2) Do a check for a 28v dc from pin 7 to pin 8 (ground) of the connector D3687C.
(c) For the Right ADIRU: 1) Remove the safety tag and close this circuit breaker:
F/O Electrical System Panel, P6-1
Row Col Number Name
C 17 C01010 ADIRU RIGHT DC
2) Do a check for a 28v dc from pin 7 to pin 8 (ground) of the connector D3693C.
(d) If there is a 28v dc at pin 7 of connector D3687C and D3693C, then do these steps: 1) Do this check of the wiring between the ADIRUs and the IFSAU: a) Remove the IFSAU. To remove it, do this task: Integrated Flight System Accessory Unit (IFSAU) Removal, AMM TASK 22-11-37-000-801
b) For the left ADIRU, do a wiring check between these pins of connector D3687C and D3687B for the ADIRU and connector D235A for the IFSAU:
D3687C D235A
pin7 -----------------pin47
D3687B D235A
pinE11 ----------------pin60
c) For the right ADIRU, do a wiring check between these pins of connector D3693C and D3693B for the ADIRU and connector D235A and D235B for the IFSAU.
D3693C D235A
pin7 -----------------pin111 pin7 -----------------pin112
D3693B D235B
pinE11 ----------------pin60
d) If you find a problem with the wiring, then do these steps:
<1> Repair the wiring.
<2> Re-install the ADIRUs. To install it, do this task: Air Data Inertial Reference Unit Installation, AMM TASK 34-21-01-400-801.
<3> Re-install the IFSAU . To install it, do this task: Integrated Flight System Accessory Unit Installation, AMM TASK 22-11-37-400-801.
<4> Do a Repair Confirmation below.
<5> If the Repair Confirmation is not satisfactory, then continue. e) If you do not find a problem with the wiring, then do these steps:
<1> Install a new IFSAU. To install it, do this task: Integrated Flight System Accessory Unit (IFSAU) Removal, AMM TASK 22-11-37-000-801Integrated Flight System Accessory Unit Installation, AMM TASK 22-11-37-400-801
<2> Do a Repair Confirmation below.
<3> If the Repair Confirmation is not satisfactory, then continue.
<a> Install a new ADIRU. To install it, do this task: Air Data Inertial Reference Unit Removal, AMM TASK 34-21-01-000-801Air Data Inertial Reference Unit Installation, AMM TASK 34-21-01-400-801
EFFECTIVITY SIL ALL 34-21 TASK 842
D633A103-SIL BOEING PROPRIETARY -Copyright # Unpublished Work -See title page for details Page 280 Oct 15/2010
<b> Do a Repair Confirmation below.
<c> If the Repair Confirmation is not satisfactory, then continue.
(e) If there is no 28v dc at pin 7 of connector D3687c and D3693c, then continue.
(2) Do this check of the wiring between the ADIRUs and the ADIRU 28v DC circuit breakers.
(a) For the left ADIRU, do a wiring check between these pins of connector D3687C for the ADIRU and connector D41803P for the ADIRU 28v DC cuircuit breakers.
D3687C D41803P
pin7 -------------------pin22
(b) For the right ADIRU, do a wiring check between these pins of connector D3693C for the ADIRU and connector D46061P for the ADIRU 28v DC circuit breakers.
D3693C D46061P
pin7 -------------------pin23
(c) If you find a problem with the wiring, then do these steps. 1) Repair the wiring. 2) Re-install the ADIRUs. To install it, do this task: Air Data Inertial Reference Unit
Installation, AMM TASK 34-21-01-400-801 3) Do a Repair Confirmation below. 4) If the Repair Confirmation is not satisfactory, then continue.
(d) If you did not find a problem with the wiring, then do these steps. 1) Re-install the ADIRUs. To install it, do this task: Air Data Inertial Reference Unit
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