Vibration Indications Fault A320
1. Possible Causes:
-EVMU (2EV)
-C/B-ENGINE/ENG1 AND 2/EVMU (1EV)
-aircraft wiring
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
| Ref. ASM 77-32-02 | |
| Ref. AMM 77-32-34-000-042 | Removal of the Engine Vibration Monitoring Unit (EVMU) |
| Ref. AMM 77-32-34-400-042 | Installation of the Engine Vibration Monitoring Unit (EVMU) |
| Ref. AMM 77-32-34-710-040 | Operational Check of EVMU through CFDS for Advisory Indication on ECAM |
3. Fault Confirmation
SUBTASK 77-00-00-710-173-A
A. Do the operational test of the Engine Vibration Monitoring Unit (EVMU) through the Centralized Fault Display System (CFDS) Ref. AMM 77-32-34-710-040.
4. Fault Isolation
SUBTASK 77-00-00-865-056-A
A. Table of the circuit breakers used in this procedure:
SUBTASK 77-00-00-810-136-B
B. If the fault symptom is identified by ENG VIB SYS FAULT message on the upper ECAM warning display unit:
-do a check of the circuit breaker 1EV status.
(1) If the circuit breaker is open:
-close the circuit breaker 1EV.
(2) If the circuit breaker is closed:
— do a check for 115VAC on the EVMU Ref. ASM 77-32-02.
(a) If there is 115VAC:
— replace the EVMU (2EV), Ref. AMM 77-32-34-000-042 and Ref. AMM 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)
SUBTASK 77-00-00-710-174-A
C. Do the check given in Para. 3.A.
