(10)
Make sure the TERR FAIL message shows on the ND's.
S 755-183
(11)
Make sure the GND PROX SYS (Advisory) message shows on the main EICAS display.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
34-46-00
ALL ú ú 01B Page 518 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 755-184
(12)
Make sure the TERR SYS (Status) message shows on the auxiliary EICAS display.
S 865-185
(13)
Close this circuit breaker:
(a) P7 Circuit Breaker Panel
1) D06 TERR DSPL
S 755-186
(14)
Make sure the terrain display data shows on the ND's.
S 755-187
(15)
Make sure the TERR FAIL message does not show on the ND's.
S 755-188
(16)
Make sure the GND PROX SYS (Advisory) message does not show on the main EICAS display.
S 755-189
(17)
Make sure the TERR SYS (Status) message does not show on the auxiliary EICAS display.
M. Put the Airplane Back to Its Usual Condition
S 865-190
(1)
Close this circuit breaker and remove the DO-NOT-CLOSE tag:
(a) P414 Power Distribution Center Panel
1) L08 CMC L
(2)
Remove the test equipment.
(3)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 085-191
S 865-192
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
34-46-00
ALL ú ú 01B Page 519 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
GROUND PROXIMITY WARNING COMPUTER - REMOVAL/INSTALLATION
________________________________________________________
1. General_______
A. This subject has two tasks. There is one task for the removal and one task for the installation of the ground proximity warning computer. The installation task also has a computer status check.
B. The ground proximity warning computer (X85) is found in the main equipment center on shelf No. 4 of the electronic equipment rack E1. All electrical connections are at the rear of the unit.
TASK 34-46-01-004-021
2. Ground Proximity Warning Computer Removal_________________________________________
A. References
(1) AMM 20-11-22/401, Rack-Mounted Electrical/Electronic Module
B. Access
(1) Location Zone
117 Electrical and Electronics Compartment, LH 221/222 Control Cabin
C. Procedure
S 864-022
(1) Open these circuit breakers and attach a DO-NOT-CLOSE tag:
(a) P7 Overhead Circuit Breaker Panel
1) 7D9 GND PROX WARN
2) D06 TERR DSPL
S 024-019
CAUTION: DO NOT TOUCH THE CONNECTOR PINS OR OTHER CONDUCTORS ON THE
_______ GROUND PROXIMITY WARNING COMPUTER. IF YOU TOUCH THESE CONDUC-TORS, ELECTROSTATIC DISCHARGE FROM YOUR BODY CAN CAUSE DAMAGE TO THE GROUND PROXIMITY WARNING COMPUTER.
(2) Do this task to remove the ground proximity warning computer: "Rack-Mounted Electrical/Electronic Module Removal" (AMM 20-11-22/401).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
34-46-01
ALL ú ú 02 Page 401 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
TASK 34-46-01-404-023
3. Ground Proximity Warning Computer Installation
______________________________________________
A. References
(1)
AMM 20-11-22/401, Rack-Mounted Electrical/Electronic Module
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 導航 NAVIGATION 3(31)
