R (1) Do this test:
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the ECAM control panel: On the lower ECAM display unit:
- push the ELEC key to get the - the normal configuration comes into
ELEC page: view with the SHED indication shown in amber on the right of the AC ESS busbar. On the upper ECAM display unit:
- the AC ESS BUS SHED indication comes into view.
2. On the panel 11VU, on the MCDU1: On the panel 11VU:
- Adjust the brightness of the - the MCDU1 is on.
MCDU screen.
3. On the panel 25VU: On the overhead panel:
- set the ANN LT switch to TEST. - all the annunciators come on with maximum brightness.
4. Fault Isolation
_______________
A. If the test confirms the fault:
- replace the RELAY-BUS 801XP CTL (7XH).
(1) If the fault continues:
- do a check of the status of the circuit breaker (6XH).
(a) If the circuit breaker is open:
- close it.
1 If it trips:
_
- replace the C/B - ELEC/AC BUS/8XP/MONG (6XH).
2 If the fault continues:
_
- do a check and repair the wiring : . between the circuit breaker (6XH) and the pin X of the relay (7XH) and . between the pin Z of the relay (7XH) and the ground (Ref. ASM 24-52/01).
(b) If the circuit breaker is closed:
- do a check and repair the wiring between the pin B of the relay (7XH) and the pin D/5D of the SDAC1 and 2.
B. Do this test to make sure that the system operates correctly.
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the ECAM control panel: On the lower ECAM display unit:
- push the ELEC key to get the - the normal configuration comes into ELEC page. view.
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.
R (2) On the MCDU1, Fully decrease the brightness of the MCDU screen (display off).
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
TASK 24-50-00-810-802
Loss of the AC Essential Sheddable Busbar
1. Possible Causes
_______________
- CNTOR-AC SHED ESS BUS (8XH)
- RECTIFIER-AC SHED ESS BUS CNTOR (9XH)
- wiring
- C/B-CNTOR SPLY (1XH)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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 AMM 24-52-51-000-001 Removal of the Essential 115/26VAC Autotransformer (5XH) AMM 24-52-51-400-001 Installation of the Essential 115/26VAC
Autotransformer (5XH) AMM 24-52-55-000-001 Removal of the AC Shed Essential Bus Contactor (8XH) AMM 24-52-55-400-001 Installation of the AC Shed Essential Bus Contactor
(8XH) AMM 31-60-00-860-001 EIS Start Procedure ASM 24-52/01
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).
B. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AUTO FLT/MCDU/1 11CA1 B01 49VU LIGHTING/XFMR/115V.5V/ESS BUS 29LP H03 122VU LIGHTING/TST/BOARD/SPLY 30LP X06
C. Test
R (1) Do this test:
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the ECAM control panel:
- push the ELEC key to get the ELEC page.
2. On the panel 11VU, on the MCDU1:
- Fully decrease the brightness of the MCDU screen (display off).
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本文链接地址：A320 Trouble Shooting Manual 排故手册 电源 3(120)
