R R R  C. If the test gives the maintenance message WRG:PIN PROG: - Do a check and repair of the PIN PROGRAMMING at the pin B/8D of the SDCU (10WQ) (Ref. ASM 26-17/01). 
R  (1) If the fault continues: - Replace the SDCU (10WQ) (Ref. AMM TASK 26-17-34-000-001) and (Ref. AMM TASK 26-17-34-400-001).
 D. Do the test given in para. 3.
 5. Close-up________
 A. Put the aircraft back to its initial configuration.

 201-299, May 01/05 CES

 SDCU/SMOKE DET LOOP FAULT
 1. Possible Causes
_______________
 - electrical connectors

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 26-17-15-000-001 AMM 26-17-15-400-001 AMM 31-32-00-860-005 ASM 26-16/02 ASM 26-17/02 Removal of the Lavatory Smoke Detector 1WQInstallation of the Lavatory Smoke Detector 1WQProcedure to Get Access to the SYSTEM REPORT/TEST FIRE PROT Page
 3. Fault Confirmation__________________ 
R  A. Test: 

R  (1) - Open the circuit breakers 11WQ and 12WQ 
R  - Wait 20 seconds 
R  - Close the circuit breakers and wait again 1 minute before start of 
R  the next test. 
R  (2) Get access to the MCDU/SDCU menu page (Ref. AMM TASK 31-32-00-
860-005): 
R  - Push the line key adjacent to the <ON GROUND FAULTS indication. 
R  The MCDU shows the fault message. If there is no fault, the MCDU 
R  shows NO FAILURE. 
R
 4. Fault Isolation_______________ 
R  A. If the test gives a different maintenance message: 
R  - Do the trouble shooting procedure related to the maintenance message. 
R
 B. If the test gives the maintenance message TEST OK, no other maintenance
 action is necessary.

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-105, 151-199, ∞∞26-17-00∞∞∞∞∞∞∞∞∞∞Page 221
 201-299, May 01/05 CES

 C. If the test gives the status maintenance message SDCU and the maintenance message SDCU/SMOKE DET LOOP:
 - make sure that the electrical connectors at the SDCU (10WQ) and the related first connected smoke detectors are correct installed (Ref. ASM 26-17/02).
 (1) If the fault continues:
 - do a read-out of the TROUBLE SHOOTING DATA (TSD). The TSD shows the number of smoke detectors (SD) installed on the smoke detection loop, e.g. xxxx xxxx xxxx xxxx A/B. The Customer Layout specifies the number of SD's. If no fault is detected A=B.
 NOTE : A is the number of SD's counted clockwise from the SDCU
____ Channel 1. B is the number of SD's conted counterclockwise from the SDCU Channel 2.
 (a) If the TSD gives the complementary information xxxx xxxx xxxx xxxx 0/B:
 - replace the first SD (Ref. AMM TASK 26-17-15-000-001) (Ref. AMM TASK 26-17-15-400-001) counted clockwise from SDCU Channel 1.
 1 If the fault continues:
_

 - do a check and repair the wiring if necessary between the SDCU (10WQ) and the related first lavatory smoke detector (XWQ): SDCU (10WQ) connector AA/1A and the first smoke detector (XWQ) connector A/A, SDCU (10WQ) connector AA/1B and the first smoke detector (XWQ) connector A/B (Ref. ASM 26-17/02).
 (b) If the TSD gives the complementary information xxxx xxxx xxxx xxxx A/0:
 - replace the first SD (Ref. AMM TASK 26-17-15-000-001) (Ref. AMM TASK 26-17-15-400-001) counted counterclockwise from SDCU Channel 2.
 1 If the fault continues:
_

 - do a check and repair the wiring if necessary between the SDCU (10WQ) and the related first cargo smoke detector (XWH): SDCU (10WQ) connector AB/1C and the first smoke detector (XWH) connector A/G, SDCU (10WQ) connector AB/1B and the first smoke detector (XWH) connector A/F (Ref. ASM 26-16/02).
 D. Do the test given in para. 3.
 5. Close-up
________
 A. Put the aircraft back to its initial configuration.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-105, 151-199, ∞∞26-17-00∞∞∞∞∞∞∞∞∞∞Page 222
　
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 FIRE PROTECTION 防火(89)