TASK 49-00-00-810-859
Pressure Transducer Wiring Fault (GTCP 36-300)
1. Possible Causes
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- wiring
- ECB (59KD)
2. Job Set-up Information
______________________
A. Referenced Information
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REFERENCE DESIGNATION
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AMM 49-00-00-710-001 Self-Test of the ECB (59KD) (GTCP 36-300) 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 49-61/02
3. Fault Confirmation
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A. Do the self test of the ECB (59KD) (Ref. AMM TASK 49-00-00-710-001).
4. Fault Isolation
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A. If the test gives the maintenance message:
CHECK PRESS XDCR WIRING (8001KM):
with the LRU TROUBLE SHOOT DATA menu information:
PRESS XDCR WIRING SHOWS OPEN CIRCUIT
Fault Code Number: 030
- do a check of the wiring from the ECB (59KD) A1, A4 to the DIFFERENTIAL PRESSURE TRANSDUCER (8043KM) P24 1, 2 (Ref. ASM 49-61/02).
(1) If the wiring is OK:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-001) and (Ref. AMM TASK 49-61-34-400-001).
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 : 063-099, 401-499, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page B202
Config-1 Aug 01/05 CES
TASK 49-00-00-810-860
APU AUTO SHUTDOWN - UNDERSPEED, APU speed decreases with pneumatic/electrical load (GTCP 36-300)
1. Possible Causes
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- COMPRESSOR INLET-PRESSURE TRANSDUCER (8048KM)
- clogged Fuel Filter
- FUEL CONTROL UNIT (8022KM)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 31-36-00-740-008 Access to the Parameter Call-Up Menus AMM 49-00-00-860-003 APU Start by External Power (GTCP 36-300) AMM 49-11-11-000-001 Removal of the Auxiliary Power Unit (APU) - 4005KM
(GTCP 36-300) AMM 49-11-11-400-001 Installation of the Auxiliary Power Unit (APU) -4005KM (GTCP 36-300) AMM 49-32-11-000-001 Removal of the Fuel Control Unit (FCU) (8022KM) (GTCP 36-300) AMM 49-32-11-400-001 Installation of the Fuel Control Unit (FCU) (8022KM)
(GTCP 36-300) AMM 49-32-11-610-001 Servicing of the Fuel Filter (GTCP 36-300) AMM 49-51-18-000-001 Removal of the Compressor Inlet-Pressure Sensor (GTCP
36-300) AMM 49-51-18-400-001 Installation of the Compressor Inlet-Pressure Sensor (GTCP 36-300)
3. Fault Confirmation
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A. Check/Test
(1) Start the APU (Ref. AMM TASK 49-00-00-860-003)
(2) Operate the APU in the Ready-to-Load condition (the blue AVAIL legend in the APU START pushbutton is on).
(3) Read-out the parameter value of the ALPHA-CALL UP label P2A (P2 value) of the APU (Ref. AMM TASK 31-36-00-740-008).
(4) Record the local, prevailing barometric pressure.
(5) Release the APU GEN pushbutton-switch to switch on the APU generator.
「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 : 063-099, 401-499, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page B203
Config-1 Aug 01/05 CES
4. Fault Isolation
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A. If an APU auto shutdown occurs when the APU generator is switched on and the SHUTDOWNS report gives the maintenance message:
UNDERSPEED - FCU (8022KM)/APU FUEL SUPPLY/APU ROTATION
with LRU TROUBLE SHOOT DATA menu information:
NO LRU FAULT DETECTED
Fault Code Number: 204
- compare the ALPHA-CALL UP parameter value of the P2A label with the local barometric pressure.
(1) If there is a noticable difference between both pressure values:
- replace the COMPRESSOR INLET-PRESSURE TRANSDUCER (8048KM) (Ref. AMM TASK 49-51-18-000-001) and (Ref. AMM TASK 49-51-18-400-001).
(2) If there is no difference between the both pressure values: 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(74)
