- do a check of the APU inlet duct through the inlet flap for fire damage.
(a) If there are signs of fire damage:
- replace the APU (4005KM) (Ref. AMM TASK 49-11-11-000-004) and (Ref. AMM TASK 49-11-11-400-004).
(b) If there are no signs of fire damage:
- do a check for damage/contamination of the electrical connector P6 of the APU INLET TEMPERATURE SENSOR (8010KM).
1 If the electrical connector P6 is damaged/contaminated:
_ - do a repair/cleaning.
2 If the electrical conector is OK:
_
- disconnect the electrical connector P6
- put a jumper across the sockets A and B of the electrical connector P6.
- use a multimeter to do a resistance check of the aircraft wiring across the ECB (59KD) AB/H4 to ECB (59KD) AB/H3.
「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 A241
201-210, Config-1 Aug 01/05 CES a If the resictance value is > 10 Ohms:
_
- replace the aircraft wiring. b If the fault continues:
_
- replace th APU INLET TEMPERATURE SENSOR (8010KM). (Ref. AMM TASK 49-23-14-000-001) and (Ref. AMM TASK 49-23-14-400-001).
c If the fault continues:
_
- replace the ECB (59KD)of the APU (4005KM) (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 A242
201-210, Config-1 Aug 01/05 CES
TASK 49-00-81-810-844
APU AUTO SHUTDOWN - LOSS OF SPEED, Speed Sensor Fault and ECB internal Fault (131-9(A))
1. Possible Causes
_______________
- SPEED SENSOR 1 FAILURE AND ECB INTERNAL FAILURE
- SPEED SENSOR 2 FAILURE AND ECB INTERNAL FAILURE
- SPEED SENSOR P26
- ECB (59KD)
- SPEED SENSOR (8060KM)
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)) AMM 49-71-13-000-003 Removal of the Speed Sensors (8060KM) (131-9(A)) AMM 49-71-13-400-003 Installation of the Speed Sensors (8060KM) (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 SPEED SENSOR 1 FAILURE AND ECB INTERNAL FAILURE
SPEED SENSOR 2 FAILURE AND ECB INTERNAL FAILURE
(4) Start the APU and apply Bleed Air for 20 seconds, minimum (Ref. AMM TASK 49-00-00-860-008).
「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 A243
201-210, Config-1 Aug 01/05 CES
4. Fault Isolation
_______________ R **ON A/C 001-049, 101-105, 107-107, 151-154, 201-207,
A. If an APU auto shutdown occurs during the APU operation and the APU SHUTDOWN report gives the maintenance message:
LOSS OF SPEED
SPEED SENSOR P26 + ECB (59KD)
associated with the Fault Code Number (FCN) 2 or 3
- replace the SPEED SENSOR P26 (Ref. AMM TASK 49-71-13-000-003) and (Ref. AMM TASK 49-71-13-400-003) and ECB (59KD) (Ref. AMM TASK 49-61-34-000-003) and (Ref. AMM TASK 49-61-34-400-003).
**ON A/C 001-049, 101-105, 151-199, 201-210,
Post SB 49-1062 For A/C 001-049,101-105,151-154,201-207,
A. If an APU auto shutdown occurs during the APU operation and the APU SHUTDOWN report gives the maintenance message:
LOSS OF SPEED
SPEED SENSOR (8060KM) AND ECB (59KD)
associated with the Fault Code Number (FCN) 2 or 3
- replace the SPEED SENSOR (8060KM) (Ref. AMM TASK 49-71-13-000-003) and (Ref. AMM TASK 49-71-13-400-003) and ECB (59KD) (Ref. AMM TASK 49-61-34-000-003) and (Ref. AMM TASK 49-61-34-400-003).
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