1. Possible Causes
_______________
- ATSU (1TX1)
- XCVR-VHF, 3 (1RC3)
- wiring of the ATSU COM-2 OUTPUT BUS
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 23-12-33-000-001 Removal of the VHF Transceiver (1RC1, 1RC2, 1RC3)
AMM 23-12-33-400-001 Installation of the VHF Transceiver (1RC1, 1RC2,
1RC3) AMM 46-21-00-710-002 VHF 3 Link Test of the ATSU AMM 46-21-34-000-001 Removal of the Air Traffic Service Unit (ATSU) (1TX1) AMM 46-21-34-400-001 Installation of the Air Traffic Service Unit (ATSU)
(1TX1)
ASM 46-21/06
3. Fault Confirmation
__________________
A. Test
(1) Do the VHF3 Link Test (Ref. AMM TASK 46-21-00-710-002).
4. Fault Isolation
_______________
A. If the test gives the FAILED indication:
- replace the ATSU (1TX1) (Ref. AMM TASK 46-21-34-000-001) and (Ref. AMM TASK 46-21-34-400-001).
(1) If the fault continues:
- replace the XCVR-VHF, 3 (1RC3) (Ref. AMM TASK 23-12-33-000-001) and (Ref. AMM TASK 23-12-33-400-001).
(a) If the fault continues:
- do a check and repair the wiring of the ATSU COM-2 OUTPUT BUS from the ATSU (1TX1) pins AB/1G,1H to the VDR3 (1RC3) pins AB/12A,12B (Ref. ASM 46-21/06).
B. Do the test given in Para. 3.
「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 : 106-149, 151-199, 201-299, 301-399, ∞∞46-21-00∞∞∞∞∞∞∞∞∞∞Page 225
401-499, Aug 01/05 CES Loss of the FWC1 Input Signal Detected by the ATSU
1. Possible Causes
_______________
- FWC-1 (1WW1)
- ATSU (1TX1)
- wiring of the FWC DATA BUS
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
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) AMM 46-21-00-740-001 BITE Test of the ATIMS AMM 46-21-34-000-001 Removal of the Air Traffic Service Unit (ATSU) (1TX1) AMM 46-21-34-400-001 Installation of the Air Traffic Service Unit (ATSU)
(1TX1)
ASM 46-21/05
3. Fault Confirmation
__________________
A. Test
(1) Do the BITE test of the ATIMS (Ref. AMM TASK 46-21-00-740-001).
4. Fault Isolation
_______________
A. If the test gives the maintenance message FWC1(1WW1)/ATSU1(1TX1):
- replace the FWC-1 (1WW1) (Ref. AMM TASK 31-53-34-000-001) and (Ref. AMM TASK 31-53-34-400-001).
(1) If the fault continues:
- replace the ATSU (1TX1) (Ref. AMM TASK 46-21-34-000-001) and (Ref. AMM TASK 46-21-34-400-001).
(a) If the fault continues:
- remove the FWC 1 and the ATSU
- do a check and repair the wiring of the FWC DATA BUS: between pins AB/12J,12K of the FWC 1 and pins AA/6C,6D of the ATSU (Ref. ASM 46-21/05)
- install the FWC 1 and the ATSU.
B. Do the test given in Para. 3.
「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 : 106-149, 151-199, 201-299, 301-399, ∞∞46-21-00∞∞∞∞∞∞∞∞∞∞Page 226
401-499, Aug 01/05 CES Loss of the Frequency Control by the ATSU on the RMP1
1. Possible Causes
_______________
- RMP-COM/NAV FREQ SEL, 1 (1RG1)
- wiring of the DFS PORT SELECT DISCRETE
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 23-13-13-000-001 Removal of the Radio Management Panel (CRMP) (1RG1,
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