-
a chime from all cabin loudspeakers or from the attendant station loudspeakers,

 -
a pink flashing indicator light and a steady text on all Attendant Indication Panels (AIP),

 -
an amber flashing light on the related Area Call Panel (ACP),

 -
an amber flashing call light on the related lavatory wall,

 -a red indication SMOKE DETECTED on the Flight Attendant Panel (FAP) together with a location information of the smoke alarm.
R 1EFF : 062-099, 106-149, 151-199, 201-299, 1 26-17-00Page 13 1301-399, 401-499, 1Aug 01/05 1 1 1CES 1 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299,

 4. Operation
_________
 **ON A/C 001-049, 051-061, 101-105,
 (Ref. Fig. 004)
 **ON A/C 062-099, 151-199, 201-299,
 (Ref. Fig. 004A)
 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299,
 A. Smoke Condition Smoke that enters the measurement chamber of the smoke detector, gives a warning signal to the SDCU. The SDCU transmits the signal to the CIDS and FWC via data buses. The CIDS directors send the signal to the FAP (Forward Attendant Panel) , AIP (Attendant Indication Panel) and ACP (Area Call Panel). The aural and visual warning reset switch on the FAP stops the warning indications on the ACP and AIP. You cannot switch off the smoke indication on the FAP. This indication goes off, when the density of the smoke drops below the threshold of the respective smoke detector.
 B. Failure Condition The SDCU continuously monitors all components of the system. When the SDCU detects a failure on any smoke detector, the faulty detector is automatically isolated in the bus system. The failure is signalled to the CIDS, FWC and CFDS. The CIDS director signals the fault message to the Programming and Test Panel (PTP) in the cabin. The FWC initiates a fault indication on the ECAM upper display unit. If one of the two SDCU channels fail, an automatic fault-indication is displayed on the ECAM upper display unit.
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 26-17-00Page 14 1201-299, 1Aug 01/05 1 1 1CES 1

 Lavatory Smoke Detection - Schematic
 Figure 004

R 1EFF : 001-049, 051-061, 101-105, 1 26-17-00Page 15 1 1 Aug 01/05 1 1 1CES 1

 Lavatory Smoke Detection - Schematic
 Figure 004A

R 1EFF : 062-099, 151-199, 201-299, 1 26-17-00Page 16 1 1 Aug 01/05 1 1 1CES 1R **ON A/C 106-149, 301-399, 401-499,

 4. Operation
_________
 (Ref. Fig. 004B)

 A. Smoke Condition Smoke that enters the measurement chamber of the smoke detector, gives a warning signal to the DEU B. The DEU B transmits the signal to the CIDS and FWC via data buses. The CIDS directors send the signal to the FAP (Flight Attendant Panel), AIP (Attendant Indication Panel) and ACP (Area Call Panel). The aural and visual warning reset switch on the FAP stops the warning indications on the ACP and AIP. You cannot switch off the smoke indication on the FAP. This indication goes off, when the density of the smoke drops below the threshold of the relative smoke detector.
 B. Failure Condition The CIDS-SDF continuously monitors all components of the system. When the CIDS-SDF detects a failure on any smoke detector, the faulty detector is automatically isolated in the bus system. The failure is signalled to the CIDS, FWC and CFDS. The FWC initiates a fault indication on the ECAM upper display unit. If one of the two CIDS-SDF channels fails, a status/maintenance message is shown on the upper ECAM display. If both CIDS-SDF channels fail an automatic fault-indication is displayed on the ECAM upper display unit.
 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299,
 5. SDCU Power-up Test
__________________
 A. Conditions of Power-up Test Initialization
 (1)
 Time that the computer must be de-energized:

 -200 ms.

 (2)
 A/C configuration:

 -whatever the A/C configuration is on ground.

 Lavatory Smoke Detection - Schematic
 Figure 004B

R 1EFF : 106-149, 301-399, 401-499, 1 26-17-00Page 18 1 1 Aug 01/05 1 1 1CES 1

 B. Progress of Power-up Test
 (1)
 Time:

 -10 sec

 (2)
 Cockpit repercussions directly linked to power-up test accomplishment (some other repercussions may occur depending on the A/C configuration but these can be ignored):

 -none
 C. Results of Power-up Test
 (1)
 Test passed:

 -none

 (2)
 Test failed:

 -MASTER CAUT lights come on with single chime
 -
ECAM warning:
 SMOKE LAV+CRG DET FAULT

 -
ECAM maintenance page:
　
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