(15)
Observe indicator for two bright solid bands between 70 and 100 NM, which indicates one test video target. Observe dark band (iso-contour) between these bright bands.
(16)
Press the AZIM MKS pushbutton and check that the azimuth lines appear at 30-degree intervals. Press again, and check that azimuth lines disappear.
(17)
A VSWR fault will cause a periodic break-up in the indicator display.
(18)
At control panel, select system 2 by placing system (R/T) transfer switch to 2.
(19)
Repeat range checks and test pattern checks for system 2.
(20)
Perform pitch, roll, and azimuth stabilization self-tests.
(a)
At R/T number 1, press LAMP TEST switch and observe ANT and R/T lamps illuminate.
(b)
At R/T number 1, press ROLL STABILIZATION TEST SWITCH and hold.
NOTE: When a stabilization test button is initially pressed
____ and held for the test, the FAULT lamps may light steadily, intermittently or not at all. The pushbuttons should not be held depressed for more than 45 seconds; significant errors are introduced in the stabilization system at this time, and the annunciators on the R/T front panel may trip and indicate a fault condition.
(c)
Observe that R/T and ANT fault lamps are extinguished after 10 seconds.
(d)
Release ROLL STABILIZATION TEST SWITCH.
(e)
Repeat steps (b) thru (d) for AZ.
(f)
Repeat steps (b) thru (d) for ELEV.
(g)
At the control panel, select system 2.
(h)
Press lamp test switch on R/T number 2 and observe ANT and R/T lamps illuminate, then repeat steps (b) thru (f) for R/T number 2.
EFFECTIVITY
AF 101-120, 123-156, 158,
159, 172-182, 185-199; SN 301-350; IB 405; GN ALL; CONFIG MD ALL; VM ALL 04 Page 503
Sep 25/94
34-43-00
BRIGHT BAND
DUE TO VIDEO
TEST SIGNAL
DARK BAND
LIGHTLY
SPOTTED
WITH NOISE
50-MILE
RANGE MARK
25-MILE
RANGE MARK
100-MILE RANGE MARK IN BRIGHT BAND
IS0-CONTOUR TEST BAND (NORMALLY DARK)
90 MILES
75-MILE RANGE MARK BARELY VISIBLE IN BRIGHT BAND
NOISE SIGNAL MAXIMUM AT APPROX 60 MILES DECREASING EXPONENTIALLY TO A MINIMUM OF APPROX 30 MILES
Weather Radar System Test Pattern, Test Mode
Figure 501
EFFECTIVITY
AF 101-120,123-156,158,159, CONFIG 2 172-182,185-199; SN 301-350;799 Page 504 IB 405; GN ALL; MD ALL; VM ALL SEP 25/94
34-43-00
808860
SEE A WAVEGUIDE SWITCH AND DUMMY LOAD (IF INSTALLED) (2 PLACES) RECEIVER TRANSMITTERS RADAR WEATHER ANTENNA SEE A (2 PLACES) TRANSMITTER RECEIVER/
REFLECTOMETER (IF INSTALLED) WAVEGUIDE ANTENNA RADAR WEATHER
1PASSENGER SWITCH WAVEGUIDE WAVEGUIDE
FREIGHTERS 2
FLAT PLATE
RADIATOR
ANTENNA
SEE C
SEE B
1
AF 101-116,172-173,181,182,191-199;
SN 301-350; IB 405; GN ALL; MD ALL; VM ALL
2 AF 151-159
Weather Radar System Component Location Figure 502 (Sheet 1)
EFFECTIVITY
AF 101-120,123-156,158,159, CONFIG 2 172-182,185-199; SN 301-350;799 Page 505
34-43-00IB 405; GN ALL; MD ALL; VM ALL Sep 25/94
RECEIVER/TRANSMITTER
(PANEL FACE VEIW)
INDICATOR
Weather Radar System Component Location
Figure 502 (Sheet 2)
EFFECTIVITY AF 101-120,123-156,158,159,
CONFIG 2172-182,185-199; SN 301-350;799 Page 506 IB 405; GN ALL; MD ALL; VM ALL Sep 25/94
34-43-00
(21) If not further testing is required perform Weather Radar Shutdown Procedure.
3. System Test - Weather Radar System__________________________________
A. Equipment and Materials
(1)
INS Platform Tilt Table - 2TSJ60B00002 and INS Tilt Table Adapter 3TSJ60B00002 and test cables, or equivalent
(2)
Personnel warning lights
(3)
Weather Radar R/T Removal Dolly - ME65B40706
B. Referenced Procedures
(1)
21-58-00, Equipment Cooling - Adjustment/Test
(2)
24-22-00, Manual Control - Maintenance Practices (Apply Power)
(3)
34-41-00, Inertial Navigation System - Adjustment/Test
(4)
34-43-00, Weather Radar System - Adjustment/Test (Operating Test)
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本文链接地址：747飞机维护手册AMM CHAPTER 34 - NAVIGATION 第34章导航3(133)
