32-61-00
 ALL  ú ú 04 Page 541 ú Feb 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (x)  
Put an actuator on the sensor, S1639 (right wing gear up/lock sensor).

 (y)  
Make sure the CDU display of label 272/00 is shown as follows:

 ~............................................................ | Sensor and Bit Location | Bit State | Description | .............................................................. |L Body Gear Down/Lock on Bit 11 | 1 |GEAR DOWN | .............................................................. |L Wing Gear Down/Lock on Bit 12 | 1 |GEAR DOWN | .............................................................. |R Wing Gear Down/Lock on Bit 13 | 1 |GEAR DOWN | .............................................................. |R Body Gear Down/Lock on Bit 14 | 1 |GEAR DOWN | .............................................................. |L Body Gear Up/Lock on Bit 15 | 0 |NOT UP | .............................................................. |L Wing Gear Up/Lock on Bit 16 | 0 |NOT UP | .............................................................. |R Wing Gear Up/Lock on Bit 17 | 1 |GEAR UP | .............................................................. |R Body Gear Up/Lock on Bit 18 | 0 |NOT UP | 2.................................…............….............1

 (z)  
Remove the actuator from the sensor, S1639 (right wing gear up/lock sensor).

 S 865-061
 (7)  
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the Overhead Circuit Breaker Panel, P7:

 (a)  
7F22 LANDING GEAR DSP & CONT PRI

 (b)  
7F25 PSEU SECT 1

 I.
Put the Airplane in Its Usual Condition

 NOTE: Do not do these steps if you will continue to do the other tasks
____
 in this procedure.

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 32-61-00
 ALL  ú ú 04 Page 542 ú Feb 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 865-213
 WARNING: USE THE PROCEDURE IN AMM 32-00-30/201 TO REMOVE THE DOOR LOCKS.
_______ THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
 (1)  
Remove the door locks for the landing gear and close the doors (AMM 32-00-30/201).

 S 445-214

 (2)  
Do this task: Put Safety-Sensitive Systems Back to the Condition Before Air Mode Simulation (AMM 32-09-02/201).

 S 865-215

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

 TASK 32-61-00-705-064
 6. Test of the Door Warning Sensors
________________________________
 A. General
 (1)  
The door warning test makes sure the door sensors operate correctly. Each door is examined independently of the other doors.

 B.
References

 (1)  
AMM 09-11-00/201, Towing

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

 (3)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (4)  
AMM 32-00-30/201, Landing Gear Door Locks

 (5)  
AMM 32-09-02/201, Air/Ground Relays

 C.
Special Tools and Equipment

 (1)  
A27092-84 - Actuator/Deactuator Set - Proximity Sensors

 D.
Access

 (1)  
Location Zone 114 Nose Gear Wheel Well RH 135 Wing Landing Gear Wheel Well LH 136 Wing Landing Gear Wheel Well RH 137 Body Landing Gear Wheel Well LH 138 Body Landing Gear Wheel Well RH 731 Wing Landing Gear Door, Center Section Inboard Panel LH 741 Wing Landing Gear Door, Center Section Inboard Panel RH 752 Body Landing Gear Door, Forward Inboard Panel LH 762 Body Landing Gear Door, Forward Inboard Panel RH

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