- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-001) and (Ref. AMM TASK 49-61-34-400-001).
**ON A/C 001-003, 051-062,
B. If the test gives the maintenance message (CLASS I):
CONTACTOR 5KA:
- do a check and repair of the wiring from the ECB (59KD) AC/1 to the MAIN START CONTACTOR (5KA) B/3 (Ref. ASM 49-42/01).
R **ON A/C 001-003, 051-099, 401-499,
C. Do the test as given in the 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 : 001-003, 051-099, 401-499, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page 203
Config-1 Aug 01/05 CES
TASK 49-00-00-810-802
APU AUTO SHUT DOWN - Slow Start Shutdown, Back-Up Start Contactor Fault (GTCP 36-300)
1. Possible Causes
_______________
- FUSE (6KA)
- CONTACTOR-BACK-UP START (10KA)
- wiring
- ECB (59KD)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 49-00-00-710-004 Operational Test of the APU (4005KM) (GTCP 36-300)
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 49-61-34-000-001 Removal of the Electronic Control Box (ECB) (59KD)
(GTCP 36-300) AMM 49-61-34-400-001 Installation of the Electronic Control Box (ECB)
(59KD) (GTCP 36-300) ASM 49-42/00 ASM 49-42/01
3. Fault Confirmation
__________________
A. Do the operational test of the APU (Ref. AMM TASK 49-00-00-710-004).
4. Fault Isolation
_______________
**ON A/C 001-003, 051-062,
A. If an APU auto shutdown occurs during the APU start sequence and the APU SHUTDOWNS report gives maintenance message:
START TIME EXCEEDED - CONTACTOR 10KA:
- do a check for 28VDC at the BACK-UP START CONTACTOR (10KA) A/D (Ref. ASM 49-42/01).
(1) If there are no 28VDC:
- replace the FUSE (6KA) (Ref. AMM TASK 49-42-00-960-001).
(2) If there are 28VDC:
- replace the CONTACTOR-BACK-UP START (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 the wiring from the BACK-UP START CONTACTOR (10KA) B/5 to the ground (Ref. ASM 49-42/01).
- do a check and repair the wiring from the ECB (59KD) AC/6 to the BACK-UP START CONTACTOR (10KA) B/3 (Ref. ASM 49-42/01).
- do a check and repair the wiring from the ECB (59KD) AB/E3 to the BACK-UP START CONTACTOR (10KA) A/G (Ref. ASM 49-42/01).
- do a check for 28VDC at the BACK-UP START CONTACTOR (10KA) A/D (Ref. ASM 49-42/00).
1 If the fault continues:
_
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-001) and (Ref. AMM TASK 49-61-34-400-001).
R **ON A/C 063-099, 401-499,
A. Maintenence Action
(1) If an APU auto shutdown occurs during the APU start sequence and the APU SHUTDOWNS report gives maintenance message:
NO ACCELERATION - CONTACTOR 10KA:
with the LRU TROUBLE SHOOT DATA menu information: BACKUP START CONTACTOR SHOWS OPEN CIRCUIT Fault Code Number: 120
- do a check for 28VDC at the BACK-UP START CONTACTOR (10KA) A/D (Ref. ASM 49-42/01).
(a) If there are no 28VDC:
- replace the FUSE (6KA) (Ref. AMM TASK 49-42-00-960-001).
(b) If there are 28VDC:
- replace the CONTACTOR-BACK-UP START (10KA) (Ref. AMM TASK 49-42-55-000-001) and (Ref. AMM TASK 49-42-55-400-001).
1 If the fault continues:
_
- do a check and repair the wiring from the ECB (59KD) AB/E3 to the BACK-UP START CONTACTOR (10KA) A/G (Ref. ASM 49-42/01). 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 机载辅助动力 1(2)
