(e)  
Set the switch to the bright position. 1) Make sure all the ceiling lights become bright. 2) Make sure all the night lights stay off.

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 (f)  Set the switch to the off position.
 1) Make sure all the ceiling lights go off.
 2) Make sure all the night lights stay off.

 S 715-035
 (2)  Do a test of the window reveal lights.
 (a)  
At the attendant's panel, set the switch for the window reveal lights to the dim position. 1) Make sure all the window reveal lights come on dimly.

 (b)  
Set the switch to the bright position. 1) Make sure the window reveal lights become bright.

 (c)  
Set the switch to the off position.
 1) Make sure all the window reveal lights go off.

 (d)  
Set the GROUND SERVICE switch to the off position.

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

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 CEILING LIGHTS - MAINTENANCE PRACTICES
______________________________________
 1.  General_______
 A.  This procedure has these tasks:
 (1)  
CEILING LIGHT WITH A COVER SCREEN;
 Ceiling Light - Lamp Replacement

 (2)  
CEILING LIGHT WITHOUT A COVER SCREEN;
 Ceiling Light - Lamp Replacement

 (3)  
CEILING LIGHT WITH A COVER SCREEN;
 Ceiling Light - Ballast Replacement

 (4)  
CEILING LIGHT WITHOUT A COVER SCREEN;
 Ceiling Light - Ballast Replacement

 TASK 33-21-12-962-052
 2.  CEILING LIGHT WITH 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 962-058
 WARNING:_______DO NOT TOUCH THE SOCKETS OR THE METAL ENDS OF THE LAMP. WHEN ELECTRICAL POWER IS SUPPLIED TO THE LIGHT, ELECTRICAL SHOCK CAN OCCUR.
 (1)  Replace the lamp.
 (a)  
Pull open the cover screen.

 (b)  
Carefully replace the lamp.

 NOTE: The lamp replacment is easier if you put the right end
____ of the new lamp in its socket first. This will make the light come on immediately, if the other ceiling lights are on.
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 (c)  Close the cover screen.
 D.  Lamp Test
 NOTE: Only do these steps if the light stayed off after you replaced the
____
 lamp.

 S 862-055
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 712-054

 (2)  
At the attendant's panel, set the switch for the ceiling light to the off position and then to the on position.

 (a)  Make sure the new lamp comes on correctly.
 S 862-056
 (3)  
Set the switch to the usual position.

 S 862-057

 (4)  
　
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