- FQIC rack connector 3QT-A, pins 5C, 7C, 10C and 13E

 - receptacle 210VC and connector 210VC-A

 - receptacle 1970VC and connector 1970VC-A

 - terminal block 7522VT and all of its connections

 - receptacle 7570VC and connector 7570VC-A

 - pressure seal feedthrough 7510VP

 - receptacle 7512VC-A, pins U, E, V, D and C

 - 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 (Ref. AWM 28-42-16):

 - FQIC rack connector 3QT-A, pin 5C to connector 7512VC-A, pin U (probe 5 signal)

 - FQIC rack connector 3QT-A, pin 7C to connector 7512VC-A, pin E (CIC signal)

 - FQIC rack connector 3QT-A, pin 10C to connector 7512VC-A, pin V and D (common drive return)

 - FQIC rack connector 3QT-A, pin 13E to connector 7512VC-A, pin C (common drive).

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

 (d) Connect:

 - the connector 7512VC-A to the fused adaptor

 - the fused adaptor to the tank wall receptacle 7512VC.

 「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, ∞∞28-42-00∞∞∞∞∞∞∞∞∞∞Page B263
 201-299, 401-499, Aug 01/05 CES

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

 (f) Do the test given in Para. 3.B.

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

 (12) Do a check of the HARNESS-CHAN B, CTR TK (18QT) (Ref. AWM 28-42-16) and replace, if necessary, (Ref. AMM TASK 28-42-44-000-002) and (Ref. AMM TASK 28-42-44-400-002).

 (13) If the harness 18QT is serviceable, replace the PROBE-FUEL QTY, NO 5 AND CIC, CTR TK GROUP B (39QT) (Ref. AMM TASK 28-42-15-000-002) and (Ref. AMM TASK 28-42-15-400-002).

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 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 applicable, close the MLG doors (Ref. AMM TASK 32-12-00-410-001).

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

 (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.

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞28-42-00∞∞∞∞∞∞∞∞∞∞Page B264
 201-299, 401-499, Aug 01/05 CES

 **ON A/C ALL
 TASK 28-42-00-810-823
 Fuel Quantity - Preselector 5QT
 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
_______________
 - PRESELECTOR-FUEL QUANTITY, MULTI TANK (5QT)

 - RELAY-REFUEL/DEFUEL CTL PNL DOOR POSITION (14QU)

 - CTL PNL-REFUEL/DEFUEL (800VU)

 - SW-TEST/LTS/HIGH (2QJ)

 - FQIC (3QT)

 - C/B-FUEL/FQI/CHANNEL/1 and 2 (8QT)

 - aircraft wiring

 - diode between pins 4 and 3 (part of diode module 4001VD)

 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
 -------------------------------------------------------------------------------
No specific multimeter
 B. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 28-25-55-000-001 Removal of the Refuel Panel 800VU
 AMM 28-25-55-400-001 Installation of the Refuel Panel 800VU
 AMM 28-42-00-710-001 Operational Test of the Fuel Quantity

 Indicating-System AMM 28-42-00-740-001 Status Report (BITE) AMM 28-42-00-740-003 Interrogation of the FQIS Input Parameters Pages AMM 28-42-21-000-001 Removal of the Fuel Quantity Preselector 5QT AMM 28-42-21-400-001 Installation of the Fuel Quantity Preselector 5QT AMM 28-42-34-000-001 Removal of the Fuel Quantity-Indicating Computer
　
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