Piper Malibu Meridian PA-46-500TP Airplane Maintenance Manual page 1006

Trouble
ADAHRS Interface Data pages
show valid data is not being
received.
ADAHRS select switch has no
effect on the PFD.
Selecting the EADI Display
Down switch to EADI Display
Down does not remove
the PFD display.
PFD screen format not displayed
on the PFD when the EADI
Display Down switch selected
to normal.
34-20-00
PAGE 8
Apr 15/07
PIPER AIRCRAFT, INC.
PA-46-500TP, MALIBU MERIDIAN
MAINTENANCE MANUAL
CHART 2 (Sheet 3 of 3)
TROUBLESHOOTING EADI (i.e. - PFD)
Cause
ARINC IN A and B lines are not
connected or are wired incorrectly.
Failed ADAHRS.
Failed PFD.
ADAHRS select switch not
functional/wired correctly.
Failed PFD.
EADI Display Down switch not
functional/wired correctly.
Failed PFD.
EADI Display Down switch not
functional/wired correctly.
Failed PFD.
Remedy
Check wiring.
Replace ADAHRS.
Replace PFD.
Check ADAHRS select
switch and wiring.
Replace PFD.
Check EADI Display Down
switch and wiring.
Replace PFD.
Check EADI Display Down
switch and wiring.
Replace PFD.
5D2