R (5) If the resistance (line to line) is between approx. 80 and 120 ohms:
R - make sure that the resistance (line to GND) is not less than 200
R ohms (short circuit) between:
R DIR-CIDS, 1 (101RH) and DIR-CIDS, 2 (102RH) connector AA/D15 and
R GND,
R DIR-CIDS, 1 (101RH) and DIR-CIDS, 2 (102RH) connector AA/E15 and
R GND. (Ref. ASM 23-73/06)

R (a) If there is no short circuit:
R - remove the DEU-A (200RH15) (Ref. AMM TASK 23-73-46-000-001)
R - install the DIR-CIDS, 1 (101RH) and DIR-CIDS, 2 (102RH) (Ref.
R AMM TASK 23-73-34-400-001).
R - close these CBs:
R 49VU: 154RH COM NAV/CIDS/DEU A ESS/LINE 1
R 49VU: 155RH COM NAV/CIDS/DEU A ESS/LINE 2
R 120VU: 163RH COM NAV/CIDS/DEU A NORM/L FWD
R 120VU: 167RH COM NAV/CIDS/DEU A NORM/L AFT
R - do the CIDS Interface and Power-Up Test via the MCDU/CFDS (Ref.
R AMM TASK 23-73-00-740-010).

R 1_ If the CIDS Interface and Power-UP Test gives the maintenance
R message DEU-A (200RH15):
R - install a new DEU-A (200RH15) (Ref. AMM TASK 23-73-46-400-R 001).

R 2_ If the CIDS Interface and Power-Up Test gives the maintenance
R message CIDS TOP BUS 1L/DIR1
R - (101RH) install the removed DEU-A (200RH15) (Ref. AMM TASK
R 23-73-46-400-001).
R - do the steps 4. B. (5) (a) again for the subsequent DEUs
R until the maintenance message stops: (Ref. ASM 23-73/06)
R DEU-A (200RH13)
R DEU-A (200RH7)
R DEU-A (200RH3)
R DEU-A (200RH1)

R (b) If there is a short circuit:
R - remove the DEU-A (200RH15) (Ref. AMM TASK 23-73-46-000-001)
R - do a check for a short circuit again.

R 1_ If there is no short circuit:
R - install a new DEU-A (200RH15) (Ref. AMM TASK 23-73-46-400-R 001).

R 2_ If the fault continues:
R - disconnect the electrical connector from the DEU TERMINATION
R BOX (209RH1) (Ref. ASM 23-73/06).
R - do a check for a short circuit again.

R a_ If there is no short circuit:
R - replace the DEU TERMINATION BOX (209RH1) (Ref. AMM TASK
R 23-73-43-000-001) (Ref. AMM TASK 23-73-43-400-001)

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 401-499, ∞∞23-73-00∞∞∞∞∞∞∞∞∞∞Page A205
 Aug 01/05 CES

R b_ If the fault continues:
R - remove the DEU-A (200RH13) (Ref. AMM TASK 23-73-46-000-R 001)
R - do a check for a short circuit again.
R
R - b.1. If there is no short circuit:
R - install a new DEU-A (200RH13) (Ref. AMM TASK 23-73-46-R 400-001).
R
R - b.2. If the fault continues:
R - install the removed DEU-A (200RH15) (Ref. AMM TASK 23-73-R 46-400-001),
R - reconnect the electrical connector to the DEU TERMINATION
R BOX (209RH1)
R - disconnect the electrical connector from the DEU
R CONNECTION BOX (208RH13) (Ref. ASM 23-73/06),
R - do a check for a short circuit again.
R
R - b.2.1. If there is no short circuit:
R - do a check for a short circuit at the connector between
R pin 9 and GND (pin 4) and between pin 10 and GND (pin 4).
R
R - b.2.1.1. If there is a short circuit:
R - repair the wiring between the DEU CONNECTION BOX
R (208RH13) and the DEU TERMINATION BOX (209RH1) (Ref. ASM
R 23-73/06).
R
R - b.2.1.2. If there is no short circuit:
R - replace the DEU CONNECTION BOX (208RH13) (Ref. AMM TASK
R 23-73-42-000-001) and (Ref. AMM TASK 23-73-42-400-001).
R
R - b.2.2. If there is a short circuit:
R - install the removed DEU-A (200RH13) (Ref. AMM TASK 23-73-R 46-400-001),
R - reconnect the electrical connector to the DEU CONNECTION
R BOX (208RH13) (Ref. ASM 23-73/06),
R - do the steps (4. B. (5) (b) 2 b) again for the subsequent
R DEUs and connection boxes until the maintenance message
R stops: (Ref. ASM 23-73/06)
R DEU-A (200RH7) and DEU CONNECTION BOX (208RH7),
R DEU-A (200RH3) and DEU CONNECTION BOX (208RH3),
R DEU-A (200RH1) and DEU CONNECTION BOX (208RH1).

R (6) If the resistance (line to line) is more than 120 ohms (open
R circuit):
R - disconnect the electrical connector from the DEU TERMINATION BOX
R (209RH1) (Ref. ASM 23-73/06).
R - make sure that the resistance (line to line) is not more than 120
R ohms (open circuit) between:
R DEU TERMINATION BOX (209RH1) pin A/1 and pin A/2

 「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 : 401-499, ∞∞23-73-00∞∞∞∞∞∞∞∞∞∞Page A206
 Aug 01/05 CES

　
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