A320 Trouble Shooting Manual 排故手册 FUEL 燃油1(63)

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____ the IDG cooling, from the related FLSCU-1(2) 7QJ(9QJ).
 (4) If there is a ground on pin 2A of the rack connector 1KS1(2)-AA, go to step (6) (unserviceable).
 NOTE : This shows that the EIU does not get an open command, for the
____ Fuel Return Valve (FRV), from the FLSS, 28-46-00.
 (5) If there is no ground on pin 2A of the rack connector 1KS1(2)-AA (serviceable):
 NOTE : This is the correct logic output from the FLSS, 28-46-00 for
____ the conditions (inputs) given in Para. 3.B.(10) and will let the FRV open if required.
 (a) Install the EIU 1KS1(1KS2) removed in step (1) or (2) (Ref. AMM TASK 73-25-34-400-040).

 (b) Do a check of the applicable Fuel Return Valve (FRV) (Ref. AMM TASK 73-11-50-720-001) and replace, if necessary, (Ref. AMM TASK 73-11-50-000-001) and (Ref. AMM TASK 73-11-50-400-001).

 (c) If the fault continues: 1 Go to Para. 3.B. and do the examination of the fault symptoms

_ again for a possible alternative entry point(s).
 2 Go to Para. 4.B. - Fuel Recirculation (Cooling) Pipe
_
 Trouble-shooting.

 (6) Remove the related FLSCU (Ref. AMM TASK 28-46-34-000-001).

 (7) If the ground seen in step (4):

 (a) Is still shown (with the FLSCU removed): 1 Do a check of the aircraft wiring (IDG fuel logic output wire)
_
 (Ref. ASM 28-16/01) between:

 - the related FLSCU rack connector AA, pin 4D and the related EIU rack connector AA, pin 2A.
 2 Repair all the unserviceable wiring and connectors.
_ 3 Install the FLSCU removed in step (6) (Ref. AMM TASK 28-46-34-
_
 400-001).

 4 Do the test given in step (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 : 301-399, ∞∞28-16-00∞∞∞∞∞∞∞∞∞∞Page 209
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 5_ Install the EIU removed in step (1) or (2) (Ref. AMM TASK 73-
25-34-400-040).
 6_ Do the test given in Para. 3.B.

 (b) Is not shown (with the FLSCU removed):
 1 Replace the FLSCU-1 (7QJ) (FLSCU-2 (9QJ)) with a serviceable
_ item and install (Ref. AMM TASK 28-46-34-400-001).
 2 Do a check of the aircraft wiring (that is common to FLSCU-1
_ and FLSCU-2) (Ref. ASM 28-16/01) between:
 - the FLSCU-1 rack connector AA, pin 14C and the FLSCU-2 rack connector AA, pin 14D

 - the FLSCU-1 rack connector AA, pin 14D and the FLSCU-2 rack connector AA, pin 14C

 - the FLSCU-1 rack connector AA, pin 12D and the actuator-crossfeed valve free connector 5QE-A, pin B

 - the FLSCU-2 rack connector AA, pin 12D and the actuator-crossfeed valve free connector 5QE-A, pin B.

 3 For a IDG 1 failure, do a check of the aircraft wiring (Ref.
_ ASM 28-16/01) between:
 - the FLSCU-1 rack connector AA, pin 13C and the PRESS SW-FUEL PUMP No. 1, L WING TK connector 23QA-A, pin C

 - the FLSCU-1 rack connector AA, pin 13D and the PRESS SW-FUEL PUMP No. 2, L WING TK connector 27QA-A, pin C

 - the FLSCU-1 rack connector AA, pin 12C and the PRESS SW-FUEL PUMP No. 1, CTR TK connector 39QA-A, pin C

 - the FLSCU-1 rack connector AA, pin 1D and the C/B-FUEL/CTR TK/PUMP1 AND 2/CTL AND IND (31QA).

 4 For a IDG 2 failure, do a check of the aircraft wiring (Ref.
_ ASM 28-16/01) between:
 - the FLSCU-2 rack connector AA, pin 13C and the PRESS SW-FUEL PUMP No. 1, R WING TK connector 24QA-A, pin C

 - the FLSCU-2 rack connector AA, pin 13D and the PRESS SW-FUEL PUMP No. 2, R WING TK connector 28QA-A, pin C

 - the FLSCU-2 rack connector AA, pin 12C and the PRESS SW-FUEL PUMP No. 2, CTR TK connector 40QA-A, pin C

 - the FLSCU-2 rack connector AA, pin 1D and the C/B-FUEL/CTR TK/PUMP1 AND 2/CTL AND IND (32QA).

 5 Repair all the unserviceable wiring and connectors.
_

 6 Install the FLSCU removed in step (6) (Ref. AMM TASK 28-46-34-
_ 400-001).
 7 Do the test given in step (3).
_

 8 Install the EIU removed in step (1) or (2) (Ref. AMM TASK 73-
_ 25-34-400-040).
 「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 : 301-399, ∞∞28-16-00∞∞∞∞∞∞∞∞∞∞Page 210
 May 01/05R
 CES

 

 9 Do the test given in Para. 3.B.
_

 B. Procedure - Fuel Recirculation (Cooling) Pipe Trouble-shooting
 (1) Do a check of and replace, if necessary:

 (a) The CHECK VALVE-FUEL RECIRCULATION, L (122QM) (CHECK VALVE-FUEL RECIRCULATION, R (123QM)) (Ref. AMM TASK 28-16-42-000-001) and (Ref. AMM TASK 28-16-42-400-001).
　
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