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

Page: 418 / 1956

PAGE 2
Feb 28/07
2H20
24-30-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
Trouble Cause Remedy
Zero output indicated on Open field circuit. With the battery switch
ammeter regardless of rpm turned on, check for battery
(refer to alternator system voltage from the airplane’s
test procedure). main bus through the entire
field circuit to the alternator
field terminal. Measure the
voltage from the ground (-)
to the following points (+) in
sequence: bus bar, field
circuit breaker (5A), field
terminals of master switch
voltage regulator and
alternator field terminal.
Interruption of voltage
through any of these points
isolates the faulty
component or wire which
must be replaced. (See
wiring schematic,
Chapter 91.)
Open output circuit. With the battery switch
turned on, check for battery
voltage from the airplane’s
main bus through the entire
output circuit to the
alternator battery post.
Measure voltage from
ground (-) to the following
points (+) in sequence: bus
bar, output current limiter,
ammeter, and alternator
battery post. Interruption of
voltage through any of
these points isolates the
faulty component or wire
which must be replaced.
(See wiring schematic,
Chapter 91.)
CHART 1 (Sheet 1 of 5)
TROUBLESHOOTING (ELECTRICAL SYSTEM)