Loss of Communication with the Data Link through the MCDU 2
1. Possible Causes
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- MCDU-2 (3CA2)
- wiring of the ACARS (BUS 2) bus from the MCDU 2 (3CA2) to the first
terminal block
- wiring of the ATSU-1 RECEIVER bus from the MCDU 2 (3CA2) to the first terminal block
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 22-82-12-000-001 Removal of the MCDU (3CA1,3CA2,3CA3)
AMM 22-82-12-400-002 Installation of the MCDU (3CA1,3CA2,3CA3)
AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
External Power AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power ASM 22-86/04
3. Fault Confirmation
__________________
A. Job Set-up
(1) Aircraft Maintenance Configuration
(a) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(b) Make sure that the ventilation of the electronics racks is in operation.
「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 ∞∞22-82-00∞∞∞∞∞∞∞∞∞∞Page 232
May 01/04R
CES B. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
-------------------------------------------------------------------------------
**ON A/C 001-049, 051-099, 101-105,
121VU COM NAV/ACARS/MU 2RB L06 **ON A/C ALL
121VU AUTO FLT/MCDU/2 11CA2 N20 R **ON A/C 106-149, 151-199, 201-299, 301-399, 401-499,
121VU ATSU 1 3TX1 L16
121VU ATSU 1/SWTG 5TX1 L15
**ON A/C 001-049, 051-099, 101-105,
C. Test
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the center pedestal, on the On the center pedestal, on the MCDU 2: MCDU 2:
- push the MCDU MENU mode key. The MCDU MENU page comes into view.
- push the line key adjacent to The ACARS MENU page comes into view. the ACARS indication.
R **ON A/C 106-149, 151-199, 201-299, 301-399, 401-499,
C. Test
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the center pedestal, on the On the center pedestal, on the MCDU 2: MCDU 2:
- push the MCDU MENU mode key. The MCDU MENU page comes into view.
- push the line key adjacent to The ATSU DATALINK page comes into view. the ATSU indication.
**ON A/C ALL
4. Fault Isolation
_______________
**ON A/C 001-049, 051-099, 101-105,
A. If the ACARS MENU page does not come into view:
- replace the MCDU-2 (3CA2) (Ref. AMM TASK 22-82-12-000-001) and (Ref. AMM TASK 22-82-12-400-002).
(1) If the fault continues:
- do a check and repair the wiring of the ACARS (BUS 2) bus from the MCDU 2 (3CA2) to the first terminal block (Ref. ASM 22-86/04).
R **ON A/C 106-149, 151-199, 201-299, 301-399, 401-499,
A. If the ATSU DATALINK page does not come into view:
- replace the MCDU-2 (3CA2) (Ref. AMM TASK 22-82-12-000-001) and (Ref. AMM TASK 22-82-12-400-002).
(1) If the fault continues:
- do a check and repair the wiring of the ATSU-1 RECEIVER bus from the MCDU 2 (3CA2) to the first terminal block (Ref. ASM 22-86/04).
**ON A/C ALL
B. Do the test given in Para. 3.C.
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本文链接地址：A320 Trouble Shooting Manual 排故手册 AUTO FLIGHT 自动飞行2(57)
