4. Fault Isolation
_______________
A. If the test gives the maintenance message VDR3(1RC3)/ATSU1(1TX1):
(1) make sure that the circuit breakers 2RC3, 3TX1 and 5TX1 are closed.
(a) If the fault continues: - open and close the circuit breaker 2RC3 to reset the VHF3.
(2) If the fault continues:
1_ If the fault continues:
- open and close the circuit breakers 3TX1 and 5TX1 to reset
the ATSU (wait one minute approximately).
- 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:
- 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:
_
- remove the VDR 3 (VHF3 transceiver) and the ATSU
- do a check and repair the wiring of the VHF3 DATA BUS: between pins AB/10C,10D of the VDR 3 (VHF3 transceiver) and pins AA/4J,4K of the ATSU (Ref. ASM 46-21/05)
- install the VDR 3 (VHF3 transceiver) 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 215
401-499, Aug 01/05 CES
Loss of the SDU1 Data Detected by the ATSU
1. Possible Causes
_______________
- SATELLITE DATA UNIT (5RV1)
- ATSU (1TX1)
- wiring of the SATCOM DATA BUS
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 23-28-34-000-001 Removal of the Satellite Data Unit (SDU) 105RV1 AMM 23-28-34-400-001 Installation of the Satellite Data Unit (SDU) 105RV1 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. Table of the circuit breakers used in this procedure:
-------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
-------------------------------------------------------------------------------
121VU ATSU 1 3TX1 L16 121VU ATSU 1/SWTG 5TX1 L15
B. 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 SDU1(5RV1)/ATSU1(1TX1):
(1) make sure that the circuit breakers 1RV, 2RV, 3TX1 and 5TX1 are closed.
(a) If the fault continues:
- open and close the circuit breakers 1RV and 2RV to reset the Satcom.
「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 216
401-499, Aug 01/05 CES (2) If the fault continues:
1_ If the fault continues:
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本文链接地址：A320 Trouble Shooting Manual 排故手册 信息系统(12)
