TM 11-6660-200-14
OPERATOR TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Dial lamps do not light.
Step 1.
Check that power cable is properly connected to power source.
Reconnect power cable.
Step 2.
Check for defective indicator fuse.
Replace fuse (para 3-4).
Step 3.
Check for defective dial lamps.
Replace dial lamps (para 3-5).
Step 4.
Turn light switch and observe operation for binding or extreme looseness.
Refer to higher category of maintenance.
2. Wind speed indicator pointer does not move from zero when impeller is turning.
Check for improper connection of interconnection cable.
Refer to higher category of maintenance.
3. Wind speed indicator pointer shows erratic reading.
Step 1.
Check for improper connection of interconnection cable.
Refer to higher category of maintenance.
Step 2.
Check for broken or binding transmitter impeller.
Refer to higher category of maintenance.
3-2
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