Piper Comanche PA-24 Service Manual page 725

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PIPER COMANCHE SERVICE MANUAL
9-l08. Ia_n,rjon Of lAmp III AIni<OIlioiaa
WinI
np SINbe
up ..
.. Route the wires from the new lamp
down
throllJh the bole in the naviplional light bracket.
b. Insert the wire .erminals in the plutic pi", .. pplied with the Dew lamp. Wire ""corelin,
'0
the
schematic
diacram
located in the electronics section.
c. Position strobe lamp on naviprional liIht bracket.
cI.
Secure navigarional lipt ....... bly and brackft with appropriate
scmn.
e.
Install naviplional liIh' cOYer and .. cure with appropriate
scrnrs.
f. Install plexillas window on
wins
rips and
"""'to
with appropriate screws.
9-109. Removal Of lAmp In AnD<oDllioD
up ..
The lip. ill located on the upper .. ction of the vertical
fin.
.. Loosen the screw in the clamp
"""'rins
the lip. COYer.
b. Remove the lip. coyer.
c. Remove the def. :ive lamp from the socket.
9-110. Troublnhootins Procedure Fot Anti<ollilion ADd W- . ... np SINbe
up.
Systems. The mobe
Iish'
uscmbly functions as a condenser
disclws<
system. A condenser in the power IIIpply ill ch .... d
'0
approximately
~'O
vola D.C. then c!isch ... ed
&eroSI
the Xenon flub tub. a. interYais approxima.ely ~5
fluhes per minute. The condenser is
parallel acrosa the Xenon flash tube whicb ill desisned
'0
bold off the
~so vola D.C appued until the flasb tube
is aigered by an ... ternal pulR. This pulse is ....... ed by •
saud na.e timi .. circuit in the power .. pply.
When troubleshoorinl the mobe liJh. system. it mus<
tint
b. cietennined
if the trouble
is
in the flash
tube or .he power .upply. Replacement of the fluh tube will confirm if the tube ill defective. A normal
openeng power system will emit an audible tone of 1 to 1.5 KHC. If there
is
no sound emitted check the
system accordinl to the foUowin, insmactions. When aoubleshootiftl the system utilize the appropriate
schematic in the manual.
&.
Ascertain
the input voltag.
at
.he power .. pply
is
12 vola.
CAIlT10N
When dixonncc:tint and connectina the power supply input connections
do no. 1ft the connecrion revened. Reversed polarity of .he input
yoltqe for
JUSt
an inan. will permanently damage .be power supply.
The
reversed
polarity deszroys a protective diode in the power supply.
cousi . . . . If-desttuction from overheatins of the powet IIIpply. Thi.
dunage is sometima not immediately a.pparent. bu.t will cause failure of
the
system
in time.
b. Check for malfunction in interconnecting cables.
1. Ascertain pins 1 and 3 of interCOMecti .. cable are no. revenccl.
2. Using an ohmmeter check continuity between pin 1 and 3 of intm:onnecting able. If you
obtain a reading on the meter .he able is shorted and should be replaced.
3 01
ELECTRICAL SYSTEM
ISSUED: '118m