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 TM 55-1905-220-14-3
Table 3-89. Heading Selector Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
Dimmer lights inoperative.
Step 1.
Check for defective lamps.
Replace. Refer to paragraph 3-215.
Step 2.
Check for defective variable resistor, switch or transformer.
Refer to Direct Support Maintenance.
2.
Selector inoperative or erratic.
Step 1.
Check for worn, or broken wires.
Replace or repair. Refer to Direct Support Maintenance.
Step 2.
Check for defective auto pilot.
Refer to Direct Support Maintenance.
Step 3.
Inspect steering control panel.
Refer to table 3-90.
3-239
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