1. Possible Causes
_______________
- GPWC (1WZ)
- SDAC-1 (1WV1)
- SDAC-2 (1WV2)
- wiring from GPWC to SDAC1 and SDAC2
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 31-55-34-000-001 Removal of the SDAC (1WV1,1WV2)
AMM 31-55-34-400-001 Installation of the SDAC (1WV1,1WV2)
AMM 34-48-34-000-001 Removal of the GPWC (1WZ)
AMM 34-48-34-400-001 Installation of the GPWC (1WZ)
ASM 31-54/00
ASM 34-48/00
3. Fault Confirmation
__________________
**ON A/C ALL
R Post SB 34-1189 For A/C 001-049,051-060,101-104,
A. Test
Not applicable, you cannot confirm this fault on the ground.
4. Fault Isolation
_______________
**ON A/C ALL
R Post SB 34-1189 For A/C 001-049,051-060,101-104,
A. If TERR STBY memo is continuously display on EWD:
- replace the GPWC (1WZ) (Ref. AMM TASK 34-48-34-000-001) and (Ref. AMM TASK 34-48-34-400-001).
(1) If the fault continues:
- replace the SDAC-1 (1WV1) (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001).
(a) If the fault continuous:
- replace the SDAC-2 (1WV2) (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001).
1 If the fault continuous:
_
- do a check and repair the wiring from GPWC to SDAC1 and SDAC2: (Ref. ASM 34-48/00) and (Ref. ASM 31-54/00) DME - FAULT ISOLATION PROCEDURES
________________________________
TASK 34-51-00-810-801
Failure of the DME Interrogator 1
1. Possible Causes
_______________
- INTRG-DME, 1 (2SD1)
- short to ground at the wiring between the circuit breaker (1SD1) and the DME receiver 1 (2SD1)
- C/B-NAV/DME 1 (1SD1)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 34-51-00-740-002 BITE Test of the DME
AMM 34-51-33-000-001 Removal of the DME Interrogator (2SD1,2SD2)
AMM 34-51-33-400-001 Installation of the DME Interrogator (2SD1,2SD2)
ASM 34-51/01
3. Fault Confirmation
__________________
A. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU NAV/DME/1 1SD1 G14
B. Test
(1) If the circuit breaker (1SD1) trips, refer to Para. 4. C. of this trouble shooting procedure.
(2) Do the BITE test of the DME (Ref. AMM TASK 34-51-00-740-002).
- If the BITE test is not possible, refer to Para. 4. B. of this trouble shooting procedure.
「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 ∞∞34-51-00∞∞∞∞∞∞∞∞∞∞Page 201
Feb 01/00R
CES 4. Fault Isolation
_______________
R
A. If the circuit breaker (1SD1) is closed, and if the BITE test gives the maintenance message DME1 (2SD1):
- replace the INTRG-DME, 1 (2SD1) (Ref. AMM TASK 34-51-33-000-001) and
(Ref. AMM TASK 34-51-33-400-001). R
B. If the circuit breaker (1SD1) is closed and if the BITE test is not possible
- do a check for 115VAC at pin AC/1 of the ADF receiver 1.
(1) If there is no 115VAC:
- do a check of the wiring of the 115VAC signal from circuit breaker (1SD1) to DME receiver 1 (2SD1) (Ref. ASM 34-51/01).
(a) If there is no continuity:
- repair the above wiring.
(b) If there is continuity:
- replace the C/B-NAV/DME1 (1SD1).
(2) If there is 115VAC: 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 导航 NAVIGATION 3(90)
