W DOC AIRBUS | TSM A320F

CPC 1 and CPC 2 Fault

TASK 21-61-00-810-895-A
CPC 1 and CPC 2 Fault

1. Possible Causes
  • wiring
  • CONT-AIR COND SYSTEM 1 [47HH]
  • CONT-AIR COND SYSTEM 2 [57HH]
  • PRESS CONT 1 [11HL]
  • PRESS CONT 2 [12HL]
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 21-31-00-710-002
Operational Test of the Pressure Control and Monitoring
AMM 21-31-34-000-001
Removal of the Cabin Pressure Controller
AMM 21-31-34-400-001
Installation of the Cabin Pressure Controller
ASM 216101
ASM 216103
AMM 21-61-34-000-002
Removal of the Air-Conditioning System Controller
AMM 21-61-34-400-002
Installation of the Air-Conditioning System Controller
3. Fault Confirmation
Subtask 21-61-00-710-181-A ** ON A/C NOT FOR ALL
A. Do the operational test of the pressure control and monitoring system AMM 21-31-00-710-002.
4. Fault Isolation
Subtask 21-61-00-810-229-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message TEST OK, but the POST FLIGHT REPORT and/or the PREVIOUS LEG REPORT gives the maintenance message CPC1(11HL)+CPC2 (12HL):
  • do a check and repair the wiring ASM 216103 from:
  • the CPC 1 (11HL)AA pin 1A to the ACSC 1 (47HH)AA pin 2F,
  • the CPC 1 (11HL)AA pin 2A to the ACSC 1 (47HH)AA pin 2G.
   (1) If the fault continues:
   (2) If the fault continues:
  • do a check and repair the wiring ASM 216101 from:
  • the CPC 2 (12HL)AA pin 1A to the ACSC 2 (57HH)AA pin 2F,
  • the CPC 2 (12HL)AA pin 2A to the ACSC 2 (57HH)AA pin 2G.
   (3) If the fault continues:
Subtask 21-61-00-720-066-A ** ON A/C NOT FOR ALL
B. If the test is not OK, but the POST FLIGHT REPORT and/or the PREVIOUS LEG REPORT gives the maintenance message CPC1(11HL)+CPC2(12HL):
   (1) If the fault continues:
[Rev.8 from Aug 2018] 2026.04.04 04:24:58 UTC
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