B. Control
_______
 (1)  
To place the system in operation, supply electrical power
 (Ref 24-22-00/201).

 (2)  
On overhead panel P11, make sure the GND CALL circuit breaker is closed.

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757
FAULT ISOLATION/MAINT MANUAL

GROUND CREW CALL SYSTEM

* SEE THE WDM EQUIPMENT LIST
Ground Crew Call System - Component Index
Figure 101

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E08458
A
757 FAULT ISOLATION/MAINT MANUAL

NOSE GEAR INTERPHONE
PANEL, P62 (REF)

Ground Crew Call System - Component Location
Figure 102

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757 MAINTENANCE MANUAL
 GROUND CREW CALL SYSTEM - ADJUSTMENT/TEST
_________________________________________
 TASK 23-43-00-715-001
 1.  Operational Test - Ground Crew Call___________________________________
 A. General
 (1)  This procedure contains a task which gives the operational test for the ground crew call system. For a satisfactory result, make sure the call signals between the nose gear wheel well and the flight compartment operate.
 B. References
 (1)  AMM 24-22-00/201, Electrical Power - Control
 C. Access
 (1)  Location Zones
 211/212 Flight Compartment - Sect 41
 711 Nose Landing Gear

 D. Prepare for the Operational Test
 S 865-002
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 865-003

 (2)  
Make sure these circuit breakers on the overhead panel, P11, are closed:

 (a)  
11B18, WARN ELEX B

 (b)  
11H31, GND CALL

 (c)  
11H35, AURAL WARN SPKR RIGHT

 E. Do the Ground Crew Call System Operational Test
 S 865-004
 (1)  Momentarily push the FLIGHT DECK CALL button on the nose gear panel (P62) on the nose landing gear.
 (a)  
Make sure you hear one chime in the flight compartment.

 (b)  
Make sure the GND CALL switch-light on the pilots' call panel (M51) comes on.

 (c)  
Make sure the blue GND CALL switch-light stays on for 30 (|5) seconds then goes off.

 S 865-005
 (2)  
Momentarily push the GND CALL switch-light.

 (a)  Make sure you hear the horn in the wheel well of the nose landing gear while you push the GND CALL switch-light.

 (3)  
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 S 865-006
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757 MAINTENANCE MANUAL
 GROUND CREW CALL HORN - REMOVAL/INSTALLATION
____________________________________________
 1.  General_______
 A.  The ground crew call horn is installed on the forward left side of the nose gear wheel well.
 B.  This procedure contains two tasks. The first task removes the ground crew call horn from the left side of the nose gear wheel well. The second task installs the ground crew call horn to the left side of the nose gear wheel well.
　
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