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REFERENCE DESIGNATION
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AMM 28-46-34-000-001 Removal of the Fuel-Level Sensing Control-Unit (FLSCU) (7QJ,9QJ) AMM 28-46-34-400-001 Installation of the Fuel-Level Sensing Control-Unit
(FLSCU) (7QJ,9QJ)
ASM 28-46/01
AWM 28-46-01
AWM 28-46-02
3. Fault Confirmation
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A. Table of the circuit breakers referred to in this procedure:
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PANEL DESIGNATION IDENT. LOCATION
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121VU FUEL/HI/LVL/SPLY 1QJ L25
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
B. Test
(1) Do the BITE test of the FLSS (Ref. AMM TASK 28-46-00-740-001).
(2) Examine the FLSS STATUS page on the MCDU.
(3) If the page shows messages for one or more of the other sensors and/or the FLSCU-1(2), do (Ref. TASK 28-46-00-810-818).
(4) If the message 284615 L(R) HI LEVEL SENSOR 17QJ1(2):
- is shown, do Para. 4.A.
- is not shown, no work steps are necessary.
NOTE : You can get more data from the:
____
- Aircraft Maintenance Manual (AMM) Chap. 28-46-00, the Fuel Level Sensing System, Description and Operation (D and O)
- Trouble Shooting Manual (TSM) - Task Supporting Data (Ref.
P. Block 301)
- Aircraft Schematic Manual (ASM) (Ref. ASM 28-46/01). You can get more Trouble-shooting data from the CFDS(FUEL):
- Input Parameters Page 3 (Ref. P. Block 301), used with the Fuel Level Sensors Operating (Changeover) Values (Ref. P. Block 301)
- FLSCU Trouble-shooting Data (Ref. P. Block 301).
NOTE : OPTIONAL TESTING:
____
「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 ∞∞28-46-00∞∞∞∞∞∞∞∞∞∞Page 218
Aug 01/05 CES
Where a PSD A320-2 Fuel Level Sensing Test Set is available measurements can be taken before a decision is made to go into or close up a fuel tank. The Test Set lets the tank mounted components and tank wiring be tested from the tank wall connectors.
**ON A/C 301-399,
R B. Test
R (1) Do the BITE test of the FLSS (Ref. AMM TASK 28-46-00-740-001).
R (2) Examine the FLSS STATUS page on the MCDU.
R (3) If the page shows messages for one or more of the other sensors and/or the FLSCU-1(2), do (Ref. TASK 28-46-00-810-818).
R R R R R (4) If the message 284615 L(R) HI LEVEL SENSOR 17QJ1(2): - is shown, do Para. 4.A. - is not shown, no work steps are necessary.
NOTE : You can get more data from the:____ - Aircraft Maintenance Manual (AMM) Chap. 28-46-00, the Fuel Level Sensing System, Description and Operation (D and O) - Trouble Shooting Manual (TSM) - Task Supporting Data (Ref. P. Block 301) - Aircraft Schematic Manual (ASM) (Ref. ASM 28-46/01). You can get more Trouble-shooting data from the CFDS(FUEL): - Input Parameters Page 3 (Ref. P. Block 301), used with the Fuel Level Sensors Operating (Changeover) Values (Ref. P. Block 301) - Trouble-shooting Data (Ref. P. Block 301).
NOTE : OPTIONAL TESTING:____ Where a PSDA321-1 Test Set is available, a check can be made before a decision is made to go into or close up a fuel tank. The Test Set lets a GO/NOGO check be made of the tank mounted components and wiring from the tank wall connectors.
「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 ∞∞28-46-00∞∞∞∞∞∞∞∞∞∞Page 219
May 01/05 CES
**ON A/C ALL
4. Fault Isolation
_______________ R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
A. Procedure
(1) Do the steps applicable to the test equipment available.
(2) Test Equipment. 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.
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