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 captain’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.
(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 ---------------------------
812. WXR DSPY Message Shows on CDS -Captain’s -Fault Isolation
A. Description
(1) The applicable captain’s display unit is overheated.
EFFECTIVITY
34-43 TASKS 811-812
SIL ALL
Page 244 D633A103-SIL Feb 15/2011
B. Possible Causes
(1)
Applicable captain’s display unit (N187, N188, N189).
(2)
Display electronic unit 1, M1808.
C. Circuit Breakers
(1) These are the primary circuit breakers related to the fault:
CAPT Electrical System Panel, P18-2
Row Col Number Name
D 1 C01369 DISPLAY CAPT EFIS CONT PANEL
D 2 C01372 DISPLAY CTR UPR
D 3 C01365 DISPLAY CAPT INBD
D 5 C01359 DISPLAY DEU 1 PRI
F/O Electrical System Panel, P6-1
Row Col Number Name
D 10 C01361 DISPLAY DEU 1 HOLDUP
D. Related Data
(1) (SSM 34-41-11).
E. Initial Evaluation
(1)
Make sure the WXR switch on the captain’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 DSPY message does not show on the captain’s display, then there was an intermittent fault.
(b)
If the WXR DSPY message shows on the captain’s display, then do the Fault Isolation Procedure below.
F. Fault Isolation Procedure
(1) For
DEU-1,
do
this
task:
CDS
BITE
Procedure,
31-62
TASK
801.
Look for any of the maintenance messages related to the LRUs that follow:
(a)
Applicable display unit
(b)
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 DSPY message does not show on the captain’s display, then you corrected the fault.
-------------------------END OF TASK ---------------------------
813. WXR DSPY Message Shows on CDS -First Officer’s -Fault Isolation
A. Description
(1) The applicable first officer’s display unit is overheated.
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