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 REVERSE FLOW - BLEED FLOW XDCR P24
 - replace the COMPRESSOR DISCHARGE-PRESSURE SNSR P24 (Ref. AMM TASK 49-51-19-000-002) and (Ref. AMM TASK 49-51-19-400-002).
 NOTE : Do a check and make sure that the orifices and the lines which are
____ connected to the compressor discharge pressure sensor are not clogged. Clean if necessary.
 (1) If the fault continues:
 - do a check and repair the aircraft wiring from the ECB (59KD) AB/A1, A4, B2, B3, A2, A3 to the COMPRESSOR DISCHARGE PRESSURE SNSR P24/1, 2, 3, 4, 5, 6 (Ref. ASM 49-61/02).
 「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 : 106-106, 108-149, 211-299, 301-399, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page 298
 Config-2 Aug 01/05 CES

 

 (2) If the fault continues:
 - replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-002) and (Ref. AMM TASK 49-61-34-400-002).
 B. Do the test given in para. 3.

 TASK 49-00-00-810-934

 

 APU AUTO SHUT DOWN - APU FUEL VALVE OPEN, Fuel Control Unit Fault (APS 3200)
 1. Possible Causes
_______________
 - FUEL CONTROL UNIT (8022KM)

 - ECB (59KD)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 49-00-00-710-008 Operational Test of the APU (APS 3200)
 AMM 49-32-11-000-002 Removal of the Fuel Control Unit (8022KM) (APS 3200)
 AMM 49-32-11-400-002 Installation of the Fuel Control Unit (8022KM) (APS

 3200) AMM 49-61-34-000-002 Removal of the Electronic Control Box (ECB) (59KD) (APS 3200) AMM 49-61-34-400-002 Installation of the Electronic Control Box (ECB) (59KD) (APS 3200)
 3. Fault Confirmation
__________________
 A. Do the operational test of the APU (Ref. AMM TASK 49-00-00-710-008).
 NOTE : To clear the fault cycle the circuit breaker
____
 APU/APU/CTL ........ 2KD (L42)
 on panel 121VU.

 4. Fault Isolation
_______________
 A. If the APU Last Leg Report gives the maintenance message:
 FUEL CTL UNIT (8022KM):
 Fault Code Number: 099

 NOTE : The APU SHUTDOWNS report gives the maintenance message:
____ APU FUEL VALVE FAILED OPEN - FUEL CTL UNIT (8022KM) APU Auto Shut Down Fault Code Number: 099
 - replace the FUEL CONTROL UNIT (8022KM) (Ref. AMM TASK 49-32-11-000-002) and (Ref. AMM TASK 49-32-11-400-002).
 (1) If the fault continues:
 - replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-002) and (Ref. AMM TASK 49-61-34-400-002).
 「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 : 106-106, 108-149, 211-299, 301-399, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page A200
 Config-2 Aug 01/05 CES

 

 B. Do the test given in para. 3.

 

 TASK 49-00-00-810-937
 No APU Bleed-Air Pressure, Low or Fluctuating APU Bleed-Air Pressure (APS 3200)
 1. Possible Causes
_______________
 - VALVE-FLOW CTL (11HB)

 - BLEED CONTROL VALVE (8051KM)

 - IGV ACTUATOR (8014KM)

 - INLET TEMP/INLET PRESSURE SENSOR (8013KM)

 - LOAD COMPRESSOR DISCHARGE PRESSURE SENSOR (8039KM)

 - ECB (59KD)

 - STARTER SHUTOFF VALVE (SAV)

 - RELAY (16HB)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
36-12-00-810-804 Low Air Pressure in the Right Crossbleed Duct
 49-00-00-810-903 Bleed Flow-Transducer Fault (APS 3200)
 49-00-00-810-904 APU AUTO SHUT DOWN - SURGE /REVERSE FLOW, Bleed

 Control Valve Fault (APS3200) 49-00-00-810-905 APU AUTO SHUT DOWN - OVERTEMPERATURE, Inlet Guide
 Vane Actuator Fault (APS 3200) 49-00-00-810-908 Inlet Pressure/Temperature Sensor Fault (APS 3200) 49-00-00-810-942 Bleed Control Valve Fault (APS 3200) AMM 21-51-51-000-001 Removal of the Pack Flow-Control Valve AMM 21-51-51-400-001 Installation of the Pack Flow-Control Valve AMM 36-11-00-740-001 BITE Test of the BMC 1(2) AMM 49-00-00-710-005 Self-Test of the ECB (APS 3200) AMM 49-00-00-860-005 APU Start by External Power (APS 3200) AMM 49-00-00-860-006 APU Shutdown by External Power (APS 3200) AMM 49-11-11-000-003 Removal of the Power Plant (APU) (APS 3200) AMM 49-11-11-400-003 Installation of the Power Plant (APU) (APS 3200) AMM 49-23-17-000-001 Removal of the Inlet Pressure/Temperature Sensor
　
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