- b.1.1. If there is a short circuit:
- repair the wiring between the DEU CONNECTION BOX (308RH5) and the DEU TERMINATION BOX (309RH1) (Ref. ASM 23-73/06).
- b.1.2. If there is no short circuit:
- install a new DEU CONNECTION BOX (308RH5) (Ref. AMM TASK 23-73-42-000-001) and (Ref. AMM TASK 23-73-42-400-001).
- b.2. If there is a short circuit:
- reconnect the electrical connector to the DEU CONNECTION BOX (308RH5),
- do the steps (4. B. (5) (b) 2 b) again for the subsequent DEU(s) and DEU CONNECTION BOX(es) until the maintenance message stops for: DEU-B (300RH1) and DEU CONNECTION BOX (308RH1).
(6) If the resistance (line to line) is more than 140 ohms (open circuit):
- disconnect the electrical connector DEU TERMINATION BOX (309RH1) (Ref. ASM 23-73/06),
- make sure that the resistance (line to line) is not more than 140 ohms (open circuit) between: DEU TERMINATION BOX (309RH1) pin A/1 and pin A/2
(a) If there is an open circuit:
- install a new DEU TERMINATION BOX (309RH1) (Ref. AMM TASK 23-73-43-000-001) and (Ref. AMM TASK 23-73-43-400-001).
(b) If there is no open circuit:
- reconnect the electrical connector to the DEU TERMINATION BOX (309RH1).
- disconnect the electrical connector from the DEU CONNECTION BOX (308RH1) (Ref. ASM 23-73/06).
- do a check of the wiring (continuity-check) between: DIR-CIDS (101RH) connector AA/D14 and the DEU CONNECTION BOX (308RH1) connector pin A/2, DIR-CIDS (101RH) connector AA/E14 and the DEU CONNECTION BOX (308RH1) connector pin A/1.
「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 A259
Aug 01/05 CES 1 If there is no continuity:
_
- repair the wiring between the DIR-CIDS (101RH) and the connector DEU CONNECTION BOX (308RH1) (Ref. ASM 23-73/06).
2 If there is continuity:
_
- do a check of the wiring (continuity-check) between: DEU CONNECTION BOX (308RH1) pin A/1 and pin A/9 , DEU CONNECTION BOX (308RH1) pin A/2 and pin A/10.
a If there is no continuity:
_
- install a new DEU CONNECTION BOX (308RH1) (Ref. AMM TASK 23-73-42-000-001) and (Ref. AMM TASK 23-73-42-400-001).
b If there is continuity:
_
- reconnect the connector to the DEU CONNECTION BOX (308RH1).
- do the steps 4. B. (6) again for the subsequent DEU CONNECTION/ TERMINATION BOX(es) until the maintenance message stops: DIR-CIDS (101RH) and DEU CONNECTION BOX (308RH5), DIR-CIDS (101RH) and DEU TERMINATION BOX (309RH1).
(7) If the resistance (line to line) is less than 80 ohms (short circuit):
- remove the DECODER/ENCODER UNIT B (300RH7) (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 DECODER/ENCODER UNIT B (300RH7) (Ref. AMM TASK 23-73-47-400-001).
(b) If there is a short circuit:
- install the removed DECODER/ENCODER UNIT B (300RH7) (Ref. AMM TASK 23-73-47-400-001).
- diconnect the electrical connector from the DEU TERMINATION BOX (309RH1) (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 TERMINATION BOX (309RH1),
- do the steps 4. B. (7) again for the subsequent DEU(s) and DEU CONNECTION/ TERMINATION BOX(es) until the maintenance message stops for: (Ref. ASM 23-73/06) DEU CONNECTION BOX (308RH5), DEU-B (300RH1) and DEU CONNECTION BOX (308RH1),
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)
「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 A260
Aug 01/05 CES a If there is a short circuit:
_
- repaire the wiring between the related DEU CONNECTION BOX 308RHxx and the DEU CONNECTION/ TERMINATION BOX(es) 308RHxx/309RHxx (Ref. ASM 23-73/06).
b If there is no short circuit:
_
- install a new DEU TERMINATION BOX (309RH1) (Ref. AMM TASK 23-73-48-400-001).
**ON A/C 151-199,
B. If the CIDS1/CIDS BUS test gives the maintenance message CIDS MID BUS L:
- make sure that at least one cabin door is open,
- remove the DIR-CIDS (101RH) (Ref. AMM TASK 23-73-34-000-001), 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 COMMUNICATIONS 通訊2(100)
