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Page Title:
Table 5-1. Troubleshooting Procedures (cont) |
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 TM 55-6605-263-14&P
Table 5-1. Troubleshooting Procedures (cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3.
No 115 Vac 400 Hz Voltage.
Step 1. Check cable and connection to static power inverter.
Replace defective component.
Step 2. Check for +27.5 Vdc input from control panel to static power inverter.
Replace defective component.
4.
No indication of degrees/minutes on Angle Position Indicator display window.
Step 1. Inspect cables and connections from Gyro to Angle Position Indicator and from Gyro to control
panel. Ensure channel 1 or 2 selection switch is depressed.
Replace defective component.
5.
Heading indication continuously changing.
Step 1. Check cables and connections from the control panel, power inverter, Gyro, and Angle Position
Indicator.
Tighten connections.
Step 2. Check drift bias voltage (6.0 volts).
Make proper voltage adjustment. Replace defective component.
6.
Unable to correct Gyro drift rate within tolerance.
Step 1. Check all cable connections.
5-4
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