(9) If the 28VDC is available between pin E and pin D of end connector 5QT-A, replace the PRESELECTOR-FUEL QUANTITY, MULTI TANK (5QT) (Ref. AMM TASK 28-42-21-000-001) and (Ref. AMM TASK 28-42-21-400-001).
(10) If the 28VDC is not available between pin E and pin D of end connector 5QT-A:
(a) Do a check of and replace, if necessary, the RELAY-REFUEL/DEFUEL CTL PNL DOOR POSITION (14QU).
(b) Do a check of the aircraft wiring (28VDC supply) (Ref. ASM 28-42/03) between:
- the end connector 5QT-A, pin E and the RELAY-REFUEL/DEFUEL CTL PNL DOOR POSITION (14QU), terminal B1
- the RELAY-REFUEL/DEFUEL CTL PNL DOOR POSITION (14QU), terminal B2 and the C/B-FUEL/FQI/CHANNEL/1 and 2 (8QT).
(c) Do a check of the aircraft wiring (ground supply) (Ref. ASM 28-42/03) between the end connector 5QT-A, pin D and the ground point.
(d) Repair all the unserviceable wiring and connectors.
(e) Do the tests given in Para. 3.B.
(11) If the fault continues:
(a) Do a check of the aircraft wiring (ARINC 429 BUS electrical wires) (Ref. ASM 28-42/03) between:
- the FQIC (3QT) rack connector AB, pin 12A and the preselector end connector 5QT-A, pin B
- the FQIC (3QT) rack connector AB, pin 13A and the preselector end connector 5QT-A, pin C.
(b) Repair all the unserviceable wiring and connectors.
(c) Do the tests given in Para. 3.B.
「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 B268
201-299, 401-499, Aug 01/05 CES
**ON A/C 301-399,
A. Procedure - The Preselector LEDs Do Not Come On At Preselector Power-up OR The Message PRESELECTOR 5QT Is Shown On The FQIS STATUS Page
(1) Examine the LEDs on the IND-FUEL QTY MULTI TANK (6QT).
(a) If the LEDs on the IND-FUEL QTY MULTI TANK (6QT) are on, go to step (7).
NOTE : This shows the C/B-8QT is closed, the RL-14QU energized
____
and 28VDC available.
(b) If the LEDs on the IND-FUEL QTY MULTI TANK (6QT) are off, go to step (2).
NOTE : This shows the C/B-8QT is open, or a common 28VDC power
____
supply failure.
(2) On the MCDU go to SYSTEM REPORT/TEST - FUEL (Ref. AMM TASK 31-32-00-860-001).
(3) Do the Interrogation of the FQIS Input Parameter Pages (Ref. AMM TASK 28-42-00-740-003).
(4) Go to the Input Parameters Page 3 - FQIS DISCRETE INPUTS.
(5) Examine bit 2D (28VDC FUELLING BUS 2, ON).
(a) If bit 2D shows a 1 (is on), go to step (6).
(b) If bit 2D shows a 0 (is off): 1 Do a check of and close or replace (if necessary) the
_ C/B-FUEL/FQI/CHANNEL/1 and 2 (8QT).
2 Do a check of the aircraft wiring (28VDC FUELLING BUS 2
_ electrical wire) between the C/B-FUEL/FQI/CHANNEL/1 and 2 (8QT) and the FQIC (3QT) rack connector AC, pin 9E (Ref. ASM 28-42/03).
3 Repair all the unserviceable wiring and connectors.
_
4 Do the tests given in Para. 3.B.
_
(6) Examine bit 2L (TX FAULT/PRESELECTOR NOT POWERED).
(a) If bit 2L shows a 0 (is on/no TX fault), replace the PRESELECTOR-FUEL QUANTITY, MULTI TANK (5QT) (Ref. AMM TASK 28-42-21-000-001) and (Ref. AMM TASK 28-42-21-400-001).
「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 : 301-399, ∞∞28-42-00∞∞∞∞∞∞∞∞∞∞Page B269
May 01/05 CES
(b) If bit 2L shows a 1 (is off/TX fault), go to step (7).
(7) Remove the preselector (5QT) (Ref. AMM TASK 28-42-21-000-001).
(8) Use a multimeter to do a test, at the preselector end connector (5QT-A), to make sure that the 28VDC is available between pin E (+ve) and pin D (-ve).
(9) If the 28VDC is available between pin E and pin D of end connector 5QT-A, replace the PRESELECTOR-FUEL QUANTITY, MULTI TANK (5QT) (Ref. AMM TASK 28-42-21-000-001) and (Ref. AMM TASK 28-42-21-400-001).
(10) If the 28VDC is not available between pin E and pin D of end connector 5QT-A:
(a) Do a check of and replace, if necessary, the RELAY-REFUEL/DEFUEL CTL PNL DOOR POSITION (14QU).
(b) Do a check of the aircraft wiring (28VDC supply) (Ref. ASM 28-42/03) between:
- the end connector 5QT-A, pin E and the RELAY-REFUEL/DEFUEL CTL PNL DOOR POSITION (14QU), terminal B1
- the RELAY-REFUEL/DEFUEL CTL PNL DOOR POSITION (14QU), terminal B2 and the C/B-FUEL/FQI/CHANNEL/1 and 2 (8QT). 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3(43)
