- connector 4040VC1-A, pins <Z, GG and AA

 - adjacent and related connecting wires.

 (b) Electrical Tests Do a continuity test (Ref. ESPM 20-52-21) and a test for a short circuit (Ref. ESPM 20-52-22) of the wires that follow:
 Left Wing Group A (Ref. AWM 28-42-05)
 - FQIC rack connector 3QT-A, pin 1D to connector 4039VC1-A, pin <Z (dualcomp signal A)

 - FQIC rack connector 3QT-A, pin 3C to connector 4039VC1-A, pin GG (common drive return)

 - FQIC rack connector 3QT-A, pin 1E to connector 4039VC1-A, pin AA (common drive)

 Left Wing Group B (Ref. AWM 28-42-11) and (Ref. AWM 28-42-13)

 - FQIC rack connector 3QT-A, pin 4J to connector 4040VC1-A, pin <Z (dualcomp signal B)

 - FQIC rack connector 3QT-A, pin 7G to connector 4040VC1-A, pin GG (common drive return)

 - FQIC rack connector 3QT-A, pin 5F to connector 4040VC1-A, pin AA (common drive).

 (c) Repair all the unserviceable wiring and connectors (Ref. ESPM 20-00-00).

 (d) Connect the:

 - shorting plugs 4041VC-A and 4043VC to their related receptacles (Ref. AMM TASK 28-42-43-400-008)

 - tank wall connectors 4039VC1-A and 4040VC1-A to their related receptacles.

 (e) Install the initial FQIC 3QT (Ref. AMM TASK 28-42-34-400-001).

 (f) Do the test given in Para. 3.B.

 (5) If the fault continues, drain and open the tank to the air (Ref. AMM TASK 28-10-00-910-001) and (Ref. AMM TASK 28-10-00-910-002).

 (6) Do a check of the HARNESS-LEFT WING TANK A (57QT) (Ref. AWM 28-42-05) and replace, if necessary, (Ref. AMM TASK 28-42-43-000-005) and (Ref. AMM TASK 28-42-43-400-005).

 (7) Do a check of the HARNESS-LEFT WING TANK B (63QT) (Ref. AWM 28-42-11) and replace, if necessary, (Ref. AMM TASK 28-42-43-000-005) and (Ref. AMM TASK 28-42-43-400-005).

 「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, ∞∞28-42-00∞∞∞∞∞∞∞∞∞∞Page C209
 Aug 01/05R CES

 (8) If the harnesses 57QT and 63QT are serviceable, replace the DUALCOMP-RIB 2-3, L WNG TK GROUP B (53QT) (Ref. AMM TASK 28-42-46-000-001) and (Ref. AMM TASK 28-42-46-400-001).
 NOTE : If the left wing tank dualcomp 53QT is replaced, 1000kg
____ (2200lb) of fuel must be put in the left wing tank before you can fully test the dualcomp.
 5. Close-up
________
 A. Close-up and Removal of Equipment
 (1) Do the EIS Stop Procedure (Ref. AMM TASK 31-60-00-860-002).

 (2) If necessary, de-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

 (3) Make sure that the access panel 574BB (674BB) opened during this trouble-shooting procedure is closed.

 (4) Make sure that the work area is clean, clear of tool(s) and other items.

 (5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

 「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, ∞∞28-42-00∞∞∞∞∞∞∞∞∞∞Page C210
 Aug 01/05R
 CES

 TASK 28-42-00-810-830

 Fuel Quantity/Temperature Probe 54QT1(2), Left(Right) Wing Tank
 WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
 WARNING : WHEN YOU DO WORK ON THE FUEL SYSTEM WIRING, YOU MUST USE TEST
_______ EQUIPMENT THAT IS APPROVED (REFER TO INTERNATIONAL OR NATIONAL SPECIFICATIONS FOR INTRINSICALLY SAFE TEST EQUIPMENT, E.G. EN50-020, UL913 OR EQUIVALENT). TEST EQUIPMENT THAT IS NOT APPROVED CAN CAUSE FIRE OR AN EXPLOSION.
 1. Possible Causes
_______________
 - FQIC (3QT)

 - HARNESS-LEFT WING TANK A (57QT)

 - HARNESS-RIGHT WING TANK A (58QT)

 - HARNESS-LEFT WING TANK B (63QT)

 - HARNESS-RIGHT WING TANK B (64QT)

 - PROBE-FQI NO 2 AND TEMP, RIB 1-2 L WNG TK GROUP B (54QT1)

 - PROBE-FQI NO 2 AND TEMP, RIB 1-2 R WNG TK GROUP B (54QT2)

 - aircraft wiring

 - shorting plug 4043VC-A

 - shorting plug 4044VC-A

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
ESPM 20-00-00 ESPM 20-52-21 ESPM 20-52-22 AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
 External Power AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
　
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