Loss of the FCDC 2 Output Bus by the DMC 3
1. Possible Causes
_______________
- DMC-3 (1WT3)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
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REFERENCE DESIGNATION
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AMM 31-60-00-740-002 EIS Input Test
AMM 31-60-00-740-007 GROUND SCANNING Test of the DMC
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)
ASM 31-62/01
3. Fault Confirmation
__________________
A. Make sure that this(these) circuit breaker(s) is(are) closed:
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PANEL DESIGNATION IDENT. LOCATION
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121VU FLIGHT CONTROLS/FCDC2/SPLY 20CE2 Q20
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
B. Test
Do the EIS input test (Ref. AMM TASK 31-60-00-740-002).
R **ON A/C 401-499,
B. Test Do the Ground Scanning Test of the DMC (Ref. AMM TASK 31-60-00-740-007).
4. Fault Isolation
_______________
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
A. If the test gives the maintenance message DMC 3 : NO FCDC 2 DATA:
- replace the DMC-3 (1WT3) (Ref. AMM TASK 31-63-34-000-001) and (Ref. AMM TASK 31-63-34-400-001).
(1) If the fault continues:
- do a check and repair the wiring from the DMC 3 (1WT3) pins AA/15F, 15G to the first terminal block (Ref. ASM 31-62/01).
R **ON A/C 401-499,
A. If the test gives the maintenance message FCDC2(3CE2)/DMC3(1WT3):
- replace the DMC-3 (1WT3) (Ref. AMM TASK 31-63-34-000-001) and (Ref. AMM TASK 31-63-34-400-001).
(1) If the fault continues:
- do a check and repair the wiring from the DMC 3 (1WT3) pins AD/5A, 5B to the first terminal block (Ref. ASM 31-62/01).
**ON A/C ALL
B. Do the test given in Para. 3.B.
Loss of the input bus from the SDAC 1 to the DMC 1
1. Possible Causes
_______________
- DMC-1 (1WT1)
- wiring
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 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)
ASM 31-54/04
3. Fault Confirmation
__________________
A. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU SDAC/1/SPLY 3WV F04
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
B. Test Do the EIS input test (EIS 1) (Ref. AMM TASK 31-60-00-740-002).
R **ON A/C 401-499,
B. Test Do the Ground Scanning Test of the DMC (Ref. AMM TASK 31-60-00-740-007).
4. Fault Isolation
_______________
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
A. If the test gives the maintenance message:
DMC 1 : NO SDAC1 DATA
- replace the DMC-1 (1WT1), (Ref. AMM TASK 31-63-34-000-001) and (Ref. AMM TASK 31-63-34-400-001).
(1) If the fault continues:
- do a check and repair the wiring from the DMC 1 (1WT1) pins AA/10C, 10D to the first terminal block , (Ref. ASM 31-54/04).
R **ON A/C 401-499,
A. If the test gives the maintenance message:
SDAC1(1WV1)/DMC1(1WT1)
- replace the DMC-1 (1WT1), (Ref. AMM TASK 31-63-34-000-001) and (Ref. AMM TASK 31-63-34-400-001). 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 指示和记录系统 2(86)
