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 A.  The pilots lighted pushbutton switches have two legends. Each legend is illuminated by an independent two-lamp circuit.
 (1)  
The illuminated legends that indicate pushbutton switch system status are supplied with 5 volts ac power from an instrument panel light dimmer. If the pushbutton switch is activated, light intensity is controlled by a potentiometer and remote dimmer transformer.

 (2)  
The legend lights which identify system functions (Ref 33-12-00/001) have their illumination intensity controlled by the master dim and test module.

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 33-11-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL
PILOTS' PANEL LIGHTS
COMPONENT*  SHT 102 FIG.  QTY * ACCESS/AREA  AMM REFERENCE 
CIRCUIT BREAKER  1  FLT COMPT, P6  * 
PILOTS' PANEL CONTROL STAND PANEL LIGHTSHIELD PANEL OBSERVER PANEL OVERHEAD PANEL DIMMER CONTROL - 1  FLT COMPT, CONTROL STAND FLT COMPT, CONTROL STAND FLT COMPT, CONTROL STAND FLT COMPT, P7 FLT COMPT, P5 33-11-00 33-11-00 33-11-00 33-11-00 33-11-00 
RELAY LIGHT -CONTROL STAND FLOOD INSTRUMENT PANEL FLOOD LIGHTSHIELD FLOOD  1  FLT COMPT FLT COMPT, P6  33-11-00 * 
SWITCH-LIGHT  2  FLT COMPT  * 

* SEE THE SSM OR WDM FOR THE EQUIPMENT NUMBER, QUANTITY, AND LOCATION OF EACH COMPONENT IN THE LIGHTING  CIRCUIT
Pilots' Panel Lights - Component Index
Figure 101

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 ú  01  Page 101
 ú  Oct 10/93 

BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL
CONTROL DIMMERS (4 LOCATIONS)

FLIGHT COMPARTMENT

Pilots' Panel Lights - Component Location
Figure 102 (Sheet 1)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL

LIGHT SWITCH
(EXAMPLE)

Pilots' Panel Lights - Component Location (Details from Sht 1)
Figure 102 (Sheet 2)

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A
747-400 MAINTENANCE MANUAL
 PILOTS' PANEL LIGHTS - ADJUSTMENT/TEST
______________________________________
 1.  General_______
 A.  The tasks in this procedure have these operational tests:
 (1)  
The floodlights for the pilots panel.

 (2)  
The panel lights for the pilot.

 (3)  
The standby power lights.

 B.  The floodlights are installed in four locations.
 C.  The panel lights for the pilot are the lightplates, the instrument indicator lights, and the lighted pushbutton switches.
 TASK 33-11-00-705-001
 2.  Floodlights Operational Test____________________________
 A.  References
 (1)  
24-22-00/201, Manual Control

 (2)  
SSM 33-11-01

 B.  Access
 (1)  Location Zone
 200 Pilots Instrument Panel, Flight Deck

 C.  Procedure
 S 865-002
 (1)  
Supply electrical power (Ref 24-22-00/201).

 S 865-003

 (2)  
Set these floodlight controls fully counterclockwise:
　
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