DOC AIRBUS | TSM A320FSTANDARD PRACTICES - ENGINE - GENERAL - TASK SUPPORTING DATA
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
1. TROUBLE SHOOTING Data of the FADEC
A. Display of the CFDS FADEC Messages
(1) On the center pedestal, on the MCDU, get the MCDU MENU page.
(2) On the MCDU MENU page, push the line key adjacent to the SYSTEM REPORT/TEST indication.
(3) On the MCDU, push NEXT PAGE key.
(4) On the SYSTEM REPORT/TEST page, push the line key adjacent to the ENG indication.
(5) On the SYSTEM REPORT/TEST page, push the line key adjacent to the FADEC 1A, 1B, 2A or 2B indication.
(6) Push the line key adjacent to the TROUBLE SHOOTING indication.
(7) Read the trouble shooting message related to the CFDS message.
Display of the Trouble Shooting Message(1) Push the line key adjacent to the SYSTEM REPORT/TEST of the FADEC 1A, 2A, 1B or 2B.
(2) Read the Trouble Shooting message.
2. General data to do a check of the powerplant resistance
A. The recommended way to check a resistance of the component is to measure the resistance of both channel A and B components, and to compare the two values. Resistance between channels A and B should be within 15 per cent.
B. To accurately measure the resistance of a thermocouple, the average of two reading has to be calculated. The ohmmeter leads should be reversed after the first measurement in order to obtain the proper average.
C. When you try to measure with accuracy a low resistance component, you must not forget to substract the resistance of the ohmmeter test leads.