Loss of the Secondary GPS Data on one ADIRU
1. Possible Causes
_______________
- GPSSU-2 (1SN2)
- GPSSU-1 (1SN1)
- wiring from the GPSSU2 to the ADIRU1
- wiring from the GPSSU1 to the ADIRU2
- wiring from the GPSSU2 to the ADIRU3
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 34-58-31-000-001 Removal of the GPSSU (1SN1,1SN2)
AMM 34-58-31-400-001 Installation of the GPSSU (1SN1,1SN2)
ASM 34-58/01
3. Fault Confirmation
__________________
A. Not applicable, you cannot confirm this fault on the ground.
4. Fault Isolation
_______________
A. If the STS - GNSSU 2 FLT message is shown on the ADIRS CDU (2FP) on the overhead panel 20VU:
(1) When the SYS OFF/1/3/2 selector switch is in the 1 position on the ADIRS CDU (20VU):
- do a check and repair the wiring from the GPSSU2 to the ADIRU1: pins A/9, 22 to pins AB/1C, 2C (Ref. ASM 34-58/01).
(a) After the subsequent flight, if the fault continues:
- replace the GPSSU-2 (1SN2) (Ref. AMM TASK 34-58-31-000-001) and (Ref. AMM TASK 34-58-31-400-001).
(2) When the SYS OFF/1/3/2 selector switch is in the 2 position on the ADIRS CDU (20VU):
- do a check and repair the wiring from the GPSSU1 to the ADIRU2: pins A/9, 22 to pins AB/1C, 2C (Ref. ASM 34-58/01).
(a) After the subsequent flight, if the fault continues:
- replace the GPSSU-1 (1SN1) (Ref. AMM TASK 34-58-31-000-001) and (Ref. AMM TASK 34-58-31-400-001).
「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 : 001-049, 101-105, 151-199, 201-203, ∞∞34-14-00∞∞∞∞∞∞∞∞∞∞Page B219
May 01/05 CES
(3) When the SYS OFF/1/3/2 selector switch is in the 3 position on the ADIRS CDU (20VU):
- do a check and repair the wiring from the GPSSU2 to the ADIRU3: pins A/13, 14 to pins AB/1C, 2C (Ref. ASM 34-58/01).
(a) After the subsequent flight, if the fault continues:
- replace the GPSSU-2 (1SN2) (Ref. AMM TASK 34-58-31-000-001) and (Ref. AMM TASK 34-58-31-400-001).
TASK 34-14-00-810-974 Failure of the ADIRS CDU
1. Possible Causes
_______________
- CDU-ADIRS (2FP)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 34-12-12-000-001 Removal of the ADIRS CDU (2FP) AMM 34-12-12-400-001 Installation of the ADIRS CDU (2FP) AMM 34-14-00-740-001 Interface Test of the IR
3. Fault Confirmation
__________________
A. Test
(1) Do the interface test of the IR (system 1, 2 and 3) (Ref. AMM TASK 34-14-00-740-001).
4. Fault Isolation
_______________
A. If the BITE tests give the maintenance messages ADIRS CONTROL PANEL (2FP)/ADIRU1(1FP1), ADIRS CONTROL PANEL (2FP)/ADIRU2(1FP2), ADIRS CONTROL PANEL (2FP)/ADIRU3(1FP3) and if the STS - CDU FAULT message is shown on the ADIRS CDU (2FP) on the overhead panel 20VU:
- replace the CDU-ADIRS (2FP) (Ref. AMM TASK 34-12-12-000-001) and (Ref. AMM TASK 34-12-12-400-001)
B. Do the test given in para. 3.
R **ON A/C 301-399, 401-499,
TASK 34-14-00-810-975
Loss of the IR 1 Data Identified by the DMC 1
1. Possible Causes
_______________
- ADIRU-1 (1FP1)
- DMC-1 (1WT1)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 31-63-34-000-001
AMM 31-63-34-400-001
AMM 34-12-34-000-001
AMM 34-12-34-400-001
AMM 34-14-00-740-001
ASM 34-14/01
3. Fault Confirmation
__________________
A. Test
Removal of the DMC (1WT1,1WT2,1WT3)Installation of the DMC (1WT1,1WT2,1WT3)Removal of the ADIRU (1FP1, 1FP2, 1FP3)Installation of the ADIRU (1FP1, 1FP2, 1FP3)Interface Test of the IR
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