- do a check for 115VAC at pin AC/1 of the rack connector.
(a) If there is 115VAC:
- install a new ADIRU3.
(b) If there is no 115VAC:
- do a check and repair the wiring between the ADIRU3 and the circuit breaker (4FP3)
- install the ADIRU3.
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 ∞∞34-14-00∞∞∞∞∞∞∞∞∞∞Page A231
May 01/05R CES
Loss of the DC Supply of the ADIRU1
1. Possible Causes
_______________
- ADIRU-1 (1FP1)
- aircraft wiring
- wiring between the ADIRU1 and the circuit breaker (6FP1)
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 1) (Ref. AMM TASK 34-14-00-740-001).
4. Fault Isolation
_______________
A. If the test gives the maintenance message ADIRU1 (1FP1) DC SUPPLY:
- remove the ADIRU-1 (1FP1) (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 aircraft wiring between ADIRU1 pin AC/8 and the first terminal block (Ref. ASM 34-11/01)
- install the ADIRU1 (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 ADIRU1.
(b) If there is no 28VDC:
- do a check and repair the wiring between the ADIRU1 and the circuit breaker (6FP1)
- install the ADIRU1.
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 ∞∞34-14-00∞∞∞∞∞∞∞∞∞∞Page A232
May 01/05R CES
Loss of the DC Supply of the ADIRU2
1. Possible Causes
_______________
- ADIRU-2 (1FP2)
- wiring between ADIRU2 pin AC/8 and the first terminal block
- RELAY-ADIRS 2 PWR SHEDDING (17FP)
- wiring of the ADIRS 2 PWR SHEDDING relay (17FP)
- wiring from the relay (17FP) pins A2, X1 to the circuit breaker (6FP2)
- C/B-ADIRS/ADIRU/2/28VDC (6FP2)
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 2) (Ref. AMM TASK 34-14-00-740-001).
4. Fault Isolation
_______________
A. If the test gives the maintenance message ADIRU2 (1FP2) DC SUPPLY:
- remove the ADIRU-2 (1FP2) (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 ADIRU2 pin AC/8 and the first terminal block (Ref. ASM 34-11/01)
- install the ADIRU2 (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 ADIRU2.
「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 A233
May 01/05 CES (b) If there is no 28VDC:
- replace the RELAY-ADIRS 2 PWR SHEDDING (17FP).
1 If the fault stops:
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本文链接地址：A320 Trouble Shooting Manual 排故手册 导航 NAVIGATION 2(64)
