(7) If the ground seen in step (4):
 (a) Is still shown (with the FLSCU removed):

 (b) Is not 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).
 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.

 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
 「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 : 001-049, 051-099, 101-149, 151-199, ∞∞28-16-00∞∞∞∞∞∞∞∞∞∞Page 207
 201-299, 401-499, Aug 01/05 CES

 - 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).

 9 Do the test given in Para. 3.B.
_

 B. Procedure - Fuel Recirculation (Cooling) Pipe Trouble-shooting
 (1) Do the Operational Test of the Fuel Recirculation Check Valve 122QM (123QM) (Ref. AMM TASK 28-16-00-710-002).

 (2) If necessary, replace 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).

 (3) If necessary, replace the VALVE-PRESSURE HOLDING, L WING TANK (124QM) (VALVE-PRESSURE HOLDING, R WING TANK (125QM)) (Ref. AMM TASK 28-16-41-000-001) and (Ref. AMM TASK 28-16-41-400-001).

 (4) Do the test given in Para. 3.B.

 (5) If the fault continues, do a check of the fuel recirculation (cooling) pipe for damage or blockage and replace, if necessary, (Ref. AMM TASK 28-00-00-000-001) and (Ref. AMM TASK 28-00-00-400-001).

 (6) Do the test given in Para. 3.B.
 **ON A/C 301-399,

 A. Procedure
 (1) If the failure is related to IDG-1, remove the Engine Interface Unit (EIU) 1KS1 (Ref. AMM TASK 73-25-34-000-040).

 (2) If the failure is related to IDG-2, remove the EIU 1KS2 (Ref. AMM TASK 73-25-34-000-040).

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : ALL ∞∞28-16-00∞∞∞∞∞∞∞∞∞∞Page 208
 May 01/05 CES

 (3) Use a multimeter, to do a test (Ref. ASM 28-16/01) to see if there is a ground at the EIU rack connector 1KS1(2)-AA, pin 2A.
 NOTE : This step checks the input to the EIU, of the fuel logic for
　
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