_
 - reconnect the electrical connector to the DEU mount 2015VU2 (Ref. AMM TASK 23-73-48-400-001),

 - do the steps 4. B. (7) again for the subsequent DEU(s) and DEU mount(s) until the maintenance message stops: (Ref. ASM 23-73/06) DEU-B (300RH4) and DEU mount 2011VU4, DEU mount 2011VU2,

 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 2011VUxx and the DEU mount 2015VUxx/2011VUxx (Ref. ASM 23-73/06).
 b If there is no short circuit:
_
 - install a new DEU mount 2015VU2 (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 MID BUS R/ DIR1 (101RH):
 - make sure that at least one cabin door is open,

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

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

 - wait for approx. 120 s,

 - do the CIDS2/CIDS Interface and Power-Up Test via the CFDS/MCDU.

 (1) If the 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, 49VU: 18WH AIR COND/ CIDS/SDF/ DIR 2 ESS, 120VU: 156RH COM NAV/ CIDS/ DIR NORM/ 2, 122VU: 14WH AIR COND/ CIDS/ SDF/ DIR NORM/ 2,

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

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

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

 - install a new DIR-CIDS, 2 (102RH) (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 : 151-199, 301-399, ∞∞23-73-00∞∞∞∞∞∞∞∞∞∞Page A283
 Aug 01/05 CES

 (4) If the fault continues:

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

 - open these CBs:
 49VU: 153RH COM/CIDS/DEU B/ESS
 120VU: 193RH COM NAV/CIDS/DEU B/NORM FWD
 2001VU: 194RH COM NAV/CIDS/DEU B/NORM AFT

 - make sure that the resistance (line to line) at DIR-CIDS (101RH) and (102RH) connector AA/A14 and connector AA/B14 is between approx. 80 and 140 ohms (Ref. ASM 23-73/06).

 (5) If the resistance (line to line) is between approx. 80 and 140 ohms:

 - make sure that the resistance (line to GND) is not less than 7 k ohms (short circuit) between: DIR-CIDS (101RH) and (102RH) connector AA/A14 and GND, DIR-CIDS (101RH) and (102RH) connector AA/B14 and GND. (Ref. ASM 23-73/06)
 (a) If there is no short circuit:
 - remove the DEU-B (300RH6) (Ref. AMM TASK 23-73-47-000-001)

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

 - close these CBs: 49VU: 153RH COM/CIDS/DEU B/ESS 120VU: 193RH COM NAV/CIDS/DEU B/NORM FWD 2001VU: 194RH COM NAV/CIDS/DEU B/NORM AFT

 - do the CIDS Interface and Power-up test via the CFDS/MCDU (Ref. AMM TASK 23-73-00-740-010).

 1 If the CIDS POWER-UP test gives the maintenance message DEU-B
_
 300RH8:

 - install a new DEU-B (300RH8) (Ref. AMM TASK 23-73-47-400-001).
 2 If the CIDS POWER-UP test gives the maintenance message CIDS
_
 MID BUS R/ DIR1 (101RH):

 - install the removed DEU-B (300RH8) (Ref. AMM TASK 23-73-47-400-001).

 - do the steps 4. B. (5) (a) again for the subsequent DEU(s) until the maintenance message stops: (Ref. ASM 23-73/06) DEU-B (300RH6) DEU-B (300RH4)

 (b) If there is a short circuit:
 - remove the DEU-B (300RH8) (Ref. AMM TASK 23-73-47-000-001),

 - do a check for a short circuit again.

 1 If there is no short circuit:
_
 - install a new DEU-B (300RH8) (Ref. AMM TASK 23-73-47-400-001).
 「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 : 301-399, ∞∞23-73-00∞∞∞∞∞∞∞∞∞∞Page A284
 Aug 01/05R CES

 2 If the fault continues:
　
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