- make sure that there is continuity on the feedline between the HF 1 coupler (4RE1) and the HF antenna (5RE) (Ref. ASM 23-11/01).
- repair the HF 1 feeder (6RE1) if necessary
「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 ∞∞23-11-00∞∞∞∞∞∞∞∞∞∞Page 245
May 01/05 CES
- install the HF 1 coupler.
(2) If the fault continues:
- make sure that the bonding contact resistance between the antenna and the fuselage structure is not higher than 5 milliohms (Ref. AMM TASK 20-28-00-912-005).
(3) If the fault continues:
- replace the ANTENNA-HF (5RE) (Ref. AMM TASK 23-11-11-000-001) and (Ref. AMM TASK 23-11-11-400-001).
R **ON A/C 051-099, 106-149, 201-299, 301-399, 401-499,
A. If the test gives the maintenance message HF1 CPLR (4RE1)/FEEDER (6RE1)/ANTENNA (5RE)
- replace the COUPLER-HF, 1 (4RE1) (Ref. AMM TASK 23-11-36-000-001) and (Ref. AMM TASK 23-11-36-400-001).
(1) If the fault continues:
- remove the HF 1 coupler
- make sure that there is continuity on the feedline between the HF 1 coupler (4RE1) and the HF antenna (5RE) (Ref. ASM 23-11/01).
- repair the HF 1 feeder (6RE1) if necessary
- install the HF 1 coupler.
(2) If the fault continues:
- make sure that the bonding contact resistance between the antenna and the fuselage structure is not higher than 5 milliohms (Ref. AMM TASK 20-28-00-912-005).
(3) If the fault continues:
- replace the ANTENNA-HF (5RE) (Ref. AMM TASK 23-11-11-000-001) and (Ref. AMM TASK 23-11-11-400-001).
**ON A/C ALL
B. Do the test given in Para. 3.
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-210, 301-399, 401-499,
TASK 23-11-00-810-822
Loss of the HF 2 Antenna Coupler Function
1. Possible Causes
_______________
- COUPLER-HF, 2 (4RE2)
- ANTENNA-HF (5RE)
- feedline
- HF 2 feeder (6RE2)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 20-28-00-912-005 Electrical Bonding of Antennas With Conductive Bolts. AMM 23-11-00-740-001 Bite Test of the HF System AMM 23-11-11-000-001 Removal of the HF Antenna (5RE) AMM 23-11-11-400-001 Installation of the HF Antenna (5RE) AMM 23-11-36-000-001 Removal of the HF Antenna Coupler AMM 23-11-36-400-001 Installation of the HF Antenna Coupler ASM 23-11/02
3. Fault Confirmation
__________________
A. Test
(1) Do the BITE test of the HF system (Ref. AMM TASK 23-11-00-740-001).
NOTE : Do this test for the HF 2 only.
____
4. Fault Isolation
_______________
**ON A/C 001-049, 101-105, 151-199,
A. If the test gives the maintenance message HF2 CPLR (4RE2):
- replace the COUPLER-HF, 2 (4RE2) (Ref. AMM TASK 23-11-36-000-001) and (Ref. AMM TASK 23-11-36-400-001).
(1) If the fault continues:
- remove the HF 2 coupler
- make sure that there is continuity on the feedline between the HF 2 coupler (4RE2) and the HF antenna (5RE) (Ref. ASM 23-11/02).
- repair the HF 2 feeder (6RE2) if necessary
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-105, 151-199, ∞∞23-11-00∞∞∞∞∞∞∞∞∞∞Page 247
201-210, 301-399, 401-499, Aug 01/05 CES
- install the HF 2 coupler.
(2) If the fault continues:
- make sure that the bonding contact resistance between the antenna and the fuselage structure is not higher than 5 milliohms (Ref. AMM TASK 20-28-00-912-005).
(3) If the fault continues:
- replace the ANTENNA-HF (5RE) (Ref. AMM TASK 23-11-11-000-001) and (Ref. AMM TASK 23-11-11-400-001).
R **ON A/C 051-099, 201-210, 301-399, 401-499,
A. If the test gives the maintenance message HF2 CPLR (4RE2)/FEEDER (6RE2)/ANTENNA (5RE2)
- replace the COUPLER-HF, 2 (4RE2) (Ref. AMM TASK 23-11-36-000-001) and (Ref. AMM TASK 23-11-36-400-001).
(1) If the fault continues:
- remove the HF 2 coupler
- make sure that there is continuity on the feedline between the HF 2 coupler (4RE2) and the HF antenna (5RE) (Ref. ASM 23-11/02).
- repair the HF 2 feeder (6RE2) if necessary 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 COMMUNICATIONS 通訊1(56)
