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747-400 MAINTENANCE MANUAL
b) NAV RADIO VOR R
(c)
Make sure that all interfacing systems are servicable.
(d)
Make sure the inertial reference system (IRS) is aligned in the NAV mode (Ref 34-21-00/201).
(e)
Tune the VOR/MKR receivers to a valid VOR frequency.
(f)
Set the mode select switch on the EFIS control panel to the VOR position.
(2) Turn off procedure
(a)
Make sure these circuit breakers are open:
1) P7 Overhead Circuit Breaker Panel
a) NAV RADIO MKR VOR L
b) NAV RADIO VOR R
(b)
Remove electrical power (Ref 24-22-00/201).
NOTE: Be sure that the IRU's are turned off before removing
____ electrical power (Ref 34-21-00/501).
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747-400
MAINTENANCE MANUAL
MINS BARO
FPV MTRS RST STD VOR MAP 80
RADIO BARO IN HPA
16040APP PLN
VOR L 20 320 VOR R
OFF CTR 10 TFC 640 OFF
ADF L 5 ADF R
WXR STA WPT ARPT DATA POS TERR
CAPTAIN'S AND FIRST OFFICER'S
EFIS CONTROL PANEL
(EXAMPLE)
CONTROL DISPLAY UNIT
2L 1L 1 3 5 / // / / /0 0 081 0 0 A C R S LV O R S E A0. N A V 1051 R A D I O 15 20 24
VOR TEST PREPARATION
VOR Navigation System Seft-Test Display Figure 6 (Sheet 1)
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MAINTENANCE MANUAL
FAILURE WARNING INDICATION NCD INDICATION VALID DATA VOR INDICATION
NDVORL VOR L VOR L VOR L VOR R ND VOR L FROM CRS 000108.00 NDVOR LVOR L VOR R 108.00 108.00
DISPLAY VOR AND NARROW BEARING POINTER FLAGREMOVE COURSE DEVIATION BAR AND SCALE.DISPLAY NAV DATA SOURCE REMOVE COURSE DEVIATION BAR NARROW BEARING POINTER INDICATE 180 |2 DEGREESREMOVE VOR AND NARROW BEARING POINTER FLAGDISPLAY NAV DATA SOURCE AND FREQUENCY
REMOVE TO/FROM ANNUNCIATOR REMOVE TO/FROM ANNUNCIATION TO/FROM ANNUNCIATION WITH COURSE DEVIATIONBAR CENTEREDDISPLAY COURSE DEVIATION BAR, SCALE AND
VOR TEST PROCEDURE
VOR Navigation System Self-Test DisplaysFigure 6 (Sheet 2)
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747-400 FAULT ISOLATION/MAINT MANUAL
VOR NAVIGATION SYSTEM
COMPONENT 102 FIG. SHT QTY ACCESS/AREA AMM REFERENCE
ANTENNA - VOR/LOC, B67 1 1 VERTICAL STABILIZER TIP 34-51-02
CIRCUIT BREAKER - 1 FLT COMPT, P7
MKR VOR L, C759 1 7A09 *
COMPUTER - (FIM 45-10-00/101) PANEL - (FIM 31-61-00/101) DIVIDER - (FIM 34-31-00/101) COMPUTER - (FIM 34-61-00/101) VOR R, C756 L CENTRAL MAINTENANCE, M7373 CAPT'S EFIS CONTROL, M7354 F/O'S EFIS CONTROL, M7364 L VOR/LOC RF PWR, B8316 R VOR/LOC RF PWR, B8317 R CENTRAL MAINTENANCE, M7374 R FLIGHT MANAGEMENT, M7433 L FLIGHT MANAGEMENT, M7442 1 7B21 *
RECEIVER - LEFT VOR/MKR, B621 2 1 117AL, MAIN EQUIP CTR, E2-3 34-51-01
UNIT - (FIM 31-61-00/101) UNIT - (FIM 34-61-00/101) RESISTOR - (FIM 34-31-00/101) RELAY - (FIM 34-61-00/101) RELAY - (FIM 32-09-00/101) RECEIVER - RIGHT VOR/MKR, B629 NO. 1 FMC MASTER SW, R7229 NO. 1 AIR/GND, R983 N0. 4 AIR/GND, R7365 NO. 5 AIR/GND, R7366 C EFIS/EICAS INTERFACE, M7352 R EFIS/EICAS INTERFACE, M7351 L EFIS/EICAS INTERFACE, M7353 R CONTROL DISPLAY, M7440 C CONTROL DISPLAY, M7441 L CONTROL DISPLAY, M7439 L ILS TUNING SOURCE SELECT, M4528 NO. 2 AIR/GND, R768 NO. 2 FMC MASTER SW, R7230 R ILS TUNING SOURCE SELECT, M4529 2 1 117AL, MAIN EQUIP CTR, E2-2 34-51-01
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