- replace the ACP-F/O (2RN2) (Ref. AMM TASK 23-51-12-000-001) and (Ref. AMM TASK 23-51-12-400-001).
(2) If there is no 28VDC:
- do a check for a ground signal at pin A/N of the First Officer ACP (2RN2) (Ref. ASM 23-51/03).
(a) If there is no ground signal:
- repair the wiring between First Officer ACP (2RN2) pin A/N and the ground terminal (Ref. ASM 23-51/03).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞23-51-00∞∞∞∞∞∞∞∞∞∞Page 203
May 01/05 CES (b) If there is a ground signal:
- do a check and repair the wiring from First Officer ACP (2RN2) pin A/M to the first terminal block (Ref. ASM 23-51/03).
R **ON A/C 002-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
A. If the test gives the maintenance message ACP2(2RN2):
- do a check for 28VDC at pin A/M of the First Officer ACP (2RN2) (Ref. ASM 23-51/03).
(1) If there is 28VDC:
- replace the ACP-F/O (2RN2) (Ref. AMM TASK 23-51-12-000-001) and (Ref. AMM TASK 23-51-12-400-001).
(2) If there is no 28VDC:
- do a check for a ground signal at pin A/N of the First Officer ACP (2RN2) (Ref. ASM 23-51/03).
(a) If there is no ground signal:
- repair the wiring between First Officer ACP (2RN2) pin A/N and the ground terminal (Ref. ASM 23-51/03).
(b) If there is a ground signal:
- do a check and repair the wiring from First Officer ACP (2RN2) pin A/M to the first terminal block (Ref. ASM 23-51/03).
**ON A/C ALL
B. Do the test given in Para. 3.
TASK 23-51-00-810-803
Failure of the Third Occupant ACP
1. Possible Causes
_______________
- ACP-3RD OCCPNT (2RN3)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 23-51-00-740-002 BITE Test of the Audio System AMM 23-51-12-000-001 Removal of the Audio Control Panel (ACP) (2RN1, 2RN2, 2RN3, 2RN4, 2RN5) AMM 23-51-12-400-001 Installation of the Audio Control Panel (ACP) (2RN1, 2RN2, 2RN3, 2RN4, 2RN5) ASM 23-51/04
3. Fault Confirmation
__________________
A. Test Do the BITE test of the AMU-ACP (Ref. AMM TASK 23-51-00-740-002).
4. Fault Isolation
_______________
R **ON A/C 001-001, 051-052,
A. If the test gives the maintenance message AUDIO CONTROL PANEL 3:
- do a check for 28VDC at pin A/M of the Third Occupant ACP (2RN3) (Ref. ASM 23-51/04).
(1) If there is 28VDC:
- replace the ACP-3RD OCCPNT (2RN3) (Ref. AMM TASK 23-51-12-000-001) and (Ref. AMM TASK 23-51-12-400-001).
(2) If there is no 28VDC:
- do a check for a ground signal at pin A/N of the Third Occupant ACP (2RN3) (Ref. ASM 23-51/04).
(a) If there is no ground signal:
- repair the wiring between Third Occupant ACP (2RN3) pin A/N and the ground terminal (Ref. ASM 23-51/04).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞23-51-00∞∞∞∞∞∞∞∞∞∞Page 205
May 01/05 CES (b) If there is a ground signal:
- do a check and repair the wiring from Third Occupant ACP (2RN3) pin A/M to the first terminal block (Ref. ASM 23-51/04).
R **ON A/C 002-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
A. If the test gives the maintenance message ACP3(2RN3):
- do a check for 28VDC at pin A/M of the Third Occupant ACP (2RN3) (Ref. ASM 23-51/04).
(1) If there is 28VDC:
- replace the ACP-3RD OCCPNT (2RN3) (Ref. AMM TASK 23-51-12-000-001) and (Ref. AMM TASK 23-51-12-400-001).
(2) If there is no 28VDC:
- do a check for a ground signal at pin A/N of the Third Occupant ACP (2RN3) (Ref. ASM 23-51/04).
(a) If there is no ground signal:
- repair the wiring between Third Occupant ACP (2RN3) pin A/N and the ground terminal (Ref. ASM 23-51/04). 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 COMMUNICATIONS 通讯2(4)
