(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 288
201-210, Config-1 Aug 01/05 CES
4. Fault Isolation
_______________
A. If an APU auto shutdown occurs during the APU operation and the APU SHUTDOWN report gives the maintenance message:
NO ACCELERATION
ACFT BAT NOT SELECTED/CONTACTOR (5KA)
associated with the Fault Code Number (FCN) 123
- do a check for damage/contamination of the electrical connection STRT MTR (+) of the STARTER MOTOR (8KA).
(1) If the electrical connection STRT MTR (+) is damaged/contaminated:
- do a repair/cleaning.
(2) If the electrical connection is OK:
- use a multimeter to do a resistance check of the aircraft wiring between the electrical connection STRT MTR (+) and the ECB (59KD) AB/J10.
(a) If the resistance value is not between 9 kOhms and 11 kOhms:
- replace the aircraft wiring.
(b) If the resistance value is in the specified limit:
- do a check and repair of the aircraft wiring from the MAIN-START CONTACTOR (5KA) B/5 to the APU MASTER SW P/BSW (14KD) A/D1 and the MAIN-START CONTACTOR (5KA) B/3 to the ECB (59KD) AC/1 and the MAIN-START CONTACTOR (5KA) A/D to BACK-UP-START CONTACTOR (10KA) A/F and the ECB (59KD) AB/J10 to the electrical connection STRT MTR (+) of the STARTER MOTOR (8KA) (Ref. ASM 49-42/01)
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 289
201-210, Config-1 Aug 01/05 CES
TASK 49-00-81-810-832
APU AUTO SHUTDOWN - NO ACCELERATION, Back-up Start Contactor Fault (131-9(A))
1. Possible Causes
_______________
- BACKUP START CONTACTOR SHOWS OPEN CIRCUIT
- FUSE (6KA)
- BACK-UP START CONTACTOR (10KA)
- aircraft wiring
- 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 49-42-00-960-001 Replacement of the APU Start Fuse (6KA)
AMM 49-42-55-000-001 Removal of the Start Contactors (5KA,10KA)
AMM 49-42-55-400-001 Installation of the Start Contactors (5KA,10KA)
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)) ASM 49-42/01 ASM 49-42/01
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
BACKUP START CONTACTOR SHOWS OPEN CIRCUIT
(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 290
201-210, Config-1 Aug 01/05 CES
4. Fault Isolation
_______________
A. If an APU auto shutdown occurs during the APU operation and the APU SHUTDOWN report gives the maintenance message:
NO ACCELERATION
CONTACTOR (10KA)
associated with the Fault Code Number (FCN) 120
- do a check for 28VDC at the BACK-UP START CONTACTOR (10KA) A/D (Ref. ASM 49-42/01).
(1) If there are not 28VDC:
- replace the FUSE (6KA) (Ref. AMM TASK 49-42-00-960-001).
(2) If there are 28VDC:
- replace the BACK-UP START CONTACTOR (10KA) (Ref. AMM TASK 49-42-55-000-001) and (Ref. AMM TASK 49-42-55-400-001).
(a) If the fault continues:
- do a check and repair of the aircraft wiring from the BACK-UP START CONTACTOR (10KA) B/5 to GND and the BACK-UP START CONTACTOR (10KA) B/3 to the ECB (59KD) AC/6 and the BACK-UP START CONTACTOR (10KA) A/G (Ref. ASM 49-42/01) to the ECB (59KD) AB/E3. 中國(guó)航空網(wǎng) m.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：A320 Trouble Shooting Manual 排故手冊(cè) 機(jī)載輔助動(dòng)力 2(67)
