(2) If the fault continues:
- do a check of the PUSHBUTTON SWITCH-TEST (31WF) and replace it if necessary (Ref. ASM 26-22/02).
(3) If the fault continues:
- do a check of the PUSHBUTTON SWITCH-RESET (32WF) and replace it if necessary (Ref. ASM 26-22/02).
(4) If the fault continues:
- do a check of the RELAY-TEST (33WF) and replace it if necessary (Ref. ASM 26-22/02).
(5) If the fault continues:
- do a check and repair the wiring if necessary between the: PBSW TEST (31WF) connector A/7 and RELAY (33WF) connector A/C2, PBSW TEST (31WF) connector A/A1 and RELAY (33WF) connector A/X1 and A/A1, RELAY (33WF) connector A/C1 and GND, RELAY (33WF) connector A/X2 and GND, RELAY (33WF) connector A/D2 and C/B (30WF), RELAY (33WF) connector A/A2 and C/B (30WF) (Ref. ASM 26-22/02).
D. Do the test as given in the Para. 3.A.
5. Close-up
________
A. Put the aircraft back to its initial configuration.
「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 : ALL ∞∞26-22-00∞∞∞∞∞∞∞∞∞∞Page 211
May 01/05 CES LGCIU Signal Mismatch
1. Possible Causes
_______________
- RELAY-FLIGHT/GROUND (43WF)
- RELAY-AUTO TIME DELAY PUSH (39WF)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 26-22-00-710-001 Operational Test of the APU Fire-Extinguishing Loop/Squib
AMM 32-69-00-740-001 BITE Check Landing Gear Control Interface Unit (LGCIU) using MCDU to Ensure that Continuous BITE is Operative
ASM 26-22/02 ASM 26-22/02
3. Fault Confirmation
__________________
A. The APU FIRE EXTINGUISHING PANEL 20VU (p/n 330TS08Y) has a fault. Special operation is necessary. Incorrect operation causes the APU fire extinguisher bottle to discharge. Airbus supplies a new 20VU panel that corrects this fault. See TFU 26.22.00.007 for more data.
(1) Maintenance recommendation:
(a) Before the test:
- Pull the CIRCUIT BREAKER 30WF on panel 120VU.
(b) During the test:
- Push the APU FIRE TEST BUTTON quickly and fully.
- Hold it fully during the test.
- Release it quickly.
(c) After the test:
- Close the CIRCUIT BREAKER 30WF on panel 120VU.
(2) Do the operational test of the APU fire-extinguishing system (Ref. AMM TASK 26-22-00-710-001).
「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 : ALL ∞∞26-22-00∞∞∞∞∞∞∞∞∞∞Page 212
May 01/05R
CES
4. Fault Isolation
R R R A. If the test gives a different maintenance message: - Do the trouble shooting procedure related to the maintenance message.
B. If the test gives the maintenance message APU FIRE: - do a check of the RELAY-FLIGHT/GROUND (43WF) and replace it if necessary (Ref. ASM 26-22/02).
(1) If the fault continues: do a check of the RELAY-AUTO TIME DELAY PUSH (39WF) and replace it if necessary (Ref. ASM 26-22/02).
R (2) If the fault continues: - do the BITE test of the landing gear (Ref. AMM TASK 32-69-00-740-001).
R R R (a) If the test gives a different maintenance message: - Do the trouble shooting procedure related to the maintenance message.
(3) If the fault continues: - do a check and repair the wiring if necessary between: RELAY (43WF) connector A/X1 and LGCIU 1 (5GA1) connector AA/5B, RELAY (43WF) connector A/A2 and RELAY (39WF) connector A/A2, RELAY (39WF) connector A/A1 and BODY-LIGHT (40WF), RELAY (43WF) connector A/A1 and CB (30WF), RELAY (43WF) connector A/X2 and GND (Ref. ASM 26-22/02).
C. Do the test as given in the Para. 3.A.
5. Close-up________
A. Put the aircraft back to its initial configuration.
APU DISCH light is illuminated
1. Possible Causes
_______________
- discharged Fire Extiguishing Bottle (11WF)
- wiring
- ENG/APU FIRE PANEL (1WD) 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 FIRE PROTECTION 防火(112)
