A. If the BITE test gives the maintenance message ATC CTL
PNL(3SH)/ATC2(1SH2) :
- replace the CTL UNIT-ATC/TCAS (3SH) (Ref. AMM TASK 34-52-12-000-001) and (Ref. AMM TASK 34-52-12-400-001).
(1) If the fault continues:
- replace the XPDR-ATC/MODE S, 2 (1SH2) (Ref. AMM TASK 34-52-33-000-001) and (Ref. AMM TASK 34-52-33-400-001).
(a) If the fault continues:
- do a check and repair the wiring of the CONTROL DATA bus from the ATC control unit (3SH) to the ATC/MODE S transponder 2 (1SH2) (Ref. ASM 34-52/01).
**ON A/C ALL
B. Do the test given in Para. 3.
TASK 34-52-00-810-813 Loss of the Altitude Reporting Function
1. Possible Causes
_______________
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
34-52-00-810-807 Loss of the ADIRU Input Data to the ATC/MODE S Transponder 1 34-52-00-810-808 Loss of the ADIRU Input Data to the ATC/MODE S
Transponder 2 AMM 34-52-00-720-004 Functional Test of the Altitude Reporting Function AMM 34-52-00-740-004 BITE Test of the ATC
3. Fault Confirmation
__________________
A. Test
(1) Do the functional test of the altitude reporting function (Ref. AMM TASK 34-52-00-720-004).
4. Fault Isolation
_______________
A. If the altitude information is not reported on the ATC ground test unit:
- do the BITE test of the ATC (Ref. AMM TASK 34-52-00-740-004).
(1) If the BITE test gives the maintenance message ATC1 : NO DATA FROM ADIRU:
- do this procedure: (Ref. TASK 34-52-00-810-807).
(2) If the BITE test gives the maintenance message ATC2 : NO DATA FROM ADIRU:
- do this procedure: (Ref. TASK 34-52-00-810-808).
TASK 34-52-00-810-815
ATC1 or ATC2 System Inoperative
1. Possible Causes
_______________
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 34-52-00-740-004 BITE Test of the ATC
3. Fault Confirmation
__________________
A. Test
(1) Not applicable, the fault is evident.
4. Fault Isolation
_______________
A. If the warning light on the ATC/TCAS control unit comes on:
- Pull the C/B (Panel 49VU for ATC1, Panel 121VU for ATC2) of the selected ATC on the ATC/TCAS control unit. If the warning light goes off, then the selected ATC is faulty.
- do the BITE test of the faulty ATC (Ref. AMM TASK 34-52-00-740-004).
(1) If the test gives a maintenance message: R - Do the trouble shooting procedure related to the maintenance R message. R Failure of the ATC/TCAS Control Unit
1. Possible Causes
_______________
- CTL UNIT-ATC/TCAS (3SH)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 34-52-00-710-003 Operational Test of the ATC
AMM 34-52-00-740-004 BITE Test of the ATC
AMM 34-52-12-000-001 Removal of the ATC/TCAS Control Unit (3SH)
AMM 34-52-12-400-001 Installation of the ATC/TCAS Control Unit (3SH)
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