(6)
The master control station directs all operations in the control segment. It continuously receives the data collected by the monitor stations. This data is used to formulate the navigation message which contains individual orbital parameters and clock corrections for all satellites. The navigation message is relayed to the satellites three times a day by the upload stations.
B. Control
(1) Do these steps to put the system in operation.
(a)
Close the MMR L and MMR R circuit breakers on the P7 panel.
(b)
Check GPS operation. 1) Push the INIT REF key on one of the FMCS CDUs. 2) Push the line select key (LSK) that is adjacent to <INDEX. 3) Push the line select key (LSK) adjacent to <POS. 4) Push the PREV PAGE key on the CDU. 5) Make sure that the POS REF 3/3 page shows the position of
GPS L and GPS R.
NOTE: It can take up to 10 minutes for GPS data to be
____ displayed on the CDU.
(c) If the GPS position is not displayed after 10 minutes, check to see if the GPS is enabled. 1) Push the PREV PAGE key on the CDU. 2) Make sure that the prompt below GPS NAV reads INHIBIT> on
the POS REF 2/3 page.
3) If the prompt below GPS NAV reads ENABLE>, push the
adjacent lsk.
4) Make sure that the prompt changes to read INHIBIT>.
5) Push the NEXT PAGE key on the CDU.
6) Make sure that the POS REF 3/3 page shows the position of
GPS L and GPS R.
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747-400 FAULT ISOLATION/MAINT MANUAL
GLOBAL POSITIONING SYSTEM
COMPONENT 102 FIG. SHT QTY ACCESS/AREA AMM REFERENCE
ANTENNA - L GLOBAL POS SYS, B10012 2 1 34-58-02
ANTENNA - R GLOBAL POS SYS, B10013 2 1 34-58-02
CIRCUIT BREAKER - FLT COMPT, P6
IRS AC CENTER, C8937 1 6D8 *
IRS AC LEFT, C8935 1 6D7 *
IRS AC RIGHT, C8939 1 6D9 *
IRS DC CENTER, C8938 1 6E8 *
IRS DC LEFT, C8936 1 6E7 *
IRS DC RIGHT, C8940 1 6E9 *
CIRCUIT BREAKER - FLT COMPT, P7
MMR LEFT, C11144 1 *
MMR RIGHT, C11145 1 *
COMPUTER - (FIM 34-61-00/101)
L FLIGHT MANAGEMENT, M7442
R FLIGHT MANAGEMENT, M7443
COMPUTER - (FIM 45-10-00/101)
CENTRAL MAINTENANCE, M7373
RECEIVER - L MULTI-MODE, B10009 1 1 117AL, MAIN EQUIP CTR E1-2 34-31-01
RECEIVER - R MULTI-MODE, B10010 1 1 117AL, MAIN EQUIP CTR E1-4 34-31-01
UNIT - (FIM 31-61-00/101)
C EFIS/EICAS INTERFACE, M7352
L EFIS/EICAS INTERFACE, M7353
R EFIS/EICAS INTERFACE, M7351
UNIT - (FIM 34-21-00/101)
C INERTIAL REFERENCE, B7163
L INERTIAL REFERENCE, B7161
R INERTIAL REFERENCE, B7162
UNIT - (FIM 34-61-00/101)
C CONTROL DISPLAY, M7441
L CONTROL DISPLAY
R CONTROL DISPLAY
* SEE THE WDM EQUIPMENT LIST
Global Positioning System - Component Index
Figure 101
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MULTI-MODE RECEIVER
Global Positioning System - Component Location
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Global Positioning System - Component Location 中國航空網(wǎng) 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(106)
