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2.
Electronic Flight Instrument System (EFIS) - Meggitt
A.
Electronic Attitude Director Indicator (EADI) [i.e. - Meggitt MAGIC EFIS Primary Flight Display
(PFD)]
The Primary Flight Display (PFD) is a microprocessor-based color, liquid crystal (LCD) display
system. Information displayed includes Airspeed, Altitude, Attitude, Vertical Speed, Heading and
Instrument Landing System data. The information is conveyed via predefined display formats. In
addition, the PFD includes built-in test, performance and health monitoring functions and display
brightness control. The PFD provides Gillam Code Altitude Output for the transponder (Mode C
altitude).
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.
(1) Troubleshooting
See Chart 2. See also Appendix 1 (grid 5K1).
(2) Basic Functional Test
CAUTION: IF, DURING THE FOLLOWING TEST, ANY COMPONENT DOES NOT
(a) Before applying power, verify proper voltage inputs and ground connections as well as all
system interfaces.
(b) Start the PFD in Test Mode by pressing and holding the Baro Pushbutton while applying
power until the Initialization page is shown. Verify that the Initialization page displays
'MERIDIAN PRIMARY FLIGHT DISPLAY' at the top of the screen and is replaced by the
Configuration Data page after approximately 5 seconds.
(c) 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 improper installation, a
faulty PFD, or both.
(d) Verify that the Configuration Data page displays the correct installation location (primary
or secondary).
(e) Remove power from the PFD to terminate Test Mode. Re-apply power to the PFD and
start the display in Mission Operational Mode.
(f)
Verify that the PFD displays the Initialization page for approximately 5 seconds prior to
displaying the PFD Screen Format. If power has not been applied to the ADAHRS then
the PFD screen format will be replaced by failure indications.
(g) Apply power to the Air Data Attitude Heading Reference System (ADAHRS) (i.e. - AHRS)
providing serial data to the PFD.
(h) Verify that the PFD Screen Format is displayed (if the ADAHRS is performing initialization
then the ADAHRS Initialization screen will replace the attitude sphere). If any of the failure
indications are displayed refer to Chart 2.
(i)
Verify that the ADAHRS has completed initialization by observing that the attitude sphere
replaces the ADAHRS Initialization screen. If the ADAHRS has not completed initialization
within 180 seconds after application of power to the ADAHRS refer to Chart 2.
5C21
PIPER AIRCRAFT, INC.
PA-46-500TP, MALIBU MERIDIAN
MAINTENANCE MANUAL
PRODUCE THE EXPECTED RESULTS, THAT COMPONENT MUST NOT BE
USED IN FLIGHT UNTIL THE PROBLEM IS CORRECTED.
34-20-00
Apr 15/07
PAGE 3
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Table of Contents
Troubleshooting
