- do a check for 28VDC at the BACK-UP START CONTACTOR (10KA) A/D (Ref. ASM 49-42/01).
(b) If the fault continues:
- 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 291
201-210, Config-1 Aug 01/05 CES
TASK 49-00-81-810-833
APU AUTO SHUTDOWN - NO ACCELERATION, Oil Heater Fault (131-9(A))
1. Possible Causes
_______________
- OIL HEATER FAILURE
- 115 VAC at the APU OIL HEATER (P28)
- OIL HEATER (P28)
- wiring
- APU MAIN RELAY (32KD)
- ECB (59KD)
- 115 VAC at the APU OIL HEATER (8093KM)
- OIL HEATER (8093KM)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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 49-96-51-000-002 Removal of the Oil Heater (8093KM) (131-9(A)) AMM 49-96-51-400-002 Installation of the Oil Heater (8093KM) (131-9(A)) ASM 49-96/01
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
OIL HEATER FAILURE
NOTE : To repeat the fault the APU must be cold soaked.
____
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page 292
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 the APU SHUTDOWN report gives the maintenance message:
NO ACCELERATION
APU OIL HEATER P7
associated with the Fault Code Number (FCN) 115
- do a check for 115 VAC at the APU OIL HEATER (P28) (Ref. ASM 49-96/01): NOTE : Make sure that:
____
- the APU MASTER SW P/BSW on the panel 25VU is OFF,
- the circuit breaker OIL HEATER (1KT) on the circuit breaker panel (121VU) is closed.
- the 115 VAC power supply at the SERVICE BUS 2 (214XP-B) is correct.
(1) If there is a ground signal and 115 VAC:
- replace the OIL HEATER (P28) (Ref. AMM TASK 49-96-51-000-002) and (Ref. AMM TASK 49-96-51-400-002).
(2) If there is no ground signal:
- do a check and repair of the wiring from the APU OIL HEATER (P28) P6/1 to GND (Ref. ASM 49-96/01).
(3) If there is no 115 VAC:
- replace the APU MAIN RELAY (32KD)
NOTE : The APU MAIN RELAY (32KD) is installed in the CONTACTOR BOX
____
(107VU).
(a) If the fault continues:
- do a check and repair of the wiring from the APU OIL HEATER (P28) P6/1 to GND (Ref. ASM 49-96/01).
(b) If the fault continues:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-003) (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 the APU SHUTDOWN report gives the maintenance message:
NO ACCELERATION
APU OIL HEATER (8093KM)
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page 293
201-210, Config-1 Aug 01/05 CES associated with the Fault Code Number (FCN) 115
- do a check for 115 VAC at the APU OIL HEATER (8093KM) (Ref. ASM 49-96/01):
NOTE : Make sure that:
____
- the APU MASTER SW P/BSW on the panel 25VU is OFF,
- the circuit breaker OIL HEATER (1KT) on the circuit breaker panel (121VU) is closed.
- the 115 VAC power supply at the SERVICE BUS 2 (214XP-B) is correct.
(1) If there is a ground signal and 115 VAC:
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