Removal Of Inflight Regotnition Lights; Installation Of Inflight Recognition Lights; Checking Interconnecting Cables For Shorts; Checking Tube Socket Assembly For Shorts And Opens - Piper Navajo Chieftain PA-31-350 Service Manual

NAVAJO CHIEFTAIN SERVICE MANUAL
NOTE
A fault of the type described in Step I will not cause permanent
damage to the power supply, but the system will be inoperative if
such a short exists. Avoid any connection between pins 1 and 3 of
interconnecting cable as in Step 2, as this will discharge the con-
denser in the power supply and destroy the trigger circuit.
c.
Check interconnecting cables for shorts.
1.
Disconnect the output cables from the power supply outlets.
2.
The following continuity checks can be made with an ohmmeter.
3.
Check for continuity between the connectors of each interconnecting cable by checking from
pin I to pin 1, pin 2 to pin 2 and pin 3 to pin 3. When making these checks, if no continuity exists the cable is
broken and should be replaced.
4.
Check continuity between pins 1 and 2, 1 and 3 and 2 and 3 of the interconnecting cable. If
continuity exists between any of these connections, the cable is shorted and should be replaced.
d.
Check tube socket assembly for shorts and opens.
1.
Disconnect the tube socket assembly of the strobe light from the interconnecting cable.
2.
The following continuity checks can be made with an ohmmeter.
3.
Check for continuity between pin I of AMP connector to pin 1 of tube socket, pin 2 of AMP
connector to pin 6 and 7 of tube socket and pin 3 of AMP connector to pin 4 of tube socket. When making these
tests, if no continuity exists the tube socket assembly is broken and should be replaced.
4.
Check for continuity between pin 1 of AMP connector to pins 4, 6 and 7 of the tube socket and
pin 2 of AMP connector to pins 1 and 4 of tube socket. If continuity exists the tube socket assembly is shorted
and should be replaced. (Refer to Step b. No. 2 above.)
1 1-98. RECOGNITION LIGHTS. The recognition lights are located in the left and right wing tips. inside a
plexiglas co er.
11-99. REMOVAL OF INFLIGHT RECOGNITION LIGHTS.
a.
Ascertain the circuit breaker for the recognition lights is pulled before attempting to remove the
light.
b.
Remove the screws securing the plexiglas cover to the wing tip.
c.
Remove the two screws securing the light assembly to the bracket.
d.
Pull light assembly partially out of bracket and disconnect electrical connection.
e.
Remove light assembly.
NOTE
Bulb replacement can be accomplished by removing screw on re-
tainer ring and removing retainer and lens.
11-100. INSTALLATION OF INFLIGHT RECOGNITION LIGHTS.
a.
Reconnect the electrical connector to the light assembly.
b.
Secure light assembly with two screws previously removed.
c.
Place plexiglas cover in position on wing tip and secure with appropriate screws.
Revised: 2/8/82
ELECTRICAL SYSTEM
3E5