「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 : ALL ∞∞23-73-00∞∞∞∞∞∞∞∞∞∞Page A252
 Aug 01/05 CES 3. Fault Confirmation

__________________
 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299,
 A. Test
 (1) Do the CIDS1/CIDS BUS test through the CFDS/MCDU.

 (2) Do the CIDS1/DEU-B test through the CFDS/MCDU.

R **ON A/C 106-149, 301-399, 401-499,
 A. Test
 (1) Do the CIDS Interface and Power-Up Test via the CFDS (Ref. AMM TASK 23-73-00-740-010).
 **ON A/C ALL
 4. Fault Isolation
_______________
 A. If the test gives a different maintenance message, do the trouble shooting procedure related to the maintenance message.
 **ON A/C 001-049, 051-099, 101-105, 201-299,
 B. If the CIDS1/CIDS BUS test gives the maintenance message CIDS MID BUS L:
 - 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: 150RH (G02) CIDS/DIR 1 & 2/ESS,
 121VU:151RH (M05) CIDS/DIR 1 & 2/NORM,

 - wait for approx. 120 s,

 - do the CIDS2/CIDS BUS test through the CFDS/MCDU.

 (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).

 - 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 : ALL ∞∞23-73-00∞∞∞∞∞∞∞∞∞∞Page A253
 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
 121VU: 162RH COM NAV/CIDS/DEU B/NORM

 - make sure that the resistance (line to line) at DIR-CIDS (101RH) and (102RH) connector AA/D14 and connector AA/E14 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/D14 and GND, DIR-CIDS (101RH) and (102RH) connector AA/E14 and GND. (Ref. ASM 23-73/06)
 (a) If there is no short circuit:
 - remove the DEU-B (300RH5) (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 121VU: 162RH COM NAV/CIDS/DEU B/NORM

 - do the CIDS BITE test through the CFDS/MCDU (Ref. AMM TASK 23-73-00-740-005).

 1 If the CIDS BITE test gives the maintenance message DEU-B
_
 300RH5:

 - install a new DEU-B (300RH5) (Ref. AMM TASK 23-73-47-400-001).
 2 If the CIDS BITE test gives the maintenance message CIDS MID
_
 BUS L:

 - install the removed DEU-B (300RH5) (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 (300RH1)

 (b) If there is a short circuit:
 - remove the DEU-B (300RH5) (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 (300RH5) (Ref. AMM TASK 23-73-47-400-001).
 2 If the fault continues:
_
 - disconnect the electrical connector 7247VC1 from the DEU mount 2015VU1 (Ref. AMM TASK 23-73-48-000-001).

 - do a check for a short circuit again.

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : 001-049, 051-099, 101-105, 201-299, ∞∞23-73-00∞∞∞∞∞∞∞∞∞∞Page A254
 Aug 01/05R CES

 a If there is no short circuit:
　
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 COMMUNICATIONS 通訊2(97)