(b)
If the test is satisfactory, then continue.
(3)
Do this check of the wiring between the applicable ADIRU and the ADM:
(a)
Remove the ADIRU. To remove it, do this task: Air Data Inertial Reference Unit Removal, AMM TASK 34-21-01-000-801.
(b)
Remove the ADMs. To remove them, do these tasks:
Pitot Air Data Module Removal, AMM TASK 34-21-04-000-801,
Static Air Data Module Removal, AMM TASK 34-21-04-000-802.
(c)
For the left ADIRU, do a wiring check between these pins of connector D3687A for the ADIRU and connector D3689 for the pitot ADM and D3691 for the static ADM:
D3687A D3689
D10 --------------------7
E10 --------------------8
D3687A D3691
D9 ---------------------7
E9 ---------------------8
(d) For the right ADIRU, do a wiring check between these pins of connector D3693A for the ADIRU and connector D3695 for the pitot ADM and D3697 for the static ADM:
D3687A D3689
D10 --------------------7
E10 --------------------8
EFFECTIVITY SIL ALL 34-21 TASK 839
D633A103-SIL BOEING PROPRIETARY -Copyright # Unpublished Work -See title page for details Page 273 Oct 15/2008
D3687A D3691
D9 ---------------------7 E9 ---------------------8
(e) If you find a problem with the wiring, then do these steps: 1) Repair the wiring. 2) Re-install the ADIRU. To install it, do this task: Air Data Inertial Reference Unit
Installation, AMM TASK 34-21-01-400-801.
3) Re-install the ADMs. To install them, do these tasks: Pitot Air Data Module Installation, AMM TASK 34-21-04-400-801, Static Air Data Module Installation, AMM TASK 34-21-04-400-802.
4) For
the
applicable
ADIRS,
do
this
task:
ADIRS
BITE
Procedure,
34-21
TASK
801.
5) If the maintenance message does not show on the CDU, then you corrected the fault.
(f) If you do not find a problem with the wiring, then do this step and continue:
1) Re-install the ADMs. To install them, do these tasks: Pitot Air Data Module Installation, AMM TASK 34-21-04-400-801, Static Air Data Module Installation, AMM TASK 34-21-04-400-802.
(4) Do this check of the wiring between the applicable ADIRU and the AOA sensors:
(a)
Remove the AOA sensor. To remove it, do this task: Angle of Attack Sensor Removal, AMM TASK 34-21-05-000-801.
(b)
For the left ADIRU, do a wiring check between these pins of connector D3687A for the ADIRU and connector D10015 for the left AOA sensor:
D3687A D10015
J7 ---------------------3 H7 ---------------------4 K7 ---------------------5
(c) For the right ADIRU, do a wiring check between these pins of connector D3693A for the ADIRU and connector D10017 for the right AOA sensor:
D3687A D10017
J7 ---------------------3 H7 ---------------------4 K7 ---------------------5
(d) If you find a problem with the wiring, then do these steps: 1) Repair the wiring. 2) Re-install the ADIRU. To install it, do this task: Air Data Inertial Reference Unit
Installation, AMM TASK 34-21-01-400-801. 3) Re-install the AOA sensor. To install it, do this task: Angle of Attack Sensor
Installation, AMM TASK 34-21-05-400-801. 4) For
the
applicable
ADIRS,
do
this
task:
ADIRS
BITE
Procedure,
34-21
TASK
801.
5) If the maintenance message does not show on the CDU, then you corrected the fault.
(e) If you do not find a problem with the wiring, then do this step and continue:
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