(2)
Weather radar receiver/transmitter, M101.
SIL 014, 015, 020
(3) Left (Right) Weather radar receiver/transmitter, M101 (M460).
SIL ALL
(4)
Display electronic unit 2, M1809.
(5)
Wiring.
C. Circuit Breakers
(1) These are the primary circuit breakers related to the fault:
CAPT Electrical System Panel, P18-3
Row Col Number Name
SIL 014, 015, 020
C 7 C01678 WEATHER RADAR RT RIGHT
F/O Electrical System Panel, P6-1
Row Col Number Name
SIL ALL
D 9 C01362 DISPLAY DEU 2 HOLDUP
D 11 C01360 DISPLAY DEU 2 PRI
EFFECTIVITY
34-43 TASKS 808-809
SIL ALL
Page 236 D633A103-SIL Feb 15/2011
Row Col Number Name
D 13 C00120 WEATHER RADAR RT
E 13 C01370 DISPLAY F/O EFIS CONT PANEL
D. Related Data
(1) (SSM 34-41-11).
E. Initial Evaluation
(1)
Make sure the WXR switch on the first officer’s EFIS control panel is selected.
(2)
Make sure the CONTROL PANEL switch on the instrument switching module is set to NORMAL.
(a)
If the WXR RANGE DISAGREE message does not show on the first officer’s display, then there was an intermittent fault.
(b)
If the WXR RANGE DISAGREE message shows on the first officer’s display, then do the Fault Isolation Procedure below.
F. Fault Isolation Procedure
(1) For
DEU-2,
do
this
task:
CDS
BITE
Procedure,
31-62
TASK
801.
Look for any of the maintenance messages related to the LRUs that follow:
(a)
EFIS control panel
(b)
Weather radar
(c)
Display electronic unit
1) If any of the above maintenance messages show, then go to the FIM task for that message.
2) If the WXR RANGE DISAGREE message does not show on the first officer’s display, then you corrected the fault.
3) If the WXR RANGE DISAGREE message shows on the first officer’s display, then continue.
(2) Do this check of the wiring between the weather radar receiver/transmitter and the first officer’s DEU-2:
(a)
Remove the weather radar receiver/transmitter, M101. 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 weather radar receiver/transmitter connector D189B, and the first officer’s DEU-2 connector D3975F (WDM 34-41-11).
D3975B D189B
pinC7 ------------------pinJ3 pinB7 ------------------pinJ4
(d) If you find a problem with the wiring, then do these steps: 1) Repair the wiring. 2) 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. 3) Re-install the first officer’s DEU-2, M1809. To install it, do this task: AMM TASK 31-62-21-400-801.
EFFECTIVITY SIL ALL 34-43 TASK 809
D633A103-SIL BOEING PROPRIETARY -Copyright # Unpublished Work -See title page for details Page 237 Feb 15/2011
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