R (2) IF there are no chapter 49 or ECB messages, or if the fault continues
R after the trouble shooting:
R - do the BITE test of the GAPCU (Ref. AMM TASK 24-41-00-740-002).
R (a) If the BITE test gives the message TEST FAILED:
R - do the trouble shooting given in Para 4.A.
R (b) If the BITE test gives the message TEST PASSED:
R - do the trouble shooting given in Para 4.B.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : 401-499, ∞∞24-20-00∞∞∞∞∞∞∞∞∞∞Page C254
Aug 01/05 CESR 4. Fault Isolation
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R A. If the BITE test gives the message TEST FAILED:
R - push the line key adjacent to the TEST FAILED message.
R (1) If the maintenance message GAPCU (24XG) comes into view:
R - replace the GAPCU (24XG) (Ref. AMM TASK 24-41-34-000-001) and (Ref.
R AMM TASK 24-41-34-400-001).
R B. Table of the circuit breakers used in this procedure:
R -------------------------------------------------------------------------------R PANEL DESIGNATION IDENT. LOCATION
R -------------------------------------------------------------------------------R 122VU ELEC/GEN1/OFF/BTC1 SPLY 5XU T28
R C. If the BITE test gives the message TEST PASSED:
R - do a check of the wiring of the APU ready circuit (Ref. ASM 49-61/01),
R (Ref. ASM 24-23/02) and (Ref. ASM 24-22/02) between:
R . pin B/6J of the ECB (59KD) and pin X1 of the APU AVAIL relay (6KD)
R . pin X2 of the APU AVAIL relay and ground
R . pin A/7C of the GAPCU and pin A1 of the APU AVAIL relay
R . pin A2 of the APU AVAIL relay and pin 37 of the diode module 1162VD
R . pin 38 of the diode module 1162VD and pin 2 of the ELEC/GEN1/OFF/BTC1 R SPLY circuit breaker (5XU).
R (1) If the wiring is not correct:
R - repair or replace as necessary.
R (2) If the wiring is correct:
R - replace the RELAY-APU AVAIL (6KD).
R (a) If the fault continues:
R - replace the DIODE MODULE (1162VD).
R 1_ If the fault continues:
R - replace the ELEC/GEN1/OFF/BTC1 SPLY (5XU).
R a_ If the fault continues:
R - replace the GAPCU (24XG) (Ref. AMM TASK 24-41-34-000-001)
R and (Ref. AMM TASK 24-41-34-400-001).
R D. Do the test given in para. 3.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : 401-499, ∞∞24-20-00∞∞∞∞∞∞∞∞∞∞Page C255
Aug 01/05 CES
R TASK 24-20-00-810-948
R Failure of the Auxiliary Power Unit Generator R 1. Possible Causes
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R - GAPCU (24XG)
R - GEN-APU (8XS)
R 2. Job Set-up Information
______________________
R A. Referenced Information
R -------------------------------------------------------------------------------R REFERENCE DESIGNATION R -------------------------------------------------------------------------------
R AMM 24-23-51-000-001 R AMM 24-23-51-400-001 R AMM 24-41-00-861-002 R R AMM 24-41-00-862-002 R R AMM 24-41-34-000-001 R R AMM 24-41-34-400-001 R
R 3. Fault Confirmation
__________________
R A. Test Removal of the APU Generator 8XS Installation of the APU Generator 8XS Energize the Aircraft Electrical Circuits from the APU De-energize the Aircraft Electrical Circuits Supplied from the APU Removal of the Ground Auxiliary Power Control Unit (GAPCU) (24XG) Installation of the Ground Auxiliary Power Control Unit (GAPCU) (24XG)
R NOTE : This CFDS message comes into view when there is an overfrequency
____ R trip condition of the APU generator related to an overspeed R condition of the turbine. The CFDS message ECB (59KD)/APU R (4005KM)/GAPCU (24XG) can come into view with CMS messages related R to the chapter 49 or to the ECB. Do the trouble shooting procedure R related to the chapter 49 or to the ECB messages before you do the R trouble shooting for the CFDS message ECB (59KD)/APU R (4005KM)/GAPCU (24XG).
R (1) If the CFDS message ECB (59KD)APU (4005KM)/GAPCU (24XG) comes into
R view with CFDS messages related to the chapter 49 or to the ECB:
R - do the trouble shooting procedure related to the chapter 49 or ECB
R messages.
R (2) If there are no chapter 49 or ECB messages, or if the fault continues
R after the trouble shooting:
R - do the trouble shooting given in Para 4.A.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : 401-499, ∞∞24-20-00∞∞∞∞∞∞∞∞∞∞Page C256 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 电源 2(84)
