- make sure that the resistance (line to line) is not more than 200 ohms (open circuit) between: DEU mount 2014VU4 pin A/1 and pin A/2

 (a) If there is an open circuit:

 - install a new DEU mount 2014VU4 (Ref. AMM TASK 23-73-48-400-001)

 (b) If there is no open circuit:

 - reconnect the electrical connector to the DEU mount 2014VU4 (Ref. AMM TASK 23-73-48-400-001)

 - disconnect the electrical connector 7213VC4 from the DEU mount 2010VU4 (Ref. AMM TASK 23-73-48-000-001),

 - do a check of the wiring (continuity-check) between: DIR-CIDS (101RH) connector AA/A15 and the connector 7213VC4 pin A/1, DIR-CIDS (101RH) connector AA/B15 and the connector 7213VC4 pin A/2.

 1 If there is no continuity:
_
 - repair the wiring between the DIR-CIDS (101RH) and the connector 7213VC4 (Ref. ASM 23-73/06).
 2 If there is continuity:
_
 - do a check of the wiring (continuity-check) between: DEU mount 2010VU4 pin A/1 and pin A/9 , DEU mount 2010VU4 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 A234
 Aug 01/05 CES a If there is no continuity:

_
 - install a new DEU mount 2010VU4 (Ref. AMM TASK 23-73-48-000-001) and (Ref. AMM TASK 23-73-48-400-001)
 b If there is continuity:
_
 - reconnect the connector 7213VC4 to the DEU mount 2010VU4 (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 2010VU8/connector 7213VC8, DIR-CIDS (101RH) and DEU mount 2010VU12/connector 7213VC12, DIR-CIDS (101RH) and DEU mount 2010VU18/connector 7213VC18, DIR-CIDS (101RH) and DEU mount 2010VU22/connector 7213VC22, DIR-CIDS (101RH) and DEU mount 2014VU4/connector 7253VC4.

 (7) If the resistance (line to line) is less than 80 ohms (short circuit):
 - remove the DEU-A (200RH26) (Ref. AMM TASK 23-73-46-000-001).

 - do a check for a short circuit again.

 (a) If there is no short circuit:

 - install a new DEU-A (200RH26) (Ref. AMM TASK 23-73-46-400-001).

 (b) If there is a short circuit:

 - install the removed DEU-A (200RH26) (Ref. AMM TASK 23-73-46-400-001).

 - diconnect the electrical connector 7253VC4 from the DEU mount 2014VU4 (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 2014VU4 (Ref. AMM TASK 23-73-48-400-001),

 - do the steps 4. B. (7) again for the subsequent DEUs and DEU mounts until the maintenance message stops: (Ref. ASM 23-73/06) DEU-A (200RH22) and DEU mount 2010VU22, DEU-A (200RH18) and DEU mount 2010VU18, DEU-A (200RH12) and DEU mount 2010VU12, DEU-A (200RH8) and DEU mount 2010VU8, DEU-A (200RH4) and DEU mount 2010VU4.

 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 2010VUxx and the DEU mount 2014VUxx/2010VUxx (Ref. ASM 23-73/06).
 「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 A235
 Aug 01/05 CES

 b_ If there is no short circuit:
 - install a new DEU mount 2014VU4 (Ref. AMM TASK 23-73-48-
400-001).
 **ON A/C 301-399,

 B. If the CIDS1/CIDS BUS test gives the maintenance message CIDS TOP BUS 1R/ DIR1 (101RH)
 - remove the DIR-CIDS (101RH) (Ref. AMM TASK 23-73-34-000-001),

 - make sure that at least one cabin door is open,

 - close these CBs: 49VU: 157RH COM/CIDS/DIR ESS/2, 120VU: 156RH COM NAV/CIDS/DIR NORM /2, 122VU: 14WH AIR COND/CIDS/SDF/DIR NORM/2, 49VU: 18WH AIR COND/CIDS/SDF/DIR 2 ESS,

 - wait for approx. 120 s,

 - do the CIDS2/CIDS BUS test through the MCDU/CFDS.

 (1) If the CIDS2/CIDS BUS 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, 120VU: 156RH COM NAV/CIDS/DIR NORM /2, 122VU: 14WH AIR COND/CIDS/SDF/DIR NORM/2, 49VU: 18WH AIR COND/CIDS/SDF/DIR 2 ESS,
　
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 COMMUNICATIONS 通訊2(89)