B

BILLBOARD LENS LEGEND
(EXAMPLE)

C

Passenger Information Signs - Component Location
Figure 102 (Sheet 2)

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747-400 MAINTENANCE MANUAL
 PASSENGER INFORMATION SIGNS - ADJUSTMENT/TEST
_____________________________________________
 1.  General_______
 A. This procedure has these tasks:
 (1)  
NO SMOKING and FASTEN SEAT BELT (NSFSB) Signs - Operational Test

 (2)  
LAVATORY OCCUPIED Signs - Operational Test

 (3)  
Passenger Signs - Operational Test of the Automatic Mode

 TASK 33-24-00-705-001
 2.  NO SMOKING and FASTEN SEAT BELT (NSFSB) Signs - Operational Test________________________________________________________________
 A. References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
SSM 33-24-01 and 33-24-02

 (3)  
WDM 33-24-24

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

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

 S 715-023

 (2)  
Do these steps to do the operational test:

 (a)  
At the control stand, P8, set the switch for the NO SMOKING signs to the on position. 1) Make sure you hear a chime sound in the passenger

 compartment. 2) Make sure the NO SMOKING signs come on.

 (b)  
Set the switch to the off position. 1) Make sure the NO SMOKING signs go off.

 (c)  
Set the switch for the FASTEN SEAT BELT signs to the on position. 1) Make sure you hear a chime sound in the passenger

 compartment.
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747-400 MAINTENANCE MANUAL
 2) Make sure the FASTEN SEAT BELT signs come on.
 (d)  Set the switch to the off position. 1) Make sure the FASTEN SEAT BELT signs go off.
 S 865-029
 (3)  Remove electrical power if it is not necessary (AMM 24-22-00/201).
 TASK 33-24-00-705-014
 3.  LAVATORY OCCUPIED Signs - Operational Test__________________________________________
 A. References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
SSM 33-24-02

 (3)  
WDM 33-24-24

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

 C. Procedure
 S 865-015
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 715-024

 (2)  
Do these steps to do the operational test:

 (a)  Do the steps that follow: 1) Make sure the LAVATORY OCCUPIED sign is off. 2) Close the lavatory door and move the door bolt to OCCUPIED. 3) Make sure the LAVATORY OCCUPIED sign comes on.
 TASK 33-24-00-715-027
 4.  Passenger Signs - Operational Test of the Automatic Mode________________________________________________________
 A. References
 (1)  
AMM 31-51-00/501, MAWEA

 (2)  
AMM 24-22-00/201, Manual Control

 (3)  
SSM 33-24-02

 (4)  
WDM 33-24-24

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

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