R **ON A/C 051-099, 201-210, 301-399, 401-499,

 A. If the test gives this maintenance message:
 (1) HF2 (3RE2) :

 - do the fault isolation procedure (Ref. TASK 23-11-00-810-802).

 (2) HF2 (3RE2)/COAX :

 - do the fault isolation procedure (Ref. TASK 23-11-00-810-804).
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-210, 301-399, 401-499,
 B. If the test gives no maintenance message:
 - replace the COUPLER-HF, 2 (4RE2) (Ref. AMM TASK 23-11-36-000-001) and (Ref. AMM TASK 23-11-36-400-001).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-105, 151-199, ∞∞23-11-00∞∞∞∞∞∞∞∞∞∞Page 228
 201-210, 301-399, 401-499, Aug 01/05 CES

 TASK 23-11-00-810-812

 Loss of the two HF Systems
 1. Possible Causes
_______________
 - COUPLER-HF, 1 (4RE1)

 - COUPLER-HF, 2 (4RE2)

 - wiring from HF 1 coupler (4RE1) to HF 2 coupler (4RE2)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
23-11-00-810-809 Loss of the Two HF Communications
 AMM 23-11-00-710-001 Operational Test of the HF System
 AMM 23-11-00-740-001 Bite Test of the HF System
 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 23-11/01

 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 two HF 1 and HF 2 systems.
____
 _______________

4. Fault Isolation
R **ON A/C 051-099, 201-210, 301-399, 401-499,
 A. If the test gives the two maintenance messages HF1 (3RE1)/COAX and HF2 (3RE2)/COAX :
 - do the fault isolation procedure (Ref. TASK 23-11-00-810-809).
 B. If the test gives no maintenance message:
 - 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:
 - replace the COUPLER-HF, 2 (4RE2) (Ref. AMM TASK 23-11-36-000-001) and (Ref. AMM TASK 23-11-36-400-001).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-105, 151-199, ∞∞23-11-00∞∞∞∞∞∞∞∞∞∞Page 229
 201-210, 301-399, 401-499, Aug 01/05 CES (2) If the fault continues:

 - do a check and repair the wiring from HF 1 coupler (4RE1) to HF 2 coupler (4RE2) of the DISABLE 1 and 2 signals, from pins A/X, Y to pins A/X, Y (Ref. ASM 23-11/01).
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-210, 301-399, 401-499,
 C. Do the operational test of the HF system (Ref. AMM TASK 23-11-00-710-001).
 NOTE : Do this test for the two HF 1 and HF 2 systems.
____
 「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 230
 201-210, 301-399, 401-499, Aug 01/05 CES

R **ON A/C 051-099, 106-149, 201-299, 301-399, 401-499,
 TASK 23-11-00-810-813
 No Tuning of the HF 1 Coupler
 1. Possible Causes
_______________
 - COUPLER-HF, 1 (4RE1)

 - XCVR-HF, 1 (3RE1)

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 23-11-00-710-001 Operational Test of the HF System
 AMM 23-11-33-000-001 Removal of the HF Transceiver (3RE1, 3RE2)
 AMM 23-11-33-400-001 Installation of the HF Transceiver (3RE1, 3RE2)
 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 23-11/01

 3. Fault Confirmation
__________________
 A. Test Do the operational test of the HF system (Ref. AMM TASK 23-11-00-710-001).
 NOTE : Do this test for the HF 1 system only.
____
　
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