- aircraft wiring
- Panel Assy-Refuel (800VU) internal wiring
2. Job Set-up Information
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A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific multimeter
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 28-10-00-910-001 Safety Procedures When You Do Work in a Fuel Tank 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 28-42-44-000-001 Removal of the Center Tank Harness 17QT AMM 28-42-44-400-001 Installation of the Center Tank Harness 17QT AMM 28-46-00-710-001 Test of the Tank High Level Sensing System AMM 28-46-15-000-004 Removal of the Center-Tank Fuel-Level Sensors AMM 28-46-15-400-012 Installation of the Center-Tank Fuel-Level Sensors 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)
AWM 28-46-01
AWM 28-46-02
AWM 28-46-03
「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 ∞∞28-46-00∞∞∞∞∞∞∞∞∞∞Page A272
May 01/05 CES
3. Fault Confirmation
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R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
A. Do the Operational Test of the HI LVL Lights (Ref. AMM TASK 28-46-00-710-001).
NOTE : 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).
With the HIGH LVL TEST switch in the central (released) position
the lamp state, off or on, must agree with the bit indicator 0 or
1 respectively, in the Input Parameters Page 3.
NOTE : OPTIONAL TESTING:
____ 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 enables the tank mounted components and tank wiring to be tested from the tank wall connectors.
**ON A/C 301-399,
A. Do the Operational Test of the HI LVL Lights (Ref. AMM TASK 28-46-00-710-001).
NOTE : 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).
With the HIGH LVL TEST switch in the central (released) position
the lamp state, off or on, must agree with the bit indicator 0 or
1 respectively, in the Input Parameters Page 3.
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 enables a GO/NOGO check to be made of the tank mounted components and wiring from the tank wall connectors.
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Aug 01/05 CES
**ON A/C ALL
4. Fault Isolation
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A. If the CTR HI LVL Indicator light fails to change state, from off to on, or from on to off:
- swap the FLSCU-1 (7QJ) with FLSCU-2 (9QJ), (Ref. AMM TASK 28-46-34-000-001), and (Ref. AMM TASK 28-46-34-400-001).
(1) Do the test given in Para. 3.A.
(2) If the CTR HI LVL Indicator light changes state during the test:
(a) Install the original FLSCU-2 in that position:
(b) Replace the FLSCU-1 (7QJ), (Ref. AMM TASK 28-46-34-000-001), and (Ref. AMM TASK 28-46-34-400-001).
(3) Do the test given in Para. 3.A.
(4) If the fault continues:
(5) Remove Panel Assy-Refuel (800VU) (Ref. AMM TASK 28-25-55-000-001).
(6) Do a check (Ref. AWM 28-46-02) with a multimeter of the SW-TEST/HI/LTS (2QJ) between:
- connector 4023VC, pin <C, and connector 4024VC, pin R, on the Panel
Assy-Refuel (800VU). The multimeter must show: - open circuit for the switch in the central (released) position 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 FUEL 燃油4(108)
