- 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 (200RH13) and DEU CONNECTION BOX (208RH13), DEU-A (200RH11) and DEU CONNECTION BOX (208RH11), DEU-A (200RH7) and DEU CONNECTION BOX (208RH7). DEU-A (200RH3) and DEU CONNECTION BOX (208RH3), DEU-A (200RH1) and DEU CONNECTION BOX (208RH1),

 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 CONNECTION BOX (208RHxx) and the DEU TERMINATION BOX (209RH1) CONNECTION BOX (208RHxx) (Ref. ASM 23-73/06).
 b If there is no short circuit:
_
 - replace the DEU TERMINATION BOX (209RH1) (Ref. AMM TASK 23-73-43-000-001) and (Ref. AMM TASK 23-73-43-400-001).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : 106-149, ∞∞23-73-00∞∞∞∞∞∞∞∞∞∞Page 294
 Aug 01/05R CES

 **ON A/C 151-199,
 B. If the CIDS1/CIDS BUS test gives the maintenance message TOP LINE 1L:
 - 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).

 (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).

 (4) If the fault continues:

 - remove the DIR-CIDS, 1 (101RH) (Ref. AMM TASK 23-73-34-000-001)

 - open these CBs: 49VU: 154RH COM/CIDS/DEU A ESS/LINE 1 49VU: 155RH COM/CIDS/DEU A ESS/LINE 2 121VU: 167RH COM NAV/CIDS/DEU A NORM/L AFT 121VU: 165RH COM NAV/CIDS/DEU A NORM/L MID 121VU: 163RH COM NAV/CIDS/DEU A NORM/L FWD

 - make sure that the resistance (line to line) at DIR-CIDS (101RH) and (102RH) connector AA/D15 and connector AA/E15 is between approx. 80 and 200 ohms (Ref. ASM 23-73/06).

 (5) If the resistance (line to line) is between approx. 80 and 200 ohms:

 - make sure that the resistance (line to GND) is not less than 50 ohms (short circuit) between: DIR-CIDS (101RH) and (102RH) connector AA/D15 and GND, DIR-CIDS (101RH) and (102RH) connector AA/E15 and GND. (Ref. ASM 23-73/06)
 (a) If there is no short circuit:
 - remove the DEU-A (200RH23) (Ref. AMM TASK 23-73-46-000-001)

 - install the DIR-CIDS (101RH) and DIR-CIDS (102RH) (Ref. AMM TASK 23-73-34-400-001).

 - close these CBs: 49VU: 154RH COM/CIDS/DEU A ESS/LINE 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 : 151-199, ∞∞23-73-00∞∞∞∞∞∞∞∞∞∞Page 295
 Aug 01/05 CES 49VU: 155RH COM/CIDS/DEU A ESS/LINE 2 121VU: 167RH COM NAV/CIDS/DEU A NORM/L AFT 121VU: 165RH COM NAV/CIDS/DEU A NORM/L MID 121VU: 163RH COM NAV/CIDS/DEU A NORM/L FWD

 - do the CIDS BITE test through the MCDU/CFDS (Ref. AMM TASK 23-73-00-740-005).
 1 If the CIDS BITE test gives the maintenance message DEU-A
_
 200RH23:

 - install a new DEU-A (200RH23) (Ref. AMM TASK 23-73-46-400-001).
 2 If the CIDS BITE test gives the maintenance message CIDS TOP
_
 LINE 1 L:

 - install the removed DEU-A (200RH23) (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 (200RH19) DEU-A (200RH13) DEU-A (200RH9) DEU-A (200RH5) DEU-A (200RH1)

 (b) If there is a short circuit:
 - remove the DEU-A (200RH23) (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 (200RH23) (Ref. AMM TASK 23-73-46-400-001).
 2 If the fault continues:
　
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