B. Test
(1) Do this test:
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the ECAM control panel: - push the ELEC key to get the ELEC page.
R R 4. Fault Isolation_______________ A. If the test confirms the fault:
On the lower ECAM display unit:
- the normal configuration comes intoview (the AC1 busbar is shown in green).
On the upper ECAM display unit:
- the ELEC AC BUS 1 FAULT warning comes into view.
- do a check of the status of the circuit breaker (17XN1).
(1) If the circuit breaker is closed: R - replace the RELAY-BUS 1XP CTL (15XC).
R (a) If the fault continues:
R - replace the SDAC-1 (1WV1) (Ref. AMM TASK 31-55-34-000-001) and
R (Ref. AMM TASK 31-55-34-400-001).
R 1_ If the fault continues:
R - replace the SDAC-2 (1WV2) (Ref. AMM TASK 31-55-34-000-001)
R and (Ref. AMM TASK 31-55-34-400-001).
R a_ If the fault continues:R
- do a check of the wiring between: . the pins A/5D of the SDAC 1 and SDAC 2 and the pin A/B2 of the relay (15XC) . the pin A/B3 of the relay (15XC) and the ground (Ref. ASM 24-25/01).
R * If there is no continuity:
R
R * - repair the above wiring.
R * If there is continuity:
R
R * - do a check and repair the wiring between:
R * . the pin A/X1 of the relay (15XC) and the circuit
R breaker (17XN1)
R * . the pin A/X2 of the relay (15XC) and the ground (Ref.
ASM 24-25/01).
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(2) If the circuit breaker is open: - close it.
(a) If the circuit breaker trips: - replace the RELAY-BUS 1XP CTL (15XC).
R R 1_ If the fault continues: - replace the RELAY-BUS 1XP CTL (20XN1).
R R 2_ If the fault continues: - do a check for a short to ground at the wiring between the circuit breaker (17XN1) and respectively: . the pin A/X1 of the bus 1XP control relay (15XC) . the pin A/X1 of the bus 1XP control relay (20XN1) (Ref. ASM 24-25/01) and (Ref. ASM 24-51/02).
a_ If the wiring is not correct: - repair it.
b_ If the wiring is correct: - replace the C/B-ELEC/AC/BUS1/CTL (17XN1).
B. Do this test to make sure that the system operates correctly:
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the ECAM control panel: - push the ELEC key to get the ELEC page. On the lower ECAM display unit:- the normal configuration comes intoview.
5. Close-up________
A. Put the aircraft back to its initial configuration.
(1) On the ECAM control panel, set the UPPER DISPLAY and LOWER DISPLAY potentiometers to OFF.
(2) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
TASK 24-50-00-810-807
Unwanted Warning from the AC2 Busbar
1. Possible Causes_______________
R R RR - SDAC-2 (1WV2) - SDAC-1 (1WV1) - RELAY-BUS 2XP CTL (16XC) - wiring - RELAY-BUS 2XP CTL (20XN2) - C/B-ELEC/AC/BUS2/CTL (17XN2)
2. Job Set-up Information______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION -------------------------------------------------------------------------------
R R AMM AMM AMM AMM AMM ASM ASM 24-41-00-861-002 24-41-00-862-002 31-55-34-000-001 31-55-34-400-001 31-60-00-860-001 24-25/0124-51/03 Energize the Aircraft Electrical Circuits from the External PowerDe-energize the Aircraft Electrical Circuits Supplied from the External Power Removal of the SDAC (1WV1,1WV2) Installation of the SDAC (1WV1,1WV2)EIS Start Procedure
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) Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).
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