3. Fault Confirmation
__________________
A. Table of the circuit breakers used in this procedure:
-------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
-------------------------------------------------------------------------------
**ON A/C 001-049, 051-061, 101-105, 201-203,
121VU ADIRS/ADIRU/3/26VAC AND AOA 5FP3 N08 R **ON A/C 062-099, 106-149, 151-199, 204-299, 301-399, 401-499,
121VU ADIRS/ADIRU/3/26VAC AND AOA 5FP3 N07 **ON A/C ALL
B. Test
(1) Do the Interface test of the ADR (system 3) (Ref. AMM TASK 34-13-00-740-002).
(a) If you cannot close the circuit breaker (5FP3), go to Para. 4.A.(2).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞34-11-00∞∞∞∞∞∞∞∞∞∞Page 207
Aug 01/05 CES
4. Fault Isolation
_______________
R **ON A/C 001-049, 101-105, 151-199, 201-203,
A. If the test gives the maintenance message AOA SENSOR3 (3FP3) SUPPLY/ ADIRU3 (1FP3):
(1) If the circuit breaker (5FP3) is closed:
- do a check for 26VAC at pins AC/10, 6 of the ADIRU 3 (1FP3).
(a) If there is 26VAC:
- replace the ADIRU-3 (1FP3) (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
(b) If there is no 26VAC:
- do a check for a ground signal at pins AC/4, 9 of the ADIRU 3 (1FP3).
1 If there is no ground signal:
_
- repair the wiring between ADIRU 3 pins AC/4, 9 and the ground terminal (Ref. ASM 34-11/01).
2 If there is a ground signal:
_
- do a check of the wiring between ADIRU 3 pins AC/10, 6 and the circuit breaker (5FP3) (Ref. ASM 34-11/01).
a If there is no continuity:
_ - repair the above wiring.
b If there is continuity:
_ - replace the C/B-ADIRS/ADIRU/3/26VAC AND AOA (5FP3).
(2) If the circuit breaker (5FP3) is open:
- close the circuit breaker.
(a) If the circuit breaker trips:
- replace the ADIRU-3 (1FP3) (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
1 If the fault continues:
_
- do a check for a short to ground at the wiring between ADIRU 3 pins AC/10, 6 and the circuit breaker (5FP3) (Ref. ASM 34-11/01).
a If there is a short to ground:
_ - repair the above wiring.
b If there is no short to ground:
_ - replace the C/B-ADIRS/ADIRU/3/26VAC AND AOA (5FP3).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞34-11-00∞∞∞∞∞∞∞∞∞∞Page 208
May 01/05 CES
R **ON A/C 051-099, 106-149, 204-299, 301-399, 401-499,
A. If the test gives the maintenance message AOA SENSOR3 (3FP3) SPLY:
(1) If the circuit breaker (5FP3) is closed:
- do a check for 26VAC at pins AC/10, 6 of the ADIRU 3 (1FP3).
(a) If there is 26VAC:
- replace the ADIRU-3 (1FP3) (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
(b) If there is no 26VAC:
- do a check for a ground signal at pins AC/4, 9 of the ADIRU 3 (1FP3).
1 If there is no ground signal:
_
- repair the wiring between ADIRU 3 pins AC/4, 9 and the ground terminal (Ref. ASM 34-11/01).
2 If there is a ground signal:
_
- do a check of the wiring between ADIRU 3 pins AC/10, 6 and the circuit breaker (5FP3) (Ref. ASM 34-11/01).
a If there is no continuity:
_
- repair the above wiring. b If there is continuity:
_ - replace the C/B-ADIRS/ADIRU/3/26VAC AND AOA (5FP3).
(2) If the circuit breaker (5FP3) is open:
- close the circuit breaker.
(a) If the circuit breaker trips:
- replace the ADIRU-3 (1FP3) (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
1 If the fault continues:
_
- do a check for a short to ground at the wiring between ADIRU 3 pins AC/10, 6 and the circuit breaker (5FP3) (Ref. ASM 34-11/01).
a If there is a short to ground:
_
- repair the above wiring. b If there is no short to ground:
_
- replace the C/B-ADIRS/ADIRU/3/26VAC AND AOA (5FP3).
**ON A/C ALL
B. Do the test given in Para. 3.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞34-11-00∞∞∞∞∞∞∞∞∞∞Page 209
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