W DOC AIRBUS | TSM A320F

GEN 1 Voltage, Frequency and Load Indication Lost or Incorrect

TASK 24-22-00-810-805-A
GEN 1 Voltage, Frequency and Load Indication Lost or Incorrect

1. Possible Causes
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
TSM TASK 24-00-00-810-803-A
Circuit Breaker Tripped and/or C/B TRIPPED Warning
AMM 24-21-51-000-040
Removal of the Integrated Drive Generator - IDG 1(2)
AMM 24-21-51-000-803
Removal of the Integrated Drive Generator - IDG 1(2)
AMM 24-21-51-400-040
Installation of the Integrated Drive Generator - IDG 1(2)
AMM 24-21-51-400-803
Installation of the Integrated Drive Generator - IDG 1(2)
ASM 242201
ASM 242202
AMM 24-22-33-000-001
Removal of the EGIU-1(2)
AMM 24-22-33-400-002
Installation of the EGIU-1(2)
AMM 24-22-34-000-001
Removal of the GCU-1(2)
AMM 24-22-34-400-001
Installation of the GCU-1(2)
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
ASM 315403
AMM 31-60-00-860-001
EIS Start Procedure
AMM 31-60-00-860-002
EIS Stop Procedure
3. Fault Confirmation
Subtask 24-22-00-860-050-A
A. Job Set-up
   (1) Aircraft Maintenance Configuration
     (a) Energize the aircraft electrical circuits
AMM 24-41-00-861-002.
     (b) Do the EIS start procedure (Lower ECAM DU only) AMM 31-60-00-860-001.
Subtask 24-22-00-710-053-A ** ON A/C NOT FOR ALL
B. Test
ACTION
RESULT
1.On the ECAM control panel:
  • push the ELEC key to get the ELEC page.
On the lower ECAM DU:
  • if amber crosses replace the voltage indication or the frequency indication of the GEN 1 or if the voltage indication shows amber, do the trouble shooting given in Para. 4.B.

On the lower ECAM DU:
  • if amber crosses replace the load indication of the GEN 1 or if the load indication shows amber, do the trouble shooting given in Para. 4.C.

On the lower ECAM DU:
  • if amber crosses replace voltage, frequency and load indications, do the trouble shooting given in Para. 4.D.
Subtask 24-22-00-710-053-B ** ON A/C NOT FOR ALL
B. Test
ACTION
RESULT
1.On the ECAM control panel:
  • push the ELEC key to get the ELEC page.
On the lower ECAM DU:
  • if amber crosses replace the voltage indication or the frequency indication of the GEN 1 or if the voltage indication or the frequency indication shows amber, do the trouble shooting given in Para. 4.B.

On the lower ECAM DU:
  • if amber crosses replace the voltage indication or the frequency indication of the GEN 1, or if the load indication is shown in amber or if the load indication is replaced by amber crosses, do the trouble shooting given in Para. 4.C.

On the lower ECAM DU:
  • if amber crosses replace voltage, frequency and load indications, do the trouble shooting given in Para. 4.D.
4. Fault Isolation
Subtask 24-22-00-865-053-A
A. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
123VUGEN1/EGIU1/115VAC23XU1AF12
Subtask 24-22-00-810-054-A ** ON A/C NOT FOR ALL
B. If the test confirms the fault:
   (1) If the fault continues:
  • Do a check of the position of the circuit breaker (23XU1).
     (a) If the circuit breaker (23XU1) is open:
       1 If the fault continues:
  • Replace the C/B-GEN1/EGIU1/115VAC [23XU1] .
     (b) If the circuit breaker (23XU1) is closed:
  • Do a check of the wiring ASM 242201 between:
    . The pin 2 of the circuit breaker GEN1/EGIU1/115VAC (23XU1) and the pin AA/15D of the EGIU1 (22XU1)
    . The pin 1 of the circuit breaker GEN1/EGIU1/115VAC (23XU1) and the pin A/D of the GLC1 (9XU1).
       1 If the wiring is not correct:
  • Repair the wiring .
       2 If the wiring is correct:
  • Do a check and repair the feeder ASM 242201 between:
    . The terminal T1 of the engine 1 IDG (4000XU) and the pin A/D of the GLC1 (9XU1)
    . The terminal T2 of the engine 1 IDG (4000XU) and the pin A/E of the GLC1 (9XU1)
    . The terminal T3 of the engine 1 IDG (4000XU) and the pin A/F of the GLC1 (9XU1).
Subtask 24-22-00-810-054-B ** ON A/C NOT FOR ALL
B. If the test confirms the fault:
   (1) If the fault continues:
  • Do a check of the position of the circuit breaker (23XU1).
     (a) If the circuit breaker (23XU1) is open:
       1 If the fault continues:
  • Replace the C/B-GEN1/EGIU1/115VAC [23XU1] .
     (b) If the circuit breaker (23XU1) is closed:
  • Do a check of the wiring ASM 242201 between:
    . The pin 2 of the circuit breaker GEN1/EGIU1/115VAC (23XU1) and the pin AA/15D of the EGIU1 (22XU1)
    . The pin 1 of the circuit breaker GEN1/EGIU1/115VAC (23XU1) and the pin 1 of the generator 1 contactor module (30XN1).
       1 If the wiring is not correct:
  • Repair the wiring .
       2 If the wiring is correct:
  • Do a check and repair the feeder ASM 242201 between:
    . The terminal T1 of the engine 1 IDG (4000XU) and the pin 1 of the generator 1 contactor module (30XN1)
    . The terminal T2 of the engine 1 IDG (4000XU) and the pin 2 of the generator 1 contactor module (30XN1)
    . The terminal T3 of the engine 1 IDG (4000XU) and the pin 3 of the generator 1 contactor module (30XN1).
Subtask 24-22-00-810-054-C ** ON A/C NOT FOR ALL
B. If the test confirms the fault:
   (1) If the fault continues:
     (a) If the fault continues:
  • do a check and repair the wiring between the pins A/9, A/10 of the engine 1 IDG (4000XU) and the pins C/12, C/13 of the GCU 1 (1XU1) ASM 242201.
Subtask 24-22-00-810-054-F ** ON A/C NOT FOR ALL
B. If the test confirms the fault:
   (1) If the fault continues:
     (a) If the fault continues:
  • Do a check and repair the wiring between the pins B/11, B/12 of the engine 1 IDG (4000XU) and the pins C/12, C/13 of the GCU 1 (1XU1) ASM 242201.
Subtask 24-22-00-810-066-A ** ON A/C NOT FOR ALL
C. If the test confirms the fault:
   (1) If the fault continues:
  • do a check of the wiring between:
    .the pin A/2B of the GCU1 (1XU1) and the pin A/7D of the EGIU1 (22XU1)
    .the pin A/2C of the GCU1 (1XU1) and the pin A/7C of the EGIU1 (22XU1).
    Then make sure that the ground wire is correctly connected to the pin A/6C of the EGIU1 (22XU1) ASM 242202.
   (2) If the fault continues:
Subtask 24-22-00-810-070-A ** ON A/C NOT FOR ALL
D. If the test confirms the fault:
  • do a check and repair the wiring ASM 315403 between:
    . the pin A/1A of the EGIU1 (22XU1) and the pin B/10G of the SDAC1 (1WV1)
    . the pin A/1B of the EGIU1 (22XU1) and the pin B/10H of the SDAC1 (1WV1)
    . the pin A/1C of the EGIU1 (22XU1) and the pin B/10G of the SDAC2 (1WV2)
    . the pin A/1D of the EGIU1 (22XU1) and the pin B/10H of the SDAC2 (1WV2)
Subtask 24-22-00-810-066-B ** ON A/C NOT FOR ALL
E. If the test confirms the fault:
Subtask 24-22-00-810-070-B ** ON A/C NOT FOR ALL
F. If the test confirms the fault:
  • do a check and repair the wiring ASM 315403 between:
    . the pin A/8F of the GCU 1 (1XU1) and the pin B/10G of the SDAC 1 (1WV1)
    . the pin A/7F of the GCU 1 (1XU1) and the pin B/10H of the SDAC 1 (1WV1)
    . the pin A/8J of the GCU 1 (1XU1) and the pin B/10G of the SDAC 2 (1WV2)
    . the pin A/8H of the GCU 1 (1XU1) and the pin B/10H of the SDAC 2 (1WV2).
Subtask 24-22-00-710-054-A
G. Do this test to make sure that the system operates correctly:
ACTION
RESULT
On the ECAM control panel:
  • push the ELEC key to get the ELEC page.
On the lower ECAM DU:
  • the ELEC page comes into view.
    In the GEN 1 box:
  • the normal electrical parameters come into view.
5. Close-up
Subtask 24-22-00-860-051-A
A. Put the aircraft back to its initial configuration.
   (1) Do the EIS stop procedure AMM 31-60-00-860-002.
   (2) De-energize the aircraft electrical circuits
AMM 24-41-00-862-002.
[Rev.8 from Aug 2018] 2026.04.04 04:26:34 UTC
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