- close it.
(a) If it opens again:
- replace the LOUD SPEAKER-F/O (8WW) (Ref. AMM TASK 31-53-21-000-001) and (Ref. AMM TASK 31-53-21-400-001).
1_ If the fault continues:
- do a check for a short to ground at the wiring between the
First Officer loud speaker (8WW) and the circuit breaker
(4WW) (Ref. ASM 31-51/01).
a If there is a short to ground:
_
- repair the above wiring. b If there is no short to ground:
_ - replace the C/B-F/O/LOUD/SPKR (4WW).
(b) If the circuit breaker stays closed and the fault continues:
- replace the LOUD SPEAKER-F/O (8WW) (Ref. AMM TASK 31-53-21-000-001) and (Ref. AMM TASK 31-53-21-400-001).
C. Do the test given in Para. 3.
TASK 23-51-00-810-842
Loss of the 3rd OCCPNT ACP Emergency Function for the CAPT ACP
1. Possible Causes
_______________
- AMU (1RN)
- SEL SW-AUDIO SWITCHING (16RN)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
IPC 235108 AMM 23-51-00-710-003 Operational Test of the CAPT and F/O ACPs Switching
R to the 3rd OCCUPANT ACP AMM 23-51-34-000-001 Removal of the Audio Management Unit (AMU) (1RN) AMM 23-51-34-400-001 Installation of the Audio Management Unit (AMU) (1RN) ASM 23-51/04
3. Fault Confirmation
__________________
A. Test
(1) Do the operational test of the Captain ACP switching to the 3rd OCCPNT ACP (Ref. AMM TASK 23-51-00-710-003).
NOTE : Do this test for the Captain station only.
____
4. Fault Isolation
_______________
A. If the Captain ACP switching to 3rd OCCPNT is inoperative:
- replace the AMU (1RN) (Ref. AMM TASK 23-51-34-000-001) and (Ref. AMM TASK 23-51-34-400-001).
(1) If the fault continues:
- replace the SEL SW-AUDIO SWITCHING (16RN) (Ref. IPC 235108).
(a) If the fault continues:
- do a check for a ground signal at pin 13 of the AUDIO SWITCHING selector switch (16RN) (Ref. ASM 23-51/04).
1 If there is no ground signal:
_
- repair the wiring between the AUDIO SWITCHING selector switch (16RN) 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 264
May 01/05 CES
2_ If there is a ground signal:
- do a check and repair the wiring between the AUDIO SWITCHING
selector switch (16RN) pin 14 and the AMU (1RN) pin AA/14K
(Ref. ASM 23-51/04).
B. Do the test given in Para. 3.
TASK 23-51-00-810-843
Loss of the 3rd OCCPNT ACP Emergency Function for the F/O ACP
1. Possible Causes
_______________
- AMU (1RN)
- SEL SW-AUDIO SWITCHING (16RN)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
IPC 235108 AMM 23-51-00-710-003 Operational Test of the CAPT and F/O ACPs Switching
R to the 3rd OCCUPANT ACP AMM 23-51-34-000-001 Removal of the Audio Management Unit (AMU) (1RN) AMM 23-51-34-400-001 Installation of the Audio Management Unit (AMU) (1RN) ASM 23-51/04
3. Fault Confirmation
__________________
A. Test
(1) Do the operational test of the First Officer ACP switching to the Third Occupant ACP (Ref. AMM TASK 23-51-00-710-003).
NOTE : Do this test for the First Officer station only.
____
4. Fault Isolation
_______________
A. If the First Officer ACP switching to the Third Occupant is inoperative:
- replace the AMU (1RN) (Ref. AMM TASK 23-51-34-000-001) and (Ref. AMM TASK 23-51-34-400-001).
(1) If the fault continues:
- replace the SEL SW-AUDIO SWITCHING (16RN) (Ref. IPC 235108).
(a) If the fault continues:
- do a check for a ground signal at pin 13 of the AUDIO SWITCHING selector switch (16RN) (Ref. ASM 23-51/04).
1 If there is no ground signal:
_
- repair the wiring between the AUDIO SWITCHING selector switch (16RN) and the ground terminal (Ref. ASM 23-51/04).
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本文链接地址：A320 Trouble Shooting Manual 排故手册 COMMUNICATIONS 通讯2(23)
