1. Possible Causes
_______________
 - SDCU (10WQ)

 - aircraft wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 26-17-34-000-001 AMM 26-17-34-400-001 AMM 31-32-00-860-005 ASM 26-17/00 __________________
3. Fault Confirmation
R A. Test:
Removal of the Smoke-Detection Control Unit (SDCU)
 (10WQ)
Installation of the Smoke-Detection Control Unit
 (SDCU) (10WQ)
Procedure to Get Access to the SYSTEM REPORT/TEST
 FIRE PROT Page

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
 4. Fault Isolation
_______________
 A. If the MCDU gives the maintenance message NO FAILURE, no other maintenance action is necessary.
 B. If the MCDU gives the maintenance message SDCU CHANNEL 1 (10WQ)
 - replace the SDCU (10WQ) (Ref. AMM TASK 26-17-34-000-001) (Ref. AMM TASK 26-17-34-400-001).
 (1) If the fault continues:
 - do a check and repair the aircraft wiring from the circuit breaker 11WQ to the SDCU (10WQ) AC/2 (Ref. ASM 26-17/00).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-105, 151-199, ∞∞26-17-00∞∞∞∞∞∞∞∞∞∞Page 223
 201-299, May 01/05 CES 5. Close-up

________
 A. Do the test given in para. 3.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-105, 151-199, ∞∞26-17-00∞∞∞∞∞∞∞∞∞∞Page 224
 201-299, May 01/05 CES

 SDCU Channel 2 (10WQ) Fault
 1. Possible Causes
_______________
 - SDCU (10WQ)

 - aircraft wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 26-17-34-000-001 AMM 26-17-34-400-001 AMM 31-32-00-860-005 ASM 26-17/00 __________________
3. Fault Confirmation
R A. Test:
Removal of the Smoke-Detection Control Unit (SDCU)
 (10WQ)
Installation of the Smoke-Detection Control Unit
 (SDCU) (10WQ)
Procedure to Get Access to the SYSTEM REPORT/TEST
 FIRE PROT Page

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
 4. Fault Isolation
_______________
 A. If the MCDU gives the maintenance message NO FAILURE, no other maintenance action is necessary.
 B. If the MCDU gives the maintenance message SDCU CHANNEL 2 (10WQ)
 - replace the SDCU (10WQ) (Ref. AMM TASK 26-17-34-000-001) (Ref. AMM TASK 26-17-34-400-001).
 (1) If the fault continues:
 - do a check and repair the aircraft wiring from the circuit breaker 12WQ to the SDCU (10WQ) AC/4 (Ref. ASM 26-17/00).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-105, 151-199, ∞∞26-17-00∞∞∞∞∞∞∞∞∞∞Page 225
 201-299, May 01/05 CES

 5. Close-up
________
 A. Do the test given in para. 3.

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-105, 151-199, ∞∞26-17-00∞∞∞∞∞∞∞∞∞∞Page 226
 201-299, May 01/05 CES

R **ON A/C 106-149, 301-399, 401-499,

 TASK 26-17-00-810-815
 Lavatory Smoke-Detector Inoperative
 1. Possible Causes
_______________
 - lavatory smoke detector
 2. Job Set-up Information
　
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