- do a repair/cleaning
(2) If the electrical connector is OK:
- use a multimeter to do a resistance check across pin 1 and pin 2; required value < 25 Ohms and pin 3 and pin 4; required value < 25 Ohms and the pin 1/pin 3 and pin 5; required value < 100 kOhms
(a) If the resistance values are out of the specified limits:
- replace the SPEED SENSOR (8060KM) 1 and/or 2 (Ref. AMM TASK 49-71-13-000-003) and (Ref. AMM TASK 49-71-13-400-003).
(b) If the resistance values are in the specified limits:
- do a check and repair of the aircraft wiring from the ECB (59KD) AB/E6,E7 to the electrical connector P26/1,2 (SPEED SENSOR 1) and the ECB (59KD) AB/D3,D4 to the electrical connector P26/3,4 (SPEED SENSOR 2) (Ref. ASM 49-61/01).
1 If the fault continues:
_
- replace the (59KD) (Ref. AMM TASK 49-61-34-000-003) and (Ref. AMM TASK 49-61-34-400-003).
R **ON A/C 001-049, 101-105, 107-107, 151-199, 201-210,
B. 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, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page A247
201-210, Config-1 Aug 01/05 CES
TASK 49-00-81-810-846
APU AUTO SHUTDOWN - LOSS OF SPEED, ECB internal Fault (131-9(A))
1. Possible Causes
_______________
- ECB INTERNAL FAILURE
- ECB (59KD)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 49-00-00-860-008 APU Start by External Power (131-9(A)) AMM 49-61-34-000-003 Removal of the Electronic Control Box (ECB) (131-9(A)) AMM 49-61-34-400-003 Installation of the Electronic Control Box (ECB) (131-9(A))
3. Fault Confirmation
__________________
A. Read-out of ECB Trouble-Shooting Data
(1) Put the APU MASTER SW to the ON position.
(2) Get access to the APU SHUTDOWN report.
(3) Push the '>' adjacent to LRU DATA:
- the MCDU menu shows
ECB INTERNAL FAILURE
(4) Start the APU and apply Bleed Air for 20 seconds, minimum (Ref. AMM TASK 49-00-00-860-008).
4. Fault Isolation
_______________
A. If an APU auto shutdown occurs during the APU operation and the APU SHUTDOWN report gives the maintenance message:
LOSS OF SPEED
ECB (59KD)
associated with the Fault Code Number (FCN) 4
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-003) and (Ref. AMM TASK 49-61-34-400-003).
B. 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, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page A248
201-210, Config-1 Aug 01/05 CES
TASK 49-00-81-810-847
APU AUTO SHUTDOWN - REVERSE FLOW, Reverse Flow Condition for min. 6 Seconds
(131-9(A))
1. Possible Causes
_______________
- NO LRU FAULT DETECTED
- blockage of the APU inlet
- APU BLEED CHECK-VALVE (7260HM)
- tube of the DIFFERENTIAL PRESSURE TRANSDUCER (P24)
- tube of the TOTAL PRESSURE TRANSDUCER (P23)
- DIFFERENTIAL PRESSURE TRANSDUCER (P24)
- TOTAL PRESSURE TRANSDUCER (P23)
- SURGE CONTROL VALVE (P18)
- ECB (59KD)
- tube of the DIFFERENTIAL PRESSURE TRANSDUCER (8043KM).
- tube of the TOTAL PRESSURE TRANSDUCER (8044KM).
- DIFFERENTIAL PRESSURE TRANSDUCER (8043KM)
- TOTAL PRESSURE TRANSDUCER (8044KM)
- SURGE CONTROL VALVE (8058KM)
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific air source
No specific plugs
B. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 36-12-51-000-002 Removal of the APU Bleed Check-Valve (7260HM)
AMM 36-12-51-200-001 Remove and Check Auxiliary Power Unit Bleed
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