(f)  
From the front of the panel, push the cap assembly into its position.

 (g)  
Connect the electrical wires to the indicator light terminals and remove the tags from the wires.

 (h)  
Remove the DO-NOT-CLOSE tags and close the circuit breakers which you opened to remove the indicator light.

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737-300/400/500MAINTENANCE MANUAL
 S 712-034
 (2)  Do a Test of the Indicator Lights:
 (a)  
Supply electrical power (AMM 24-22-00/201).

 (b)  
Push the front of the indicator light.

 (c)  
Make sure that the indicator light comes on.

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

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A
737-300/400/500MAINTENANCE MANUAL
 LIGHTED PUSHBUTTON SWITCHES - MAINTENANCE PRACTICES
___________________________________________________
 1.  General
_______
 A.  This procedure contains two tasks for the replacement of the lamp in a lighted pushbutton switch (referred to as the switch):
 (1)  
The removal of the lamp.

 (2)  
The installation of the lamp.

 B.  The switches are installed on the instrument panels of the flight compartment.
 C.  Each switch has two light circuits that are electrically isolated.
 (1)  
One circuit controls the caution indicator light. This indicator light shows the condition of the airplane.

 (a)  
The Master Dim and Test module supplies 28 volts dc to each indicator light.

 (b)  
To do a check of the indicator lights, set the LIGHTS switch of the center instrument panel, P2, to the TEST position.

 (2)  
The other circuit controls the position indicator light. This indicator light shows if the lighted pushbutton switch is on or off.

 (a)  
5 volts ac from the dimmer controls installed in the instrument panels controls each indicator light.

 (b)  
To do a check of the indicator light, you must push the lighted pushbutton switch.

 NOTE: Refer to the applicable system procedure before you
____
 push the switch.

 TASK 33-11-82-962-001
 2.  Lighted Pushbutton Switch - Lamp Removal (Fig. 201)
________________________________________
 A.  References
 (1)  AMM 24-22-00/201, Manual Control
 B.  Access
 (1)  Location Zone
 101 Control Cabin - Left
 102 Control Cabin - Right

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A 737-300/400/500MAINTENANCE MANUAL
SWITCH PANEL SEE A
FLIGHT COMPARTMENT

1  ENGINE  2 
REVERSER  REVERSER 
PMC  PMC 
ON  ON 
INOP  LOW IDLE  INOP 
LIGHTED PUSHBUTTON 
SWITCH PANEL  SWITCH (EXAMPLE) 
(EXAMPLE)  SEE  B 
A 

Lighted Pushbutton Switch
Figure 201 (Sheet 1)

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