1. Possible Causes
_______________
- ADIRU-3 (1FP3)
- DMC-3 (1WT3)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 31-63-34-000-001 Removal of the DMC (1WT1,1WT2,1WT3)
AMM 31-63-34-400-001 Installation of the DMC (1WT1,1WT2,1WT3)
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
R 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)/DMC3 (1WT3):
R - 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:
- replace the DMC-3 (1WT3) (Ref. AMM TASK 31-63-34-000-001) and (Ref. AMM TASK 31-63-34-400-001).
(a) If the fault continues:
- do a check and repair the wiring between the ADIRU3 (1FP3) and the DMC3 (1WT3). (Ref. ASM 34-14/01)
B. Do the test given in para. 3.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 301-399, 401-499, ∞∞34-14-00∞∞∞∞∞∞∞∞∞∞Page B228
Aug 01/05 CES
STANDBY DATA : ALTITUDE AND AIRSPEED - FAULT ISOLATION PROCEDURES
_________________________________________________________________
TASK 34-21-00-810-801
Incorrect Readout of the Standby Altimeter
1. Possible Causes
_______________
- ALTM-STANDBY (3FN)
- LGCIU-1 (5GA1)
- RELAY-L/G POSITION, SYS1 (11GB)
- wiring of the relay (11GB)
- C/B-NAV/STBY/ALTM (16FN)
- wiring from the LGCIU1 (5GA1) to the SYS1 L/G position relay (11GB)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 32-31-71-000-001 Removal of the LGCIU (5GA1, 5GA2)
AMM 32-31-71-400-001 Installation of the LGCIU (5GA1, 5GA2)
AMM 34-21-22-000-001 Removal of the Standby Altimeter (3FN)
AMM 34-21-22-400-001 Installation of the Standby Altimeter (3FN)
ASM 32-62/01
ASM 34-21/01
3. Fault Confirmation
__________________
A. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-212, 214-220,
49VU NAV/STBY/ALTM 16FN F14
**ON A/C ALL
B. Test
(1) Not applicable, the fault is evident.
「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 ∞∞34-21-00∞∞∞∞∞∞∞∞∞∞Page 201
May 01/05 CES 4. Fault Isolation
_______________
A. If the movement of the pointer is not correct:
- disconnect connector A of the standby altimeter (3FN)
- connect a voltmeter between pins A and D of the standby altimeter connector and make sure that the voltmeter readout is equal to O V.
(1) If the voltmeter readout is equal to O V:
- disconnect then connect connector AB of the LGCIU1 (5GA1) and make sure that the voltmeter readout changes from O V to 28VDC and then to O V.
(a) If the voltmeter readout is correct:
- replace the ALTM-STANDBY (3FN) (Ref. AMM TASK 34-21-22-000-001) and (Ref. AMM TASK 34-21-22-400-001). 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 导航 NAVIGATION 2(91)
