4. Fault Isolation
_______________
R **ON A/C 001-049, 101-149, 151-199, 201-299, 301-399, 401-499,
A. If the test gives the maintenance message DMC3 : NO WXR 1 DATA or DMC 3 : NO WXR1 CH1 DATA :
- replace the XCVR-WEATHER RADAR, 1 (1SQ1) (Ref. AMM TASK 34-41-33-000-004) and (Ref. AMM TASK 34-41-33-400-003).
(1) If the fault continues:
- do a check and repair the wiring of the TR1 DATA BUS 1 OUTPUT bus from the weather radar transceiver 1 (1SQ1) to the first terminal block (Ref. ASM 34-41/01).
**ON A/C 051-099,
A. If the test gives the maintenance message DMC3 : NO WXR 1 DATA or DMC3 : NO WR1/2 CH1 DATA :
(1) on the weather radar control unit (3SQ), do a check of the position of the system selector switch.
(a) If the weather radar system 1 is set:
- replace the XCVR-WEATHER RADAR, 1 (1SQ1) (Ref. AMM TASK 34-41-33-000-004) and (Ref. AMM TASK 34-41-33-400-003).
(b) If the weather radar system 2 is set:
- replace XCVR-WEATHER RADAR, 2 (1SQ2) (Ref. AMM TASK 34-41-33-000-004) (Ref. AMM TASK 34-41-33-400-003)
(2) If the fault continues:
- do a check of the wiring of the TR1 DATA BUS 1 OUTPUT bus from the weather radar transceiver 1 (1SQ1) to the first terminal block (Ref. ASM 34-41/01).
(a) If there is no continuity:
- repair the above wiring.
(b) If there is continuity:
- do a check and repair the wiring of the TR2 DATA BUS 1 OUTPUT bus from the weather radar transceiver 2 (1SQ2) to the first terminal block (Ref. ASM 34-41/01).
**ON A/C ALL
B. Do the test given in Para. 3.B.
「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 ∞∞34-41-00∞∞∞∞∞∞∞∞∞∞Page 222
Aug 01/05 CES
Loss of the Weather Radar channel 2 bus Identified by the EIS 1
1. Possible Causes_______________
R - XCVR-WEATHER RADAR, 1 (1SQ1) - XCVR-WEATHER RADAR, 2 (1SQ2) - wiring
2. Job Set-up Information______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM AMM AMM ASM 31-60-00-740-002 34-41-33-000-004 34-41-33-400-003 34-41/01 EIS Input TestRemoval of the Weather Radar Transceiver (1SQ1, 1SQ2)Installation of the Weather Radar Transceiver (1SQ1, 1SQ2)
3. Fault Confirmation__________________
A. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU COM NAV/RADAR/1 5SQ1 K13
R **ON A/C 051-099,
R 121VU COM NAV/RADAR/2 5SQ2 K14
R **ON A/C ALL
B. Test
(1) Do the EIS input test (Ref. AMM TASK 31-60-00-740-002).
4. Fault Isolation
_______________
R **ON A/C 001-049, 101-149, 151-199, 201-299, 301-399, 401-499,
A. If the test gives the maintenance message DMC1 : NO WXR 2 DATA or DMC1 : NO WXR1 CH2 DATA :
(1) on the weather radar control unit (3SQ), do a check of the position of the system selector switch.
(a) If the weather radar system 1 is set:
- replace the XCVR-WEATHER RADAR, 1 (1SQ1) (Ref. AMM TASK 34-41-33-000-004) and (Ref. AMM TASK 34-41-33-400-003).
(b) If the weather radar system 2 is set:
- do a check and repair the wiring of the TR1 DATA BUS 2 OUTPUT bus from the weather radar transceiver 1 (1SQ1) to the first terminal block (Ref. ASM 34-41/01).
**ON A/C 051-099,
A. If the test gives the maintenance message DMC1 : NO WXR 2 DATA or DMC2 : NO WR1/2 CH2 DATA :
- replace the XCVR-WEATHER RADAR, 1 (1SQ1) (Ref. AMM TASK 34-41-33-000-004) and (Ref. AMM TASK 34-41-33-400-003).
(1) If the fault continues:
- replace XCVR-WEATHER RADAR, 2 (1SQ2) (Ref. AMM TASK 34-41-33-000-004) (Ref. AMM TASK 34-41-33-400-003)
(2) If the fault continues:
- do a check of the wiring of the TR1 DATA BUS 2 OUTPUT bus from the weather radar transceiver 1 (1SQ1) to the first terminal block (Ref. ASM 34-41/01).
(a) If there is no continuity:
- repair the above wiring. 中國航空網(wǎng) www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 導航 NAVIGATION 3(9)
