- install the ADIRU 2. . If there is continuity:
- replace the C/B-ADIRS/ADIRU/2/28VDC (6FP2)
- install the ADIRU 2.
B. Do the test given in Para. 3.
Loss of the DC Supply of the ADIRU3
1. Possible Causes
_______________
- ADIRU-3 (1FP3)
- wiring between ADIRU3 pin AC/8 and the first terminal block
- RELAY-ADIRS 3 PWR SHEDDING (14FP)
- wiring of the ADIRS 3 PWR SHEDDING relay (14FP)
- wiring from the relay (14FP) pins A2, X1 to the circuit breaker (6FP3)
- C/B-ADIRS/ADIRU/3/28VDC (6FP3)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 34-12-34-000-001 Removal of the ADIRU (1FP1, 1FP2, 1FP3)
AMM 34-12-34-400-001 Installation of the ADIRU (1FP1, 1FP2, 1FP3)
AMM 34-14-00-740-001 Interface Test of the IR
ASM 34-11/01
3. Fault Confirmation
__________________
A. Test Do the Interface test of the IR (system 3) (Ref. AMM TASK 34-14-00-740-001).
4. Fault Isolation
_______________
A. If the test gives the maintenance message ADIRU3 (1FP3) DC SUPPLY:
- remove the ADIRU-3 (1FP3) (Ref. AMM TASK 34-12-34-000-001)
- do a check for a ground signal at pin AC/8 of the rack connector.
(1) If there is no ground signal:
- repair the wiring between ADIRU3 pin AC/8 and the first terminal block (Ref. ASM 34-11/01)
- install the ADIRU3 (Ref. AMM TASK 34-12-34-400-001).
(2) If there is a ground signal:
- do a check for 28VDC at pin AC/7 of the rack connector.
(a) If there is 28VDC:
- install a new ADIRU3.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : ALL ∞∞34-14-00∞∞∞∞∞∞∞∞∞∞Page A235
May 01/05 CES (b) If there is no 28VDC:
- replace the RELAY-ADIRS 3 PWR SHEDDING (14FP).
1 If the fault stops:
_ - install the ADIRU3.
2 If the fault continues:
_
- do a check and repair the wiring of the ADIRS 3 PWR SHEDDING relay (14FP) . pin X2 to the ground point . pin A1 to the ADIRU 3 (1FP3) pin AC/7 (Ref. ASM 34-11/01).
a If the fault stops:
_ - install the ADIRU 3.
b If the fault continues:
_
- do a check of the wiring from the relay (14FP) pins A2, X1 to the circuit breaker (6FP3) (Ref. ASM 34-11/01).
. If there is no continuity:
- repair the above wiring
- install the ADIRU 3. . If there is continuity:
- replace the C/B-ADIRS/ADIRU/3/28VDC (6FP3)
- install the ADIRU 3.
B. Do the test given in Para. 3.
R **ON A/C 001-049, 101-105, 151-199, 201-203,
TASK 34-14-00-810-902
Loss of the IR1 BUS1 Output
1. Possible Causes
_______________
- ADIRU-1 (1FP1)
- wiring of the INERTIAL REFERENCE OUTPUT BUS 1 bus from the ADIRU 1 (1FP1) to the first terminal block
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 34-12-34-000-001 Removal of the ADIRU (1FP1, 1FP2, 1FP3)
AMM 34-12-34-400-001 Installation of the ADIRU (1FP1, 1FP2, 1FP3)
AMM 34-14-00-740-001 Interface Test of the IR
ASM 34-14/01
3. Fault Confirmation
__________________
A. Test Do the Interface test of the IR (system 1) (Ref. AMM TASK 34-14-00-740-001).
4. Fault Isolation
_______________
A. If the test gives the maintenance message ADIRU1 (1FP1) IR BUS1:
- replace the ADIRU-1 (1FP1) (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
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