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 TM 55-1905-220-14-3
Table 3-88. Rudder Angle Indicator and Repeatback Transmitter Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
Inoperative. No incoming power.
Step 1.
Switch on Intercommunication Panel 2L-107.
Place switch in ON position.
Step 2.
Check for defective fuse.
Replace 3 amp fuse. Refer to paragraph 3-211.
Step 3.
Check for loose wiring connections.
Tighten.
2. Indicator dimmer lights inoperative.
Step 1.
Check for defective lamp(s).
Replace. Refer to paragraph 3-211.
Step 2.
Check for defective dimmer control.
Replace. Refer to paragraph 3-211.
3.
Angle shown on indicator and actual rudder angle differ.
Step 1.
Check for binding transmitter arm.
Lubricate.
Step 2.
Check for defective arm, spring pin or tie rod.
Replace. Refer to paragraph 3-211.
Step 3.
Check wiring and connections.
Replace worn or broken wires, or terminal strip.
Refer to paragraph 3-211.
Step 4.
Check for loose servo motor.
Tighten. Refer to paragraph 3-211.
Step 5.
Check that problem is still not solved.
Refer to Direct Support Maintenance.
3-238
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