33-51-02
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 EMERGENCY LIGHTS - TROUBLE SHOOTING
___________________________________
 1.  General_______
 A.  Trouble shooting of the emergency lights is easily done independently of the other tests or functions. The batteries in the power supplies must have a sufficient charge to operate the emergency lights (AMM 33-51-51/201).
 B.  All trouble shooting procedures as based on the assumption that wiring is OK. If the trouble shooting procedure does not correct the problem, do a check of the wiring with the wiring diagram.
 C.  To operate the emergency lights, do these steps:
 (1)  At the overhead panel, P5, or the attendant's panel, set the emergency lights switch to the on position.
 NOTE: Keep a record of the time that the emergency lights are on.
____
 (a)  Quickly make sure the emergency lights come on.
 (2)  
Set the emergency lights switch to the usual position.

 (3)  
If it is necessary, charge the batteries for the emergency lights (AMM 33-51-51/201).

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 33-51-02
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL

Emergency Lights Troubleshooting
Figure 101

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 33-51-02
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
E83792
A
737-300/400/500MAINTENANCE MANUAL
 EMERGENCY LIGHTS - ADJUSTMENT/TEST
__________________________________
 1.  General_______
 A.  This procedure contains these tasks for the emergency lights:
 (1)  
Emergency Lights - Operational Test with the Pilot's Switch

 (2)  
Emergency Lights - Operational Test with the Pilot's and Attendant's Switches

 (3)  
Emergency Lights - Functional Test

 B.  The first operational test makes sure the emergency lights come on. After this test, you charge the batteries for the emergency lights if it is necessary (AMM 33-51-51/201).
 C.  The second operational test makes sure each component in the emergency lighting system operates correctly. Some of these components are the pilot's control switch, attendant's control switch, and circuit breakers. The emergency lights are on for more time during this test than during the operational test. After this test, you charge the batteries for the emergency lights if it is necessary (AMM 33-51-51/201).
 D.  The functional test makes sure the batteries can supply electrical power to the emergency lights for a minimum of 10 minutes. When you start this test, the batteries must be sufficiently charged. To prepare the airplane for flight after this test, electrical power is supplied for 16 hours to fully charge the batteries.
 TASK 33-51-02-715-001
 2.  Emergency Lights - Operational Test with the Pilot's Switch___________________________________________________________
 A.  References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 33-51-51/201, Power Supply

 (3)  
SSM 33-51-00 thru 33-51-99

 (4)  
WDM 33-51-11 thru 33-51-99

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

 C.  Procedure
 S 715-044
 (1)  Do the test.
 NOTE: Keep a record of the time that the emergency lights are on.
____
 (a)  Supply electrical power (AMM 24-22-00/201).
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