- if only FQIS probe messages are shown, Trouble-shoot the identified LRUs (Ref. TSM 28-CFDS PB 101) for the related Task number(s)
- if no FQIS messages are shown, but the FQIs are seen to fluctuate (vary/change over a period of time), do the TSM procedures, FQIS and ECAM FQIs Fluctuate When ADIRS is set to off (Ref. TASK 28-42-00-810-874), and Attitude Data From the ADIRUs is Possibly Incorrect (Ref. TASK 28-42-00-810-848).
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**ON A/C 301-399,
R B. Test
(1) To keep the number of computer removals and replacements to a minimum do the Power On BITE test of the FQI system as follows:
(a) If the FQIS is not energized:
1 Close the C/Bs 1QT and 2QT.
_ 2 Energize the Aircraft Electrical Circuits from the External
_ Power (Ref. AMM TASK 24-41-00-861-002).
(b) If the FQIS is energized, reset the FQIC as follows: 1 Open the C/Bs 1QT and 2QT.
_
2 Wait 10 seconds.
_
3 Close the C/Bs 1QT and 2QT.
_ NOTE : For the FQIC to do a (new) power up BITE test, a power
____ supply interrupt (interval) of more than 10 seconds is necessary. This gives the current status of the FQIS/FLSS components.
(2) Do the EIS Start Procedure (ECAM only) (Ref. AMM TASK 31-60-00-860-001).
(3) Make sure that the ADIRS is set to OFF. If necessary, do the ADIRS stop procedure (Ref. AMM TASK 34-10-00-860-005).
NOTE : This step is important if this procedure is being used to
____ trouble shoot a FQI display (ECAM and FQIS) fluctuations problem. It will disconnect the external acceleration inputs that are used to give pitch and roll.
(4) On the ECAM control panel, push (in) the FUEL P/BSW.
(5) Make sure that the FUEL page shows on the ECAM lower display unit.
(6) Wait 60 seconds.
(7) Continue as follows: NOTE : The FUEL page FQIs will show XXs in amber color for 35 seconds
____ during the FQIC power up BITE test and the intercell transfer valves can be seen to move.
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(a) Do the procedure to get access to the SYSTEM REPORT/TEST menu page (Ref. AMM TASK 31-32-00-860-001).
(b) When the SYSTEM REPORT/TEST menu page comes into view, push the line key adjacent to FUEL.
(c) When the FUEL menu page comes into view, push the line key adjacent to FQIS STATUS.
(8) Examine the FQIS STATUS page and then monitor the FQIs on the ECAM FUEL page and the FQIS indicators:
NOTE : In normal operation the FQI indicators (FQIS and ECAM, FOB and
____ each tank) can increase or decrease by 10 kg/20 lb (which is one unit of the display resolution). If a tank value increases or decreases by 10 kg/20 lb, the total (FOB) will increase or decrease by the same amount.
- if the FQIC 3QT message is shown, or the FQIC 3QT message and other FQIS probe messages are shown, go to Para. 4.A.
- if only FQIS probe messages are shown, Trouble-shoot the identified LRU(s) (Ref. TSM 28-CFDS PB 101) for the related Task number(s)
- if no FQIS messages are shown, but the FQIs are seen to fluctuate (vary/change over a period of time), do the TSM procedures, FQIS and ECAM FQIs Fluctuate When ADIRS is set to off (Ref. TASK 28-42-00-810-874), and Attitude Data From the ADIRUs is Possibly Incorrect (Ref. TASK 28-42-00-810-848).
**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) Push the line key to the right of the FQIC 3QT message to get the troubleshooting data (Ref. TSM PB 301).
(a) Print out a copy of the FQIC 3QT trouble shooting data and mark as original FQIC. Keep for future reference (possible use). 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2(109)
