APU Generator electrical-parameter indication(s) replaced by amber XX (131-9(A))

TASK 49-00-81-810-890-A
APU Generator electrical-parameter indication(s) replaced by amber XX (131-9(A))

1. Possible Causes

connection between the EGIU-2 (22XU2) and the SDAC 1 and 2 (1WV1(2)) and/or the APU GCU (1XS)
GCU-APU [1XS]
EGIU-2 [22XU2]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 24-22-00-810-808-A	APU GEN Voltage, Frequency and Load Indication Lost or Incorrect
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 24-23-34-000-001	Removal of the GCU-APU
AMM 24-23-34-400-001	Installation of the GCU-APU
AMM 49-00-00-710-010	Operational Test of the APU

3. Fault Confirmation
Subtask 49-00-81-710-230-A ** ON A/C NOT FOR ALL

A. Do the operational test of the APU AMM 49-00-00-710-010.
Do a check of the APU GEN electrical-parameter indications on the lower ECAM DU (APU Page).

4. Fault Isolation
Subtask 49-00-81-810-155-A ** ON A/C NOT FOR ALL

A. Maintenance Action
(1) If all electrical parameter indications are replaced by amber XX:

do the trouble shooting of the connection between the EGIU-2 (22XU2) and the SDAC 1 and 2 (1WV1(2)) and/or the APU GCU (1XS) (Ref. TSM TASK 24-22-00-810-808).

(2) If one or two electrical parameter indications are replaced by amber XX:

replace the GCU-APU [1XS] AMM 24-23-34-000-001 and AMM 24-23-34-400-001.

(a) If the fault continues:

replace the EGIU-2 [22XU2] AMM 24-22-33-000-001 and AMM 24-22-33-400-002.

Subtask 49-00-81-710-231-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:34:38 UTC