- install the DIR-CIDS (101RH) and DIR-CIDS (102RH) (Ref. AMM TASK 23-73-34-400-001).
- close these CBs: 49VU: 158RH COM/CIDS/DEU A ESS/FWD R 49VU: 172RH COM/CIDS/DEU A ESS/AFT R 121VU: 164RH COM NAV/CIDS/DEU A NORM/R FWD 121VU: 168RH COM NAV/CIDS/DEU A NORM/R AFT
- do the CIDS Interface and POWER-Up test through the MCDU/CFDS (Ref. AMM TASK 23-73-00-740-010).
1 If the CIDS POWER-UP test gives the maintenance message DEU-A
_
200RH16:
- install a new DEU-A (200RH16) (Ref. AMM TASK 23-73-46-400-001).
2 If the CIDS POWER-UP test gives the maintenance message CIDS
_
TOP BUS 1R/ DIR1 (101RH):
- install the removed DEU-A (200RH16) (Ref. AMM TASK 23-73-46-400-001).
- do the steps 4. B. (5) (a) again for the subsequent DEUs until the maintenance message stops: (Ref. ASM 23-73/06) DEU-A (200RH14) DEU-A (200RH12) DEU-A (200RH8) DEU-A (200RH4) DEU-A (200RH2)
(b) If there is a short circuit:
- remove the DEU-A (200RH16) (Ref. AMM TASK 23-73-46-000-001)
- do a check for a short circuit again.
1 If there is no short circuit:
_
- install a new DEU-A (200RH16) (Ref. AMM TASK 23-73-46-400-001).
2 If the fault continues:
_
- disconnect the electrical connector from the DEU TERMINATION BOX (209RH2) (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 : 106-149, 401-499, ∞∞23-73-00∞∞∞∞∞∞∞∞∞∞Page A228
Aug 01/05 CES - do a check for a short circuit again.
a If there is no short circuit:
_
- install a new DEU TERMINATION BOX (209RH2) (Ref. AMM TASK 23-73-43-000-001) and (Ref. AMM TASK 23-73-43-400-001).
b If the fault continues:
_
- remove the DEU-A (200RH14) (Ref. AMM TASK 23-73-46-000-001)
- do a check for a short circuit again.
- b.1. If there is no short circuit:
- install a new DEU-A (200RH14) (Ref. AMM TASK 23-73-46-400-001).
- b.2. If the fault continues:
- install the removed DEU-A (200RH14) (Ref. AMM TASK 23-73-46-400-001),
- reconnect the electrical connector to the DEU TERMINATION BOX (209RH2),
- disconnect the electrical connector from the DEU CONNECTION BOX (208RH14) (Ref. ASM 23-73/06).
- do a check for a short circuit again.
- b.2.1. If there is no short circuit:
- do a check for a short circuit at the connector between pin 9 and GND (pin 11) and between pin 10 and GND (pin 11).
- b.2.1.1. If there is a short circuit:
- repair the wiring between the DEU CONNECTION BOX (208RH14) and the DEU TERMINATIONBOX (209RH2) (Ref. ASM 23-73/06).
- b.2.1.2. If there is no short circuit:
- install a new DEU CONNECTION BOX (208RH14) (Ref. AMM TASK 23-73-42-000-001) and (Ref. AMM TASK 23-73-42-400-001).
- b.2.2. If there is a short circuit:
- install the removed DEU-A (200RH14) (Ref. AMM TASK 23-73-46-400-001),
- reconnect the electrical connector to the DEU CONNECTION BOX (208RH14)
- do the steps (4. B. (5) (b) 2 b) again for the subsequent DEUs and DEU CONNECTION BOXES until the maintenance message stops: (Ref. ASM 23-73/06) DEU-A (200RH12) and DEU CONNECTION BOX (208RH12), DEU-A (200RH8) and DEU CONNECTION BOX (208RH8), DEU-A (200RH4) and DEU CONNECTION BOX (208RH4), DEU-A (200RH2) and DEU CONNECTION BOX (208RH2),
「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, 401-499, ∞∞23-73-00∞∞∞∞∞∞∞∞∞∞Page A229
Aug 01/05 CES
(6) If the resistance (line to line) is more than 120 ohms (open circuit):
- disconnect the electrical connector from the DEU TERMINATION BOX (209RH2),
- make sure that the resistance (line to line) is not more than 120 ohms (open circuit) between: DEU TERMINATION BOX (209RH2) pin A/1 and pin A/2
(a) If there is an open circuit:
- install a new DEU TERMINATION BOX (209RH2) (Ref. AMM TASK 23-73-43-000-001) and (Ref. AMM TASK 23-73-43-400-001).
(b) If there is no open circuit: 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(86)
