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747-400 MAINTENANCE MANUAL
(w)
Push the LSK on the left CDU that is adjacent to <WXR. 1) Make sure a test pattern shows on the captain's ND.
(x)
Push the LSK on the left CDU that is adjacent to <WXR again. 1) Make sure the test pattern on the captain's ND is removed.
(y)
Push the MENU key on the right CDU to show the MENU.
(z)
Push the line select key (LSK) on the right CDU that is adjacent to <EFIS CP to show the EFIS CONTROL. (aa) Push the line select key (LSK) on the right CDU that is adjacent to <OPTIONS. (ab) Push the LSK on the right CDU that is adjacent to <WXR. 1) Make sure a test pattern shows on the first officer's ND. (ac) Push the LSK on the right CDU that is adjacent to <WXR again. 1) Make sure the test pattern on the first officer's ND is removed. (ad) Remove the DO-NOT-CLOSE tags and close these circuit breakers:
1) P7 Overhead Circuit Breaker Panel a) 7F11 EFIS CONT L b) 7F16 EFIS CONT R
(ae) Set the SYS switch on the WXR control panel to the L position.
(af) Set the WXR switch/indicator on each of the EFIS control panels to the on position. 1) Make sure a test pattern shows on the captain's and the
first officer's NDs. (ag) If no more tests of the weather radar are necessary, Do the Weather Radar System Shutdown Task.
H. Mode Test
S 735-091
(1) Do the weather radar mode test.
WARNING: DO NOT OPERATE THE WEATHER RADAR WHILE FUEL IS ADDED OR
_______ REMOVED FROM THE AIRPLANE. DO NOT TRANSMIT RF ENERGY WHILE FUEL IS ADDED OR REMOVED IN AN AREA 200 FEET OR LESS OF THE ANTENNA. THIS CAN CAUSE AN EXPLOSION.
DO NOT OPERATE THE WEATHER RADAR IN A HANGAR OR OTHER ENCLOSURE. MAKE SURE NO PERSONS ARE IN THE AREA 15 FEET OR LESS FROM THE ANTENNA WHEN IT TRANSMITS RF ENERGY. RF ENERGY CAN CAUSE INJURY TO PERSONS.
(a)
Make sure the range switch on the captain's EFIS control panel is set to 40.
(b)
Make sure the range switch on the first officer's EFIS control panel is set to 40.
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MAINTENANCE MANUAL
(c)
Set the mode selector switch on the WXR control panel as shown below. 1) Make sure the mode messages are shown on each ND below.
(Fig. 501 and 502) as follows: ~........................................ | CONTROL PANEL | ND MODE | | SWITCH POSITION | MESSAGE | .......................................... | TEST | TEST | .......................................... | WX | WXR | .......................................... | WX/TURB | WX+T | .......................................... | MAP | MAP | 2...................…....................1
(d)
Set the SYS switch on the WXR control panel to the R position.
OUTER RANGE RING
WEATHER
DISPLAY
HALF RANGE
MODE MESSAGE(CYAN)MAGENTA
ANT
TILT
RED (CYAN)
GAIN
YELLOW (CYAN)
GREEN AIRPLANE SYMBOL
ND WEATHER DISPLAYS
Weather Radar Displays Figure 502
A46697
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747-400
MAINTENANCE MANUAL
(e)
Set the mode selector switch on the WXR control panel as shown below. Make sure the mode messages are shown on each ND (Fig. 501 and 502) as follows: ~........................................ |CONTROL PANEL | ND MODE | |SWITCH POSITION | MESSAGE | .......................................... | TEST | TEST | .......................................... | WX | WXR | .......................................... | WX/TURB | WX+T | .......................................... | MAP | MAP | 2...................…....................1
(f)
Set the SYS switch to the L position.
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