3. Fault Confirmation
__________________
 A. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
 -------------------------------------------------------------------------------
121VU COM NAV/TCAS 4SG K10
 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
 B. Test
 (1) Do the EIS input test (Ref. AMM TASK 31-60-00-740-002). R **ON A/C 106-149, 303-399, 401-499,
 B. Test
 (1) Do the Ground Scanning Test of the DMC (Ref. AMM TASK 31-60-00-740-007).

 4. Fault Isolation
_______________
 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
 A. If the test gives the maintenance message DMC1 : NO TCAS DATA:
 - replace the CMPTR-TCAS (1SG) (Ref. AMM TASK 34-43-34-000-001) and (Ref. AMM TASK 34-43-34-400-001).
 (1) If the fault continues:
 - do a check and repair the wiring of the RA/TA DISPLAY 1 bus from the TCAS computer (1SG) to the first terminal block (Ref. ASM 34-43/01).
R **ON A/C 106-149, 303-399, 401-499,
 A. If the test gives the maintenance message DMC1 : TCAS(1SG)/DMC1(1WT1)
 - replace the CMPTR-TCAS (1SG) (Ref. AMM TASK 34-43-34-000-001) and (Ref. AMM TASK 34-43-34-400-001).
 (1) If the fault continues:
 - do a check and repair the wiring of the RA/TA DISPLAY 1 bus from the TCAS computer (1SG) to the first terminal block (Ref. ASM 34-43/01).
 **ON A/C ALL
 B. Do the test given in Para. 3.

 TASK 34-43-00-810-804
 Loss of the RA/TA DISPLAY 1 Bus Identified by the EIS3

 1. Possible Causes
_______________
 - CMPTR-TCAS (1SG)

 - wiring of the RA/TA DISPLAY 1 bus from the TCAS computer (1SG) to the first terminal block

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 31-60-00-740-002 EIS Input Test
 AMM 31-60-00-740-007 GROUND SCANNING Test of the DMC
 AMM 34-43-34-000-001 Removal of the TCAS Computer (1SG)
 AMM 34-43-34-400-001 Installation of the TCAS Computer (1SG)
 ASM 34-43/01

 3. Fault Confirmation
__________________
 A. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
 -------------------------------------------------------------------------------
121VU COM NAV/TCAS 4SG K10
 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
 B. Test
 (1) Do the EIS input test (Ref. AMM TASK 31-60-00-740-002). R **ON A/C 106-149, 303-399, 401-499,
 B. Test
 (1) Do the Ground Scanning Test of the DMC (Ref. AMM TASK 31-60-00-740-007).

 4. Fault Isolation
_______________
 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
 A. If the test gives the maintenance message DMC3 : NO TCAS DATA :
 - replace the CMPTR-TCAS (1SG) (Ref. AMM TASK 34-43-34-000-001) and (Ref. AMM TASK 34-43-34-400-001).
 (1) If the fault continues:
 - do a check and repair the wiring of the RA/TA DISPLAY 1 bus from the TCAS computer (1SG) to the first terminal block (Ref. ASM 34-43/01).
R **ON A/C 106-149, 303-399, 401-499,
 A. If the test gives the maintenance message DMC3 : TCAS(1SG)/DMC3(1WT3)
 - replace the CMPTR-TCAS (1SG) (Ref. AMM TASK 34-43-34-000-001) and (Ref. AMM TASK 34-43-34-400-001).
 (1) If the fault continues:
 - do a check and repair the wiring of the RA/TA DISPLAY 1 bus from the TCAS computer (1SG) to the first terminal block (Ref. ASM 34-43/01).
 **ON A/C ALL
 B. Do the test given in Para. 3.

 TASK 34-43-00-810-805
 Loss of the RA/TA DISPLAY 2 Bus Identified by the ECAM2

 1. Possible Causes
_______________
 - CMPTR-TCAS (1SG)

 - wiring of the RA/TA DISPLAY 2 bus from the TCAS computer (1SG) to the first terminal block

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 31-50-00-710-001 Ground Scanning of the Central Warning System
　
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