Piper Malibu Meridian PA-46-500TP Airplane Maintenance Manual page 1009

Trouble
Barometric setting does not
change in EADI Display Down
mode when the and/or
buttons are pressed
Selected CRS does not change
when CSR knob rotated
Selected HDG does not change
when HDG knob rotated
Selected CRS does not align
with present heading when
CSR knob pushed
Selected HDG does not align
with present heading when
HDG knob pushed
Failure flags present on display
Power on self test status on
Configuration Data page is
indicated as FAIL
Configuration discrete parity
status on Configuration Data
page is indicated as FAIL
Installation location on
Configuration Data page incorrect
PFD Interface Data Page shows
valid data is not being
received/transmitted
ADAHRS Interface Data pages
show valid data is not being
received
5D5
PIPER AIRCRAFT, INC.
PA-46-500TP, MALIBU MERIDIAN
MAINTENANCE MANUAL
CHART 3 (Sheet 2 of 3)
TROUBLESHOOTING EHSI (i.e. - ND)
Cause
Stuck and/or
Failed ND
Stuck CRS knob
Failed ND
Stuck HDG knob
Failed ND
Stuck CRS knob
Failed ND
Stuck HDG knob
Failed ND
Equipment supplying relevant
data to ND failed
Failed ND
Failed ND
Parity input (Configuration
Discrete 7) not wired correctly
Failed ND
Configuration discretes 0 and 1
not wired correctly
Failed ND
RS422 Receive and/or
Transmit lines are not connected
or wired correctly
Failed ND
Failed PFD
ARINC IN A and B Bus 1 lines
are not connected or are wired
incorrectly
Failed ADAHRS
Failed ND
buttons Check
Replace ND
Check CRS knob
Replace ND
Check HDG knob
Replace ND
Check CRS knob
Replace ND
Check HDG knob
Replace ND
Check status of equipment
supplying data to ND
Check data on relevant
ND test page
Replace ND
Check configuration
discrete setting
Check wiring
Replace ND
Check configuration
discrete setting
Check wiring
Replace ND
Check wiring
Replace ND
Replace PFD
Check wiring
Replace ADAHRS
Replace ND
34-20-00
Remedy
and buttons
PAGE 11
Apr 15/07