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 1_  Disconnect the n-th smoke detector of channel 1.
R  NOTE : "n" gives the position of the smoke detector in the____ 
R  loop. At the start of this procedure n refers to the 
R  second lavatory smoke detector, n=2. If there are three 
R  lavatories in the cabin, on the location A, D and E: 
R  The second lavatory smoke detector 4WQ (n=2) is 
R  disconnected to examine the previous detector 1WQ (n-1) 
R  in the loop before 1WQ. 
R  2_  Close the SDCU circuit breakers 11WQ and 12WQ and pause 40 to
R  60 seconds.
 3_ Measure the voltage (DC mode) between pin A and pin B of the
 aircraft-side connector.
 a_  If the highest voltage peak shown on the voltmeter is less
R  than 22 VDC, the smoke detector on the location (n-1) 
R  apparently is defective. Replace the smoke detector.
 b_  If the highest voltage peak shown on the voltmeter is equal
R  to 24+/-2VDC (voltage level pulses between 0VDC and 24VDC), 
R  the smoke detector on the location (n-1) is serviceable.
 4_ Open the SDCU circuit breakers 11WQ and 12WQ.

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-105, 151-199, ∞∞26-17-00∞∞∞∞∞∞∞∞∞∞Page 213
 201-299, May 01/05 CES

 

R  5 Connect the n-th smoke detector to the loop again and_ 
R  disconnect smoke detector on location (n+1). 
R  6 Do the steps (l) 1 to step (l) 5 for each smoke detector that_ 
R  follows to examine each smoke detector. 
R  NOTE : An incorrect voltage measured at the location number n____ 
R  means that the smoke detector on the location (n-1) is 
R  defective. 
R  (m) Close the SDCU circuit breakers 11WQ and 12WQ again and pause for 
R  approximately 80 seconds (SDCU power-up is 20 sec. and SD 
R  initialization is 60 sec.). 
R  (n) Do a check of the "ON GROUND FAULTS" indication. 
R  (5) If the fault continues: 
R  - Do a check and repair if necessary the wiring between the SDCU and 
R  all the connected lavatory and cargo compartment smoke detectors
 (Ref. ASM 26-17/01), (Ref. ASM 26-17/02) and (Ref. ASM 26-17/03). 
R  (6) If the fault continues: 
R  - Do a check and repair the wiring of the related wiring which is 
R  shown in the WIRING REPORT (Ref. ASM 26-17/01), (Ref. ASM 26-17/02)
 and (Ref. ASM 26-17/03).
 E. Do the test given in the 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 214
 201-299, May 01/05 CES

 

 Lavatory Smoke Warning(s) without Fire
 1. Possible Causes
_______________
 - Oil leak of the APU
 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
49-00-00-810-846  Fumes in the Cabin/Oil Smoke at the APU Exhaust (GTCP 36-300) 49-00-00-810-921 Fumes in the Cabin/Oil Smoke at the APU Exhaust (APS 3200) AMM 12-33-21-618-001 Pre-conditioning with the APU
 3. Fault Confirmation
__________________
 A. Do the pre-conditioning with the APU (Ref. AMM TASK 12-33-21-618-001).
 4. Fault Isolation
_______________ R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-210,
 A. If you smell fumes in the cabin during the pre-conditioning with the APU:
 (1) do the trouble shooting procedure for the fumes in the cabin/oil smoke at the APU exhaust (Ref. TASK 49-00-00-810-846).
 NOTE : An Oil leak of the APU causes this fault.
____
 **ON A/C 211-299,

 A. If you smell fumes in the cabin during the pre-conditioning with the APU:
 (1) Do the trouble shooting procedure for the fumes in the cabin/oil smoke at the APU exhaust (Ref. TASK 49-00-00-810-921).
 NOTE : An Oil leak of the APU causes this fault.
____

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-105, 151-199, ∞∞26-17-00∞∞∞∞∞∞∞∞∞∞Page 215
　
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