Compartment
 AMM 31-50-00-710-001 Ground Scanning of the Central Warning System
 ASM 21-26/03
 AWM 21-26-06
 AWM 21-26-08
 AWM 26-15-01

 3. Fault Confirmation
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 A. Test
 (1) Do the operational test of the avionics equipment ventilation from the Multipurpose Control and Display Unit (MCDU) (Ref. AMM TASK 21-26-00-710-001).
 4. Fault Isolation
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 A. Table of the circuit breakers used in this procedure:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR COND/AVNCS VENT/CTL 5HQ D05
 「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 : ALL ∞∞21-26-00∞∞∞∞∞∞∞∞∞∞Page 242
 May 01/05R CES

 B. If the test gives the maintenance message SMOKE DETECTOR 1WA:
 - do a check of the status of the circuit breaker (5HQ).
 (1) If the circuit breaker (5HQ) is closed:
 - do a check for a ground signal at pin AB/7D of the AEVC (10HQ) (Ref. ASM 21-26/03).
 (a) If there is a ground signal:
 - do a check for 28VDC at pin A/X1 of the smoke warning relay (2WA) (Ref. AWM 26-15-01).
 1 If there is 28VDC:
_
 - replace the DET-SMOKE, AVNCS COMPT (1WA) (Ref. AMM TASK 26-15-15-000-001) and (Ref. AMM TASK 26-15-15-400-001).
 2 If there is no 28VDC:
_
 - replace the RELAY-SMOKE WARNING, AVNCS COMPT (2WA)
 a If the fault continues:
_
 - do a check and repair the wiring between the smoke warning relay (2WA) and the AEVC (10HQ), pin A/A1 and pin AB/7D (Ref. ASM 21-26/03) (Ref. AWM 26-15-01) (Ref. AWM 21-26-06).
 b If the fault continues:
_
 - replace the AEVC (10HQ) (Ref. AMM TASK 21-26-34-000-001) and (Ref. AMM TASK 21-26-34-400-001).
 (b) If there is no ground signal:
 - do a check for a ground signal at pin A/A2 of the smoke warning relay (2WA).
 1 If there is a ground signal:
_
 - do a check for 28VDC at pin A/X1 of the smoke warning relay (2WA).
 a If there is 28VDC:
_
 - replace the RELAY-SMOKE WARNING, AVNCS COMPT (2WA). . If the fault continues:
 * do a check and repair the wiring between the smoke warning relay (2WA) and to the smoke detector (1WA), pin A/X1 and pin A/D (Ref. ASM 21-26/03) (Ref. AWM 26-15-01).
 b If there is no 28VDC:
_
 - do a check for 28VDC at pin A/A of the smoke detector (1WA).
 . If there is 28VDC:
 * replace the DET-SMOKE, AVNCS COMPT (1WA) (Ref. AMM TASK 26-15-15-000-001) and (Ref. AMM TASK 26-15-15-400-001).
 . If there is no 28VDC:
 「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 : ALL ∞∞21-26-00∞∞∞∞∞∞∞∞∞∞Page 243
 May 01/05R CES

 * replace the C/B-AIR COND AVNCS VENT/CTL (5HQ).
 ** If the fault continues: *** do a check and repair the wiring between pin A/A of the smoke detector (1WA) and the circuit breaker (5HQ (Ref. ASM 21-26/03) (Ref. AWM 21-26-08) (Ref. AWM 26-15-01).
 C. Do the operational test given in Para. 3.
 D. Table of the circuit breakers used in this procedure:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU FWS/FWC1/SPLY 3WW F01 121VU EIS/FWC2/SPLY 2WW Q07
 E. Test
 (1) Reset of the FWC1 and FWC2 NOTE : Open the circuit breakers for some seconds before you close
____
 them.

 (a) Open this(these) circuit breaker(s):
 1 2WW

_
 2 3WW

_
 (b) Close this(these) circuit breaker(s):
 1 2WW

_
 2 3WW

_
 (2) Do the ground scanning of the central warning system (Ref. AMM TASK 31-50-00-710-001).
 「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 : ALL ∞∞21-26-00∞∞∞∞∞∞∞∞∞∞Page 244
 May 01/05R
 CES

 TASK 21-26-00-810-812

 AVIONICS SYSTEM FAULT ECAM Warning Unwanted or Inoperative
 1. Possible Causes
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 - AEVC (10HQ)

 - SDAC-1 (1WV1)

 - SDAC-2 (1WV2)

 - CARTRIDGE-AVNCS VENT FILTER (2082HM)