Cessna T188C - Page 342

MODEL 188 & T188 SERIES SERVICE MANUAL
16-54. TROUBLE SHOOTING (Cont.)
TROUBLE PROBABLE CAUSE REMEDY
BOTH ANTI-COLLISION Open circuit breaker. Cont. 2. Disconnect red wire be-
STROBE LIGHTS
WILL
tween aircraft power supply
NOT LIGHT.
(battery/external
power) and
strobe
power
supplies,
one
at a time. If circuit breaker
opens on one strobe power
supply, replace strobe power
supply.
If circuit
breaker
opens on both strobe power
supplies
proceed
to step
3.
If circuit
breaker
does
not
open proceed to step 4.
3. Check aircraft wiring.
Repair or replace as neces-
sary.
4. Inspect strobe power sup-
ply
ground
wire for
contact
with wing structure.
CAUTION
Extreme care should be taken when exchanging flash tube. The tube
is fragile and can easily be cracked in a place where it will not be
obvious visually.
Make sure the tube
is seated properly
on the base
of the nav light assembly and is centered in the dome.
NOTE
When checking defective power supply and flash tube, units from
opposite wing may be used. Be sure power leads are protected
properly when unit is removed to prevent short circuit.
ONE ANTI-COLLISION
Defective Strobe Power
Supply, 1. Connect voltmeter
to red lead
STROBE LIGHT WILL or flash tube. between aircraft power supply
NOT LIGHT.
(battery/external
power)
and
strobe
power
supply,
connecting
negative lead to wing structure.
Check
for
12/24
volts. If
OK
proceed to step 2. If not, check
aircraft
power supply
(battery/
external power).
2. Replace flash tube with known
good flash tube. If system still
does
not work,
replace
strobe
power supply.
16-38