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TM-1-1500-204-23-4 General Aircraft Maintenance (Electrical and Instrument Maintenance Procedures) Volume 4 Manual | Next
CHAPTER 4 INSTRUMENT SHOP |
TM 1-1500-204-23-4
Table 3-3. Typical Ignition System Troubleshooting Chart
Condition
Isolation procedure
Corrective action
1.
Igniter fails to operate
a. Determine that starter
If starter switch contacts
when starter switch is
switch contacts are not cor-
are corroded or burned,
depressed.
roded or burned.
replace switch.
b. Determine that key lock
If key lock ignition switch
ignition switch is functional.
is not functioning proper-
ly, replace switch.
c. Determine that fuel switch is
If fuel switch is not
functional.
functioning properly,
replace switch.
d. Ensure igniter is functioning
Replace igniter as re-
properly.
quired.
Table 3-4. Typical Lighting System Troubleshooting Chart
Condition
Isolation procedure
Corrective action
1.
Switch fails to operate
a. Determine that lighting
If lighting switch/rheostat
lights.
switch/rheostat is function-
is functioning properly,
ing properly.
replace light.
2.
One light dim or out
a. Check that light is properly
If lighting is not properly
intermittently.
grounded.
grounded, remove light
and clean ground.
b. Check for corrosion in light
Clean light socket
socket.
terminals or replace light
if required.
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