4)  Do this task: Weather Radar (WXR) System -Operational Test, AMM TASK 34-43-00-710-802-001 or Weather Radar (WXR) System -Operational Test, AMM TASK 34-43-00-710-803-002.
a) If the weather radar operational test passes, then you corrected the fault.
(e)  If you do not find a problem with the wiring, then continue.
1)  Re-install the weather radar receiver/transmitter, M101. To install it, do this task: Weather Radar Receiver/Transmitter Installation, AMM TASK 34-43-41-400-801.
2)  Re-install the first officier’s DEU-2, M1809. To install it, do this task: AMM TASK 31-62-21-400-801.
SIL 014, 015, 020
(3)  Do this check of the wiring between the Left (Right) weather radar receiver/transmitter and the first officer’s DEU-2:
(a)  
Remove the Left (Right) weather radar receiver/transmitter, M101 (M460). To remove it, do this task: Weather Radar Receiver/Transmitter Removal, AMM TASK 34-43-41-000-801.

(b)  
Remove the first officer’s DEU-2, M1809. To move it, do this task: AMM
TASK 31-62-21-000-801.

(c)  
Do a wiring check between the Left (Right) weather radar receiver/transmitter connector D189B (D673B), and the first officer’s DEU-2 connector D3975B (WDM 34-41-11).

D3975B D189B (D673B) (D3975B)
pinC7(C7) ---------------pinJ3(J3) pinB7(B7) ---------------pinJ4(J4)

(d)  
If you find a problem with the wiring, then do these steps: 1) Repair the wiring. 2) Re-install the Left (Right) weather radar receiver/transmitter, M101 (M460). To install it,

do this task: Weather Radar Receiver/Transmitter Installation, AMM TASK 34-43-41-400-801. 3) Re-install the first officer’s DEU-2, M1809. To install it, do this task: AMM TASK 31-62-21-400-801. 4) Do this task: Weather Radar (WXR) System -Operational Test, AMM TASK 34-43-00-710-802-001. a) If the weather radar operational test passes, then you corrected the fault.

(e)  
If you do not find a problem with the wiring, then continue.

1)  Re-install the Left (Right) weather radar receiver/transmitter, M101 (M460). To install it, do this task: Weather Radar Receiver/Transmitter Installation, AMM TASK 34-43-41-400-801.
2)  Re-install the first officier’s DEU-2, M1809. To install it, do this task: AMM TASK 31-62-21-400-801.
SIL ALL
(4) Replace the weather radar receiver/transmitter. To replace it, These are the tasks:
*
Weather Radar Receiver/Transmitter Removal, AMM TASK 34-43-41-000-801

*
Weather Radar Receiver/Transmitter Installation, AMM TASK 34-43-41-400-801

EFFECTIVITY SIL ALL  34-43 TASK 809 
D633A103-SIL BOEING PROPRIETARY -Copyright # Unpublished Work -See title page for details  Page 238 Feb 15/2011 

(a)  Do this task: Weather Radar (WXR) System -Operational Test, AMM TASK 34-43-00-710-802-001 or Weather Radar (WXR) System -Operational Test, AMM TASK 34-43-00-710-803-002.
1) If the tilt code does not show then you corrected the fault.
-------------------------END OF TASK ---------------------------
810. MAP/WXR RANGE DISAGREE Message Shows on CDS -Captain’s -Fault Isolation
A.  Description
(1)  The display electronic unit 1 (DEU-1) senses the range differences from the captain’s EFIS control panel, the weather radar receiver/transmitter (WXR) and the flight management computer (FMC).
B.  Possible Causes
(1)
Captain’s EFIS control panel, P7-1.

(2)  
Weather radar receiver/transmitter, M101.

SIL 014, 015, 020
(3)  Left (Right) Weather radar receiver/transmitter, M101 (M460).
SIL ALL
(4)
Flight management computer (FMC), M1175 (FMC 1) or M1632 (FMC 2) (if installed).

(5)
Display electronic unit 1, M1808.
　
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