Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 956 / 1956

PAGE 10
Feb 28/07
5D14
34-20-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
(2) Electronic Horizontal Situation Indicator (EHSI) [i.e. - Meggitt MAGIC EFIS Navigation Display (ND)]
The Navigation Display (ND) is, like the Meggitt Pr imar y Flight Display (PFD), a
microprocessor-based color, liquid crystal (LCD) display system. Information displayed
includes Navigation Data, Airspeed, Altitude, Attitude, Vertical Speed, Heading and Instrument
Landing System data. The information is displayed via a series of predefined display formats
(HSI, ARC, MAP). In addition, the ND includes built-in test, performance and health monitoring
functions and display brightness control.
WARNING: FAILURE TO CONSULT APPLICABLE VENDOR PUBLICATION(S), WHEN
SERVICING OR INSPECTING VENDOR EQUIPMENT INSTALLED IN PIPER
AIRCRAFT, MAY RENDER THE AIRCRAFT UNAIRWORTHY. (SEE
INTRODUCTION - SUPPLEMENTARY PUBLICATIONS.)
Descriptions of the operator controls and basic operating modes and screens are in the
appropriate Pilot’s Operating Handbook Supplement.
(a) Troubleshooting
See Chart 6. See also Appendix 1 (grid 5K19).
(b) Basic Functional Test
The following test procedure should be performed with the aircraft in a suitable position to
receive valid VOR/ILS/GPS/DME signals. If this is not possible, then use the appropriate
test sets to simulate the signals as required.
CAUTION: IF, DURING THE FOLLOWING TEST, ANY COMPONENT DOES NOT
PRODUCE THE EXPECTED RESULTS, THAT COMPONENT MUST NOT
BE USED IN FLIGHT UNTIL THE PROBLEM IS CORRECTED.
1 Before applying power, verify proper voltage inputs and ground connections as well
as all system interfaces.
2 Start the ND in Test Mode by pressing and holding the MNU Pushbutton while
applying power until the Initialization page is shown. Verify that the Initialization page
displays 'MERIDIAN NAVIGATION DISPLAY' at the top of the screen and is replaced
by the Configuration Data page after approximately five (5) seconds.
3 Verify that the Configuration Data page Configuration Discrete Parity Status and
Power On Self Test results both show results of Pass. If the result is FAIL, further
diagnostic effort is required to determine if the failed indication is the result of a fault
in the wiring, a faulty ND, or both.
Trouble Cause Remedy
Selecting the EADI Display EADI Display Down switch not Check EADI Display Down
Down switch to EADI Display functional/wired correctly. switch and wiring.
Down does not remove
the PFD display.
Failed PFD. Replace PFD.
PFD screen format not displayed EADI Display Down switch not Check EADI Display Down
on the PFD when the EADI functional/wired correctly. switch and wiring.
Display Down switch selected
to normal.
Failed PFD. Replace PFD.
CHART 5 (Sheet 3 of 3)
TROUBLESHOOTING EADI (i.e. - PFD)