3. Fault Confirmation
__________________
A. Test
(1) Do the operational test of the engine fire and overheat detection from the Multipurpose Control and Display Unit (MCDU) (Ref. AMM TASK 26-12-00-710-002).
(a) If you cannot do the test:
- go to Para. 4.A.
(b) If you can do the test:
- no maintenance action is necessary.
4. Fault Isolation
_______________
A. Remove the engine 1 FDU (2WD1):
- make sure that there is no ground signal at the pin B/R of the engine 1 FDU (2WD1) on the wiring side (Ref. ASM 26-12/02).
(1) If there is no ground signal:
- replace the FDU-ENG1 (2WD1) (Ref. AMM TASK 26-12-34-000-001) and (Ref. AMM TASK 26-12-34-400-001).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 106-149, 155-199, 208-299, 301-399, ∞∞26-12-00∞∞∞∞∞∞∞∞∞∞Page 287
401-499, Aug 01/05 CES (2) If there is a ground signal:
- remove the CFDIU (1TW)
- make sure that there is no ground signal at the pin AA/12F of the CFDIU (1TW) on the wiring side (Ref. ASM 26-12/02).
(a) If there is no ground signal:
- replace the CFDIU (1TW) (Ref. AMM TASK 31-32-34-000-001) and (Ref. AMM TASK 31-32-34-400-001)
- install the engine 1 FDU (2WD1).
(b) If there is a ground signal:
- do a check and repair the wiring between the CFDIU (1TW) pin AA/12F and the engine 1 FDU (2WD1) pin B/R (Ref. ASM 26-12/02)
- install the CFDIU (1TW)
- install the engine 1 FDU (2WD1).
B. Do the test given in Para. 3.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 106-149, 155-199, 208-299, 301-399, ∞∞26-12-00∞∞∞∞∞∞∞∞∞∞Page 288
401-499, Aug 01/05 CES
Maintenance Test of the FDU 2 Not Possible
1. Possible Causes
_______________
- FDU-ENG2 (2WD2)
- CFDIU (1TW)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 26-12-00-710-002 Operational Test of the Engine Fire and Overheat Detection with the Centralized Fault Display System (CFDS)
AMM 26-12-34-000-001 Removal of the Engine Fire-Detection Unit (FDU) (2WD1,2WD2) AMM 26-12-34-400-001 Installation of the Engine Fire-Detection Unit (FDU)
(2WD1,2WD2)
AMM 31-32-34-000-001 Removal of the CFDIU (1TW)
AMM 31-32-34-400-001 Installation of the CFDIU (1TW)
ASM 26-12/02
3. Fault Confirmation
__________________
A. Test
(1) Do the operational test of the engine fire and overheat detection from the Multipurpose Control and Display Unit (MCDU) (Ref. AMM TASK 26-12-00-710-002).
(a) If you cannot do the test:
- go to Para. 4.A.
(b) If you can do the test:
- no maintenance action is necessary.
4. Fault Isolation
_______________
A. Remove the engine 2 FDU (2WD2):
- make sure that there is no ground signal at the pin B/R of the engine 2 FDU (2WD2) on the wiring side (Ref. ASM 26-12/02).
(1) If there is no ground signal:
- replace the FDU-ENG2 (2WD2) (Ref. AMM TASK 26-12-34-000-001) and (Ref. AMM TASK 26-12-34-400-001).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 106-149, 155-199, 208-299, 301-399, ∞∞26-12-00∞∞∞∞∞∞∞∞∞∞Page 289
401-499, Aug 01/05 CES (2) If there is a ground signal:
- remove the CFDIU (1TW)
- make sure that there is no ground signal at the pin AB/12E of the CFDIU (1TW) on the wiring side (Ref. ASM 26-12/02).
(a) If there is no ground signal:
- replace the CFDIU (1TW) (Ref. AMM TASK 31-32-34-000-001) and (Ref. AMM TASK 31-32-34-400-001)
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 FIRE PROTECTION 防火(58)
