- reconnect the electrical connector to the DEU TERMINATION BOX (209RH2),

 - disconnect the electrical connector from the DEU CONNECTION BOX (208RH2),

 - do a check of the wiring (continuity-check) between: DIR-CIDS (101RH) connector AA/A15 and the connector from the DEU CONNECTION BOX (208RH2) pin A/2, DIR-CIDS (101RH) connector AA/B15 and the connector from the DEU CONNECTION BOX (208RH2) pin A/2.

 1 If there is no continuity:
_
 - repair the wiring between the DIR-CIDS (101RH) and the connector of the DEU CONNECTION BOX (208RH2) (Ref. ASM 23-73/06).
 2 If there is continuity:
_
 - do a check of the wiring (continuity-check) between: DEU CONNECTION BOX (208RH2) pin A/1 and pin A/9 , DEU CONNECTION BOX (208RH2) pin A/2 and pin A/10.
 a If there is no continuity:
_
 - install a new DEU CONNECTION BOX (208RH2) (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 DEU CONNECTION BOX (208RH2).

 - do the steps 4. B. (6) again for the subsequent DEU CONNECTION BOXES until the maintenance message stops: DIR-CIDS (101RH) and DEU CONNECTION BOX (208RH4), DIR-CIDS (101RH) and DEU CONNECTION BOX (208RH8), DIR-CIDS (101RH) and DEU CONNECTION BOX (208RH12), DIR-CIDS (101RH) and DEU CONNECTION BOX (208RH14), DIR-CIDS (101RH) and DEU TERMINATION BOX (209RH2),

 (7) If the resistance (line to line) is less than 80 ohms (short circuit):
 - remove the DEU-A (200RH16) (Ref. AMM TASK 23-73-46-000-001).

 - do a check for a short circuit again.

 「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 A230
 Aug 01/05 CES

 (a) If there is no short circuit:

 - install a new DEU-A (200RH16) (Ref. AMM TASK 23-73-46-400-001).

 (b) If there is a short circuit:

 - install the removed DEU-A (200RH16) (Ref. AMM TASK 23-73-46-400-001).

 - disconnect the electrical connector from the DEU TERMINATION BOX (209RH2) (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 (209RH2),

 - do the steps 4. B. (7) again for the subsequent DEUs and DEU CONNECTION BOXES until the maintenance message stops: (Ref. ASM 23-73/06) DEU-A (200RH14) and DEU CONNECTION BOX (208RH14), 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),

 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:
_
 - repair the wiring between the related DEU CONNECTION BOX 208RHxx and the DEU CONNECTION/ TERMINATION BOX 208/209RHxx (Ref. ASM 23-73/06).
 b 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).
 **ON A/C 151-199,
 B. If the CIDS1/CIDS BUS test gives the maintenance message TOP LINE 1R:
 - 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 (G02) CIDS/DIR 2/ESS,
 121VU:156RH (M07) CIDS/DIR 2/NORM,

 - 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).
 「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, 151-199, 401-499, ∞∞23-73-00∞∞∞∞∞∞∞∞∞∞Page A231
 Aug 01/05 CES

 (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 (G02) CIDS/DIR 2/ESS, 121VU:156RH (M07) CIDS/DIR 2/NORM,

 - install the DIR-CIDS, 1 (101RH) (Ref. AMM TASK 23-73-34-400-001).

 - do the CIDS1/CIDS BUS test through the MCDU/CFDS.

 (3) If the CIDS1/CIDS BUS test is OK:

 - install a new DIR-CIDS, 2 (102RH) (Ref. AMM TASK 23-73-34-400-001).