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- do a check for 115VAC on the EVMU (Ref. ASM 77-32/02).
(a) If there is 115VAC:
- replace the EVMU (2EV), (Ref. AMM TASK 77-32-34-000-042) and (Ref. AMM TASK 77-32-34-400-042).
(b) If there is no 115VAC:
- do a check and repair the aircraft wiring between the breaker 1EV to the EVMU (2EV) (Ref. ASM 77-32/02).
1 If the fault continues:
_
- replace the C/B-ENGINE/ENG1 AND 2/EVMU (1EV)
C. Do the check given in Para. 3.A.
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TASK 77-30-00-810-802
Loss of N1 or N2 Vibration Indication on One Engine
1. Possible Causes
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- EVMU (2EV)
2. Job Set-up Information
______________________
A. Referenced Information
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REFERENCE DESIGNATION
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AMM 77-32-34-000-042 Removal of the Engine Vibration Monitoring Unit (EVMU) AMM 77-32-34-400-042 Installation of the Engine Vibration Monitoring Unit (EVMU) R AMM 77-32-34-710-040 Operational Check of EVMU through CFDS
3. Fault Confirmation
__________________
A. Test Do the operational test of the Engine Vibration Monitoring Unit (EVMU) through the Centralized Fault Display System (CFDS) (Ref. AMM TASK 77-32-34-710-040).
4. Fault Isolation
_______________
A. If the test gives the maintenance message EVMU:
- replace the EVMU (2EV), (Ref. AMM TASK 77-32-34-000-042) and (Ref. AMM TASK 77-32-34-400-042).
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TASK 77-30-00-810-803
Loss of N1 and N2 Vibration Indications on the Two Engines
1. Possible Causes
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- EVMU (2EV)
- wiring from the circuit breaker 1EV to the pin AC/2 of the EVMU (2EV)
- C/B-ENGINE/ENG1 AND 2/EVMU (1EV)
2. Job Set-up Information
______________________
A. Referenced Information
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REFERENCE DESIGNATION
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AMM 31-60-00-860-001 EIS Start Procedure
AMM 31-60-00-860-002 EIS Stop Procedure
AMM 77-32-34-000-042 Removal of the Engine Vibration Monitoring Unit
(EVMU) AMM 77-32-34-400-042 Installation of the Engine Vibration Monitoring Unit (EVMU)
R AMM 77-32-34-710-040 Operational Check of EVMU through CFDS ASM 77-32/02 ASM 77-33/02
3. Fault Confirmation
__________________
A. Job Set-Up
(1) Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).
B. Test
(1) On the ECAM control panel:
- push the ENG key to get the ENGINE page on the lower ECAM display unit.
(2) On the ENGINE page, the N1 and N2 vibration level indications on the two engines show amber XX.
4. Fault Isolation
_______________
A. Table of the circuit breakers used in this procedure:
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本文链接地址：A320 Trouble Shooting Manual 排故手册 发动机指示(185)
