- remove the DEU-A (200RH26) (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).
- 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
_
200RH26:
- install a new DEU-A (200RH26) (Ref. AMM TASK 23-73-46-400-001).
2 If the CIDS BITE test gives the maintenance message CIDS TOP
_
LINE 2 R:
- install the removed DEU-A (200RH26) (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 (200RH22) DEU-A (200RH18) DEU-A (200RH14) DEU-A (200RH10) DEU-A (200RH6) DEU-A (200RH2)
(b) If there is a short circuit:
- remove the DEU-A (200RH26) (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 (200RH26) (Ref. AMM TASK 23-73-46-400-001).
2 If the fault continues:
_
- disconnect the electrical connector 7253VC4 from the DEU mount 2014VU4 (Ref. AMM TASK 23-73-48-000-001).
- do a check for a short circuit again.
a If there is no short circuit:
_
- install a new DEU mount 2014VU4 (Ref. AMM TASK 23-73-48-000-001) and (Ref. AMM TASK 23-73-48-400-001).
b If the fault continues:
_
- remove the DEU-A (200RH22) (Ref. AMM TASK 23-73-46-000-001)
- do a check for a short circuit again.
- b.1. If there is no short circuit:
- install a new DEU-A (200RH22) (Ref. AMM TASK 23-73-46-400-001).
- b.2. If the fault continues:
「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 : 001-049, 051-099, 101-105, 201-299, ∞∞23-73-00∞∞∞∞∞∞∞∞∞∞Page A244
Aug 01/05R CES
- install the removed DEU-A (200RH26) (Ref. AMM TASK 23-73-46-400-001),
- reconnect the electrical connector to the DEU mount 2014VU4 (Ref. AMM TASK 23-73-48-400-001),
- disconnect the electrical connector 7213VC22 from the DEU mount 2010VU22 (Ref. AMM TASK 23-73-48-000-001),
- do a check for a short circuit again.
- b.2.1. If there is no short circuit:
- do a check for a short circuit at the connector 7213VC22 between pin 9 and GND (pin 11) and between pin 10 and GND (pin 11).
- b.2.1.1. If there is a short circuit:
- repair the wiring between the DEU mount 2010VU22 and the DEU mount 2014VU4 (Ref. ASM 23-73/06).
- b.2.1.2. If there is no short circuit:
- install a new DEU mount 2010VU22 (Ref. AMM TASK 23-73-48-400-001).
- b.2.2. If there is a short circuit:
- install the removed DEU-A (200RH22) (Ref. AMM TASK 23-73-46-400-001),
- reconnect the electrical connector to the DEU mount 2010VU22 (Ref. AMM TASK 23-73-48-400-001),
- do the steps (4. B. (5) (b) 2 b) again for the subsequent DEUs and DEU mounts until the maintenance message stops: (Ref. ASM 23-73/06) DEU-A (200RH18) and DEU mount 2010VU18, DEU-A (200RH14) and DEU mount 2010VU14, DEU-A (200RH10) and DEU mount 2010VU10, DEU-A (200RH6) and DEU mount 2010VU6, DEU-A (200RH2) and DEU mount 2010VU2.
(6) If the resistance (line to line) is more than 200 ohms (open circuit):
- disconnect the electrical connector 7253VC4 from the DEU mount 2014VU4 (Ref. AMM TASK 23-73-48-000-001),
- make sure that the resistance (line to line) is not more than 200 ohms (open circuit) between: DEU mount 2014VU4 pin A/1 and pin A/2
(a) If there is an open circuit:
- install a new DEU mount 2014VU4 (Ref. AMM TASK 23-73-48-400-001)
(b) If there is no open circuit:
- reconnect the electrical connector to the DEU mount 2014VU4 (Ref. AMM TASK 23-73-48-400-001)
- disconnect the electrical connector 7213VC2 from the DEU mount 2010VU2 (Ref. AMM TASK 23-73-48-000-001),
「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 : 001-049, 051-099, 101-105, 201-299, ∞∞23-73-00∞∞∞∞∞∞∞∞∞∞Page A245
Aug 01/05 CES
- do a check of the wiring (continuity-check) between: DIR-CIDS (101RH) connector AA/F15 and the connector 7213VC2 pin A/1, DIR-CIDS (101RH) connector AA/G15 and the connector 7213VC2 pin A/2.
1 If there is no continuity:
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本文链接地址：A320 Trouble Shooting Manual 排故手册 COMMUNICATIONS 通讯2(93)
