- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-001) and (Ref. AMM TASK 49-61-34-400-001).
(2) If the fault continues after the first flight on the subsequent day:
- do a check and repair the wiring from the ECB (59KD) AB/A8, A9 to the EGT THERMOCOUPLE RAKE 2 studs/alumel, chromel (Ref. ASM 49-61/02).
R **ON A/C 063-099, 401-499,
A. If the test gives the maintenance message:
EGT TCPLE RAKE (8057KM2)
with the LRU TROUBLE SHOOT DATA menu information:
EGT2 SENSOR SHOWS OUT OF RANGE LOW
Fault Code Number: 046
or
EGT2 SENSOR DISAGREES WITH EGT2 SENSOR > 166C
Fault Code Number: 047
- replace the EGT THERMOCOUPLE RAKE (8057KM2) (Ref. AMM TASK 49-72-15-000-001) and (Ref. AMM TASK 49-72-15-400-001).
(1) If the fault continues after the first flight on the subsequent day:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-001) and (Ref. AMM TASK 49-61-34-400-001).
(2) If the fault continues after the first flight on the subsequent day:
- do a check and repair the wiring from the ECB (59KD) AB/A8, A9 to the EGT THERMOCOUPLE RAKE 2 studs/alumel, chromel (Ref. ASM 49-61/02).
R **ON A/C 001-003, 051-099, 401-499,
B. Do the operational test of the APU (Ref. AMM TASK 49-00-00-710-004).
NOTE : Make an entry in the applicable logbook that you must read the APU
____ CLASS 3 FAULTS after the first flight on the subsequent day.
TASK 49-70-00-810-805
Serial-Number Encoder-Unit Fault (GTCP 36-300)
1. Possible Causes
_______________
- SERIAL NUMBER ENCODER P20
- ECB (59KD)
- wiring
- SERIAL NUMBER ENCODER (8083KM)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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) AMM 49-73-51-000-001 Removal of the Encoder (8063KM) (GTCP 36-300) AMM 49-73-51-400-001 Installation of the Encoder (8063KM) (GTCP 36-300) ASM 49-61/02
3. Fault Confirmation
__________________
A. Start the Power Up Test
(1) On the overhead panel 25VU:
(a) Push the APU MASTER SW pushbutton switch 14KD to the ON position (the ON legend comes on blue).
(b) After 30 seconds, push the APU MASTER SW pushbutton switch to the off position (the blue ON legend goes off).
(2) On the MCDU:
(a) Read the APU CLASS 3 FAULTS.
4. Fault Isolation
_______________
**ON A/C 001-003, 051-062,
A. If the test gives the maintenance message:
SERIAL NUMBER ENCODER P20:
- replace the SERIAL NUMBER ENCODER P20 (Ref. AMM TASK 49-73-51-000-001) and (Ref. AMM TASK 49-73-51-400-001).
(1) If the fault continues after the first flight on the subsequent day:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-001) and (Ref. AMM TASK 49-61-34-400-001).
(2) If the fault continues after the first flight on the subsequent day:
- do a check and repair the wiring from the ECB (59KD) AB/D9, J7, J8, D10 to the SERIAL NUMBER ENCODER P20/1, 2, 3, 4 (Ref. ASM 49-61/02).
R **ON A/C 063-099, 401-499,
A. If the test gives the maintenance message:
APU S/N DECODER (8063KM)
with the LRU TROUBLE SHOOT DATA menu information:
APU S/N 1 SHOWS INCORRECT RESISTANCE
Fault Code Number: 240
or
APU S/N 2 SHOWS INCORRECT RESISTANCE
Fault Code Number: 241
or
APU S/N 3 SHOWS INCORRECT RESISTANCE
Fault Code Number: 242
or
- replace the SERIAL NUMBER ENCODER (8083KM) (Ref. AMM TASK 49-73-51-000-001) and (Ref. AMM TASK 49-73-51-400-001).
(1) If the fault continues after the first flight on the subsequent day:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-001) and (Ref. AMM TASK 49-61-34-400-001). 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 2(158)
