Lamp In Anti-Collistion Wing Tip Strobe Light Installation; Anti-Collision And Wing Tip Strobe Light Systems Troubleshooting - Piper PA-24 Comanche Service Manual

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PIPER COMANCHE SERVICE MANUAL
9-108. 1nJtaJIarion
Of
Lamp
In Ami<OIlisiaa
WInt
np
S«robe
Lipt.
a.
Route the wires from the new lamp down mro. the bole in the naviptionaJ litht bracket.
b.
Insert the wire tenninals in the plastic plUl supplied with die Dew lamp.
Wire accordinl to the
schematic diqnlm located in the ciecuorUcs section.
e,
Position Strobe lamp on n&viptioa&llipt brKket.
d.
SCCUM
nav;,ationalli,ht uacmbly and braclm with appropriate
ICrC'WI.
c.
Install naviptiona1litht cover and secure with appropriate screws.
f. Insn.n pleqlu window on
win,
tipt and
SCClIre
with appropriate
screws.
9-109. IlcmoV&! Of Lamp In And<ollilion
Lithe.
The lilht
is
located on the upper section of the vertical
fin.
&.
Loosen the screw in the clamp securint the litht
COYer.
b. Remove the Iilht covet.
c. Remove the defective lamp
from
the
socket.
9-110. Troubleshooan, Procedure For And-CoUilion ADd
WiDJ np
Snbe Lipt Systems. The Strobe
light assembly functions as a condensct
discharJc
sysrGn.
A condenser in the
power
supply is charged to
approximately 450 vola D.C.. then discharged
&CrOll
the Xenon fluh
rube at inwrvals approximately 45
flashes per minute, The condenser is panllc1 acroa
the Xenon f1uh
rube
which
is dcsiJned to hold off the
~50
volts D.C. applied until the fluh Nbc is trigtftd by an external pu.1Ie.
This pulse is
pneratcd by a
solid sute timin, c:ircuit in the power Sllpply.
When
croubleshootin, the strObe liJht system, it
mu. first
be dcm'mincd if the trouble is in the flash
Nbc or the power supply. Replacement of the
flash
tube
will confirm it the
Qlbe is
defective. A
normal
operannl power system will emit an audible tone of
1 to
1.' KHC If there is no sound cmincd check the
SYStem according to the foUowin, instructions. When trOUblanooti,. die
S;"1tCm
utilize
the appropriate
schematic in the manual.
a,
Ascertain the input voltaic
at
the power supply is 12 volu.
CAU110N
When disc::onnee:tinJ and conneaina the
PO'""'
supply input connections
do not get the connection revencd. RcYencd polarity of the input
voltage for juSt an inuant will pcrmlnendy damqc the power supply.
The moerscd polarity destroys a
pro~cdve
diode in the po'ftt
supply,
causiftl self-destruction from ovcrbcaan, of the power supply. This
dunqe-is sometimes not immediately appuent. but will cause failure of
the sysccm in time.
b. Check for malfunction in interconnectin. cables.
1. Asccn:ain pins 1 and 3 of interconneC'tifti cable arc not rcvencd.
2.
Using an ohmmeter check continuity between pin 1 and 3 of intcreonncetinB cable. If you
obain
l
reading on the meter the cable is shorted and should be replaced.
ELECTRICAL SYSTEM
ISSUED: 8118n2
3
01