(6) If the resistance (line to line) is more than 200 ohms (open circuit):
- disconnect the electrical connector 7247VC1 from the DEU mount 2015VU1 (Ref. AMM TASK 23-73-48-000-001),
- make sure that the resistance (line to line) is not more than 200 ohms (open circuit) between: DEU mount 2015VU1 pin A/1 and pin A/2
(a) If there is an open circuit:
- install a new DEU mount 2015VU1 (Ref. AMM TASK 23-73-48-400-001)
(b) If there is no open circuit:
- reconnect the electrical connector to the DEU mount 2015VU1 (Ref. AMM TASK 23-73-48-400-001)
- disconnect the electrical connector 7201VC1 from the DEU mount 2011VU1 (Ref. AMM TASK 23-73-48-000-001),
- do a check of the wiring (continuity-check) between: DIR-CIDS (101RH) connector AA/D14 and the connector 7201VC1 pin A/1, DIR-CIDS (101RH) connector AA/E14 and the connector 7201VC1 pin A/2.
1 If there is no continuity:
_
- repair the wiring between the DIR-CIDS (101RH) and the connector 7201VC1 (Ref. ASM 23-73/06).
2 If there is continuity:
_
- do a check of the wiring (continuity-check) between: DEU mount 2011VU1 pin A/1 and pin A/9 , DEU mount 2011VU1 pin A/2 and pin A/10.
「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 : 151-199, ∞∞23-73-00∞∞∞∞∞∞∞∞∞∞Page A263
Aug 01/05 CES b If there is continuity:
a_ If there is no continuity:
- install a new DEU mount 2011VU1 (Ref. AMM TASK 23-73-48-
000-001) and (Ref. AMM TASK 23-73-48-400-001)
_
- reconnect the connector 7201VC1 to the DEU mount 2011VU1 (Ref. AMM TASK 23-73-48-400-001)
- do the steps 4. B. (6) again for the subsequent DEU mounts until the maintenance message stops: DIR-CIDS (101RH) and DEU mount 2011VU3/connector 7201VC3, DIR-CIDS (101RH) and DEU mount 2015VU1/connector 7247VC1.
(7) If the resistance (line to line) is less than 80 ohms (short circuit):
- remove the DEU-B (300RH5) (Ref. AMM TASK 23-73-47-000-001).
- do a check for a short circuit again.
(a) If there is no short circuit:
- install a new DEU-B (300RH5) (Ref. AMM TASK 23-73-47-400-001).
(b) If there is a short circuit:
- install the removed DEU-B (300RH5) (Ref. AMM TASK 23-73-47-400-001).
- diconnect the electrical connector 7247VC1 from the DEU mount 2015VU1 (Ref. ASM 23-73/06),
- do a check for a short circuit again.
1 If there is a short circuit:
_
- reconnect the electrical connector to the DEU mount 2015VU1 (Ref. AMM TASK 23-73-48-400-001),
- do the steps 4. B. (7) again for the subsequent DEU(s) and DEU mount(s) until the maintenance message stops: (Ref. ASM 23-73/06) DEU mount 2011VU3, DEU-B (300RH1) and DEU mount 2011VU1,
2 If there is no short circuit:
_
- do a check for a short circuit at the disconnected connector between the pins A/9 and A/10 (Ref. ASM 23-73/06)
a If there is a short circuit:
_
- repaire the wiring between the related DEU mount 2011VUxx and the DEU mount 2015VUxx/2011VUxx (Ref. ASM 23-73/06).
b If there is no short circuit:
_
- install a new DEU mount 2015VU1 (Ref. AMM TASK 23-73-48-400-001).
**ON A/C 301-399,
B. If the CIDS1 Interface and Power-Up Test gives the maintenance message CIDS MID BUS L/ DIR1 (101RH):
- make sure that at least one cabin door is open,
- remove the DIR-CIDS (101RH) (Ref. AMM TASK 23-73-34-000-001),
- close these CBs:
49VU: 157RH COM CIDS/DIR ESS/2,
49VU: 18WH AIR COND/CIDS/SDF/DIR 2 ESS,
120VU: 156RH COM NAV/CIDS/DIR NORM/2,
122VU: 14WH AIR COND/CIDS/SDF/DIR NORM/2,
- wait for approx. 120 s,
- do the CIDS2 Interface and Power-Up Test via the CFDS/MCDU.
(1) If the test is OK:
- install a new DIR-CIDS, 1 (101RH) (Ref. AMM TASK 23-73-34-400-001).
(2) If the fault continues:
- remove the DIR-CIDS, 2 (102RH) (Ref. AMM TASK 23-73-34-000-001).
- during the installation of the DIR-CIDS, 1 (101RH) do not close these CBs: 49VU: 157RH COM CIDS/DIR ESS/2, 49VU: 18WH AIR COND/CIDS/SDF/DIR 2 ESS, 120VU: 156RH COM NAV/CIDS/DIR NORM/2, 122VU: 14WH AIR COND/CIDS/SDF/DIR NORM/2,
- install the DIR-CIDS, 1 (101RH) (Ref. AMM TASK 23-73-34-400-001).
- do the CIDS1 Interface and Power-Up Test through the CFDS/MCDU.
(3) If the CIDS1/CIDS BUS test is OK:
- install a new DIR-CIDS, 2 (102RH) (Ref. AMM TASK 23-73-34-400-001). 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 COMMUNICATIONS 通讯2(102)
