- repair the wiring between CALLS/MECH pushbutton switch (1WC) pins 4 and 8 and the ground terminal (Ref. ASM 23-42/01).
(b) If there is a ground signal:
- do a check of the wiring between the circuit breaker (2WC) and the first terminal block (Ref. ASM 23-42/01).
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1_ If there is no continuity:
- repair the above wiring.
2_ If there is continuity:
- replace the C/B-EIS/HORN/SPLY (2WC)
(2) If the circuit breaker is open:
- close it.
(a) If it opens again:
- replace the C/B-EIS/HORN/SPLY (2WC).
(b) If it opens again:
- do a check for a short to ground and repair the wiring of the system (Ref. ASM 23-42/01).
C. Do the test given in Para. 3.
TASK 23-42-00-810-807
Failure of the Mechanic Call
1. Possible Causes
_______________
- P/B SW-COCKPIT CALL (10WC)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 23-42-00-710-001 Operational Test of the Mechanic Call ASM 23-42/01
3. Fault Confirmation
__________________
A. Test
(1) Do the operational test of the mechanic call (Ref. AMM TASK 23-42-00-710-001).
4. Fault Isolation
_______________
A. If during the operational test the indicator light and the aural warning do not operate:
- replace the P/B SW-COCKPIT CALL (10WC).
(1) If the fault continues:
- do a check and repair the wiring of the pushbutton switch (10WC) to the first terminal block (Ref. ASM 23-42/01).
B. Do the test given in Para. 3.
TASK 23-42-00-810-808
Continuous Operation of the Crew Call Buzzer
1. Possible Causes
_______________
- DIR-CIDS, 1 (101RH)
- DIR-CIDS, 2 (102RH)
- FWC-1 (1WW1)
- FWC-2 (1WW2)
- AMU (1RN)
- P/B SW-COCKPIT CALL (10WC)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 23-12-00-710-001 Operational Test of the VHF System
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)
AMM 23-73-34-000-001 Removal of the CIDS Director (101RH,102RH)
AMM 23-73-34-400-001 Installation of the CIDS Director (101RH,102RH)
AMM 31-53-34-000-001 Removal of the Flight Warning Computer (FWC)
(1WW1,1WW2)
AMM 31-53-34-400-001 Installation of the Flight Warning computer (FWC)
(1WW1,1WW2)
ASM 23-42/01
3. Fault Confirmation
__________________
A. Test
(1) Do the operational test of the mechanic call (Ref. AMM TASK 23-12-00-710-001).
4. Fault Isolation
_______________
A. If, during the operational test, the crew call buzzer operates
continuously:
- replace the DIR-CIDS, 1 (101RH) (Ref. AMM TASK 23-73-34-000-001) and (Ref. AMM TASK 23-73-34-400-001).
(1) If the fault continues:
- replace the DIR-CIDS, 2 (102RH) (Ref. AMM TASK 23-73-34-000-001) and (Ref. AMM TASK 23-73-34-400-001).
「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 ∞∞23-42-00∞∞∞∞∞∞∞∞∞∞Page 211
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(2) If the fault continues:
- replace the FWC-1 (1WW1) (Ref. AMM TASK 31-53-34-000-001) and (Ref. AMM TASK 31-53-34-400-001).
(3) If the fault continues:
- replace the FWC-2 (1WW2) (Ref. AMM TASK 31-53-34-000-001) and (Ref. AMM TASK 31-53-34-400-001). 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1(152)
