(b)
Set the switch to the on position.
1) Make sure the new light comes on correctly.
(c)
Set the switch to the usual position.
(d)
Remove electrical power if it is not necessary
(AMM 24-22-00/201).
(e)
Install the lens in the window reveal light. 1) Put the outboard edge of the lens in the edge along the bottom of the outboard extrusion. 2) Push the inboard edge of the lens against the inboard
extrusion. 3) Hold the lens in its position and tighten each fastener.
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A
737-300/400/500MAINTENANCE MANUAL
READING LIGHTS - DESCRIPTION AND OPERATION
__________________________________________
1. General_______
A. Individual passenger reading lights are provided in the Passenger Service Unit (PSUs) (Ref 25-23-00) above each seat group and Attendant Service Units (ASUs) above each attendants station. A pushbutton switch located adjacent to each reading light enables the passengers to turn their reading lights on and off. Each reading light consists of an incandescent lamp mounted in movable reflector assemblies which provide directional illumination.
B. For more data about this lighting system, refer to these sources:
(1)
SSM 33-23-00 thru 33-23-99
(2)
WDM 33-23-11 thru 33-23-99
2. Reading Lights______________
A. The reading lights are located in each of the PSUs and ASUs. They are controlled by pushbutton switches located adjacent to each reading light.
B. Power is supplied by the 28v ac bus 1 and 2. Circuit breakers on the P18-3 panel connect electrical power to the left and right passenger reading light switches. Reading lights are turned on by pushing the pushbutton switches.
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33-23-00
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A
737-300/400/500MAINTENANCE MANUAL
OVERHEAD STORAGE BIN (REF) 1
PSU SEE A 1
PASSENGER COMPARTMENT (EXAMPLE) LENS SWITCH
PASSENGER SERVICE UNIT (PSU)
LENS
SWITCH
(EXAMPLE)
(EXAMPLE)
READING
A 2 LIGHT
PASSENGER SERVICE UNIT (PSU)
(EXAMPLE)
1 THE LEFT AND RIGHT SIDES ARE EQUIVALENT
2 READING LIGHT WITH A CIRCULAR LENS A 3
3 READING LIGHT WITH A RECTANGULAR LENS
Reading Lights - Component Location
Figure 1
E01265
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
READING LIGHTS - MAINTENANCE PRACTICES
______________________________________
1. General_______
A. This procedure contains these tasks:
(1)
Reading Light - Lamp Replacement
(2)
Reading Light - Adjustment
(3)
PSU Circuit Board - Replacement
B. The switches for the reading lights are installed on the circuit board in each passenger service unit (PSU).
TASK 33-23-00-962-001
2. Reading Light - Lamp Replacement (Fig. 201)________________________________
A. General
(1)
If the reading light has a circular lens, you remove the lens to replace the lamp.
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