone
107 Forward Half of Cabin
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