A320 Trouble Shooting Manual 排故手册机载辅助动力 2(3)_航空信息_民用航空_通用航空

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of the LRUs associated with the shutdown reason, the failed LRU is
displayed together with the shutdown reason on the APU shutdown page of
the CFDS. If no current failed LRU matches an LRU associated with a
particular shutdown reason, the ECB displays the shutdown reason and a
list of LRUs which most probably caused the APU to shutdown (table 4,
col. 2).

A fixed Fault Code Number (FCN) is allocated to each detectable fault.
Each FCN (with some exceptions) is linked to a CFDS maintenance message.
Both, the FCN and the CFDS maintenance message, are shown the LAST LEG
REPORT, PREVIOUS FLIGHT REPORT etc..
In many occasions two or more FCNs are linked to the same CFDS message.
This happens when different FCNs (faults) are in conjunction with the
same Line Replaceable Unit (LRU).

Example:

-------------------------------------------------------------------------------FCN | Fault Description | CFDS Message | Class ----+----------------------------------------+-------------------------+-------021 | Inlet Press. Sensor shows out of range | INLET PRESS XDCR(8048KM)| 2 ----+----------------------------------------+-------------------------+-------022 | Inlet Press. Sensor shows < 8 psia | INLET PRESS XDCR(8048KM)| 2
| on ground | | ----+----------------------------------------+-------------------------+-------023 | Inlet Press. Sensor shows out of range | INLET PRESS XDCR(8048KM)| 2
| low | | ----+----------------------------------------+-------------------------+-------024 | Inlet Press. Sensor shows out of range | INLET PRESS XDCR(8048KM)| 2
| high | |
You can find a complete enumeration of all FCNs with their associated CFDS messages in Table 5.

B. BITE Detection

(1) CLASS 1 Faults
Table 1

-------------------------------------------------------------------------------Text for CFDS Indication | ATA | BITE Detection (Failed LRUs) ============================+==========+======================================= POWER SUPPLY INTERRUPT | 24-00-00 | Power Supply Interrupt
----------------------------+----------+---------------------------------------CHECK PRESS XDCR WIRING | 49-11-15 | Press XDCR wiring shows open circuit (8001KM) | |
----------------------------+----------+---------------------------------------CHECK PRESS XDCR WIRING/ | 49-11-15 | Press XDCR wiring open (800KM1) / ECB (59KD) | | or ECB internal failure
----------------------------+----------+---------------------------------------AIR INTAKE FLAP ACTUATOR | 49-16-51 | Inlet Flap shows Flap open high (4015KM) | | current
| | Inlet Flap shows Flap failed to open | | Inlet Flap shows Flap loss of open | | indication
----------------------------+----------+---------------------------------------CHECK IGV ASSEMBLY/ | 49-23-00 | IGV Position disagrees with command IGV ACTUATOR (8014KM) | |
----------------------------+----------+---------------------------------------IGV ACTUATOR (8014KM) | 49-23-51 | IGV Torque Motor shows open/short | | circuit
----------------------------+----------+---------------------------------------IGV ACTUATOR (8014KM)/ | 49-23-51 | No LRU detected FCU (8022KM) / ECB (59KD) | |
----------------------------+----------+---------------------------------------
FUEL CONTROL UNIT (8022KM) | 49-32-11 | Fuel Solenoid shows circuit failure | | Fuel Torque Motor shows open/short | | circuit
----------------------------+----------+---------------------------------------FUEL CONTROL UNIT (8022KM)/| 49-32-11 | No LRU detected ECB (59KD) | |
----------------------------+----------+---------------------------------------FCU (8022KM)/IGV ACTUATOR | 49-32-11 | No LRU detected (8014KM)/START MOT (8KA) | |
----------------------------+----------+---------------------------------------FCU (8022KM) / APU FUEL | 49-32-11 | No LRU detected SUPPLY / APU ROTATION | |
----------------------------+----------+---------------------------------------CHECK IGNITION SYSTEM/ | 49-41-00 | No LRU detected FCU(8022KM)/ECB (59KD) | |
----------------------------+----------+---------------------------------------IGNITION UNIT (8030KM) | 49-41-38 | Ignition Unit shows open/short | | circuit ----------------------------+----------+---------------------------------------STARTER MOTOR (8KA) | 49-42-51 | Starter Motor shows open/short
「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 304
Config-1 Aug 01/05 CES